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author | Stanley Sufficool <ssufficool@php.net> | 2014-10-20 21:33:32 -0700 |
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committer | Stanley Sufficool <ssufficool@php.net> | 2014-10-20 21:33:32 -0700 |
commit | 8defcb855ab01d9c8ab4759cb793d80149b55a8c (patch) | |
tree | ed51eb30a2cbc92b102557498fb3e4113da1bb07 /Zend/zend_compile.c | |
parent | 9c7dbb0487f5991fde03873ea8f5e66d6688415f (diff) | |
parent | baddb1c73a170ef1d2c31bd54cddbc6e1ab596b9 (diff) | |
download | php-git-8defcb855ab01d9c8ab4759cb793d80149b55a8c.tar.gz |
Merge branch 'master' of https://git.php.net/push/php-src
* 'master' of https://git.php.net/push/php-src: (6215 commits)
Extra comma
Moved proxy object support in ASSIGN_ADD (and family) from VM to slow paths of corresponding operators
Simplification
zend_get_property_info_quick() cleanup and optimization
initialize lineno before calling compile file file in phar
Use ADDREF instead of DUP, it must be enough.
Removed old irrelevant comment
fixed compilation error
Fix bug #68262: Broken reference across cloned objects
export functions needed for phpdbg
Fixed compilation
Optimized property access handlers. Removed EG(std_property_info).
Fixed bug #68199 (PDO::pgsqlGetNotify doesn't support NOTIFY payloads)
Don't make difference between undefined and unaccessible properies when call __get() and family
Don't make useless CSE
array_pop/array_shift optimization
check for zlib headers as well as lib for mysqlnd
a realpath cache key can be int or float, catching this
News entry for new curl constants
News entry for new curl constants
...
Diffstat (limited to 'Zend/zend_compile.c')
-rw-r--r-- | Zend/zend_compile.c | 10023 |
1 files changed, 4588 insertions, 5435 deletions
diff --git a/Zend/zend_compile.c b/Zend/zend_compile.c index 3bdacc750d..5d3ee24c84 100644 --- a/Zend/zend_compile.c +++ b/Zend/zend_compile.c @@ -2,7 +2,7 @@ +----------------------------------------------------------------------+ | Zend Engine | +----------------------------------------------------------------------+ - | Copyright (c) 1998-2013 Zend Technologies Ltd. (http://www.zend.com) | + | Copyright (c) 1998-2014 Zend Technologies Ltd. (http://www.zend.com) | +----------------------------------------------------------------------+ | This source file is subject to version 2.00 of the Zend license, | | that is bundled with this package in the file LICENSE, and is | @@ -14,6 +14,7 @@ +----------------------------------------------------------------------+ | Authors: Andi Gutmans <andi@zend.com> | | Zeev Suraski <zeev@zend.com> | + | Nikita Popov <nikic@php.net> | +----------------------------------------------------------------------+ */ @@ -26,12 +27,13 @@ #include "zend_llist.h" #include "zend_API.h" #include "zend_exceptions.h" -#include "tsrm_virtual_cwd.h" +#include "zend_virtual_cwd.h" #include "zend_multibyte.h" #include "zend_language_scanner.h" +#include "zend_inheritance.h" #define CONSTANT_EX(op_array, op) \ - (op_array)->literals[op].constant + (op_array)->literals[op] #define CONSTANT(op) \ CONSTANT_EX(CG(active_op_array), op) @@ -51,48 +53,21 @@ (target)->u.constant = CONSTANT(src.constant); \ } else { \ (target)->u.op = src; \ - (target)->EA = 0; \ } \ } while (0) -#define COPY_NODE(target, src) do { \ - target ## _type = src ## _type; \ - target = src; \ - } while (0) - -#define CALCULATE_LITERAL_HASH(num) do { \ - zval *c = &CONSTANT(num); \ - Z_HASH_P(c) = str_hash(Z_STRVAL_P(c), Z_STRLEN_P(c)); \ - } while (0) - -#define GET_CACHE_SLOT(literal) do { \ - CG(active_op_array)->literals[literal].cache_slot = CG(active_op_array)->last_cache_slot++; \ - if ((CG(active_op_array)->fn_flags & ZEND_ACC_INTERACTIVE) && CG(active_op_array)->run_time_cache) { \ - CG(active_op_array)->run_time_cache = erealloc(CG(active_op_array)->run_time_cache, CG(active_op_array)->last_cache_slot * sizeof(void*)); \ - CG(active_op_array)->run_time_cache[CG(active_op_array)->last_cache_slot - 1] = NULL; \ - } \ - } while (0) +static inline void zend_alloc_cache_slot(uint32_t literal TSRMLS_DC) { + zend_op_array *op_array = CG(active_op_array); + Z_CACHE_SLOT(op_array->literals[literal]) = op_array->last_cache_slot++; +} #define POLYMORPHIC_CACHE_SLOT_SIZE 2 -#define GET_POLYMORPHIC_CACHE_SLOT(literal) do { \ - CG(active_op_array)->literals[literal].cache_slot = CG(active_op_array)->last_cache_slot; \ - CG(active_op_array)->last_cache_slot += POLYMORPHIC_CACHE_SLOT_SIZE; \ - if ((CG(active_op_array)->fn_flags & ZEND_ACC_INTERACTIVE) && CG(active_op_array)->run_time_cache) { \ - CG(active_op_array)->run_time_cache = erealloc(CG(active_op_array)->run_time_cache, CG(active_op_array)->last_cache_slot * sizeof(void*)); \ - CG(active_op_array)->run_time_cache[CG(active_op_array)->last_cache_slot - 1] = NULL; \ - CG(active_op_array)->run_time_cache[CG(active_op_array)->last_cache_slot - 2] = NULL; \ - } \ - } while (0) - -#define FREE_POLYMORPHIC_CACHE_SLOT(literal) do { \ - if (CG(active_op_array)->literals[literal].cache_slot != -1 && \ - CG(active_op_array)->literals[literal].cache_slot == \ - CG(active_op_array)->last_cache_slot - POLYMORPHIC_CACHE_SLOT_SIZE) { \ - CG(active_op_array)->literals[literal].cache_slot = -1; \ - CG(active_op_array)->last_cache_slot -= POLYMORPHIC_CACHE_SLOT_SIZE; \ - } \ - } while (0) +static inline void zend_alloc_polymorphic_cache_slot(uint32_t literal TSRMLS_DC) { + zend_op_array *op_array = CG(active_op_array); + Z_CACHE_SLOT(op_array->literals[literal]) = op_array->last_cache_slot; + op_array->last_cache_slot += POLYMORPHIC_CACHE_SLOT_SIZE; +} ZEND_API zend_op_array *(*zend_compile_file)(zend_file_handle *file_handle, int type TSRMLS_DC); ZEND_API zend_op_array *(*zend_compile_string)(zval *source_string, char *filename TSRMLS_DC); @@ -102,78 +77,87 @@ ZEND_API zend_compiler_globals compiler_globals; ZEND_API zend_executor_globals executor_globals; #endif -static void zend_duplicate_property_info(zend_property_info *property_info) /* {{{ */ +static void zend_destroy_property_info(zval *zv) /* {{{ */ { - property_info->name = str_estrndup(property_info->name, property_info->name_length); + zend_property_info *property_info = Z_PTR_P(zv); + + zend_string_release(property_info->name); if (property_info->doc_comment) { - property_info->doc_comment = estrndup(property_info->doc_comment, property_info->doc_comment_len); + zend_string_release(property_info->doc_comment); } } /* }}} */ -static void zend_duplicate_property_info_internal(zend_property_info *property_info) /* {{{ */ +static void zend_destroy_property_info_internal(zval *zv) /* {{{ */ { - property_info->name = str_strndup(property_info->name, property_info->name_length); -} -/* }}} */ + zend_property_info *property_info = Z_PTR_P(zv); -static void zend_destroy_property_info(zend_property_info *property_info) /* {{{ */ -{ - str_efree(property_info->name); - if (property_info->doc_comment) { - efree((char*)property_info->doc_comment); - } + zend_string_release(property_info->name); + free(property_info); } /* }}} */ -static void zend_destroy_property_info_internal(zend_property_info *property_info) /* {{{ */ -{ - str_free((char*)property_info->name); +static zend_string *zend_new_interned_string_safe(zend_string *str TSRMLS_DC) /* {{{ */ { + zend_string *interned_str; + + zend_string_addref(str); + interned_str = zend_new_interned_string(str TSRMLS_CC); + if (str != interned_str) { + return interned_str; + } else { + zend_string_release(str); + return str; + } } /* }}} */ -static void build_runtime_defined_function_key(zval *result, const char *name, int name_length TSRMLS_DC) /* {{{ */ +static zend_string *zend_build_runtime_definition_key(zend_string *name, unsigned char *lex_pos TSRMLS_DC) /* {{{ */ { + zend_string *result; char char_pos_buf[32]; - uint char_pos_len; - const char *filename; + size_t filename_len, char_pos_len = zend_sprintf(char_pos_buf, "%p", lex_pos); - char_pos_len = zend_sprintf(char_pos_buf, "%p", LANG_SCNG(yy_text)); + const char *filename; if (CG(active_op_array)->filename) { - filename = CG(active_op_array)->filename; + filename = CG(active_op_array)->filename->val; + filename_len = CG(active_op_array)->filename->len; } else { filename = "-"; + filename_len = sizeof("-") - 1; } - /* NULL, name length, filename length, last accepting char position length */ - Z_STRLEN_P(result) = 1+name_length+strlen(filename)+char_pos_len; + result = zend_string_alloc(1 + name->len + filename_len + char_pos_len, 0); + sprintf(result->val, "%c%s%s%s", '\0', name->val, filename, char_pos_buf); + return zend_new_interned_string(result TSRMLS_CC); +} +/* }}} */ - /* must be binary safe */ - Z_STRVAL_P(result) = (char *) safe_emalloc(Z_STRLEN_P(result), 1, 1); - Z_STRVAL_P(result)[0] = '\0'; - sprintf(Z_STRVAL_P(result)+1, "%s%s%s", name, filename, char_pos_buf); +static zend_bool zend_get_unqualified_name(const zend_string *name, const char **result, size_t *result_len) /* {{{ */ +{ + const char *ns_separator = zend_memrchr(name->val, '\\', name->len); + if (ns_separator != NULL) { + *result = ns_separator + 1; + *result_len = name->val + name->len - *result; + return 1; + } - result->type = IS_STRING; - Z_SET_REFCOUNT_P(result, 1); + return 0; } /* }}} */ static void init_compiler_declarables(TSRMLS_D) /* {{{ */ { - Z_TYPE(CG(declarables).ticks) = IS_LONG; - Z_LVAL(CG(declarables).ticks) = 0; + ZVAL_LONG(&CG(declarables).ticks, 0); } /* }}} */ void zend_init_compiler_context(TSRMLS_D) /* {{{ */ { - CG(context).opcodes_size = (CG(active_op_array)->fn_flags & ZEND_ACC_INTERACTIVE) ? INITIAL_INTERACTIVE_OP_ARRAY_SIZE : INITIAL_OP_ARRAY_SIZE; + CG(context).opcodes_size = INITIAL_OP_ARRAY_SIZE; CG(context).vars_size = 0; CG(context).literals_size = 0; CG(context).current_brk_cont = -1; CG(context).backpatch_count = 0; - CG(context).nested_calls = 0; - CG(context).used_stack = 0; CG(context).in_finally = 0; CG(context).labels = NULL; } @@ -181,24 +165,20 @@ void zend_init_compiler_context(TSRMLS_D) /* {{{ */ void zend_init_compiler_data_structures(TSRMLS_D) /* {{{ */ { - zend_stack_init(&CG(bp_stack)); - zend_stack_init(&CG(function_call_stack)); - zend_stack_init(&CG(switch_cond_stack)); - zend_stack_init(&CG(foreach_copy_stack)); - zend_stack_init(&CG(object_stack)); - zend_stack_init(&CG(declare_stack)); + zend_stack_init(&CG(loop_var_stack), sizeof(znode)); + zend_stack_init(&CG(delayed_oplines_stack), sizeof(zend_op)); CG(active_class_entry) = NULL; - zend_llist_init(&CG(list_llist), sizeof(list_llist_element), NULL, 0); - zend_llist_init(&CG(dimension_llist), sizeof(int), NULL, 0); - zend_stack_init(&CG(list_stack)); CG(in_compilation) = 0; CG(start_lineno) = 0; CG(current_namespace) = NULL; CG(in_namespace) = 0; CG(has_bracketed_namespaces) = 0; CG(current_import) = NULL; + CG(current_import_function) = NULL; + CG(current_import_const) = NULL; + zend_hash_init(&CG(const_filenames), 8, NULL, NULL, 0); init_compiler_declarables(TSRMLS_C); - zend_stack_init(&CG(context_stack)); + zend_stack_init(&CG(context_stack), sizeof(CG(context))); CG(encoding_declared) = 0; } @@ -214,11 +194,12 @@ ZEND_API void file_handle_dtor(zend_file_handle *fh) /* {{{ */ void init_compiler(TSRMLS_D) /* {{{ */ { + CG(arena) = zend_arena_create(64 * 1024); CG(active_op_array) = NULL; memset(&CG(context), 0, sizeof(CG(context))); zend_init_compiler_data_structures(TSRMLS_C); zend_init_rsrc_list(TSRMLS_C); - zend_hash_init(&CG(filenames_table), 5, NULL, (dtor_func_t) free_estring, 0); + zend_hash_init(&CG(filenames_table), 8, NULL, free_string_zval, 0); zend_llist_init(&CG(open_files), sizeof(zend_file_handle), (void (*)(void *)) file_handle_dtor, 0); CG(unclean_shutdown) = 0; } @@ -226,42 +207,38 @@ void init_compiler(TSRMLS_D) /* {{{ */ void shutdown_compiler(TSRMLS_D) /* {{{ */ { - zend_stack_destroy(&CG(bp_stack)); - zend_stack_destroy(&CG(function_call_stack)); - zend_stack_destroy(&CG(switch_cond_stack)); - zend_stack_destroy(&CG(foreach_copy_stack)); - zend_stack_destroy(&CG(object_stack)); - zend_stack_destroy(&CG(declare_stack)); - zend_stack_destroy(&CG(list_stack)); + zend_stack_destroy(&CG(loop_var_stack)); + zend_stack_destroy(&CG(delayed_oplines_stack)); zend_hash_destroy(&CG(filenames_table)); - zend_llist_destroy(&CG(open_files)); + zend_hash_destroy(&CG(const_filenames)); zend_stack_destroy(&CG(context_stack)); + zend_arena_destroy(CG(arena)); } /* }}} */ -ZEND_API char *zend_set_compiled_filename(const char *new_compiled_filename TSRMLS_DC) /* {{{ */ +ZEND_API zend_string *zend_set_compiled_filename(zend_string *new_compiled_filename TSRMLS_DC) /* {{{ */ { - char **pp, *p; - int length = strlen(new_compiled_filename); + zend_string *p; - if (zend_hash_find(&CG(filenames_table), new_compiled_filename, length+1, (void **) &pp) == SUCCESS) { - CG(compiled_filename) = *pp; - return *pp; + p = zend_hash_find_ptr(&CG(filenames_table), new_compiled_filename); + if (p != NULL) { + CG(compiled_filename) = p; + return p; } - p = estrndup(new_compiled_filename, length); - zend_hash_update(&CG(filenames_table), new_compiled_filename, length+1, &p, sizeof(char *), (void **) &pp); + p = zend_string_copy(new_compiled_filename); + zend_hash_update_ptr(&CG(filenames_table), new_compiled_filename, p); CG(compiled_filename) = p; return p; } /* }}} */ -ZEND_API void zend_restore_compiled_filename(char *original_compiled_filename TSRMLS_DC) /* {{{ */ +ZEND_API void zend_restore_compiled_filename(zend_string *original_compiled_filename TSRMLS_DC) /* {{{ */ { CG(compiled_filename) = original_compiled_filename; } /* }}} */ -ZEND_API char *zend_get_compiled_filename(TSRMLS_D) /* {{{ */ +ZEND_API zend_string *zend_get_compiled_filename(TSRMLS_D) /* {{{ */ { return CG(compiled_filename); } @@ -279,24 +256,23 @@ ZEND_API zend_bool zend_is_compiling(TSRMLS_D) /* {{{ */ } /* }}} */ -static zend_uint get_temporary_variable(zend_op_array *op_array) /* {{{ */ +static uint32_t get_temporary_variable(zend_op_array *op_array) /* {{{ */ { - return (zend_uint)(zend_uintptr_t)EX_TMP_VAR_NUM(0, (op_array->T)++); + return (uint32_t)op_array->T++; } /* }}} */ -static int lookup_cv(zend_op_array *op_array, char* name, int name_len, ulong hash TSRMLS_DC) /* {{{ */ -{ +static int lookup_cv(zend_op_array *op_array, zend_string* name TSRMLS_DC) /* {{{ */{ int i = 0; - ulong hash_value = hash ? hash : zend_inline_hash_func(name, name_len+1); + zend_ulong hash_value = zend_string_hash_val(name); while (i < op_array->last_var) { - if (op_array->vars[i].name == name || - (op_array->vars[i].hash_value == hash_value && - op_array->vars[i].name_len == name_len && - memcmp(op_array->vars[i].name, name, name_len) == 0)) { - str_efree(name); - return i; + if (op_array->vars[i]->val == name->val || + (op_array->vars[i]->h == hash_value && + op_array->vars[i]->len == name->len && + memcmp(op_array->vars[i]->val, name->val, name->len) == 0)) { + zend_string_release(name); + return (int)(zend_intptr_t)EX_VAR_NUM_2(NULL, i); } i++; } @@ -304,12 +280,11 @@ static int lookup_cv(zend_op_array *op_array, char* name, int name_len, ulong ha op_array->last_var++; if (op_array->last_var > CG(context).vars_size) { CG(context).vars_size += 16; /* FIXME */ - op_array->vars = erealloc(op_array->vars, CG(context).vars_size * sizeof(zend_compiled_variable)); + op_array->vars = erealloc(op_array->vars, CG(context).vars_size * sizeof(zend_string*)); } - op_array->vars[i].name = zend_new_interned_string(name, name_len + 1, 1 TSRMLS_CC); - op_array->vars[i].name_len = name_len; - op_array->vars[i].hash_value = hash_value; - return i; + + op_array->vars[i] = zend_new_interned_string(name TSRMLS_CC); + return (int)(zend_intptr_t)EX_VAR_NUM_2(NULL, i); } /* }}} */ @@ -319,30 +294,30 @@ void zend_del_literal(zend_op_array *op_array, int n) /* {{{ */ if (n + 1 == op_array->last_literal) { op_array->last_literal--; } else { - Z_TYPE(CONSTANT_EX(op_array, n)) = IS_NULL; + ZVAL_UNDEF(&CONSTANT_EX(op_array, n)); } } /* }}} */ /* Common part of zend_add_literal and zend_append_individual_literal */ -static inline void zend_insert_literal(zend_op_array *op_array, const zval *zv, int literal_position TSRMLS_DC) /* {{{ */ +static inline void zend_insert_literal(zend_op_array *op_array, zval *zv, int literal_position TSRMLS_DC) /* {{{ */ { if (Z_TYPE_P(zv) == IS_STRING || Z_TYPE_P(zv) == IS_CONSTANT) { - zval *z = (zval*)zv; - Z_STRVAL_P(z) = (char*)zend_new_interned_string(Z_STRVAL_P(zv), Z_STRLEN_P(zv) + 1, 1 TSRMLS_CC); + zend_string_hash_val(Z_STR_P(zv)); + Z_STR_P(zv) = zend_new_interned_string(Z_STR_P(zv) TSRMLS_CC); + if (IS_INTERNED(Z_STR_P(zv))) { + Z_TYPE_FLAGS_P(zv) &= ~ (IS_TYPE_REFCOUNTED | IS_TYPE_COPYABLE); + } } - CONSTANT_EX(op_array, literal_position) = *zv; - Z_SET_REFCOUNT(CONSTANT_EX(op_array, literal_position), 2); - Z_SET_ISREF(CONSTANT_EX(op_array, literal_position)); - op_array->literals[literal_position].hash_value = 0; - op_array->literals[literal_position].cache_slot = -1; + ZVAL_COPY_VALUE(&CONSTANT_EX(op_array, literal_position), zv); + Z_CACHE_SLOT(op_array->literals[literal_position]) = -1; } /* }}} */ /* Is used while compiling a function, using the context to keep track of an approximate size to avoid to relocate to often. Literals are truncated to actual size in the second compiler pass (pass_two()). */ -int zend_add_literal(zend_op_array *op_array, const zval *zv TSRMLS_DC) /* {{{ */ +int zend_add_literal(zend_op_array *op_array, zval *zv TSRMLS_DC) /* {{{ */ { int i = op_array->last_literal; op_array->last_literal++; @@ -350,4781 +325,4279 @@ int zend_add_literal(zend_op_array *op_array, const zval *zv TSRMLS_DC) /* {{{ * while (i >= CG(context).literals_size) { CG(context).literals_size += 16; /* FIXME */ } - op_array->literals = (zend_literal*)erealloc(op_array->literals, CG(context).literals_size * sizeof(zend_literal)); + op_array->literals = (zval*)erealloc(op_array->literals, CG(context).literals_size * sizeof(zval)); } zend_insert_literal(op_array, zv, i TSRMLS_CC); return i; } /* }}} */ -/* Is used after normal compilation to append an additional literal. - Allocation is done precisely here. */ -int zend_append_individual_literal(zend_op_array *op_array, const zval *zv TSRMLS_DC) /* {{{ */ +static inline int zend_add_literal_string(zend_op_array *op_array, zend_string **str TSRMLS_DC) /* {{{ */ { - int i = op_array->last_literal; - op_array->last_literal++; - op_array->literals = (zend_literal*)erealloc(op_array->literals, (i + 1) * sizeof(zend_literal)); - zend_insert_literal(op_array, zv, i TSRMLS_CC); - return i; + int ret; + zval zv; + ZVAL_STR(&zv, *str); + ret = zend_add_literal(op_array, &zv TSRMLS_CC); + *str = Z_STR(zv); + return ret; } -/* }}} */ -int zend_add_func_name_literal(zend_op_array *op_array, const zval *zv TSRMLS_DC) /* {{{ */ +static int zend_add_func_name_literal(zend_op_array *op_array, zend_string *name TSRMLS_DC) /* {{{ */ { - int ret; - char *lc_name; - zval c; - int lc_literal; - - if (op_array->last_literal > 0 && - &op_array->literals[op_array->last_literal - 1].constant == zv && - op_array->literals[op_array->last_literal - 1].cache_slot == -1) { - /* we already have function name as last literal (do nothing) */ - ret = op_array->last_literal - 1; - } else { - ret = zend_add_literal(op_array, zv TSRMLS_CC); - } + /* Original name */ + int ret = zend_add_literal_string(op_array, &name TSRMLS_CC); - lc_name = zend_str_tolower_dup(Z_STRVAL_P(zv), Z_STRLEN_P(zv)); - ZVAL_STRINGL(&c, lc_name, Z_STRLEN_P(zv), 0); - lc_literal = zend_add_literal(CG(active_op_array), &c TSRMLS_CC); - CALCULATE_LITERAL_HASH(lc_literal); + /* Lowercased name */ + zend_string *lc_name = zend_string_alloc(name->len, 0); + zend_str_tolower_copy(lc_name->val, name->val, name->len); + zend_add_literal_string(op_array, &lc_name TSRMLS_CC); return ret; } /* }}} */ -int zend_add_ns_func_name_literal(zend_op_array *op_array, const zval *zv TSRMLS_DC) /* {{{ */ +static int zend_add_ns_func_name_literal(zend_op_array *op_array, zend_string *name TSRMLS_DC) /* {{{ */ { - int ret; - char *lc_name; - const char *ns_separator; - int lc_len; - zval c; - int lc_literal; - - if (op_array->last_literal > 0 && - &op_array->literals[op_array->last_literal - 1].constant == zv && - op_array->literals[op_array->last_literal - 1].cache_slot == -1) { - /* we already have function name as last literal (do nothing) */ - ret = op_array->last_literal - 1; - } else { - ret = zend_add_literal(op_array, zv TSRMLS_CC); - } + const char *unqualified_name; + size_t unqualified_name_len; + + /* Original name */ + int ret = zend_add_literal_string(op_array, &name TSRMLS_CC); - lc_name = zend_str_tolower_dup(Z_STRVAL_P(zv), Z_STRLEN_P(zv)); - ZVAL_STRINGL(&c, lc_name, Z_STRLEN_P(zv), 0); - lc_literal = zend_add_literal(CG(active_op_array), &c TSRMLS_CC); - CALCULATE_LITERAL_HASH(lc_literal); + /* Lowercased name */ + zend_string *lc_name = zend_string_alloc(name->len, 0); + zend_str_tolower_copy(lc_name->val, name->val, name->len); + zend_add_literal_string(op_array, &lc_name TSRMLS_CC); - ns_separator = (const char*)zend_memrchr(Z_STRVAL_P(zv), '\\', Z_STRLEN_P(zv)) + 1; - lc_len = Z_STRLEN_P(zv) - (ns_separator - Z_STRVAL_P(zv)); - lc_name = zend_str_tolower_dup(ns_separator, lc_len); - ZVAL_STRINGL(&c, lc_name, lc_len, 0); - lc_literal = zend_add_literal(CG(active_op_array), &c TSRMLS_CC); - CALCULATE_LITERAL_HASH(lc_literal); + /* Lowercased unqualfied name */ + if (zend_get_unqualified_name(name, &unqualified_name, &unqualified_name_len)) { + lc_name = zend_string_alloc(unqualified_name_len, 0); + zend_str_tolower_copy(lc_name->val, unqualified_name, unqualified_name_len); + zend_add_literal_string(op_array, &lc_name TSRMLS_CC); + } return ret; } /* }}} */ -int zend_add_class_name_literal(zend_op_array *op_array, const zval *zv TSRMLS_DC) /* {{{ */ +static int zend_add_class_name_literal(zend_op_array *op_array, zend_string *name TSRMLS_DC) /* {{{ */ { - int ret; - char *lc_name; - int lc_len; - zval c; - int lc_literal; - - if (op_array->last_literal > 0 && - &op_array->literals[op_array->last_literal - 1].constant == zv && - op_array->literals[op_array->last_literal - 1].cache_slot == -1) { - /* we already have function name as last literal (do nothing) */ - ret = op_array->last_literal - 1; - } else { - ret = zend_add_literal(op_array, zv TSRMLS_CC); - } + /* Original name */ + int ret = zend_add_literal_string(op_array, &name TSRMLS_CC); - if (Z_STRVAL_P(zv)[0] == '\\') { - lc_len = Z_STRLEN_P(zv) - 1; - lc_name = zend_str_tolower_dup(Z_STRVAL_P(zv) + 1, lc_len); - } else { - lc_len = Z_STRLEN_P(zv); - lc_name = zend_str_tolower_dup(Z_STRVAL_P(zv), lc_len); - } - ZVAL_STRINGL(&c, lc_name, lc_len, 0); - lc_literal = zend_add_literal(CG(active_op_array), &c TSRMLS_CC); - CALCULATE_LITERAL_HASH(lc_literal); + /* Lowercased name */ + zend_string *lc_name = zend_string_alloc(name->len, 0); + zend_str_tolower_copy(lc_name->val, name->val, name->len); + zend_add_literal_string(op_array, &lc_name TSRMLS_CC); - GET_CACHE_SLOT(ret); + zend_alloc_cache_slot(ret TSRMLS_CC); return ret; } /* }}} */ -int zend_add_const_name_literal(zend_op_array *op_array, const zval *zv, int unqualified TSRMLS_DC) /* {{{ */ +static int zend_add_const_name_literal(zend_op_array *op_array, zend_string *name, zend_bool unqualified TSRMLS_DC) /* {{{ */ { - int ret, tmp_literal; - char *name, *tmp_name; - const char *ns_separator; - int name_len, ns_len; - zval c; + zend_string *tmp_name; - if (op_array->last_literal > 0 && - &op_array->literals[op_array->last_literal - 1].constant == zv && - op_array->literals[op_array->last_literal - 1].cache_slot == -1) { - /* we already have function name as last literal (do nothing) */ - ret = op_array->last_literal - 1; - } else { - ret = zend_add_literal(op_array, zv TSRMLS_CC); - } + int ret = zend_add_literal_string(op_array, &name TSRMLS_CC); - /* skip leading '\\' */ - if (Z_STRVAL_P(zv)[0] == '\\') { - name_len = Z_STRLEN_P(zv) - 1; - name = Z_STRVAL_P(zv) + 1; - } else { - name_len = Z_STRLEN_P(zv); - name = Z_STRVAL_P(zv); - } - ns_separator = zend_memrchr(name, '\\', name_len); - if (ns_separator) { - ns_len = ns_separator - name; - } else { - ns_len = 0; - } + size_t ns_len = 0, after_ns_len = name->len; + const char *after_ns = zend_memrchr(name->val, '\\', name->len); + if (after_ns) { + after_ns += 1; + ns_len = after_ns - name->val - 1; + after_ns_len = name->len - ns_len - 1; - if (ns_len) { /* lowercased namespace name & original constant name */ - tmp_name = estrndup(name, name_len); - zend_str_tolower(tmp_name, ns_len); - ZVAL_STRINGL(&c, tmp_name, name_len, 0); - tmp_literal = zend_add_literal(CG(active_op_array), &c TSRMLS_CC); - CALCULATE_LITERAL_HASH(tmp_literal); + tmp_name = zend_string_init(name->val, name->len, 0); + zend_str_tolower(tmp_name->val, ns_len); + zend_add_literal_string(op_array, &tmp_name TSRMLS_CC); /* lowercased namespace name & lowercased constant name */ - tmp_name = zend_str_tolower_dup(name, name_len); - ZVAL_STRINGL(&c, tmp_name, name_len, 0); - tmp_literal = zend_add_literal(CG(active_op_array), &c TSRMLS_CC); - CALCULATE_LITERAL_HASH(tmp_literal); - } + tmp_name = zend_string_alloc(name->len, 0); + zend_str_tolower_copy(tmp_name->val, name->val, name->len); + zend_add_literal_string(op_array, &tmp_name TSRMLS_CC); - if (ns_len) { if (!unqualified) { return ret; } - ns_len++; - name += ns_len; - name_len -= ns_len; + } else { + after_ns = name->val; } - /* original constant name */ - tmp_name = estrndup(name, name_len); - ZVAL_STRINGL(&c, tmp_name, name_len, 0); - tmp_literal = zend_add_literal(CG(active_op_array), &c TSRMLS_CC); - CALCULATE_LITERAL_HASH(tmp_literal); + /* original unqualified constant name */ + tmp_name = zend_string_init(after_ns, after_ns_len, 0); + zend_add_literal_string(op_array, &tmp_name TSRMLS_CC); - /* lowercased constant name */ - tmp_name = zend_str_tolower_dup(name, name_len); - ZVAL_STRINGL(&c, tmp_name, name_len, 0); - tmp_literal = zend_add_literal(CG(active_op_array), &c TSRMLS_CC); - CALCULATE_LITERAL_HASH(tmp_literal); + /* lowercased unqualified constant name */ + tmp_name = zend_string_alloc(after_ns_len, 0); + zend_str_tolower_copy(tmp_name->val, after_ns, after_ns_len); + zend_add_literal_string(op_array, &tmp_name TSRMLS_CC); return ret; } /* }}} */ -#define LITERAL_STRINGL(op, str, len, copy) do { \ +#define LITERAL_STR(op, str) do { \ zval _c; \ - ZVAL_STRINGL(&_c, str, len, copy); \ + ZVAL_STR(&_c, str); \ op.constant = zend_add_literal(CG(active_op_array), &_c TSRMLS_CC); \ } while (0) -#define LITERAL_LONG(op, val) do { \ - zval _c; \ - ZVAL_LONG(&_c, val); \ - op.constant = zend_add_literal(CG(active_op_array), &_c TSRMLS_CC); \ - } while (0) +#define MAKE_NOP(opline) do { \ + opline->opcode = ZEND_NOP; \ + memset(&opline->result, 0, sizeof(opline->result)); \ + memset(&opline->op1, 0, sizeof(opline->op1)); \ + memset(&opline->op2, 0, sizeof(opline->op2)); \ + opline->result_type = opline->op1_type = opline->op2_type = IS_UNUSED; \ +} while (0) -#define LITERAL_LONG_EX(op_array, op, val) do { \ - zval _c; \ - ZVAL_LONG(&_c, val); \ - op.constant = zend_add_literal(op_array, &_c TSRMLS_CC); \ - } while (0) - -#define LITERAL_NULL(op) do { \ - zval _c; \ - INIT_ZVAL( _c); \ - op.constant = zend_add_literal(CG(active_op_array), &_c TSRMLS_CC); \ - } while (0) +void zend_stop_lexing(TSRMLS_D) { + LANG_SCNG(yy_cursor) = LANG_SCNG(yy_limit); +} -static inline zend_bool zend_is_function_or_method_call(const znode *variable) /* {{{ */ +static inline void zend_begin_loop(TSRMLS_D) /* {{{ */ { - zend_uint type = variable->EA; + zend_brk_cont_element *brk_cont_element; + int parent; - return ((type & ZEND_PARSED_METHOD_CALL) || (type == ZEND_PARSED_FUNCTION_CALL)); + parent = CG(context).current_brk_cont; + CG(context).current_brk_cont = CG(active_op_array)->last_brk_cont; + brk_cont_element = get_next_brk_cont_element(CG(active_op_array)); + brk_cont_element->start = get_next_op_number(CG(active_op_array)); + brk_cont_element->parent = parent; } /* }}} */ -void zend_do_binary_op(zend_uchar op, znode *result, const znode *op1, const znode *op2 TSRMLS_DC) /* {{{ */ +static inline void zend_end_loop(int cont_addr, int has_loop_var TSRMLS_DC) /* {{{ */ { - zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); - - opline->opcode = op; - opline->result_type = IS_TMP_VAR; - opline->result.var = get_temporary_variable(CG(active_op_array)); - SET_NODE(opline->op1, op1); - SET_NODE(opline->op2, op2); - GET_NODE(result, opline->result); + if (!has_loop_var) { + /* The start fileld is used to free temporary variables in case of exceptions. + * We won't try to free something of we don't have loop variable. + */ + CG(active_op_array)->brk_cont_array[CG(context).current_brk_cont].start = -1; + } + CG(active_op_array)->brk_cont_array[CG(context).current_brk_cont].cont = cont_addr; + CG(active_op_array)->brk_cont_array[CG(context).current_brk_cont].brk = get_next_op_number(CG(active_op_array)); + CG(context).current_brk_cont = CG(active_op_array)->brk_cont_array[CG(context).current_brk_cont].parent; } /* }}} */ -void zend_do_unary_op(zend_uchar op, znode *result, const znode *op1 TSRMLS_DC) /* {{{ */ +void zend_do_free(znode *op1 TSRMLS_DC) /* {{{ */ { - zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); + if (op1->op_type==IS_TMP_VAR) { + zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); - opline->opcode = op; - opline->result_type = IS_TMP_VAR; - opline->result.var = get_temporary_variable(CG(active_op_array)); - SET_NODE(opline->op1, op1); - GET_NODE(result, opline->result); - SET_UNUSED(opline->op2); + opline->opcode = ZEND_FREE; + SET_NODE(opline->op1, op1); + SET_UNUSED(opline->op2); + } else if (op1->op_type==IS_VAR) { + zend_op *opline = &CG(active_op_array)->opcodes[CG(active_op_array)->last-1]; + + while (opline->opcode == ZEND_END_SILENCE || opline->opcode == ZEND_EXT_FCALL_END || opline->opcode == ZEND_OP_DATA) { + opline--; + } + if (opline->result_type == IS_VAR + && opline->result.var == op1->u.op.var) { + if (opline->opcode == ZEND_FETCH_R || + opline->opcode == ZEND_FETCH_DIM_R || + opline->opcode == ZEND_FETCH_OBJ_R) { + /* It's very rare and useless case. It's better to use + additional FREE opcode and simplify the FETCH handlers + their selves */ + opline = get_next_op(CG(active_op_array) TSRMLS_CC); + opline->opcode = ZEND_FREE; + SET_NODE(opline->op1, op1); + SET_UNUSED(opline->op2); + } else { + opline->result_type |= EXT_TYPE_UNUSED; + } + } else { + while (opline>CG(active_op_array)->opcodes) { + if (opline->opcode == ZEND_FETCH_LIST && + opline->op1_type == IS_VAR && + opline->op1.var == op1->u.op.var) { + opline = get_next_op(CG(active_op_array) TSRMLS_CC); + + opline->opcode = ZEND_FREE; + SET_NODE(opline->op1, op1); + SET_UNUSED(opline->op2); + return; + } + if (opline->result_type==IS_VAR + && opline->result.var == op1->u.op.var) { + if (opline->opcode == ZEND_NEW) { + opline->result_type |= EXT_TYPE_UNUSED; + opline = &CG(active_op_array)->opcodes[CG(active_op_array)->last-1]; + while (opline->opcode != ZEND_DO_FCALL || opline->op1.num != ZEND_CALL_CTOR) { + opline--; + } + opline->op1.num |= ZEND_CALL_CTOR_RESULT_UNUSED; + } + break; + } + opline--; + } + } + } else if (op1->op_type == IS_CONST) { + /* Destroy value without using GC: When opcache moves arrays into SHM it will + * free the zend_array structure, so references to it from outside the op array + * become invalid. GC would cause such a reference in the root buffer. */ + zval_ptr_dtor_nogc(&op1->u.constant); + } } /* }}} */ -#define MAKE_NOP(opline) { opline->opcode = ZEND_NOP; memset(&opline->result,0,sizeof(opline->result)); memset(&opline->op1,0,sizeof(opline->op1)); memset(&opline->op2,0,sizeof(opline->op2)); opline->result_type=opline->op1_type=opline->op2_type=IS_UNUSED; } - -static void zend_do_op_data(zend_op *data_op, const znode *value TSRMLS_DC) /* {{{ */ +uint32_t zend_add_member_modifier(uint32_t flags, uint32_t new_flag) /* {{{ */ { - data_op->opcode = ZEND_OP_DATA; - SET_NODE(data_op->op1, value); - SET_UNUSED(data_op->op2); + uint32_t new_flags = flags | new_flag; + if ((flags & ZEND_ACC_PPP_MASK) && (new_flag & ZEND_ACC_PPP_MASK)) { + zend_error_noreturn(E_COMPILE_ERROR, "Multiple access type modifiers are not allowed"); + } + if ((flags & ZEND_ACC_ABSTRACT) && (new_flag & ZEND_ACC_ABSTRACT)) { + zend_error_noreturn(E_COMPILE_ERROR, "Multiple abstract modifiers are not allowed"); + } + if ((flags & ZEND_ACC_STATIC) && (new_flag & ZEND_ACC_STATIC)) { + zend_error_noreturn(E_COMPILE_ERROR, "Multiple static modifiers are not allowed"); + } + if ((flags & ZEND_ACC_FINAL) && (new_flag & ZEND_ACC_FINAL)) { + zend_error_noreturn(E_COMPILE_ERROR, "Multiple final modifiers are not allowed"); + } + if ((new_flags & ZEND_ACC_ABSTRACT) && (new_flags & ZEND_ACC_FINAL)) { + zend_error_noreturn(E_COMPILE_ERROR, "Cannot use the final modifier on an abstract class member"); + } + return new_flags; } /* }}} */ -void zend_do_binary_assign_op(zend_uchar op, znode *result, const znode *op1, const znode *op2 TSRMLS_DC) /* {{{ */ +zend_string *zend_concat3(char *str1, size_t str1_len, char *str2, size_t str2_len, char *str3, size_t str3_len) /* {{{ */ { - int last_op_number = get_next_op_number(CG(active_op_array)); - zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); + size_t len = str1_len + str2_len + str3_len; + zend_string *res = zend_string_alloc(len, 0); - if (last_op_number > 0) { - zend_op *last_op = &CG(active_op_array)->opcodes[last_op_number-1]; + memcpy(res->val, str1, str1_len); + memcpy(res->val + str1_len, str2, str2_len); + memcpy(res->val + str1_len + str2_len, str3, str3_len); + res->val[len] = '\0'; - switch (last_op->opcode) { - case ZEND_FETCH_OBJ_RW: - last_op->opcode = op; - last_op->extended_value = ZEND_ASSIGN_OBJ; + return res; +} - zend_do_op_data(opline, op2 TSRMLS_CC); - SET_UNUSED(opline->result); - GET_NODE(result, last_op->result); - return; - case ZEND_FETCH_DIM_RW: - last_op->opcode = op; - last_op->extended_value = ZEND_ASSIGN_DIM; - - zend_do_op_data(opline, op2 TSRMLS_CC); - opline->op2.var = get_temporary_variable(CG(active_op_array)); - opline->op2_type = IS_VAR; - SET_UNUSED(opline->result); - GET_NODE(result,last_op->result); - return; - default: - break; - } +zend_string *zend_concat_names(char *name1, size_t name1_len, char *name2, size_t name2_len) { + return zend_concat3(name1, name1_len, "\\", 1, name2, name2_len); +} + +zend_string *zend_prefix_with_ns(zend_string *name TSRMLS_DC) { + if (CG(current_namespace)) { + zend_string *ns = CG(current_namespace); + return zend_concat_names(ns->val, ns->len, name->val, name->len); + } else { + return zend_string_copy(name); } +} - opline->opcode = op; - SET_NODE(opline->op1, op1); - SET_NODE(opline->op2, op2); - opline->result_type = IS_VAR; - opline->result.var = get_temporary_variable(CG(active_op_array)); - GET_NODE(result, opline->result); +void *zend_hash_find_ptr_lc(HashTable *ht, const char *str, size_t len) { + void *result; + zend_string *lcname; + ALLOCA_FLAG(use_heap); + + STR_ALLOCA_ALLOC(lcname, len, use_heap); + zend_str_tolower_copy(lcname->val, str, len); + result = zend_hash_find_ptr(ht, lcname); + STR_ALLOCA_FREE(lcname, use_heap); + + return result; } -/* }}} */ -void fetch_simple_variable_ex(znode *result, znode *varname, int bp, zend_uchar op TSRMLS_DC) /* {{{ */ -{ - zend_op opline; - zend_op *opline_ptr; - zend_llist *fetch_list_ptr; +zend_string *zend_resolve_non_class_name( + zend_string *name, uint32_t type, zend_bool *is_fully_qualified, + zend_bool case_sensitive, HashTable *current_import_sub TSRMLS_DC +) { + char *compound; + *is_fully_qualified = 0; - if (varname->op_type == IS_CONST) { - ulong hash; + if (name->val[0] == '\\') { + /* Remove \ prefix (only relevant if this is a string rather than a label) */ + return zend_string_init(name->val + 1, name->len - 1, 0); + } - if (Z_TYPE(varname->u.constant) != IS_STRING) { - convert_to_string(&varname->u.constant); + if (type == ZEND_NAME_FQ) { + *is_fully_qualified = 1; + return zend_string_copy(name); + } + + if (type == ZEND_NAME_RELATIVE) { + *is_fully_qualified = 1; + return zend_prefix_with_ns(name TSRMLS_CC); + } + + if (current_import_sub) { + /* If an unqualified name is a function/const alias, replace it. */ + zend_string *import_name; + if (case_sensitive) { + import_name = zend_hash_find_ptr(current_import_sub, name); + } else { + import_name = zend_hash_find_ptr_lc(current_import_sub, name->val, name->len); } - hash = str_hash(Z_STRVAL(varname->u.constant), Z_STRLEN(varname->u.constant)); - if (!zend_is_auto_global_quick(Z_STRVAL(varname->u.constant), Z_STRLEN(varname->u.constant), hash TSRMLS_CC) && - !(Z_STRLEN(varname->u.constant) == (sizeof("this")-1) && - !memcmp(Z_STRVAL(varname->u.constant), "this", sizeof("this"))) && - (CG(active_op_array)->last == 0 || - CG(active_op_array)->opcodes[CG(active_op_array)->last-1].opcode != ZEND_BEGIN_SILENCE)) { - result->op_type = IS_CV; - result->u.op.var = lookup_cv(CG(active_op_array), Z_STRVAL(varname->u.constant), Z_STRLEN(varname->u.constant), hash TSRMLS_CC); - Z_STRVAL(varname->u.constant) = (char*)CG(active_op_array)->vars[result->u.op.var].name; - result->EA = 0; - return; + if (import_name) { + *is_fully_qualified = 1; + return zend_string_copy(import_name); } } - if (bp) { - opline_ptr = &opline; - init_op(opline_ptr TSRMLS_CC); - } else { - opline_ptr = get_next_op(CG(active_op_array) TSRMLS_CC); + compound = memchr(name->val, '\\', name->len); + if (compound) { + *is_fully_qualified = 1; } - opline_ptr->opcode = op; - opline_ptr->result_type = IS_VAR; - opline_ptr->result.var = get_temporary_variable(CG(active_op_array)); - SET_NODE(opline_ptr->op1, varname); - GET_NODE(result, opline_ptr->result); - SET_UNUSED(opline_ptr->op2); - opline_ptr->extended_value = ZEND_FETCH_LOCAL; + if (compound && CG(current_import)) { + /* If the first part of a qualified name is an alias, substitute it. */ + size_t len = compound - name->val; + zend_string *import_name = zend_hash_find_ptr_lc(CG(current_import), name->val, len); - if (varname->op_type == IS_CONST) { - CALCULATE_LITERAL_HASH(opline_ptr->op1.constant); - if (zend_is_auto_global_quick(Z_STRVAL(varname->u.constant), Z_STRLEN(varname->u.constant), Z_HASH_P(&CONSTANT(opline_ptr->op1.constant)) TSRMLS_CC)) { - opline_ptr->extended_value = ZEND_FETCH_GLOBAL; + if (import_name) { + return zend_concat_names( + import_name->val, import_name->len, name->val + len + 1, name->len - len - 1); } } - if (bp) { - zend_stack_top(&CG(bp_stack), (void **) &fetch_list_ptr); - zend_llist_add_element(fetch_list_ptr, opline_ptr); - } + return zend_prefix_with_ns(name TSRMLS_CC); } /* }}} */ -void fetch_simple_variable(znode *result, znode *varname, int bp TSRMLS_DC) /* {{{ */ +zend_string *zend_resolve_function_name(zend_string *name, uint32_t type, zend_bool *is_fully_qualified TSRMLS_DC) /* {{{ */ { - /* the default mode must be Write, since fetch_simple_variable() is used to define function arguments */ - fetch_simple_variable_ex(result, varname, bp, ZEND_FETCH_W TSRMLS_CC); + return zend_resolve_non_class_name( + name, type, is_fully_qualified, 0, CG(current_import_function) TSRMLS_CC); } /* }}} */ -void zend_do_fetch_static_member(znode *result, znode *class_name TSRMLS_DC) /* {{{ */ +zend_string *zend_resolve_const_name(zend_string *name, uint32_t type, zend_bool *is_fully_qualified TSRMLS_DC) /* {{{ */ { + return zend_resolve_non_class_name( + name, type, is_fully_qualified, 1, CG(current_import_const) TSRMLS_CC); +} +/* }}} */ + +zend_string *zend_resolve_class_name(zend_string *name, uint32_t type TSRMLS_DC) /* {{{ */ { - znode class_node; - zend_llist *fetch_list_ptr; - zend_llist_element *le; - zend_op *opline_ptr; - zend_op opline; + char *compound; - if (class_name->op_type == IS_CONST && - ZEND_FETCH_CLASS_DEFAULT == zend_get_class_fetch_type(Z_STRVAL(class_name->u.constant), Z_STRLEN(class_name->u.constant))) { - zend_resolve_class_name(class_name TSRMLS_CC); - class_node = *class_name; - } else { - zend_do_fetch_class(&class_node, class_name TSRMLS_CC); - } - zend_stack_top(&CG(bp_stack), (void **) &fetch_list_ptr); - if (result->op_type == IS_CV) { - init_op(&opline TSRMLS_CC); - - opline.opcode = ZEND_FETCH_W; - opline.result_type = IS_VAR; - opline.result.var = get_temporary_variable(CG(active_op_array)); - opline.op1_type = IS_CONST; - LITERAL_STRINGL(opline.op1, estrdup(CG(active_op_array)->vars[result->u.op.var].name), CG(active_op_array)->vars[result->u.op.var].name_len, 0); - CALCULATE_LITERAL_HASH(opline.op1.constant); - GET_POLYMORPHIC_CACHE_SLOT(opline.op1.constant); - if (class_node.op_type == IS_CONST) { - opline.op2_type = IS_CONST; - opline.op2.constant = - zend_add_class_name_literal(CG(active_op_array), &class_node.u.constant TSRMLS_CC); + if (type == ZEND_NAME_RELATIVE) { + return zend_prefix_with_ns(name TSRMLS_CC); + } + + if (type == ZEND_NAME_FQ || name->val[0] == '\\') { + /* Remove \ prefix (only relevant if this is a string rather than a label) */ + if (name->val[0] == '\\') { + name = zend_string_init(name->val + 1, name->len - 1, 0); } else { - SET_NODE(opline.op2, &class_node); + zend_string_addref(name); + } + /* Ensure that \self, \parent and \static are not used */ + if (ZEND_FETCH_CLASS_DEFAULT != zend_get_class_fetch_type(name)) { + zend_error_noreturn(E_COMPILE_ERROR, "'\\%s' is an invalid class name", name->val); } - GET_NODE(result,opline.result); - opline.extended_value |= ZEND_FETCH_STATIC_MEMBER; - opline_ptr = &opline; + return name; + } - zend_llist_add_element(fetch_list_ptr, &opline); - } else { - le = fetch_list_ptr->head; - - opline_ptr = (zend_op *)le->data; - if (opline_ptr->opcode != ZEND_FETCH_W && opline_ptr->op1_type == IS_CV) { - init_op(&opline TSRMLS_CC); - opline.opcode = ZEND_FETCH_W; - opline.result_type = IS_VAR; - opline.result.var = get_temporary_variable(CG(active_op_array)); - opline.op1_type = IS_CONST; - LITERAL_STRINGL(opline.op1, estrdup(CG(active_op_array)->vars[opline_ptr->op1.var].name), CG(active_op_array)->vars[opline_ptr->op1.var].name_len, 0); - CALCULATE_LITERAL_HASH(opline.op1.constant); - GET_POLYMORPHIC_CACHE_SLOT(opline.op1.constant); - if (class_node.op_type == IS_CONST) { - opline.op2_type = IS_CONST; - opline.op2.constant = - zend_add_class_name_literal(CG(active_op_array), &class_node.u.constant TSRMLS_CC); - } else { - SET_NODE(opline.op2, &class_node); + if (CG(current_import)) { + compound = memchr(name->val, '\\', name->len); + if (compound) { + /* If the first part of a qualified name is an alias, substitute it. */ + size_t len = compound - name->val; + zend_string *import_name = zend_hash_find_ptr_lc(CG(current_import), name->val, len); + + if (import_name) { + return zend_concat_names( + import_name->val, import_name->len, name->val + len + 1, name->len - len - 1); } - opline.extended_value |= ZEND_FETCH_STATIC_MEMBER; - COPY_NODE(opline_ptr->op1, opline.result); - - zend_llist_prepend_element(fetch_list_ptr, &opline); } else { - if (opline_ptr->op1_type == IS_CONST) { - GET_POLYMORPHIC_CACHE_SLOT(opline_ptr->op1.constant); - } - if (class_node.op_type == IS_CONST) { - opline_ptr->op2_type = IS_CONST; - opline_ptr->op2.constant = - zend_add_class_name_literal(CG(active_op_array), &class_node.u.constant TSRMLS_CC); - } else { - SET_NODE(opline_ptr->op2, &class_node); + /* If an unqualified name is an alias, replace it. */ + zend_string *import_name + = zend_hash_find_ptr_lc(CG(current_import), name->val, name->len); + + if (import_name) { + return zend_string_copy(import_name); } - opline_ptr->extended_value |= ZEND_FETCH_STATIC_MEMBER; } } + + /* If not fully qualified and not an alias, prepend the current namespace */ + return zend_prefix_with_ns(name TSRMLS_CC); +} +/* }}} */ + +zend_string *zend_resolve_class_name_ast(zend_ast *ast TSRMLS_DC) /* {{{ */ +{ + zend_string *name = zend_ast_get_str(ast); + return zend_resolve_class_name(name, ast->attr TSRMLS_CC); } /* }}} */ -void fetch_array_begin(znode *result, znode *varname, znode *first_dim TSRMLS_DC) /* {{{ */ +static void ptr_dtor(zval *zv) /* {{{ */ { - fetch_simple_variable(result, varname, 1 TSRMLS_CC); + efree(Z_PTR_P(zv)); +} +/* }}} */ - fetch_array_dim(result, result, first_dim TSRMLS_CC); +static void str_dtor(zval *zv) /* {{{ */ { + zend_string_release(Z_STR_P(zv)); } /* }}} */ -void fetch_array_dim(znode *result, const znode *parent, const znode *dim TSRMLS_DC) /* {{{ */ +void zend_resolve_goto_label(zend_op_array *op_array, zend_op *opline, int pass2 TSRMLS_DC) /* {{{ */ { - zend_op opline; - zend_llist *fetch_list_ptr; + zend_label *dest; + zend_long current, distance; + zval *label; - zend_stack_top(&CG(bp_stack), (void **) &fetch_list_ptr); + if (pass2) { + label = opline->op2.zv; + } else { + label = &CONSTANT_EX(op_array, opline->op2.constant); + } + if (CG(context).labels == NULL || + (dest = zend_hash_find_ptr(CG(context).labels, Z_STR_P(label))) == NULL) { - if (zend_is_function_or_method_call(parent)) { - init_op(&opline TSRMLS_CC); - opline.opcode = ZEND_SEPARATE; - SET_NODE(opline.op1, parent); - SET_UNUSED(opline.op2); - opline.result_type = IS_VAR; - opline.result.var = opline.op1.var; - zend_llist_add_element(fetch_list_ptr, &opline); + if (pass2) { + CG(in_compilation) = 1; + CG(active_op_array) = op_array; + CG(zend_lineno) = opline->lineno; + zend_error_noreturn(E_COMPILE_ERROR, "'goto' to undefined label '%s'", Z_STRVAL_P(label)); + } else { + /* Label is not defined. Delay to pass 2. */ + return; + } } - init_op(&opline TSRMLS_CC); - opline.opcode = ZEND_FETCH_DIM_W; /* the backpatching routine assumes W */ - opline.result_type = IS_VAR; - opline.result.var = get_temporary_variable(CG(active_op_array)); - SET_NODE(opline.op1, parent); - SET_NODE(opline.op2, dim); - if (opline.op2_type == IS_CONST && Z_TYPE(CONSTANT(opline.op2.constant)) == IS_STRING) { - ulong index; - int numeric = 0; + opline->op1.opline_num = dest->opline_num; + zval_dtor(label); + ZVAL_NULL(label); - ZEND_HANDLE_NUMERIC_EX(Z_STRVAL(CONSTANT(opline.op2.constant)), Z_STRLEN(CONSTANT(opline.op2.constant))+1, index, numeric = 1); - if (numeric) { - zval_dtor(&CONSTANT(opline.op2.constant)); - ZVAL_LONG(&CONSTANT(opline.op2.constant), index); - } else { - CALCULATE_LITERAL_HASH(opline.op2.constant); + /* Check that we are not moving into loop or switch */ + current = opline->extended_value; + for (distance = 0; current != dest->brk_cont; distance++) { + if (current == -1) { + if (pass2) { + CG(in_compilation) = 1; + CG(active_op_array) = op_array; + CG(zend_lineno) = opline->lineno; + } + zend_error_noreturn(E_COMPILE_ERROR, "'goto' into loop or switch statement is disallowed"); } + current = op_array->brk_cont_array[current].parent; } - GET_NODE(result, opline.result); + if (distance == 0) { + /* Nothing to break out of, optimize to ZEND_JMP */ + opline->opcode = ZEND_JMP; + opline->extended_value = 0; + SET_UNUSED(opline->op2); + } else { + /* Set real break distance */ + ZVAL_LONG(label, distance); + } +} +/* }}} */ - zend_llist_add_element(fetch_list_ptr, &opline); +void zend_release_labels(int temporary TSRMLS_DC) /* {{{ */ +{ + if (CG(context).labels) { + zend_hash_destroy(CG(context).labels); + FREE_HASHTABLE(CG(context).labels); + CG(context).labels = NULL; + } + if (!temporary && !zend_stack_is_empty(&CG(context_stack))) { + zend_compiler_context *ctx = zend_stack_top(&CG(context_stack)); + CG(context) = *ctx; + zend_stack_del_top(&CG(context_stack)); + } } /* }}} */ -void fetch_string_offset(znode *result, const znode *parent, const znode *offset TSRMLS_DC) /* {{{ */ +static zend_bool zend_is_call(zend_ast *ast); + +static int generate_free_loop_var(znode *var TSRMLS_DC) /* {{{ */ { - fetch_array_dim(result, parent, offset TSRMLS_CC); + switch (var->op_type) { + case IS_UNUSED: + /* Stack separator on function boundary, stop applying */ + return 1; + case IS_VAR: + case IS_TMP_VAR: + { + zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); + + opline->opcode = ZEND_FREE; + SET_NODE(opline->op1, var); + SET_UNUSED(opline->op2); + } + } + + return 0; } /* }}} */ -void zend_do_print(znode *result, const znode *arg TSRMLS_DC) /* {{{ */ +static uint32_t zend_add_try_element(uint32_t try_op TSRMLS_DC) /* {{{ */ { - zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); + zend_op_array *op_array = CG(active_op_array); + uint32_t try_catch_offset = op_array->last_try_catch++; + zend_try_catch_element *elem; - opline->result_type = IS_TMP_VAR; - opline->result.var = get_temporary_variable(CG(active_op_array)); - opline->opcode = ZEND_PRINT; - SET_NODE(opline->op1, arg); - SET_UNUSED(opline->op2); - GET_NODE(result, opline->result); + op_array->try_catch_array = safe_erealloc( + op_array->try_catch_array, sizeof(zend_try_catch_element), op_array->last_try_catch, 0); + + elem = &op_array->try_catch_array[try_catch_offset]; + elem->try_op = try_op; + elem->catch_op = 0; + elem->finally_op = 0; + elem->finally_end = 0; + + return try_catch_offset; } /* }}} */ -void zend_do_echo(const znode *arg TSRMLS_DC) /* {{{ */ +ZEND_API void function_add_ref(zend_function *function) /* {{{ */ { - zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); + if (function->type == ZEND_USER_FUNCTION) { + zend_op_array *op_array = &function->op_array; - opline->opcode = ZEND_ECHO; - SET_NODE(opline->op1, arg); - SET_UNUSED(opline->op2); + (*op_array->refcount)++; + if (op_array->static_variables) { + HashTable *static_variables = op_array->static_variables; + + ALLOC_HASHTABLE(op_array->static_variables); + zend_array_dup(op_array->static_variables, static_variables); + } + op_array->run_time_cache = NULL; + } else if (function->type == ZEND_INTERNAL_FUNCTION) { + if (function->common.function_name) { + zend_string_addref(function->common.function_name); + } + } } /* }}} */ -void zend_do_abstract_method(const znode *function_name, znode *modifiers, const znode *body TSRMLS_DC) /* {{{ */ +ZEND_API int do_bind_function(const zend_op_array *op_array, const zend_op *opline, HashTable *function_table, zend_bool compile_time TSRMLS_DC) /* {{{ */ { - char *method_type; + zend_function *function, *new_function; + zval *op1, *op2; - if (CG(active_class_entry)->ce_flags & ZEND_ACC_INTERFACE) { - Z_LVAL(modifiers->u.constant) |= ZEND_ACC_ABSTRACT; - method_type = "Interface"; + if (compile_time) { + op1 = &CONSTANT_EX(op_array, opline->op1.constant); + op2 = &CONSTANT_EX(op_array, opline->op2.constant); } else { - method_type = "Abstract"; + op1 = opline->op1.zv; + op2 = opline->op2.zv; } - if (Z_LVAL(modifiers->u.constant) & ZEND_ACC_ABSTRACT) { - if(Z_LVAL(modifiers->u.constant) & ZEND_ACC_PRIVATE) { - zend_error(E_COMPILE_ERROR, "%s function %s::%s() cannot be declared private", method_type, CG(active_class_entry)->name, Z_STRVAL(function_name->u.constant)); - } - if (Z_LVAL(body->u.constant) == ZEND_ACC_ABSTRACT) { - zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); + function = zend_hash_find_ptr(function_table, Z_STR_P(op1)); + new_function = zend_arena_alloc(&CG(arena), sizeof(zend_op_array)); + memcpy(new_function, function, sizeof(zend_op_array)); + if (zend_hash_add_ptr(function_table, Z_STR_P(op2), new_function) == NULL) { + int error_level = compile_time ? E_COMPILE_ERROR : E_ERROR; + zend_function *old_function; - opline->opcode = ZEND_RAISE_ABSTRACT_ERROR; - SET_UNUSED(opline->op1); - SET_UNUSED(opline->op2); + efree_size(new_function, sizeof(zend_op_array)); + if ((old_function = zend_hash_find_ptr(function_table, Z_STR_P(op2))) != NULL + && old_function->type == ZEND_USER_FUNCTION + && old_function->op_array.last > 0) { + zend_error(error_level, "Cannot redeclare %s() (previously declared in %s:%d)", + function->common.function_name->val, + old_function->op_array.filename->val, + old_function->op_array.opcodes[0].lineno); } else { - /* we had code in the function body */ - zend_error(E_COMPILE_ERROR, "%s function %s::%s() cannot contain body", method_type, CG(active_class_entry)->name, Z_STRVAL(function_name->u.constant)); + zend_error(error_level, "Cannot redeclare %s()", function->common.function_name->val); } + return FAILURE; } else { - if (Z_LVAL(body->u.constant) == ZEND_ACC_ABSTRACT) { - zend_error(E_COMPILE_ERROR, "Non-abstract method %s::%s() must contain body", CG(active_class_entry)->name, Z_STRVAL(function_name->u.constant)); - } + (*function->op_array.refcount)++; + function->op_array.static_variables = NULL; /* NULL out the unbound function */ + return SUCCESS; } } /* }}} */ -static zend_bool opline_is_fetch_this(const zend_op *opline TSRMLS_DC) /* {{{ */ +ZEND_API zend_class_entry *do_bind_class(const zend_op_array* op_array, const zend_op *opline, HashTable *class_table, zend_bool compile_time TSRMLS_DC) /* {{{ */ { - if ((opline->opcode == ZEND_FETCH_W) && (opline->op1_type == IS_CONST) - && (Z_TYPE(CONSTANT(opline->op1.constant)) == IS_STRING) - && (Z_HASH_P(&CONSTANT(opline->op1.constant)) == THIS_HASHVAL) - && (Z_STRLEN(CONSTANT(opline->op1.constant)) == (sizeof("this")-1)) - && !memcmp(Z_STRVAL(CONSTANT(opline->op1.constant)), "this", sizeof("this"))) { - return 1; + zend_class_entry *ce; + zval *op1, *op2; + + if (compile_time) { + op1 = &CONSTANT_EX(op_array, opline->op1.constant); + op2 = &CONSTANT_EX(op_array, opline->op2.constant); } else { - return 0; + op1 = opline->op1.zv; + op2 = opline->op2.zv; + } + if ((ce = zend_hash_find_ptr(class_table, Z_STR_P(op1))) == NULL) { + zend_error_noreturn(E_COMPILE_ERROR, "Internal Zend error - Missing class information for %s", Z_STRVAL_P(op1)); + return NULL; + } + ce->refcount++; + if (zend_hash_add_ptr(class_table, Z_STR_P(op2), ce) == NULL) { + ce->refcount--; + if (!compile_time) { + /* If we're in compile time, in practice, it's quite possible + * that we'll never reach this class declaration at runtime, + * so we shut up about it. This allows the if (!defined('FOO')) { return; } + * approach to work. + */ + zend_error_noreturn(E_COMPILE_ERROR, "Cannot redeclare class %s", ce->name->val); + } + return NULL; + } else { + if (!(ce->ce_flags & (ZEND_ACC_INTERFACE|ZEND_ACC_IMPLEMENT_INTERFACES|ZEND_ACC_IMPLEMENT_TRAITS))) { + zend_verify_abstract_class(ce TSRMLS_CC); + } + return ce; } } /* }}} */ -void zend_do_assign(znode *result, znode *variable, znode *value TSRMLS_DC) /* {{{ */ +ZEND_API zend_class_entry *do_bind_inherited_class(const zend_op_array *op_array, const zend_op *opline, HashTable *class_table, zend_class_entry *parent_ce, zend_bool compile_time TSRMLS_DC) /* {{{ */ { - int last_op_number; - zend_op *opline; - - if (value->op_type == IS_CV) { - zend_llist *fetch_list_ptr; + zend_class_entry *ce; + zval *op1, *op2; - zend_stack_top(&CG(bp_stack), (void **) &fetch_list_ptr); - if (fetch_list_ptr && fetch_list_ptr->head) { - opline = (zend_op *)fetch_list_ptr->head->data; + if (compile_time) { + op1 = &CONSTANT_EX(op_array, opline->op1.constant); + op2 = &CONSTANT_EX(op_array, opline->op2.constant); + } else { + op1 = opline->op1.zv; + op2 = opline->op2.zv; + } - if (opline->opcode == ZEND_FETCH_DIM_W && - opline->op1_type == IS_CV && - opline->op1.var == value->u.op.var) { + ce = zend_hash_find_ptr(class_table, Z_STR_P(op1)); - opline = get_next_op(CG(active_op_array) TSRMLS_CC); - opline->opcode = ZEND_FETCH_R; - opline->result_type = IS_VAR; - opline->result.var = get_temporary_variable(CG(active_op_array)); - opline->op1_type = IS_CONST; - LITERAL_STRINGL(opline->op1, - CG(active_op_array)->vars[value->u.op.var].name, - CG(active_op_array)->vars[value->u.op.var].name_len, 1); - CALCULATE_LITERAL_HASH(opline->op1.constant); - SET_UNUSED(opline->op2); - opline->extended_value = ZEND_FETCH_LOCAL; - GET_NODE(value, opline->result); - } + if (!ce) { + if (!compile_time) { + /* If we're in compile time, in practice, it's quite possible + * that we'll never reach this class declaration at runtime, + * so we shut up about it. This allows the if (!defined('FOO')) { return; } + * approach to work. + */ + zend_error_noreturn(E_COMPILE_ERROR, "Cannot redeclare class %s", Z_STRVAL_P(op2)); } + return NULL; } - zend_do_end_variable_parse(variable, BP_VAR_W, 0 TSRMLS_CC); + if (parent_ce->ce_flags & ZEND_ACC_INTERFACE) { + zend_error_noreturn(E_COMPILE_ERROR, "Class %s cannot extend from interface %s", ce->name->val, parent_ce->name->val); + } else if ((parent_ce->ce_flags & ZEND_ACC_TRAIT) == ZEND_ACC_TRAIT) { + zend_error_noreturn(E_COMPILE_ERROR, "Class %s cannot extend from trait %s", ce->name->val, parent_ce->name->val); + } - last_op_number = get_next_op_number(CG(active_op_array)); - opline = get_next_op(CG(active_op_array) TSRMLS_CC); + zend_do_inheritance(ce, parent_ce TSRMLS_CC); + + ce->refcount++; + + /* Register the derived class */ + if (zend_hash_add_ptr(class_table, Z_STR_P(op2), ce) == NULL) { + zend_error_noreturn(E_COMPILE_ERROR, "Cannot redeclare class %s", ce->name->val); + } + return ce; +} +/* }}} */ + +void zend_do_early_binding(TSRMLS_D) /* {{{ */ +{ + zend_op *opline = &CG(active_op_array)->opcodes[CG(active_op_array)->last-1]; + HashTable *table; + + while (opline->opcode == ZEND_TICKS && opline > CG(active_op_array)->opcodes) { + opline--; + } + + switch (opline->opcode) { + case ZEND_DECLARE_FUNCTION: + if (do_bind_function(CG(active_op_array), opline, CG(function_table), 1 TSRMLS_CC) == FAILURE) { + return; + } + table = CG(function_table); + break; + case ZEND_DECLARE_CLASS: + if (do_bind_class(CG(active_op_array), opline, CG(class_table), 1 TSRMLS_CC) == NULL) { + return; + } + table = CG(class_table); + break; + case ZEND_DECLARE_INHERITED_CLASS: + { + zend_op *fetch_class_opline = opline-1; + zval *parent_name; + zend_class_entry *ce; - if (variable->op_type == IS_CV) { - if (variable->u.op.var == CG(active_op_array)->this_var) { - zend_error(E_COMPILE_ERROR, "Cannot re-assign $this"); - } - } else if (variable->op_type == IS_VAR) { - int n = 0; - - while (last_op_number - n > 0) { - zend_op *last_op; - - last_op = &CG(active_op_array)->opcodes[last_op_number-n-1]; - - if (last_op->result_type == IS_VAR && - last_op->result.var == variable->u.op.var) { - if (last_op->opcode == ZEND_FETCH_OBJ_W) { - if (n > 0) { - int opline_no = (opline-CG(active_op_array)->opcodes)/sizeof(*opline); - *opline = *last_op; - MAKE_NOP(last_op); - /* last_op = opline; */ - opline = get_next_op(CG(active_op_array) TSRMLS_CC); - /* get_next_op can realloc, we need to move last_op */ - last_op = &CG(active_op_array)->opcodes[opline_no]; + parent_name = &CONSTANT(fetch_class_opline->op2.constant); + if (((ce = zend_lookup_class(Z_STR_P(parent_name) TSRMLS_CC)) == NULL) || + ((CG(compiler_options) & ZEND_COMPILE_IGNORE_INTERNAL_CLASSES) && + (ce->type == ZEND_INTERNAL_CLASS))) { + if (CG(compiler_options) & ZEND_COMPILE_DELAYED_BINDING) { + uint32_t *opline_num = &CG(active_op_array)->early_binding; + + while (*opline_num != -1) { + opline_num = &CG(active_op_array)->opcodes[*opline_num].result.opline_num; + } + *opline_num = opline - CG(active_op_array)->opcodes; + opline->opcode = ZEND_DECLARE_INHERITED_CLASS_DELAYED; + opline->result_type = IS_UNUSED; + opline->result.opline_num = -1; } - last_op->opcode = ZEND_ASSIGN_OBJ; - zend_do_op_data(opline, value TSRMLS_CC); - SET_UNUSED(opline->result); - GET_NODE(result, last_op->result); return; - } else if (last_op->opcode == ZEND_FETCH_DIM_W) { - if (n > 0) { - int opline_no = (opline-CG(active_op_array)->opcodes)/sizeof(*opline); - *opline = *last_op; - MAKE_NOP(last_op); - /* last_op = opline; */ - /* TBFixed: this can realloc opcodes, leaving last_op pointing wrong */ - opline = get_next_op(CG(active_op_array) TSRMLS_CC); - /* get_next_op can realloc, we need to move last_op */ - last_op = &CG(active_op_array)->opcodes[opline_no]; - } - last_op->opcode = ZEND_ASSIGN_DIM; - zend_do_op_data(opline, value TSRMLS_CC); - opline->op2.var = get_temporary_variable(CG(active_op_array)); - opline->op2_type = IS_VAR; - SET_UNUSED(opline->result); - GET_NODE(result, last_op->result); + } + if (do_bind_inherited_class(CG(active_op_array), opline, CG(class_table), ce, 1 TSRMLS_CC) == NULL) { return; - } else if (opline_is_fetch_this(last_op TSRMLS_CC)) { - zend_error(E_COMPILE_ERROR, "Cannot re-assign $this"); - } else { - break; } + /* clear unnecessary ZEND_FETCH_CLASS opcode */ + zend_del_literal(CG(active_op_array), fetch_class_opline->op2.constant); + MAKE_NOP(fetch_class_opline); + + table = CG(class_table); + break; } - n++; - } + case ZEND_VERIFY_ABSTRACT_CLASS: + case ZEND_ADD_INTERFACE: + case ZEND_ADD_TRAIT: + case ZEND_BIND_TRAITS: + /* We currently don't early-bind classes that implement interfaces */ + /* Classes with traits are handled exactly the same, no early-bind here */ + return; + default: + zend_error_noreturn(E_COMPILE_ERROR, "Invalid binding type"); + return; } - opline->opcode = ZEND_ASSIGN; - SET_NODE(opline->op1, variable); - SET_NODE(opline->op2, value); - opline->result_type = IS_VAR; - opline->result.var = get_temporary_variable(CG(active_op_array)); - GET_NODE(result, opline->result); + zend_hash_del(table, Z_STR(CONSTANT(opline->op1.constant))); + zend_del_literal(CG(active_op_array), opline->op1.constant); + zend_del_literal(CG(active_op_array), opline->op2.constant); + MAKE_NOP(opline); } /* }}} */ -void zend_do_assign_ref(znode *result, const znode *lvar, const znode *rvar TSRMLS_DC) /* {{{ */ +ZEND_API void zend_do_delayed_early_binding(const zend_op_array *op_array TSRMLS_DC) /* {{{ */ { - zend_op *opline; - - if (lvar->op_type == IS_CV) { - if (lvar->u.op.var == CG(active_op_array)->this_var) { - zend_error(E_COMPILE_ERROR, "Cannot re-assign $this"); - } - } else if (lvar->op_type == IS_VAR) { - int last_op_number = get_next_op_number(CG(active_op_array)); + if (op_array->early_binding != -1) { + zend_bool orig_in_compilation = CG(in_compilation); + uint32_t opline_num = op_array->early_binding; + zend_class_entry *ce; - if (last_op_number > 0) { - opline = &CG(active_op_array)->opcodes[last_op_number-1]; - if (opline_is_fetch_this(opline TSRMLS_CC)) { - zend_error(E_COMPILE_ERROR, "Cannot re-assign $this"); + CG(in_compilation) = 1; + while (opline_num != -1) { + if ((ce = zend_lookup_class(Z_STR_P(op_array->opcodes[opline_num-1].op2.zv) TSRMLS_CC)) != NULL) { + do_bind_inherited_class(op_array, &op_array->opcodes[opline_num], EG(class_table), ce, 0 TSRMLS_CC); } - } - } - - opline = get_next_op(CG(active_op_array) TSRMLS_CC); - opline->opcode = ZEND_ASSIGN_REF; - if (zend_is_function_or_method_call(rvar)) { - opline->extended_value = ZEND_RETURNS_FUNCTION; - } else if (rvar->EA & ZEND_PARSED_NEW) { - opline->extended_value = ZEND_RETURNS_NEW; - } else { - opline->extended_value = 0; - } - if (result) { - opline->result_type = IS_VAR; - opline->result.var = get_temporary_variable(CG(active_op_array)); - GET_NODE(result, opline->result); - } else { - opline->result_type = IS_UNUSED | EXT_TYPE_UNUSED; + opline_num = op_array->opcodes[opline_num].result.opline_num; + } + CG(in_compilation) = orig_in_compilation; } - SET_NODE(opline->op1, lvar); - SET_NODE(opline->op2, rvar); } /* }}} */ -static inline void do_begin_loop(TSRMLS_D) /* {{{ */ +ZEND_API zend_string *zend_mangle_property_name(const char *src1, size_t src1_length, const char *src2, size_t src2_length, int internal) /* {{{ */ { - zend_brk_cont_element *brk_cont_element; - int parent; + size_t prop_name_length = 1 + src1_length + 1 + src2_length; + zend_string *prop_name = zend_string_alloc(prop_name_length, internal); - parent = CG(context).current_brk_cont; - CG(context).current_brk_cont = CG(active_op_array)->last_brk_cont; - brk_cont_element = get_next_brk_cont_element(CG(active_op_array)); - brk_cont_element->start = get_next_op_number(CG(active_op_array)); - brk_cont_element->parent = parent; + prop_name->val[0] = '\0'; + memcpy(prop_name->val + 1, src1, src1_length+1); + memcpy(prop_name->val + 1 + src1_length + 1, src2, src2_length+1); + return prop_name; } /* }}} */ -static inline void do_end_loop(int cont_addr, int has_loop_var TSRMLS_DC) /* {{{ */ +static int zend_strnlen(const char* s, size_t maxlen) /* {{{ */ { - if (!has_loop_var) { - /* The start fileld is used to free temporary variables in case of exceptions. - * We won't try to free something of we don't have loop variable. - */ - CG(active_op_array)->brk_cont_array[CG(context).current_brk_cont].start = -1; - } - CG(active_op_array)->brk_cont_array[CG(context).current_brk_cont].cont = cont_addr; - CG(active_op_array)->brk_cont_array[CG(context).current_brk_cont].brk = get_next_op_number(CG(active_op_array)); - CG(context).current_brk_cont = CG(active_op_array)->brk_cont_array[CG(context).current_brk_cont].parent; + size_t len = 0; + while (*s++ && maxlen--) len++; + return len; } /* }}} */ -void zend_do_while_cond(const znode *expr, znode *close_bracket_token TSRMLS_DC) /* {{{ */ +ZEND_API int zend_unmangle_property_name_ex(const zend_string *name, const char **class_name, const char **prop_name, size_t *prop_len) /* {{{ */ { - int while_cond_op_number = get_next_op_number(CG(active_op_array)); - zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); + size_t class_name_len; - opline->opcode = ZEND_JMPZ; - SET_NODE(opline->op1, expr); - close_bracket_token->u.op.opline_num = while_cond_op_number; - SET_UNUSED(opline->op2); + *class_name = NULL; - do_begin_loop(TSRMLS_C); - INC_BPC(CG(active_op_array)); + if (name->val[0] != '\0') { + *prop_name = name->val; + if (prop_len) { + *prop_len = name->len; + } + return SUCCESS; + } + if (name->len < 3 || name->val[1] == '\0') { + zend_error(E_NOTICE, "Illegal member variable name"); + *prop_name = name->val; + if (prop_len) { + *prop_len = name->len; + } + return FAILURE; + } + + class_name_len = zend_strnlen(name->val + 1, name->len - 2); + if (class_name_len >= name->len - 2 || name->val[class_name_len + 1] != '\0') { + zend_error(E_NOTICE, "Corrupt member variable name"); + *prop_name = name->val; + if (prop_len) { + *prop_len = name->len; + } + return FAILURE; + } + + *class_name = name->val + 1; + *prop_name = name->val + class_name_len + 2; + if (prop_len) { + *prop_len = name->len - class_name_len - 2; + } + return SUCCESS; } /* }}} */ -void zend_do_while_end(const znode *while_token, const znode *close_bracket_token TSRMLS_DC) /* {{{ */ +static zend_constant *zend_lookup_reserved_const(const char *name, size_t len TSRMLS_DC) /* {{{ */ { - zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); + zend_constant *c = zend_hash_find_ptr_lc(EG(zend_constants), name, len); + if (c && !(c->flags & CONST_CS) && (c->flags & CONST_CT_SUBST)) { + return c; + } + return NULL; +} +/* }}} */ - /* add unconditional jump */ - opline->opcode = ZEND_JMP; - opline->op1.opline_num = while_token->u.op.opline_num; - SET_UNUSED(opline->op1); - SET_UNUSED(opline->op2); +static zend_bool zend_try_ct_eval_const(zval *zv, zend_string *name, zend_bool is_fully_qualified TSRMLS_DC) /* {{{ */ +{ + zend_constant *c; - /* update while's conditional jmp */ - CG(active_op_array)->opcodes[close_bracket_token->u.op.opline_num].op2.opline_num = get_next_op_number(CG(active_op_array)); + if (!(CG(compiler_options) & ZEND_COMPILE_NO_CONSTANT_SUBSTITUTION)) { + /* Substitute case-sensitive (or lowercase) persistent constants */ + c = zend_hash_find_ptr(EG(zend_constants), name); + if (c && (c->flags & CONST_PERSISTENT)) { + ZVAL_DUP(zv, &c->value); + return 1; + } + } - do_end_loop(while_token->u.op.opline_num, 0 TSRMLS_CC); + { + /* Substitute true, false and null (including unqualified usage in namespaces) */ + const char *lookup_name = name->val; + size_t lookup_len = name->len; + + if (!is_fully_qualified) { + zend_get_unqualified_name(name, &lookup_name, &lookup_len); + } - DEC_BPC(CG(active_op_array)); + c = zend_lookup_reserved_const(lookup_name, lookup_len TSRMLS_CC); + if (c) { + ZVAL_DUP(zv, &c->value); + return 1; + } + } + + return 0; } /* }}} */ -void zend_do_for_cond(const znode *expr, znode *second_semicolon_token TSRMLS_DC) /* {{{ */ +void zend_init_list(void *result, void *item TSRMLS_DC) /* {{{ */ { - int for_cond_op_number = get_next_op_number(CG(active_op_array)); - zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); + void** list = emalloc(sizeof(void*) * 2); - opline->opcode = ZEND_JMPZNZ; - SET_NODE(opline->op1, expr); /* the conditional expression */ - second_semicolon_token->u.op.opline_num = for_cond_op_number; - SET_UNUSED(opline->op2); + list[0] = item; + list[1] = NULL; + + *(void**)result = list; } /* }}} */ -void zend_do_for_before_statement(const znode *cond_start, const znode *second_semicolon_token TSRMLS_DC) /* {{{ */ +void zend_add_to_list(void *result, void *item TSRMLS_DC) /* {{{ */ { - zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); + void** list = *(void**)result; + size_t n = 0; - opline->opcode = ZEND_JMP; - opline->op1.opline_num = cond_start->u.op.opline_num; - CG(active_op_array)->opcodes[second_semicolon_token->u.op.opline_num].extended_value = get_next_op_number(CG(active_op_array)); - SET_UNUSED(opline->op1); - SET_UNUSED(opline->op2); + if (list) { + while (list[n]) { + n++; + } + } + + list = erealloc(list, sizeof(void*) * (n+2)); - do_begin_loop(TSRMLS_C); + list[n] = item; + list[n+1] = NULL; - INC_BPC(CG(active_op_array)); + *(void**)result = list; } /* }}} */ -void zend_do_for_end(const znode *second_semicolon_token TSRMLS_DC) /* {{{ */ +void zend_do_extended_info(TSRMLS_D) /* {{{ */ { - zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); + zend_op *opline; - opline->opcode = ZEND_JMP; - opline->op1.opline_num = second_semicolon_token->u.op.opline_num+1; - CG(active_op_array)->opcodes[second_semicolon_token->u.op.opline_num].op2.opline_num = get_next_op_number(CG(active_op_array)); - SET_UNUSED(opline->op1); - SET_UNUSED(opline->op2); + if (!(CG(compiler_options) & ZEND_COMPILE_EXTENDED_INFO)) { + return; + } - do_end_loop(second_semicolon_token->u.op.opline_num+1, 0 TSRMLS_CC); + opline = get_next_op(CG(active_op_array) TSRMLS_CC); - DEC_BPC(CG(active_op_array)); + opline->opcode = ZEND_EXT_STMT; + SET_UNUSED(opline->op1); + SET_UNUSED(opline->op2); } /* }}} */ -void zend_do_pre_incdec(znode *result, const znode *op1, zend_uchar op TSRMLS_DC) /* {{{ */ +void zend_do_extended_fcall_begin(TSRMLS_D) /* {{{ */ { - int last_op_number = get_next_op_number(CG(active_op_array)); zend_op *opline; - if (last_op_number > 0) { - zend_op *last_op = &CG(active_op_array)->opcodes[last_op_number-1]; - - if (last_op->opcode == ZEND_FETCH_OBJ_RW) { - last_op->opcode = (op==ZEND_PRE_INC)?ZEND_PRE_INC_OBJ:ZEND_PRE_DEC_OBJ; - last_op->result_type = IS_VAR; - last_op->result.var = get_temporary_variable(CG(active_op_array)); - GET_NODE(result, last_op->result); - return; - } + if (!(CG(compiler_options) & ZEND_COMPILE_EXTENDED_INFO)) { + return; } opline = get_next_op(CG(active_op_array) TSRMLS_CC); - opline->opcode = op; - SET_NODE(opline->op1, op1); + + opline->opcode = ZEND_EXT_FCALL_BEGIN; + SET_UNUSED(opline->op1); SET_UNUSED(opline->op2); - opline->result_type = IS_VAR; - opline->result.var = get_temporary_variable(CG(active_op_array)); - GET_NODE(result, opline->result); } /* }}} */ -void zend_do_post_incdec(znode *result, const znode *op1, zend_uchar op TSRMLS_DC) /* {{{ */ +void zend_do_extended_fcall_end(TSRMLS_D) /* {{{ */ { - int last_op_number = get_next_op_number(CG(active_op_array)); zend_op *opline; - if (last_op_number > 0) { - zend_op *last_op = &CG(active_op_array)->opcodes[last_op_number-1]; - - if (last_op->opcode == ZEND_FETCH_OBJ_RW) { - last_op->opcode = (op==ZEND_POST_INC)?ZEND_POST_INC_OBJ:ZEND_POST_DEC_OBJ; - last_op->result_type = IS_TMP_VAR; - last_op->result.var = get_temporary_variable(CG(active_op_array)); - GET_NODE(result, last_op->result); - return; - } + if (!(CG(compiler_options) & ZEND_COMPILE_EXTENDED_INFO)) { + return; } opline = get_next_op(CG(active_op_array) TSRMLS_CC); - opline->opcode = op; - SET_NODE(opline->op1, op1); + + opline->opcode = ZEND_EXT_FCALL_END; + SET_UNUSED(opline->op1); SET_UNUSED(opline->op2); - opline->result_type = IS_TMP_VAR; - opline->result.var = get_temporary_variable(CG(active_op_array)); - GET_NODE(result, opline->result); } /* }}} */ -void zend_do_if_cond(const znode *cond, znode *closing_bracket_token TSRMLS_DC) /* {{{ */ +zend_bool zend_is_auto_global(zend_string *name TSRMLS_DC) /* {{{ */ { - int if_cond_op_number = get_next_op_number(CG(active_op_array)); - zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); + zend_auto_global *auto_global; - opline->opcode = ZEND_JMPZ; - SET_NODE(opline->op1, cond); - closing_bracket_token->u.op.opline_num = if_cond_op_number; - SET_UNUSED(opline->op2); - INC_BPC(CG(active_op_array)); + if ((auto_global = zend_hash_find_ptr(CG(auto_globals), name)) != NULL) { + if (auto_global->armed) { + auto_global->armed = auto_global->auto_global_callback(auto_global->name TSRMLS_CC); + } + return 1; + } + return 0; } /* }}} */ -void zend_do_if_after_statement(const znode *closing_bracket_token, unsigned char initialize TSRMLS_DC) /* {{{ */ +int zend_register_auto_global(zend_string *name, zend_bool jit, zend_auto_global_callback auto_global_callback TSRMLS_DC) /* {{{ */ { - int if_end_op_number = get_next_op_number(CG(active_op_array)); - zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); - zend_llist *jmp_list_ptr; + zend_auto_global auto_global; + int retval; - opline->opcode = ZEND_JMP; - /* save for backpatching */ - if (initialize) { - zend_llist jmp_list; + auto_global.name = zend_new_interned_string(name TSRMLS_CC); + auto_global.auto_global_callback = auto_global_callback; + auto_global.jit = jit; - zend_llist_init(&jmp_list, sizeof(int), NULL, 0); - zend_stack_push(&CG(bp_stack), (void *) &jmp_list, sizeof(zend_llist)); - } - zend_stack_top(&CG(bp_stack), (void **) &jmp_list_ptr); - zend_llist_add_element(jmp_list_ptr, &if_end_op_number); + retval = zend_hash_add_mem(CG(auto_globals), name, &auto_global, sizeof(zend_auto_global)) != NULL ? SUCCESS : FAILURE; - CG(active_op_array)->opcodes[closing_bracket_token->u.op.opline_num].op2.opline_num = if_end_op_number+1; - SET_UNUSED(opline->op1); - SET_UNUSED(opline->op2); + zend_string_release(auto_global.name); + return retval; } /* }}} */ -void zend_do_if_end(TSRMLS_D) /* {{{ */ +ZEND_API void zend_activate_auto_globals(TSRMLS_D) /* {{{ */ { - int next_op_number = get_next_op_number(CG(active_op_array)); - zend_llist *jmp_list_ptr; - zend_llist_element *le; + zend_auto_global *auto_global; - zend_stack_top(&CG(bp_stack), (void **) &jmp_list_ptr); - for (le=jmp_list_ptr->head; le; le = le->next) { - CG(active_op_array)->opcodes[*((int *) le->data)].op1.opline_num = next_op_number; - } - zend_llist_destroy(jmp_list_ptr); - zend_stack_del_top(&CG(bp_stack)); - DEC_BPC(CG(active_op_array)); + ZEND_HASH_FOREACH_PTR(CG(auto_globals), auto_global) { + if (auto_global->jit) { + auto_global->armed = 1; + } else if (auto_global->auto_global_callback) { + auto_global->armed = auto_global->auto_global_callback(auto_global->name TSRMLS_CC); + } else { + auto_global->armed = 0; + } + } ZEND_HASH_FOREACH_END(); } /* }}} */ -void zend_check_writable_variable(const znode *variable) /* {{{ */ +int zendlex(zend_parser_stack_elem *elem TSRMLS_DC) /* {{{ */ { - zend_uint type = variable->EA; + zval zv; + int retval; - if (type & ZEND_PARSED_METHOD_CALL) { - zend_error(E_COMPILE_ERROR, "Can't use method return value in write context"); - } - if (type == ZEND_PARSED_FUNCTION_CALL) { - zend_error(E_COMPILE_ERROR, "Can't use function return value in write context"); + if (CG(increment_lineno)) { + CG(zend_lineno)++; + CG(increment_lineno) = 0; } -} -/* }}} */ -void zend_do_begin_variable_parse(TSRMLS_D) /* {{{ */ -{ - zend_llist fetch_list; +again: + ZVAL_UNDEF(&zv); + retval = lex_scan(&zv TSRMLS_CC); + switch (retval) { + case T_COMMENT: + case T_DOC_COMMENT: + case T_OPEN_TAG: + case T_WHITESPACE: + goto again; + + case T_CLOSE_TAG: + if (LANG_SCNG(yy_text)[LANG_SCNG(yy_leng)-1] != '>') { + CG(increment_lineno) = 1; + } + retval = ';'; /* implicit ; */ + break; + case T_OPEN_TAG_WITH_ECHO: + retval = T_ECHO; + break; + } + if (Z_TYPE(zv) != IS_UNDEF) { + elem->ast = zend_ast_create_zval(&zv); + } - zend_llist_init(&fetch_list, sizeof(zend_op), NULL, 0); - zend_stack_push(&CG(bp_stack), (void *) &fetch_list, sizeof(zend_llist)); + return retval; } /* }}} */ -void zend_do_end_variable_parse(znode *variable, int type, int arg_offset TSRMLS_DC) /* {{{ */ +ZEND_API void zend_initialize_class_data(zend_class_entry *ce, zend_bool nullify_handlers TSRMLS_DC) /* {{{ */ { - zend_llist *fetch_list_ptr; - zend_llist_element *le; - zend_op *opline = NULL; - zend_op *opline_ptr; - zend_uint this_var = -1; - - zend_stack_top(&CG(bp_stack), (void **) &fetch_list_ptr); + zend_bool persistent_hashes = (ce->type == ZEND_INTERNAL_CLASS) ? 1 : 0; + dtor_func_t zval_ptr_dtor_func = ((persistent_hashes) ? ZVAL_INTERNAL_PTR_DTOR : ZVAL_PTR_DTOR); - le = fetch_list_ptr->head; + ce->refcount = 1; + ce->ce_flags = ZEND_ACC_CONSTANTS_UPDATED; - /* TODO: $foo->x->y->z = 1 should fetch "x" and "y" for R or RW, not just W */ + ce->default_properties_table = NULL; + ce->default_static_members_table = NULL; + zend_hash_init_ex(&ce->properties_info, 8, NULL, (persistent_hashes ? zend_destroy_property_info_internal : zend_destroy_property_info), persistent_hashes, 0); + zend_hash_init_ex(&ce->constants_table, 8, NULL, zval_ptr_dtor_func, persistent_hashes, 0); + zend_hash_init_ex(&ce->function_table, 8, NULL, ZEND_FUNCTION_DTOR, persistent_hashes, 0); - if (le) { - opline_ptr = (zend_op *)le->data; - if (opline_is_fetch_this(opline_ptr TSRMLS_CC)) { - /* convert to FETCH_?(this) into IS_CV */ - if (CG(active_op_array)->last == 0 || - CG(active_op_array)->opcodes[CG(active_op_array)->last-1].opcode != ZEND_BEGIN_SILENCE) { + if (ce->type == ZEND_INTERNAL_CLASS) { +#ifdef ZTS + int n = zend_hash_num_elements(CG(class_table)); - this_var = opline_ptr->result.var; - if (CG(active_op_array)->this_var == -1) { - CG(active_op_array)->this_var = lookup_cv(CG(active_op_array), Z_STRVAL(CONSTANT(opline_ptr->op1.constant)), Z_STRLEN(CONSTANT(opline_ptr->op1.constant)), Z_HASH_P(&CONSTANT(opline_ptr->op1.constant)) TSRMLS_CC); - Z_TYPE(CONSTANT(opline_ptr->op1.constant)) = IS_NULL; - } else { - zend_del_literal(CG(active_op_array), opline_ptr->op1.constant); - } - le = le->next; - if (variable->op_type == IS_VAR && - variable->u.op.var == this_var) { - variable->op_type = IS_CV; - variable->u.op.var = CG(active_op_array)->this_var; - } - } else if (CG(active_op_array)->this_var == -1) { - CG(active_op_array)->this_var = lookup_cv(CG(active_op_array), estrndup("this", sizeof("this")-1), sizeof("this")-1, THIS_HASHVAL TSRMLS_CC); - } + if (CG(static_members_table) && n >= CG(last_static_member)) { + /* Support for run-time declaration: dl() */ + CG(last_static_member) = n+1; + CG(static_members_table) = realloc(CG(static_members_table), (n+1)*sizeof(zval*)); + CG(static_members_table)[n] = NULL; } + ce->static_members_table = (zval*)(zend_intptr_t)n; +#else + ce->static_members_table = NULL; +#endif + } else { + ce->static_members_table = ce->default_static_members_table; + ce->info.user.doc_comment = NULL; + } - while (le) { - opline_ptr = (zend_op *)le->data; - if (opline_ptr->opcode == ZEND_SEPARATE) { - if (type != BP_VAR_R && type != BP_VAR_IS) { - opline = get_next_op(CG(active_op_array) TSRMLS_CC); - memcpy(opline, opline_ptr, sizeof(zend_op)); - } - le = le->next; - continue; - } - opline = get_next_op(CG(active_op_array) TSRMLS_CC); - memcpy(opline, opline_ptr, sizeof(zend_op)); - if (opline->op1_type == IS_VAR && - opline->op1.var == this_var) { - opline->op1_type = IS_CV; - opline->op1.var = CG(active_op_array)->this_var; - } - switch (type) { - case BP_VAR_R: - if (opline->opcode == ZEND_FETCH_DIM_W && opline->op2_type == IS_UNUSED) { - zend_error(E_COMPILE_ERROR, "Cannot use [] for reading"); - } - opline->opcode -= 3; - break; - case BP_VAR_W: - break; - case BP_VAR_RW: - opline->opcode += 3; - break; - case BP_VAR_IS: - if (opline->opcode == ZEND_FETCH_DIM_W && opline->op2_type == IS_UNUSED) { - zend_error(E_COMPILE_ERROR, "Cannot use [] for reading"); - } - opline->opcode += 6; /* 3+3 */ - break; - case BP_VAR_FUNC_ARG: - opline->opcode += 9; /* 3+3+3 */ - opline->extended_value |= arg_offset; - break; - case BP_VAR_UNSET: - if (opline->opcode == ZEND_FETCH_DIM_W && opline->op2_type == IS_UNUSED) { - zend_error(E_COMPILE_ERROR, "Cannot use [] for unsetting"); - } - opline->opcode += 12; /* 3+3+3+3 */ - break; - } - le = le->next; - } - if (opline && type == BP_VAR_W && arg_offset) { - opline->extended_value |= ZEND_FETCH_MAKE_REF; + ce->default_properties_count = 0; + ce->default_static_members_count = 0; + + if (nullify_handlers) { + ce->constructor = NULL; + ce->destructor = NULL; + ce->clone = NULL; + ce->__get = NULL; + ce->__set = NULL; + ce->__unset = NULL; + ce->__isset = NULL; + ce->__call = NULL; + ce->__callstatic = NULL; + ce->__tostring = NULL; + ce->create_object = NULL; + ce->get_iterator = NULL; + ce->iterator_funcs.funcs = NULL; + ce->interface_gets_implemented = NULL; + ce->get_static_method = NULL; + ce->parent = NULL; + ce->num_interfaces = 0; + ce->interfaces = NULL; + ce->num_traits = 0; + ce->traits = NULL; + ce->trait_aliases = NULL; + ce->trait_precedences = NULL; + ce->serialize = NULL; + ce->unserialize = NULL; + ce->serialize_func = NULL; + ce->unserialize_func = NULL; + ce->__debugInfo = NULL; + if (ce->type == ZEND_INTERNAL_CLASS) { + ce->info.internal.module = NULL; + ce->info.internal.builtin_functions = NULL; } } - zend_llist_destroy(fetch_list_ptr); - zend_stack_del_top(&CG(bp_stack)); } /* }}} */ -void zend_do_add_string(znode *result, const znode *op1, znode *op2 TSRMLS_DC) /* {{{ */ +uint32_t zend_get_class_fetch_type(zend_string *name) /* {{{ */ { - zend_op *opline; - - if (Z_STRLEN(op2->u.constant) > 1) { - opline = get_next_op(CG(active_op_array) TSRMLS_CC); - opline->opcode = ZEND_ADD_STRING; - } else if (Z_STRLEN(op2->u.constant) == 1) { - int ch = *Z_STRVAL(op2->u.constant); - - /* Free memory and use ZEND_ADD_CHAR in case of 1 character strings */ - efree(Z_STRVAL(op2->u.constant)); - ZVAL_LONG(&op2->u.constant, ch); - opline = get_next_op(CG(active_op_array) TSRMLS_CC); - opline->opcode = ZEND_ADD_CHAR; - } else { /* String can be empty after a variable at the end of a heredoc */ - efree(Z_STRVAL(op2->u.constant)); - return; - } - - if (op1) { - SET_NODE(opline->op1, op1); - SET_NODE(opline->result, op1); + if (zend_string_equals_literal_ci(name, "self")) { + return ZEND_FETCH_CLASS_SELF; + } else if (zend_string_equals_literal_ci(name, "parent")) { + return ZEND_FETCH_CLASS_PARENT; + } else if (zend_string_equals_literal_ci(name, "static")) { + return ZEND_FETCH_CLASS_STATIC; } else { - SET_UNUSED(opline->op1); - opline->result_type = IS_TMP_VAR; - opline->result.var = get_temporary_variable(CG(active_op_array)); + return ZEND_FETCH_CLASS_DEFAULT; } - SET_NODE(opline->op2, op2); - GET_NODE(result, opline->result); } /* }}} */ -void zend_do_add_variable(znode *result, const znode *op1, const znode *op2 TSRMLS_DC) /* {{{ */ +ZEND_API zend_string *zend_get_compiled_variable_name(const zend_op_array *op_array, uint32_t var) /* {{{ */ { - zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); - - opline->opcode = ZEND_ADD_VAR; - - if (op1) { - SET_NODE(opline->op1, op1); - SET_NODE(opline->result, op1); - } else { - SET_UNUSED(opline->op1); - opline->result_type = IS_TMP_VAR; - opline->result.var = get_temporary_variable(CG(active_op_array)); - } - SET_NODE(opline->op2, op2); - GET_NODE(result, opline->result); + return op_array->vars[EX_VAR_TO_NUM(var)]; } /* }}} */ -void zend_do_free(znode *op1 TSRMLS_DC) /* {{{ */ +zend_ast *zend_ast_append_str(zend_ast *left_ast, zend_ast *right_ast) /* {{{ */ { - if (op1->op_type==IS_TMP_VAR) { - zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); + zval *left_zv = zend_ast_get_zval(left_ast); + zend_string *left = Z_STR_P(left_zv); + zend_string *right = zend_ast_get_str(right_ast); - opline->opcode = ZEND_FREE; - SET_NODE(opline->op1, op1); - SET_UNUSED(opline->op2); - } else if (op1->op_type==IS_VAR) { - zend_op *opline = &CG(active_op_array)->opcodes[CG(active_op_array)->last-1]; + zend_string *result; + size_t left_len = left->len; + size_t len = left_len + right->len + 1; /* left\right */ - while (opline->opcode == ZEND_END_SILENCE || opline->opcode == ZEND_EXT_FCALL_END || opline->opcode == ZEND_OP_DATA) { - opline--; - } - if (opline->result_type == IS_VAR - && opline->result.var == op1->u.op.var) { - if (opline->opcode == ZEND_FETCH_R || - opline->opcode == ZEND_FETCH_DIM_R || - opline->opcode == ZEND_FETCH_OBJ_R || - opline->opcode == ZEND_QM_ASSIGN_VAR) { - /* It's very rare and useless case. It's better to use - additional FREE opcode and simplify the FETCH handlers - their selves */ - opline = get_next_op(CG(active_op_array) TSRMLS_CC); - opline->opcode = ZEND_FREE; - SET_NODE(opline->op1, op1); - SET_UNUSED(opline->op2); - } else { - opline->result_type |= EXT_TYPE_UNUSED; - } - } else { - while (opline>CG(active_op_array)->opcodes) { - if (opline->opcode == ZEND_FETCH_DIM_R - && opline->op1_type == IS_VAR - && opline->op1.var == op1->u.op.var) { - /* This should the end of a list() construct - * Mark its result as unused - */ - opline->extended_value = ZEND_FETCH_STANDARD; - break; - } else if (opline->result_type==IS_VAR - && opline->result.var == op1->u.op.var) { - if (opline->opcode == ZEND_NEW) { - opline->result_type |= EXT_TYPE_UNUSED; - } - break; - } - opline--; - } - } - } else if (op1->op_type == IS_CONST) { - zval_dtor(&op1->u.constant); - } + result = zend_string_realloc(left, len, 0); + result->val[left_len] = '\\'; + memcpy(&result->val[left_len + 1], right->val, right->len); + result->val[len] = '\0'; + zend_string_release(right); + + ZVAL_STR(left_zv, result); + return left_ast; } /* }}} */ -int zend_do_verify_access_types(const znode *current_access_type, const znode *new_modifier) /* {{{ */ +/* A hacky way that is used to store the doc comment for properties */ +zend_ast *zend_ast_append_doc_comment(zend_ast *list TSRMLS_DC) /* {{{ */ { - if ((Z_LVAL(current_access_type->u.constant) & ZEND_ACC_PPP_MASK) - && (Z_LVAL(new_modifier->u.constant) & ZEND_ACC_PPP_MASK)) { - zend_error(E_COMPILE_ERROR, "Multiple access type modifiers are not allowed"); - } - if ((Z_LVAL(current_access_type->u.constant) & ZEND_ACC_ABSTRACT) - && (Z_LVAL(new_modifier->u.constant) & ZEND_ACC_ABSTRACT)) { - zend_error(E_COMPILE_ERROR, "Multiple abstract modifiers are not allowed"); - } - if ((Z_LVAL(current_access_type->u.constant) & ZEND_ACC_STATIC) - && (Z_LVAL(new_modifier->u.constant) & ZEND_ACC_STATIC)) { - zend_error(E_COMPILE_ERROR, "Multiple static modifiers are not allowed"); - } - if ((Z_LVAL(current_access_type->u.constant) & ZEND_ACC_FINAL) - && (Z_LVAL(new_modifier->u.constant) & ZEND_ACC_FINAL)) { - zend_error(E_COMPILE_ERROR, "Multiple final modifiers are not allowed"); - } - if (((Z_LVAL(current_access_type->u.constant) | Z_LVAL(new_modifier->u.constant)) & (ZEND_ACC_ABSTRACT | ZEND_ACC_FINAL)) == (ZEND_ACC_ABSTRACT | ZEND_ACC_FINAL)) { - zend_error(E_COMPILE_ERROR, "Cannot use the final modifier on an abstract class member"); + if (CG(doc_comment)) { + list = zend_ast_list_add(list, zend_ast_create_zval_from_str(CG(doc_comment))); + CG(doc_comment) = NULL; } - return (Z_LVAL(current_access_type->u.constant) | Z_LVAL(new_modifier->u.constant)); + + return list; } /* }}} */ -void zend_do_begin_function_declaration(znode *function_token, znode *function_name, int is_method, int return_reference, znode *fn_flags_znode TSRMLS_DC) /* {{{ */ +void zend_verify_namespace(TSRMLS_D) /* {{{ */ { - zend_op_array op_array; - char *name = Z_STRVAL(function_name->u.constant); - int name_len = Z_STRLEN(function_name->u.constant); - int function_begin_line = function_token->u.op.opline_num; - zend_uint fn_flags; - const char *lcname; - zend_bool orig_interactive; - ALLOCA_FLAG(use_heap) - - if (is_method) { - if (CG(active_class_entry)->ce_flags & ZEND_ACC_INTERFACE) { - if ((Z_LVAL(fn_flags_znode->u.constant) & ~(ZEND_ACC_STATIC|ZEND_ACC_PUBLIC))) { - zend_error(E_COMPILE_ERROR, "Access type for interface method %s::%s() must be omitted", CG(active_class_entry)->name, Z_STRVAL(function_name->u.constant)); - } - Z_LVAL(fn_flags_znode->u.constant) |= ZEND_ACC_ABSTRACT; /* propagates to the rest of the parser */ - } - fn_flags = Z_LVAL(fn_flags_znode->u.constant); /* must be done *after* the above check */ - } else { - fn_flags = 0; - } - if ((fn_flags & ZEND_ACC_STATIC) && (fn_flags & ZEND_ACC_ABSTRACT) && !(CG(active_class_entry)->ce_flags & ZEND_ACC_INTERFACE)) { - zend_error(E_STRICT, "Static function %s%s%s() should not be abstract", is_method ? CG(active_class_entry)->name : "", is_method ? "::" : "", Z_STRVAL(function_name->u.constant)); + if (CG(has_bracketed_namespaces) && !CG(in_namespace)) { + zend_error_noreturn(E_COMPILE_ERROR, "No code may exist outside of namespace {}"); } +} +/* }}} */ - function_token->u.op_array = CG(active_op_array); - - orig_interactive = CG(interactive); - CG(interactive) = 0; - init_op_array(&op_array, ZEND_USER_FUNCTION, INITIAL_OP_ARRAY_SIZE TSRMLS_CC); - CG(interactive) = orig_interactive; - - op_array.function_name = name; - if (return_reference) { - op_array.fn_flags |= ZEND_ACC_RETURN_REFERENCE; +static void zend_reset_import_tables(TSRMLS_D) /* {{{ */ +{ + if (CG(current_import)) { + zend_hash_destroy(CG(current_import)); + efree(CG(current_import)); + CG(current_import) = NULL; } - op_array.fn_flags |= fn_flags; - op_array.scope = is_method?CG(active_class_entry):NULL; - op_array.prototype = NULL; + if (CG(current_import_function)) { + zend_hash_destroy(CG(current_import_function)); + efree(CG(current_import_function)); + CG(current_import_function) = NULL; + } - op_array.line_start = zend_get_compiled_lineno(TSRMLS_C); + if (CG(current_import_const)) { + zend_hash_destroy(CG(current_import_const)); + efree(CG(current_import_const)); + CG(current_import_const) = NULL; + } +} +/* }}} */ - if (is_method) { - zend_ulong hash; +static void zend_end_namespace(TSRMLS_D) /* {{{ */ { + CG(in_namespace) = 0; + zend_reset_import_tables(TSRMLS_C); + if (CG(current_namespace)) { + zend_string_release(CG(current_namespace)); + CG(current_namespace) = NULL; + } +} +/* }}} */ - lcname = zend_new_interned_string(zend_str_tolower_dup(name, name_len), name_len + 1, 1 TSRMLS_CC); - hash = str_hash(lcname, name_len); - if (zend_hash_quick_add(&CG(active_class_entry)->function_table, lcname, name_len+1, hash, &op_array, sizeof(zend_op_array), (void **) &CG(active_op_array)) == FAILURE) { - zend_error(E_COMPILE_ERROR, "Cannot redeclare %s::%s()", CG(active_class_entry)->name, name); - } +void zend_do_end_compilation(TSRMLS_D) /* {{{ */ +{ + CG(has_bracketed_namespaces) = 0; + zend_end_namespace(TSRMLS_C); +} +/* }}} */ - zend_stack_push(&CG(context_stack), (void *) &CG(context), sizeof(CG(context))); - zend_init_compiler_context(TSRMLS_C); +/* {{{ zend_dirname + Returns directory name component of path */ +ZEND_API size_t zend_dirname(char *path, size_t len) +{ + register char *end = path + len - 1; + unsigned int len_adjust = 0; - if (fn_flags & ZEND_ACC_ABSTRACT) { - CG(active_class_entry)->ce_flags |= ZEND_ACC_IMPLICIT_ABSTRACT_CLASS; +#ifdef PHP_WIN32 + /* Note that on Win32 CWD is per drive (heritage from CP/M). + * This means dirname("c:foo") maps to "c:." or "c:" - which means CWD on C: drive. + */ + if ((2 <= len) && isalpha((int)((unsigned char *)path)[0]) && (':' == path[1])) { + /* Skip over the drive spec (if any) so as not to change */ + path += 2; + len_adjust += 2; + if (2 == len) { + /* Return "c:" on Win32 for dirname("c:"). + * It would be more consistent to return "c:." + * but that would require making the string *longer*. + */ + return len; } - - if (!(fn_flags & ZEND_ACC_PPP_MASK)) { - fn_flags |= ZEND_ACC_PUBLIC; + } +#elif defined(NETWARE) + /* + * Find the first occurrence of : from the left + * move the path pointer to the position just after : + * increment the len_adjust to the length of path till colon character(inclusive) + * If there is no character beyond : simple return len + */ + char *colonpos = NULL; + colonpos = strchr(path, ':'); + if (colonpos != NULL) { + len_adjust = ((colonpos - path) + 1); + path += len_adjust; + if (len_adjust == len) { + return len; } + } +#endif - if (CG(active_class_entry)->ce_flags & ZEND_ACC_INTERFACE) { - if ((name_len == sizeof(ZEND_CALL_FUNC_NAME)-1) && (!memcmp(lcname, ZEND_CALL_FUNC_NAME, sizeof(ZEND_CALL_FUNC_NAME)-1))) { - if (fn_flags & ((ZEND_ACC_PPP_MASK | ZEND_ACC_STATIC) ^ ZEND_ACC_PUBLIC)) { - zend_error(E_WARNING, "The magic method __call() must have public visibility and cannot be static"); - } - } else if ((name_len == sizeof(ZEND_CALLSTATIC_FUNC_NAME)-1) && (!memcmp(lcname, ZEND_CALLSTATIC_FUNC_NAME, sizeof(ZEND_CALLSTATIC_FUNC_NAME)-1))) { - if ((fn_flags & (ZEND_ACC_PPP_MASK ^ ZEND_ACC_PUBLIC)) || (fn_flags & ZEND_ACC_STATIC) == 0) { - zend_error(E_WARNING, "The magic method __callStatic() must have public visibility and be static"); - } - } else if ((name_len == sizeof(ZEND_GET_FUNC_NAME)-1) && (!memcmp(lcname, ZEND_GET_FUNC_NAME, sizeof(ZEND_GET_FUNC_NAME)-1))) { - if (fn_flags & ((ZEND_ACC_PPP_MASK | ZEND_ACC_STATIC) ^ ZEND_ACC_PUBLIC)) { - zend_error(E_WARNING, "The magic method __get() must have public visibility and cannot be static"); - } - } else if ((name_len == sizeof(ZEND_SET_FUNC_NAME)-1) && (!memcmp(lcname, ZEND_SET_FUNC_NAME, sizeof(ZEND_SET_FUNC_NAME)-1))) { - if (fn_flags & ((ZEND_ACC_PPP_MASK | ZEND_ACC_STATIC) ^ ZEND_ACC_PUBLIC)) { - zend_error(E_WARNING, "The magic method __set() must have public visibility and cannot be static"); - } - } else if ((name_len == sizeof(ZEND_UNSET_FUNC_NAME)-1) && (!memcmp(lcname, ZEND_UNSET_FUNC_NAME, sizeof(ZEND_UNSET_FUNC_NAME)-1))) { - if (fn_flags & ((ZEND_ACC_PPP_MASK | ZEND_ACC_STATIC) ^ ZEND_ACC_PUBLIC)) { - zend_error(E_WARNING, "The magic method __unset() must have public visibility and cannot be static"); - } - } else if ((name_len == sizeof(ZEND_ISSET_FUNC_NAME)-1) && (!memcmp(lcname, ZEND_ISSET_FUNC_NAME, sizeof(ZEND_ISSET_FUNC_NAME)-1))) { - if (fn_flags & ((ZEND_ACC_PPP_MASK | ZEND_ACC_STATIC) ^ ZEND_ACC_PUBLIC)) { - zend_error(E_WARNING, "The magic method __isset() must have public visibility and cannot be static"); - } - } else if ((name_len == sizeof(ZEND_TOSTRING_FUNC_NAME)-1) && (!memcmp(lcname, ZEND_TOSTRING_FUNC_NAME, sizeof(ZEND_TOSTRING_FUNC_NAME)-1))) { - if (fn_flags & ((ZEND_ACC_PPP_MASK | ZEND_ACC_STATIC) ^ ZEND_ACC_PUBLIC)) { - zend_error(E_WARNING, "The magic method __toString() must have public visibility and cannot be static"); - } - } else if ((name_len == sizeof(ZEND_INVOKE_FUNC_NAME)-1) && (!memcmp(lcname, ZEND_INVOKE_FUNC_NAME, sizeof(ZEND_INVOKE_FUNC_NAME)-1))) { - if (fn_flags & ((ZEND_ACC_PPP_MASK | ZEND_ACC_STATIC) ^ ZEND_ACC_PUBLIC)) { - zend_error(E_WARNING, "The magic method __invoke() must have public visibility and cannot be static"); - } - } - } else { - char *class_lcname; - - class_lcname = do_alloca(CG(active_class_entry)->name_length + 1, use_heap); - zend_str_tolower_copy(class_lcname, CG(active_class_entry)->name, CG(active_class_entry)->name_length); - /* Improve after RC: cache the lowercase class name */ - - if ((CG(active_class_entry)->name_length == name_len) && ((CG(active_class_entry)->ce_flags & ZEND_ACC_TRAIT) != ZEND_ACC_TRAIT) && (!memcmp(class_lcname, lcname, name_len))) { - if (!CG(active_class_entry)->constructor) { - CG(active_class_entry)->constructor = (zend_function *) CG(active_op_array); - } - } else if ((name_len == sizeof(ZEND_CONSTRUCTOR_FUNC_NAME)-1) && (!memcmp(lcname, ZEND_CONSTRUCTOR_FUNC_NAME, sizeof(ZEND_CONSTRUCTOR_FUNC_NAME)))) { - if (CG(active_class_entry)->constructor) { - zend_error(E_STRICT, "Redefining already defined constructor for class %s", CG(active_class_entry)->name); - } - CG(active_class_entry)->constructor = (zend_function *) CG(active_op_array); - } else if ((name_len == sizeof(ZEND_DESTRUCTOR_FUNC_NAME)-1) && (!memcmp(lcname, ZEND_DESTRUCTOR_FUNC_NAME, sizeof(ZEND_DESTRUCTOR_FUNC_NAME)-1))) { - CG(active_class_entry)->destructor = (zend_function *) CG(active_op_array); - } else if ((name_len == sizeof(ZEND_CLONE_FUNC_NAME)-1) && (!memcmp(lcname, ZEND_CLONE_FUNC_NAME, sizeof(ZEND_CLONE_FUNC_NAME)-1))) { - CG(active_class_entry)->clone = (zend_function *) CG(active_op_array); - } else if ((name_len == sizeof(ZEND_CALL_FUNC_NAME)-1) && (!memcmp(lcname, ZEND_CALL_FUNC_NAME, sizeof(ZEND_CALL_FUNC_NAME)-1))) { - if (fn_flags & ((ZEND_ACC_PPP_MASK | ZEND_ACC_STATIC) ^ ZEND_ACC_PUBLIC)) { - zend_error(E_WARNING, "The magic method __call() must have public visibility and cannot be static"); - } - CG(active_class_entry)->__call = (zend_function *) CG(active_op_array); - } else if ((name_len == sizeof(ZEND_CALLSTATIC_FUNC_NAME)-1) && (!memcmp(lcname, ZEND_CALLSTATIC_FUNC_NAME, sizeof(ZEND_CALLSTATIC_FUNC_NAME)-1))) { - if ((fn_flags & (ZEND_ACC_PPP_MASK ^ ZEND_ACC_PUBLIC)) || (fn_flags & ZEND_ACC_STATIC) == 0) { - zend_error(E_WARNING, "The magic method __callStatic() must have public visibility and be static"); - } - CG(active_class_entry)->__callstatic = (zend_function *) CG(active_op_array); - } else if ((name_len == sizeof(ZEND_GET_FUNC_NAME)-1) && (!memcmp(lcname, ZEND_GET_FUNC_NAME, sizeof(ZEND_GET_FUNC_NAME)-1))) { - if (fn_flags & ((ZEND_ACC_PPP_MASK | ZEND_ACC_STATIC) ^ ZEND_ACC_PUBLIC)) { - zend_error(E_WARNING, "The magic method __get() must have public visibility and cannot be static"); - } - CG(active_class_entry)->__get = (zend_function *) CG(active_op_array); - } else if ((name_len == sizeof(ZEND_SET_FUNC_NAME)-1) && (!memcmp(lcname, ZEND_SET_FUNC_NAME, sizeof(ZEND_SET_FUNC_NAME)-1))) { - if (fn_flags & ((ZEND_ACC_PPP_MASK | ZEND_ACC_STATIC) ^ ZEND_ACC_PUBLIC)) { - zend_error(E_WARNING, "The magic method __set() must have public visibility and cannot be static"); - } - CG(active_class_entry)->__set = (zend_function *) CG(active_op_array); - } else if ((name_len == sizeof(ZEND_UNSET_FUNC_NAME)-1) && (!memcmp(lcname, ZEND_UNSET_FUNC_NAME, sizeof(ZEND_UNSET_FUNC_NAME)-1))) { - if (fn_flags & ((ZEND_ACC_PPP_MASK | ZEND_ACC_STATIC) ^ ZEND_ACC_PUBLIC)) { - zend_error(E_WARNING, "The magic method __unset() must have public visibility and cannot be static"); - } - CG(active_class_entry)->__unset = (zend_function *) CG(active_op_array); - } else if ((name_len == sizeof(ZEND_ISSET_FUNC_NAME)-1) && (!memcmp(lcname, ZEND_ISSET_FUNC_NAME, sizeof(ZEND_ISSET_FUNC_NAME)-1))) { - if (fn_flags & ((ZEND_ACC_PPP_MASK | ZEND_ACC_STATIC) ^ ZEND_ACC_PUBLIC)) { - zend_error(E_WARNING, "The magic method __isset() must have public visibility and cannot be static"); - } - CG(active_class_entry)->__isset = (zend_function *) CG(active_op_array); - } else if ((name_len == sizeof(ZEND_TOSTRING_FUNC_NAME)-1) && (!memcmp(lcname, ZEND_TOSTRING_FUNC_NAME, sizeof(ZEND_TOSTRING_FUNC_NAME)-1))) { - if (fn_flags & ((ZEND_ACC_PPP_MASK | ZEND_ACC_STATIC) ^ ZEND_ACC_PUBLIC)) { - zend_error(E_WARNING, "The magic method __toString() must have public visibility and cannot be static"); - } - CG(active_class_entry)->__tostring = (zend_function *) CG(active_op_array); - } else if ((name_len == sizeof(ZEND_INVOKE_FUNC_NAME)-1) && (!memcmp(lcname, ZEND_INVOKE_FUNC_NAME, sizeof(ZEND_INVOKE_FUNC_NAME)-1))) { - if (fn_flags & ((ZEND_ACC_PPP_MASK | ZEND_ACC_STATIC) ^ ZEND_ACC_PUBLIC)) { - zend_error(E_WARNING, "The magic method __invoke() must have public visibility and cannot be static"); - } - } else if (!(fn_flags & ZEND_ACC_STATIC)) { - CG(active_op_array)->fn_flags |= ZEND_ACC_ALLOW_STATIC; - } - free_alloca(class_lcname, use_heap); - } + if (len == 0) { + /* Illegal use of this function */ + return 0; + } - str_efree(lcname); - } else { - zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); - zval key; + /* Strip trailing slashes */ + while (end >= path && IS_SLASH_P(end)) { + end--; + } + if (end < path) { + /* The path only contained slashes */ + path[0] = DEFAULT_SLASH; + path[1] = '\0'; + return 1 + len_adjust; + } - if (CG(current_namespace)) { - /* Prefix function name with current namespace name */ - znode tmp; - - tmp.u.constant = *CG(current_namespace); - zval_copy_ctor(&tmp.u.constant); - zend_do_build_namespace_name(&tmp, &tmp, function_name TSRMLS_CC); - op_array.function_name = Z_STRVAL(tmp.u.constant); - name_len = Z_STRLEN(tmp.u.constant); - lcname = zend_str_tolower_dup(Z_STRVAL(tmp.u.constant), name_len); + /* Strip filename */ + while (end >= path && !IS_SLASH_P(end)) { + end--; + } + if (end < path) { + /* No slash found, therefore return '.' */ +#ifdef NETWARE + if (len_adjust == 0) { + path[0] = '.'; + path[1] = '\0'; + return 1; /* only one character */ } else { - lcname = zend_str_tolower_dup(name, name_len); + path[0] = '\0'; + return len_adjust; } - - opline->opcode = ZEND_DECLARE_FUNCTION; - opline->op1_type = IS_CONST; - build_runtime_defined_function_key(&key, lcname, name_len TSRMLS_CC); - opline->op1.constant = zend_add_literal(CG(active_op_array), &key TSRMLS_CC); - Z_HASH_P(&CONSTANT(opline->op1.constant)) = zend_hash_func(Z_STRVAL(CONSTANT(opline->op1.constant)), Z_STRLEN(CONSTANT(opline->op1.constant))); - opline->op2_type = IS_CONST; - LITERAL_STRINGL(opline->op2, lcname, name_len, 0); - CALCULATE_LITERAL_HASH(opline->op2.constant); - opline->extended_value = ZEND_DECLARE_FUNCTION; - zend_hash_quick_update(CG(function_table), Z_STRVAL(key), Z_STRLEN(key), Z_HASH_P(&CONSTANT(opline->op1.constant)), &op_array, sizeof(zend_op_array), (void **) &CG(active_op_array)); - zend_stack_push(&CG(context_stack), (void *) &CG(context), sizeof(CG(context))); - zend_init_compiler_context(TSRMLS_C); - } - - if (CG(compiler_options) & ZEND_COMPILE_EXTENDED_INFO) { - zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); - - opline->opcode = ZEND_EXT_NOP; - opline->lineno = function_begin_line; - SET_UNUSED(opline->op1); - SET_UNUSED(opline->op2); +#else + path[0] = '.'; + path[1] = '\0'; + return 1 + len_adjust; +#endif } - { - /* Push a separator to the switch stack */ - zend_switch_entry switch_entry; - - switch_entry.cond.op_type = IS_UNUSED; - switch_entry.default_case = 0; - switch_entry.control_var = 0; - - zend_stack_push(&CG(switch_cond_stack), (void *) &switch_entry, sizeof(switch_entry)); + /* Strip slashes which came before the file name */ + while (end >= path && IS_SLASH_P(end)) { + end--; } - - { - /* Push a separator to the foreach stack */ - zend_op dummy_opline; - - dummy_opline.result_type = IS_UNUSED; - - zend_stack_push(&CG(foreach_copy_stack), (void *) &dummy_opline, sizeof(zend_op)); + if (end < path) { + path[0] = DEFAULT_SLASH; + path[1] = '\0'; + return 1 + len_adjust; } + *(end+1) = '\0'; - if (CG(doc_comment)) { - CG(active_op_array)->doc_comment = CG(doc_comment); - CG(active_op_array)->doc_comment_len = CG(doc_comment_len); - CG(doc_comment) = NULL; - CG(doc_comment_len) = 0; - } + return (size_t)(end + 1 - path) + len_adjust; } /* }}} */ -void zend_do_begin_lambda_function_declaration(znode *result, znode *function_token, int return_reference, int is_static TSRMLS_DC) /* {{{ */ +static inline zend_bool zend_string_equals_str_ci(zend_string *str1, zend_string *str2) /* {{{ */ { - znode function_name; - zend_op_array *current_op_array = CG(active_op_array); - int current_op_number = get_next_op_number(CG(active_op_array)); - zend_op *current_op; - - function_name.op_type = IS_CONST; - ZVAL_STRINGL(&function_name.u.constant, "{closure}", sizeof("{closure}")-1, 1); - - zend_do_begin_function_declaration(function_token, &function_name, 0, return_reference, NULL TSRMLS_CC); - - result->op_type = IS_TMP_VAR; - result->u.op.var = get_temporary_variable(current_op_array); + return str1->len == str2->len + && !zend_binary_strcasecmp(str1->val, str1->len, str2->val, str2->len); +} +/* }}} */ - current_op = ¤t_op_array->opcodes[current_op_number]; - current_op->opcode = ZEND_DECLARE_LAMBDA_FUNCTION; - zend_del_literal(current_op_array, current_op->op2.constant); - SET_UNUSED(current_op->op2); - SET_NODE(current_op->result, result); - if (is_static) { - CG(active_op_array)->fn_flags |= ZEND_ACC_STATIC; +static void zend_adjust_for_fetch_type(zend_op *opline, uint32_t type) /* {{{ */ +{ + switch (type & BP_VAR_MASK) { + case BP_VAR_R: + return; + case BP_VAR_W: + opline->opcode += 3; + return; + case BP_VAR_REF: + opline->opcode += 3; + opline->extended_value |= ZEND_FETCH_MAKE_REF; + return; + case BP_VAR_RW: + opline->opcode += 6; + return; + case BP_VAR_IS: + opline->opcode += 9; + return; + case BP_VAR_FUNC_ARG: + opline->opcode += 12; + opline->extended_value |= type >> BP_VAR_SHIFT; + return; + case BP_VAR_UNSET: + opline->opcode += 15; + return; + EMPTY_SWITCH_DEFAULT_CASE() } - CG(active_op_array)->fn_flags |= ZEND_ACC_CLOSURE; } /* }}} */ -void zend_do_handle_exception(TSRMLS_D) /* {{{ */ +static inline void zend_make_var_result(znode *result, zend_op *opline TSRMLS_DC) /* {{{ */ { - zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); - - opline->opcode = ZEND_HANDLE_EXCEPTION; - SET_UNUSED(opline->op1); - SET_UNUSED(opline->op2); + opline->result_type = IS_VAR; + opline->result.var = get_temporary_variable(CG(active_op_array)); + GET_NODE(result, opline->result); } /* }}} */ -void zend_do_end_function_declaration(const znode *function_token TSRMLS_DC) /* {{{ */ +static inline void zend_make_tmp_result(znode *result, zend_op *opline TSRMLS_DC) /* {{{ */ { - char lcname[16]; - int name_len; - - zend_do_extended_info(TSRMLS_C); - zend_do_return(NULL, 0 TSRMLS_CC); + opline->result_type = IS_TMP_VAR; + opline->result.var = get_temporary_variable(CG(active_op_array)); + GET_NODE(result, opline->result); +} +/* }}} */ - pass_two(CG(active_op_array) TSRMLS_CC); - zend_release_labels(0 TSRMLS_CC); +static zend_op *zend_emit_op(znode *result, zend_uchar opcode, znode *op1, znode *op2 TSRMLS_DC) /* {{{ */ +{ + zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); + opline->opcode = opcode; - if (CG(active_class_entry)) { - zend_check_magic_method_implementation(CG(active_class_entry), (zend_function*)CG(active_op_array), E_COMPILE_ERROR TSRMLS_CC); + if (op1 == NULL) { + SET_UNUSED(opline->op1); } else { - /* we don't care if the function name is longer, in fact lowercasing only - * the beginning of the name speeds up the check process */ - name_len = strlen(CG(active_op_array)->function_name); - zend_str_tolower_copy(lcname, CG(active_op_array)->function_name, MIN(name_len, sizeof(lcname)-1)); - lcname[sizeof(lcname)-1] = '\0'; /* zend_str_tolower_copy won't necessarily set the zero byte */ - if (name_len == sizeof(ZEND_AUTOLOAD_FUNC_NAME) - 1 && !memcmp(lcname, ZEND_AUTOLOAD_FUNC_NAME, sizeof(ZEND_AUTOLOAD_FUNC_NAME)) && CG(active_op_array)->num_args != 1) { - zend_error(E_COMPILE_ERROR, "%s() must take exactly 1 argument", ZEND_AUTOLOAD_FUNC_NAME); - } + SET_NODE(opline->op1, op1); } - CG(active_op_array)->line_end = zend_get_compiled_lineno(TSRMLS_C); - CG(active_op_array) = function_token->u.op_array; - + if (op2 == NULL) { + SET_UNUSED(opline->op2); + } else { + SET_NODE(opline->op2, op2); + } - /* Pop the switch and foreach separators */ - zend_stack_del_top(&CG(switch_cond_stack)); - zend_stack_del_top(&CG(foreach_copy_stack)); + if (result) { + zend_make_var_result(result, opline TSRMLS_CC); + } + return opline; } /* }}} */ -void zend_do_receive_param(zend_uchar op, znode *varname, const znode *initialization, znode *class_type, zend_uchar pass_by_reference, zend_bool is_variadic TSRMLS_DC) /* {{{ */ +static zend_op *zend_emit_op_tmp(znode *result, zend_uchar opcode, znode *op1, znode *op2 TSRMLS_DC) /* {{{ */ { - zend_op *opline; - zend_arg_info *cur_arg_info; - znode var; + zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); + opline->opcode = opcode; - if (zend_is_auto_global(Z_STRVAL(varname->u.constant), Z_STRLEN(varname->u.constant) TSRMLS_CC)) { - zend_error(E_COMPILE_ERROR, "Cannot re-assign auto-global variable %s", Z_STRVAL(varname->u.constant)); + if (op1 == NULL) { + SET_UNUSED(opline->op1); } else { - var.op_type = IS_CV; - var.u.op.var = lookup_cv(CG(active_op_array), Z_STRVAL(varname->u.constant), Z_STRLEN(varname->u.constant), 0 TSRMLS_CC); - Z_STRVAL(varname->u.constant) = (char*)CG(active_op_array)->vars[var.u.op.var].name; - var.EA = 0; - if (CG(active_op_array)->vars[var.u.op.var].hash_value == THIS_HASHVAL && - Z_STRLEN(varname->u.constant) == sizeof("this")-1 && - !memcmp(Z_STRVAL(varname->u.constant), "this", sizeof("this")-1)) { - if (CG(active_op_array)->scope && - (CG(active_op_array)->fn_flags & ZEND_ACC_STATIC) == 0) { - zend_error(E_COMPILE_ERROR, "Cannot re-assign $this"); - } - CG(active_op_array)->this_var = var.u.op.var; - } + SET_NODE(opline->op1, op1); } - if (CG(active_op_array)->fn_flags & ZEND_ACC_VARIADIC) { - zend_error(E_COMPILE_ERROR, "Only the last parameter can be variadic"); + if (op2 == NULL) { + SET_UNUSED(opline->op2); + } else { + SET_NODE(opline->op2, op2); } - if (is_variadic) { - if (op == ZEND_RECV_INIT) { - zend_error(E_COMPILE_ERROR, "Variadic parameter cannot have a default value"); - } - - op = ZEND_RECV_VARIADIC; - CG(active_op_array)->fn_flags |= ZEND_ACC_VARIADIC; + if (result) { + zend_make_tmp_result(result, opline TSRMLS_CC); } - opline = get_next_op(CG(active_op_array) TSRMLS_CC); - CG(active_op_array)->num_args++; - opline->opcode = op; - SET_NODE(opline->result, &var); - opline->op1_type = IS_UNUSED; - opline->op1.num = CG(active_op_array)->num_args; - if (op == ZEND_RECV_INIT) { - SET_NODE(opline->op2, initialization); - } else { - SET_UNUSED(opline->op2); - if (!is_variadic) { - CG(active_op_array)->required_num_args = CG(active_op_array)->num_args; - } - } - CG(active_op_array)->arg_info = erealloc(CG(active_op_array)->arg_info, sizeof(zend_arg_info)*(CG(active_op_array)->num_args)); - cur_arg_info = &CG(active_op_array)->arg_info[CG(active_op_array)->num_args-1]; - cur_arg_info->name = zend_new_interned_string(estrndup(Z_STRVAL(varname->u.constant), Z_STRLEN(varname->u.constant)), Z_STRLEN(varname->u.constant) + 1, 1 TSRMLS_CC); - cur_arg_info->name_len = Z_STRLEN(varname->u.constant); - cur_arg_info->type_hint = 0; - cur_arg_info->pass_by_reference = pass_by_reference; - cur_arg_info->allow_null = 1; - cur_arg_info->is_variadic = is_variadic; - cur_arg_info->class_name = NULL; - cur_arg_info->class_name_len = 0; - - if (class_type->op_type != IS_UNUSED) { - cur_arg_info->allow_null = 0; - - if (class_type->u.constant.type != IS_NULL) { - if (class_type->u.constant.type == IS_ARRAY) { - cur_arg_info->type_hint = IS_ARRAY; - if (op == ZEND_RECV_INIT) { - if (Z_TYPE(initialization->u.constant) == IS_NULL || (Z_TYPE(initialization->u.constant) == IS_CONSTANT && !strcasecmp(Z_STRVAL(initialization->u.constant), "NULL"))) { - cur_arg_info->allow_null = 1; - } else if (Z_TYPE(initialization->u.constant) != IS_ARRAY && Z_TYPE(initialization->u.constant) != IS_CONSTANT_ARRAY) { - zend_error(E_COMPILE_ERROR, "Default value for parameters with array type hint can only be an array or NULL"); - } - } - } else if (class_type->u.constant.type == IS_CALLABLE) { - cur_arg_info->type_hint = IS_CALLABLE; - if (op == ZEND_RECV_INIT) { - if (Z_TYPE(initialization->u.constant) == IS_NULL || (Z_TYPE(initialization->u.constant) == IS_CONSTANT && !strcasecmp(Z_STRVAL(initialization->u.constant), "NULL"))) { - cur_arg_info->allow_null = 1; - } else { - zend_error(E_COMPILE_ERROR, "Default value for parameters with callable type hint can only be NULL"); - } - } - } else { - cur_arg_info->type_hint = IS_OBJECT; - if (ZEND_FETCH_CLASS_DEFAULT == zend_get_class_fetch_type(Z_STRVAL(class_type->u.constant), Z_STRLEN(class_type->u.constant))) { - zend_resolve_class_name(class_type TSRMLS_CC); - } - Z_STRVAL(class_type->u.constant) = (char*)zend_new_interned_string(Z_STRVAL(class_type->u.constant), Z_STRLEN(class_type->u.constant) + 1, 1 TSRMLS_CC); - cur_arg_info->class_name = Z_STRVAL(class_type->u.constant); - cur_arg_info->class_name_len = Z_STRLEN(class_type->u.constant); - if (op == ZEND_RECV_INIT) { - if (Z_TYPE(initialization->u.constant) == IS_NULL || (Z_TYPE(initialization->u.constant) == IS_CONSTANT && !strcasecmp(Z_STRVAL(initialization->u.constant), "NULL"))) { - cur_arg_info->allow_null = 1; - } else { - zend_error(E_COMPILE_ERROR, "Default value for parameters with a class type hint can only be NULL"); - } - } - } - } - } + return opline; } /* }}} */ -int zend_do_begin_function_call(znode *function_name, zend_bool check_namespace TSRMLS_DC) /* {{{ */ +static void zend_emit_tick(TSRMLS_D) /* {{{ */ { - zend_function *function; - char *lcname; - char *is_compound = memchr(Z_STRVAL(function_name->u.constant), '\\', Z_STRLEN(function_name->u.constant)); + zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); - zend_resolve_non_class_name(function_name, check_namespace TSRMLS_CC); + opline->opcode = ZEND_TICKS; + SET_UNUSED(opline->op1); + SET_UNUSED(opline->op2); + opline->extended_value = Z_LVAL(CG(declarables).ticks); +} +/* }}} */ - if (check_namespace && CG(current_namespace) && !is_compound) { - /* We assume we call function from the current namespace - if it is not prefixed. */ +static inline zend_op *zend_emit_op_data(znode *value TSRMLS_DC) /* {{{ */ +{ + return zend_emit_op(NULL, ZEND_OP_DATA, value, NULL TSRMLS_CC); +} +/* }}} */ - /* In run-time PHP will check for function with full name and - internal function with short name */ - zend_do_begin_dynamic_function_call(function_name, 1 TSRMLS_CC); - return 1; - } +static inline uint32_t zend_emit_jump(uint32_t opnum_target TSRMLS_DC) /* {{{ */ +{ + uint32_t opnum = get_next_op_number(CG(active_op_array)); + zend_op *opline = zend_emit_op(NULL, ZEND_JMP, NULL, NULL TSRMLS_CC); + opline->op1.opline_num = opnum_target; + return opnum; +} +/* }}} */ - lcname = zend_str_tolower_dup(Z_STRVAL(function_name->u.constant), Z_STRLEN(function_name->u.constant)); - if ((zend_hash_find(CG(function_table), lcname, Z_STRLEN(function_name->u.constant)+1, (void **) &function)==FAILURE) || - ((CG(compiler_options) & ZEND_COMPILE_IGNORE_INTERNAL_FUNCTIONS) && - (function->type == ZEND_INTERNAL_FUNCTION))) { - zend_do_begin_dynamic_function_call(function_name, 0 TSRMLS_CC); - efree(lcname); - return 1; /* Dynamic */ - } - efree(Z_STRVAL(function_name->u.constant)); - Z_STRVAL(function_name->u.constant) = lcname; +static inline uint32_t zend_emit_cond_jump(zend_uchar opcode, znode *cond, uint32_t opnum_target TSRMLS_DC) /* {{{ */ +{ + uint32_t opnum = get_next_op_number(CG(active_op_array)); + zend_op *opline = zend_emit_op(NULL, opcode, cond, NULL TSRMLS_CC); + opline->op2.opline_num = opnum_target; + return opnum; +} +/* }}} */ - zend_stack_push(&CG(function_call_stack), (void *) &function, sizeof(zend_function *)); - if (CG(context).nested_calls + 1 > CG(active_op_array)->nested_calls) { - CG(active_op_array)->nested_calls = CG(context).nested_calls + 1; +static inline void zend_update_jump_target(uint32_t opnum_jump, uint32_t opnum_target TSRMLS_DC) /* {{{ */ +{ + zend_op *opline = &CG(active_op_array)->opcodes[opnum_jump]; + switch (opline->opcode) { + case ZEND_JMP: + opline->op1.opline_num = opnum_target; + break; + case ZEND_JMPZ: + case ZEND_JMPNZ: + case ZEND_JMPZ_EX: + case ZEND_JMPNZ_EX: + opline->op2.opline_num = opnum_target; + break; + EMPTY_SWITCH_DEFAULT_CASE() } - zend_do_extended_fcall_begin(TSRMLS_C); - return 0; } /* }}} */ -void zend_do_begin_method_call(znode *left_bracket TSRMLS_DC) /* {{{ */ +static inline void zend_update_jump_target_to_next(uint32_t opnum_jump TSRMLS_DC) /* {{{ */ { - zend_op *last_op; - int last_op_number; - unsigned char *ptr = NULL; - - zend_do_end_variable_parse(left_bracket, BP_VAR_R, 0 TSRMLS_CC); - zend_do_begin_variable_parse(TSRMLS_C); - - last_op_number = get_next_op_number(CG(active_op_array))-1; - last_op = &CG(active_op_array)->opcodes[last_op_number]; + zend_update_jump_target(opnum_jump, get_next_op_number(CG(active_op_array)) TSRMLS_CC); +} +/* }}} */ - if ((last_op->op2_type == IS_CONST) && (Z_TYPE(CONSTANT(last_op->op2.constant)) == IS_STRING) && (Z_STRLEN(CONSTANT(last_op->op2.constant)) == sizeof(ZEND_CLONE_FUNC_NAME)-1) - && !zend_binary_strcasecmp(Z_STRVAL(CONSTANT(last_op->op2.constant)), Z_STRLEN(CONSTANT(last_op->op2.constant)), ZEND_CLONE_FUNC_NAME, sizeof(ZEND_CLONE_FUNC_NAME)-1)) { - zend_error(E_COMPILE_ERROR, "Cannot call __clone() method on objects - use 'clone $obj' instead"); +static inline zend_op *zend_delayed_emit_op(znode *result, zend_uchar opcode, znode *op1, znode *op2 TSRMLS_DC) /* {{{ */ +{ + zend_op tmp_opline; + init_op(&tmp_opline TSRMLS_CC); + tmp_opline.opcode = opcode; + SET_NODE(tmp_opline.op1, op1); + SET_NODE(tmp_opline.op2, op2); + if (result) { + zend_make_var_result(result, &tmp_opline TSRMLS_CC); } - if (last_op->opcode == ZEND_FETCH_OBJ_R) { - if (last_op->op2_type == IS_CONST) { - zval name; - name = CONSTANT(last_op->op2.constant); - if (Z_TYPE(name) != IS_STRING) { - zend_error(E_COMPILE_ERROR, "Method name must be a string"); - } - Z_STRVAL(name) = str_estrndup(Z_STRVAL(name), Z_STRLEN(name)); - FREE_POLYMORPHIC_CACHE_SLOT(last_op->op2.constant); - last_op->op2.constant = - zend_add_func_name_literal(CG(active_op_array), &name TSRMLS_CC); - GET_POLYMORPHIC_CACHE_SLOT(last_op->op2.constant); - } - last_op->opcode = ZEND_INIT_METHOD_CALL; - last_op->result_type = IS_UNUSED; - last_op->result.num = CG(context).nested_calls; - Z_LVAL(left_bracket->u.constant) = ZEND_INIT_FCALL_BY_NAME; - } else { - zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); - opline->opcode = ZEND_INIT_FCALL_BY_NAME; - opline->result.num = CG(context).nested_calls; - SET_UNUSED(opline->op1); - if (left_bracket->op_type == IS_CONST) { - opline->op2_type = IS_CONST; - opline->op2.constant = zend_add_func_name_literal(CG(active_op_array), &left_bracket->u.constant TSRMLS_CC); - GET_CACHE_SLOT(opline->op2.constant); - } else { - SET_NODE(opline->op2, left_bracket); - } - } + zend_stack_push(&CG(delayed_oplines_stack), &tmp_opline); + return zend_stack_top(&CG(delayed_oplines_stack)); +} +/* }}} */ - zend_stack_push(&CG(function_call_stack), (void *) &ptr, sizeof(zend_function *)); - if (++CG(context).nested_calls > CG(active_op_array)->nested_calls) { - CG(active_op_array)->nested_calls = CG(context).nested_calls; - } - zend_do_extended_fcall_begin(TSRMLS_C); +static inline uint32_t zend_delayed_compile_begin(TSRMLS_D) /* {{{ */ +{ + return zend_stack_count(&CG(delayed_oplines_stack)); } /* }}} */ -void zend_do_clone(znode *result, const znode *expr TSRMLS_DC) /* {{{ */ +static zend_op *zend_delayed_compile_end(uint32_t offset TSRMLS_DC) /* {{{ */ { - zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); + zend_op *opline, *oplines = zend_stack_base(&CG(delayed_oplines_stack)); + uint32_t i, count = zend_stack_count(&CG(delayed_oplines_stack)); - opline->opcode = ZEND_CLONE; - SET_NODE(opline->op1, expr); - SET_UNUSED(opline->op2); - opline->result_type = IS_VAR; - opline->result.var = get_temporary_variable(CG(active_op_array)); - GET_NODE(result, opline->result); + ZEND_ASSERT(count > offset); + for (i = offset; i < count; ++i) { + opline = get_next_op(CG(active_op_array) TSRMLS_CC); + memcpy(opline, &oplines[i], sizeof(zend_op)); + } + CG(delayed_oplines_stack).top = offset; + return opline; } /* }}} */ -void zend_do_begin_dynamic_function_call(znode *function_name, int ns_call TSRMLS_DC) /* {{{ */ +void zend_emit_final_return(zval *zv TSRMLS_DC) /* {{{ */ { - unsigned char *ptr = NULL; - zend_op *opline; + znode zn; + zend_bool returns_reference = (CG(active_op_array)->fn_flags & ZEND_ACC_RETURN_REFERENCE) != 0; - opline = get_next_op(CG(active_op_array) TSRMLS_CC); - if (ns_call) { - /* In run-time PHP will check for function with full name and - internal function with short name */ - opline->opcode = ZEND_INIT_NS_FCALL_BY_NAME; - opline->result.num = CG(context).nested_calls; - SET_UNUSED(opline->op1); - opline->op2_type = IS_CONST; - opline->op2.constant = zend_add_ns_func_name_literal(CG(active_op_array), &function_name->u.constant TSRMLS_CC); - GET_CACHE_SLOT(opline->op2.constant); + zn.op_type = IS_CONST; + if (zv) { + ZVAL_COPY_VALUE(&zn.u.constant, zv); } else { - opline->opcode = ZEND_INIT_FCALL_BY_NAME; - opline->result.num = CG(context).nested_calls; - SET_UNUSED(opline->op1); - if (function_name->op_type == IS_CONST) { - opline->op2_type = IS_CONST; - opline->op2.constant = zend_add_func_name_literal(CG(active_op_array), &function_name->u.constant TSRMLS_CC); - GET_CACHE_SLOT(opline->op2.constant); - } else { - SET_NODE(opline->op2, function_name); - } + ZVAL_NULL(&zn.u.constant); } - zend_stack_push(&CG(function_call_stack), (void *) &ptr, sizeof(zend_function *)); - if (++CG(context).nested_calls > CG(active_op_array)->nested_calls) { - CG(active_op_array)->nested_calls = CG(context).nested_calls; - } - zend_do_extended_fcall_begin(TSRMLS_C); + zend_emit_op(NULL, returns_reference ? ZEND_RETURN_BY_REF : ZEND_RETURN, &zn, NULL TSRMLS_CC); } /* }}} */ -void zend_resolve_non_class_name(znode *element_name, zend_bool check_namespace TSRMLS_DC) /* {{{ */ +static inline zend_bool zend_is_variable(zend_ast *ast) /* {{{ */ { - znode tmp; - int len; - zval **ns; - char *lcname, *compound = memchr(Z_STRVAL(element_name->u.constant), '\\', Z_STRLEN(element_name->u.constant)); + return ast->kind == ZEND_AST_VAR || ast->kind == ZEND_AST_DIM + || ast->kind == ZEND_AST_PROP || ast->kind == ZEND_AST_STATIC_PROP + || ast->kind == ZEND_AST_CALL || ast->kind == ZEND_AST_METHOD_CALL + || ast->kind == ZEND_AST_STATIC_CALL; +} +/* }}} */ - if (Z_STRVAL(element_name->u.constant)[0] == '\\') { - /* name starts with \ so it is known and unambiguos, nothing to do here but shorten it */ - memmove(Z_STRVAL(element_name->u.constant), Z_STRVAL(element_name->u.constant)+1, Z_STRLEN(element_name->u.constant)); - --Z_STRLEN(element_name->u.constant); - return; - } +static inline zend_bool zend_is_call(zend_ast *ast) /* {{{ */ +{ + return ast->kind == ZEND_AST_CALL + || ast->kind == ZEND_AST_METHOD_CALL + || ast->kind == ZEND_AST_STATIC_CALL; +} +/* }}} */ - if(!check_namespace) { - return; - } +static inline zend_bool zend_is_unticked_stmt(zend_ast *ast) /* {{{ */ +{ + return ast->kind == ZEND_AST_STMT_LIST || ast->kind == ZEND_AST_LABEL; +} +/* }}} */ - if (compound && CG(current_import)) { - len = compound - Z_STRVAL(element_name->u.constant); - lcname = zend_str_tolower_dup(Z_STRVAL(element_name->u.constant), len); - /* Check if first part of compound name is an import name */ - if (zend_hash_find(CG(current_import), lcname, len+1, (void**)&ns) == SUCCESS) { - /* Substitute import name */ - tmp.op_type = IS_CONST; - tmp.u.constant = **ns; - zval_copy_ctor(&tmp.u.constant); - len += 1; - Z_STRLEN(element_name->u.constant) -= len; - memmove(Z_STRVAL(element_name->u.constant), Z_STRVAL(element_name->u.constant)+len, Z_STRLEN(element_name->u.constant)+1); - zend_do_build_namespace_name(&tmp, &tmp, element_name TSRMLS_CC); - *element_name = tmp; - efree(lcname); - return; - } - efree(lcname); +static inline zend_bool zend_can_write_to_variable(zend_ast *ast) /* {{{ */ +{ + while (ast->kind == ZEND_AST_DIM || ast->kind == ZEND_AST_PROP) { + ast = ast->child[0]; } - if (CG(current_namespace)) { - tmp = *element_name; - Z_STRLEN(tmp.u.constant) = sizeof("\\")-1 + Z_STRLEN(element_name->u.constant) + Z_STRLEN_P(CG(current_namespace)); - Z_STRVAL(tmp.u.constant) = (char *) emalloc(Z_STRLEN(tmp.u.constant)+1); - memcpy(Z_STRVAL(tmp.u.constant), Z_STRVAL_P(CG(current_namespace)), Z_STRLEN_P(CG(current_namespace))); - memcpy(&(Z_STRVAL(tmp.u.constant)[Z_STRLEN_P(CG(current_namespace))]), "\\", sizeof("\\")-1); - memcpy(&(Z_STRVAL(tmp.u.constant)[Z_STRLEN_P(CG(current_namespace)) + sizeof("\\")-1]), Z_STRVAL(element_name->u.constant), Z_STRLEN(element_name->u.constant)+1); - str_efree(Z_STRVAL(element_name->u.constant)); - *element_name = tmp; - } + return zend_is_variable(ast); } /* }}} */ -void zend_do_resolve_class_name(znode *result, znode *class_name, int is_static TSRMLS_DC) /* {{{ */ +static inline zend_bool zend_is_const_default_class_ref(zend_ast *name_ast) /* {{{ */ { - char *lcname; - int lctype; - znode constant_name; + zend_string *name; - lcname = zend_str_tolower_dup(Z_STRVAL(class_name->u.constant), Z_STRLEN(class_name->u.constant)); - lctype = zend_get_class_fetch_type(lcname, strlen(lcname)); - switch (lctype) { - case ZEND_FETCH_CLASS_SELF: - if (!CG(active_class_entry)) { - zend_error(E_COMPILE_ERROR, "Cannot access self::class when no class scope is active"); - } - zval_dtor(&class_name->u.constant); - class_name->op_type = IS_CONST; - ZVAL_STRINGL(&class_name->u.constant, CG(active_class_entry)->name, CG(active_class_entry)->name_length, 1); - *result = *class_name; - break; - case ZEND_FETCH_CLASS_STATIC: - case ZEND_FETCH_CLASS_PARENT: - if (is_static) { - zend_error(E_COMPILE_ERROR, - "%s::class cannot be used for compile-time class name resolution", - lctype == ZEND_FETCH_CLASS_STATIC ? "static" : "parent" - ); - } - if (!CG(active_class_entry)) { - zend_error(E_COMPILE_ERROR, - "Cannot access %s::class when no class scope is active", - lctype == ZEND_FETCH_CLASS_STATIC ? "static" : "parent" - ); - } - constant_name.op_type = IS_CONST; - ZVAL_STRINGL(&constant_name.u.constant, "class", sizeof("class")-1, 1); - zend_do_fetch_constant(result, class_name, &constant_name, ZEND_RT, 1 TSRMLS_CC); - break; - case ZEND_FETCH_CLASS_DEFAULT: - zend_resolve_class_name(class_name TSRMLS_CC); - *result = *class_name; - break; + if (name_ast->kind != ZEND_AST_ZVAL) { + return 0; } - efree(lcname); + /* Fully qualified names are always default refs */ + if (!name_ast->attr) { + return 1; + } + name = zend_ast_get_str(name_ast); + return ZEND_FETCH_CLASS_DEFAULT == zend_get_class_fetch_type(name); } /* }}} */ -void zend_resolve_class_name(znode *class_name TSRMLS_DC) /* {{{ */ +static inline void zend_handle_numeric_op(znode *node TSRMLS_DC) /* {{{ */ { - char *compound; - char *lcname; - zval **ns; - znode tmp; - int len; + if (node->op_type == IS_CONST && Z_TYPE(node->u.constant) == IS_STRING) { + zend_ulong index; - compound = memchr(Z_STRVAL(class_name->u.constant), '\\', Z_STRLEN(class_name->u.constant)); - if (compound) { - /* This is a compound class name that contains namespace prefix */ - if (Z_STRVAL(class_name->u.constant)[0] == '\\') { - /* The STRING name has "\" prefix */ - Z_STRLEN(class_name->u.constant) -= 1; - memmove(Z_STRVAL(class_name->u.constant), Z_STRVAL(class_name->u.constant)+1, Z_STRLEN(class_name->u.constant)+1); - Z_STRVAL(class_name->u.constant) = erealloc( - Z_STRVAL(class_name->u.constant), - Z_STRLEN(class_name->u.constant) + 1); - - if (ZEND_FETCH_CLASS_DEFAULT != zend_get_class_fetch_type(Z_STRVAL(class_name->u.constant), Z_STRLEN(class_name->u.constant))) { - zend_error(E_COMPILE_ERROR, "'\\%s' is an invalid class name", Z_STRVAL(class_name->u.constant)); - } - } else { - if (CG(current_import)) { - len = compound - Z_STRVAL(class_name->u.constant); - lcname = zend_str_tolower_dup(Z_STRVAL(class_name->u.constant), len); - /* Check if first part of compound name is an import name */ - if (zend_hash_find(CG(current_import), lcname, len+1, (void**)&ns) == SUCCESS) { - /* Substitute import name */ - tmp.op_type = IS_CONST; - tmp.u.constant = **ns; - zval_copy_ctor(&tmp.u.constant); - len += 1; - Z_STRLEN(class_name->u.constant) -= len; - memmove(Z_STRVAL(class_name->u.constant), Z_STRVAL(class_name->u.constant)+len, Z_STRLEN(class_name->u.constant)+1); - zend_do_build_namespace_name(&tmp, &tmp, class_name TSRMLS_CC); - *class_name = tmp; - efree(lcname); - return; - } - efree(lcname); - } - /* Here name is not prefixed with \ and not imported */ - if (CG(current_namespace)) { - tmp.op_type = IS_CONST; - tmp.u.constant = *CG(current_namespace); - zval_copy_ctor(&tmp.u.constant); - zend_do_build_namespace_name(&tmp, &tmp, class_name TSRMLS_CC); - *class_name = tmp; - } + if (ZEND_HANDLE_NUMERIC(Z_STR(node->u.constant), index)) { + zval_ptr_dtor(&node->u.constant); + ZVAL_LONG(&node->u.constant, index); } - } else if (CG(current_import) || CG(current_namespace)) { - /* this is a plain name (without \) */ - lcname = zend_str_tolower_dup(Z_STRVAL(class_name->u.constant), Z_STRLEN(class_name->u.constant)); + } +} +/* }}} */ - if (CG(current_import) && - zend_hash_find(CG(current_import), lcname, Z_STRLEN(class_name->u.constant)+1, (void**)&ns) == SUCCESS) { - /* The given name is an import name. Substitute it. */ - zval_dtor(&class_name->u.constant); - class_name->u.constant = **ns; - zval_copy_ctor(&class_name->u.constant); - } else if (CG(current_namespace)) { - /* plain name, no import - prepend current namespace to it */ - tmp.op_type = IS_CONST; - tmp.u.constant = *CG(current_namespace); - zval_copy_ctor(&tmp.u.constant); - zend_do_build_namespace_name(&tmp, &tmp, class_name TSRMLS_CC); - *class_name = tmp; - } - efree(lcname); +static inline void zend_set_class_name_op1(zend_op *opline, znode *class_node TSRMLS_DC) /* {{{ */ +{ + if (class_node->op_type == IS_CONST) { + opline->op1_type = IS_CONST; + opline->op1.constant = zend_add_class_name_literal( + CG(active_op_array), Z_STR(class_node->u.constant) TSRMLS_CC); + } else { + SET_NODE(opline->op1, class_node); } } /* }}} */ -void zend_do_fetch_class(znode *result, znode *class_name TSRMLS_DC) /* {{{ */ +static zend_op *zend_compile_class_ref(znode *result, zend_ast *name_ast TSRMLS_DC) /* {{{ */ { - long fetch_class_op_number; zend_op *opline; + znode name_node; + zend_compile_expr(&name_node, name_ast TSRMLS_CC); - fetch_class_op_number = get_next_op_number(CG(active_op_array)); - opline = get_next_op(CG(active_op_array) TSRMLS_CC); + if (name_node.op_type == IS_CONST) { + zend_string *name = Z_STR(name_node.u.constant); + uint32_t fetch_type = zend_get_class_fetch_type(name); - opline->opcode = ZEND_FETCH_CLASS; - SET_UNUSED(opline->op1); - opline->extended_value = ZEND_FETCH_CLASS_DEFAULT; - CG(catch_begin) = fetch_class_op_number; - if (class_name->op_type == IS_CONST) { - int fetch_type; + opline = zend_emit_op(result, ZEND_FETCH_CLASS, NULL, NULL TSRMLS_CC); + opline->extended_value = fetch_type; - fetch_type = zend_get_class_fetch_type(Z_STRVAL(class_name->u.constant), Z_STRLEN(class_name->u.constant)); - switch (fetch_type) { - case ZEND_FETCH_CLASS_SELF: - case ZEND_FETCH_CLASS_PARENT: - case ZEND_FETCH_CLASS_STATIC: - SET_UNUSED(opline->op2); - opline->extended_value = fetch_type; - zval_dtor(&class_name->u.constant); - break; - default: - zend_resolve_class_name(class_name TSRMLS_CC); - opline->op2_type = IS_CONST; - opline->op2.constant = - zend_add_class_name_literal(CG(active_op_array), &class_name->u.constant TSRMLS_CC); - break; + if (fetch_type == ZEND_FETCH_CLASS_DEFAULT) { + uint32_t type = name_ast->kind == ZEND_AST_ZVAL ? name_ast->attr : ZEND_NAME_FQ; + opline->op2_type = IS_CONST; + opline->op2.constant = zend_add_class_name_literal(CG(active_op_array), + zend_resolve_class_name(name, type TSRMLS_CC) TSRMLS_CC); } + + zend_string_release(name); } else { - SET_NODE(opline->op2, class_name); + opline = zend_emit_op(result, ZEND_FETCH_CLASS, NULL, &name_node TSRMLS_CC); + opline->extended_value = ZEND_FETCH_CLASS_DEFAULT; } - opline->result.var = get_temporary_variable(CG(active_op_array)); - opline->result_type = IS_VAR; /* FIXME: Hack so that INIT_FCALL_BY_NAME still knows this is a class */ - GET_NODE(result, opline->result); - result->EA = opline->extended_value; + + return opline; } /* }}} */ -void zend_do_label(znode *label TSRMLS_DC) /* {{{ */ +static int zend_try_compile_cv(znode *result, zend_ast *ast TSRMLS_DC) /* {{{ */ { - zend_label dest; + zend_ast *name_ast = ast->child[0]; + if (name_ast->kind == ZEND_AST_ZVAL) { + zend_string *name = zval_get_string(zend_ast_get_zval(name_ast)); - if (!CG(context).labels) { - ALLOC_HASHTABLE(CG(context).labels); - zend_hash_init(CG(context).labels, 4, NULL, NULL, 0); - } + if (zend_is_auto_global(name TSRMLS_CC)) { + zend_string_release(name); + return FAILURE; + } - dest.brk_cont = CG(context).current_brk_cont; - dest.opline_num = get_next_op_number(CG(active_op_array)); + result->op_type = IS_CV; + result->u.op.var = lookup_cv(CG(active_op_array), name TSRMLS_CC); - if (zend_hash_add(CG(context).labels, Z_STRVAL(label->u.constant), Z_STRLEN(label->u.constant) + 1, (void**)&dest, sizeof(zend_label), NULL) == FAILURE) { - zend_error(E_COMPILE_ERROR, "Label '%s' already defined", Z_STRVAL(label->u.constant)); + if (zend_string_equals_literal(name, "this")) { + CG(active_op_array)->this_var = result->u.op.var; + } + return SUCCESS; } - /* Done with label now */ - zval_dtor(&label->u.constant); + return FAILURE; } /* }}} */ -void zend_resolve_goto_label(zend_op_array *op_array, zend_op *opline, int pass2 TSRMLS_DC) /* {{{ */ +static zend_op *zend_compile_simple_var_no_cv(znode *result, zend_ast *ast, uint32_t type TSRMLS_DC) /* {{{ */ { - zend_label *dest; - long current, distance; - zval *label; + zend_ast *name_ast = ast->child[0]; + znode name_node; + zend_op *opline; - if (pass2) { - label = opline->op2.zv; - } else { - label = &CONSTANT_EX(op_array, opline->op2.constant); + /* there is a chance someone is accessing $this */ + if (ast->kind != ZEND_AST_ZVAL + && CG(active_op_array)->scope && CG(active_op_array)->this_var == -1 + ) { + zend_string *key = zend_string_init("this", sizeof("this") - 1, 0); + CG(active_op_array)->this_var = lookup_cv(CG(active_op_array), key TSRMLS_CC); } - if (CG(context).labels == NULL || - zend_hash_find(CG(context).labels, Z_STRVAL_P(label), Z_STRLEN_P(label)+1, (void**)&dest) == FAILURE) { - if (pass2) { - CG(in_compilation) = 1; - CG(active_op_array) = op_array; - CG(zend_lineno) = opline->lineno; - zend_error(E_COMPILE_ERROR, "'goto' to undefined label '%s'", Z_STRVAL_P(label)); - } else { - /* Label is not defined. Delay to pass 2. */ - INC_BPC(op_array); - return; + zend_compile_expr(&name_node, name_ast TSRMLS_CC); + + opline = zend_emit_op(result, ZEND_FETCH_R, &name_node, NULL TSRMLS_CC); + + opline->extended_value = ZEND_FETCH_LOCAL; + if (name_node.op_type == IS_CONST) { + if (zend_is_auto_global(Z_STR(name_node.u.constant) TSRMLS_CC)) { + opline->extended_value = ZEND_FETCH_GLOBAL; } } - opline->op1.opline_num = dest->opline_num; - zval_dtor(label); - Z_TYPE_P(label) = IS_NULL; + return opline; +} +/* }}} */ - /* Check that we are not moving into loop or switch */ - current = opline->extended_value; - for (distance = 0; current != dest->brk_cont; distance++) { - if (current == -1) { - if (pass2) { - CG(in_compilation) = 1; - CG(active_op_array) = op_array; - CG(zend_lineno) = opline->lineno; - } - zend_error(E_COMPILE_ERROR, "'goto' into loop or switch statement is disallowed"); +static void zend_compile_simple_var(znode *result, zend_ast *ast, uint32_t type TSRMLS_DC) /* {{{ */ +{ + if (zend_try_compile_cv(result, ast TSRMLS_CC) == FAILURE) { + zend_op *opline = zend_compile_simple_var_no_cv(result, ast, type TSRMLS_CC); + zend_adjust_for_fetch_type(opline, type); + } +} +/* }}} */ + +static void zend_separate_if_call_and_write(znode *node, zend_ast *ast, uint32_t type TSRMLS_DC) /* {{{ */ +{ + if (type != BP_VAR_R && type != BP_VAR_IS && zend_is_call(ast)) { + if (node->op_type == IS_VAR) { + zend_op *opline = zend_emit_op(NULL, ZEND_SEPARATE, node, NULL TSRMLS_CC); + opline->result_type = IS_VAR; + opline->result.var = opline->op1.var; + } else { + zend_error_noreturn(E_COMPILE_ERROR, "Cannot use result of built-in function in write context"); } - current = op_array->brk_cont_array[current].parent; } +} +/* }}} */ - if (distance == 0) { - /* Nothing to break out of, optimize to ZEND_JMP */ - opline->opcode = ZEND_JMP; - opline->extended_value = 0; - SET_UNUSED(opline->op2); +void zend_delayed_compile_var(znode *result, zend_ast *ast, uint32_t type TSRMLS_DC); +void zend_compile_assign(znode *result, zend_ast *ast TSRMLS_DC); +static void zend_compile_list_assign(znode *result, zend_ast *ast, znode *expr_node TSRMLS_DC); + +static inline void zend_emit_assign_znode(zend_ast *var_ast, znode *value_node TSRMLS_DC) /* {{{ */ +{ + znode dummy_node; + if (var_ast->kind == ZEND_AST_LIST) { + zend_compile_list_assign(&dummy_node, var_ast, value_node TSRMLS_CC); } else { - /* Set real break distance */ - ZVAL_LONG(label, distance); + zend_ast *assign_ast = zend_ast_create(ZEND_AST_ASSIGN, var_ast, + zend_ast_create_znode(value_node)); + zend_compile_assign(&dummy_node, assign_ast TSRMLS_CC); } + zend_do_free(&dummy_node TSRMLS_CC); +} +/* }}} */ - if (pass2) { - DEC_BPC(op_array); +static zend_op *zend_delayed_compile_dim(znode *result, zend_ast *ast, uint32_t type TSRMLS_DC) /* {{{ */ +{ + zend_ast *var_ast = ast->child[0]; + zend_ast *dim_ast = ast->child[1]; + + znode var_node, dim_node; + + zend_delayed_compile_var(&var_node, var_ast, type TSRMLS_CC); + zend_separate_if_call_and_write(&var_node, var_ast, type TSRMLS_CC); + + if (dim_ast == NULL) { + if (type == BP_VAR_R || type == BP_VAR_IS) { + zend_error_noreturn(E_COMPILE_ERROR, "Cannot use [] for reading"); + } + if (type == BP_VAR_UNSET) { + zend_error_noreturn(E_COMPILE_ERROR, "Cannot use [] for unsetting"); + } + dim_node.op_type = IS_UNUSED; + } else { + zend_compile_expr(&dim_node, dim_ast TSRMLS_CC); + zend_handle_numeric_op(&dim_node TSRMLS_CC); } + + return zend_delayed_emit_op(result, ZEND_FETCH_DIM_R, &var_node, &dim_node TSRMLS_CC); } /* }}} */ -void zend_do_goto(const znode *label TSRMLS_DC) /* {{{ */ +static inline zend_op *zend_compile_dim_common(znode *result, zend_ast *ast, uint32_t type TSRMLS_DC) /* {{{ */ { - zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); + uint32_t offset = zend_delayed_compile_begin(TSRMLS_C); + zend_delayed_compile_dim(result, ast, type TSRMLS_CC); + return zend_delayed_compile_end(offset TSRMLS_CC); +} +/* }}} */ - opline->opcode = ZEND_GOTO; - opline->extended_value = CG(context).current_brk_cont; - SET_UNUSED(opline->op1); - SET_NODE(opline->op2, label); - zend_resolve_goto_label(CG(active_op_array), opline, 0 TSRMLS_CC); +void zend_compile_dim(znode *result, zend_ast *ast, uint32_t type TSRMLS_DC) /* {{{ */ +{ + zend_op *opline = zend_compile_dim_common(result, ast, type TSRMLS_CC); + zend_adjust_for_fetch_type(opline, type); } /* }}} */ -void zend_release_labels(int temporary TSRMLS_DC) /* {{{ */ +static zend_bool is_this_fetch(zend_ast *ast) /* {{{ */ { - if (CG(context).labels) { - zend_hash_destroy(CG(context).labels); - FREE_HASHTABLE(CG(context).labels); - CG(context).labels = NULL; + if (ast->kind == ZEND_AST_VAR && ast->child[0]->kind == ZEND_AST_ZVAL) { + zval *name = zend_ast_get_zval(ast->child[0]); + return Z_TYPE_P(name) == IS_STRING && zend_string_equals_literal(Z_STR_P(name), "this"); } - if (!temporary && !zend_stack_is_empty(&CG(context_stack))) { - zend_compiler_context *ctx; - zend_stack_top(&CG(context_stack), (void**)&ctx); - CG(context) = *ctx; - zend_stack_del_top(&CG(context_stack)); - } + return 0; } /* }}} */ -void zend_do_build_full_name(znode *result, znode *prefix, znode *name, int is_class_member TSRMLS_DC) /* {{{ */ +static zend_op *zend_delayed_compile_prop(znode *result, zend_ast *ast, uint32_t type TSRMLS_DC) /* {{{ */ { - zend_uint length; + zend_ast *obj_ast = ast->child[0]; + zend_ast *prop_ast = ast->child[1]; - if (!result) { - result = prefix; + znode obj_node, prop_node; + zend_op *opline; + + if (is_this_fetch(obj_ast)) { + obj_node.op_type = IS_UNUSED; } else { - *result = *prefix; + zend_delayed_compile_var(&obj_node, obj_ast, type TSRMLS_CC); + zend_separate_if_call_and_write(&obj_node, obj_ast, type TSRMLS_CC); } + zend_compile_expr(&prop_node, prop_ast TSRMLS_CC); - if (is_class_member) { - length = sizeof("::")-1 + Z_STRLEN(result->u.constant) + Z_STRLEN(name->u.constant); - Z_STRVAL(result->u.constant) = erealloc(Z_STRVAL(result->u.constant), length+1); - memcpy(&Z_STRVAL(result->u.constant)[Z_STRLEN(result->u.constant)], "::", sizeof("::")-1); - memcpy(&Z_STRVAL(result->u.constant)[Z_STRLEN(result->u.constant) + sizeof("::")-1], Z_STRVAL(name->u.constant), Z_STRLEN(name->u.constant)+1); - str_efree(Z_STRVAL(name->u.constant)); - Z_STRLEN(result->u.constant) = length; - } else { - length = sizeof("\\")-1 + Z_STRLEN(result->u.constant) + Z_STRLEN(name->u.constant); - Z_STRVAL(result->u.constant) = erealloc(Z_STRVAL(result->u.constant), length+1); - memcpy(&Z_STRVAL(result->u.constant)[Z_STRLEN(result->u.constant)], "\\", sizeof("\\")-1); - memcpy(&Z_STRVAL(result->u.constant)[Z_STRLEN(result->u.constant) + sizeof("\\")-1], Z_STRVAL(name->u.constant), Z_STRLEN(name->u.constant)+1); - str_efree(Z_STRVAL(name->u.constant)); - Z_STRLEN(result->u.constant) = length; + opline = zend_delayed_emit_op(result, ZEND_FETCH_OBJ_R, &obj_node, &prop_node TSRMLS_CC); + if (opline->op2_type == IS_CONST && Z_TYPE(CONSTANT(opline->op2.constant)) == IS_STRING) { + zend_alloc_polymorphic_cache_slot(opline->op2.constant TSRMLS_CC); } + + return opline; +} +/* }}} */ + +static zend_op *zend_compile_prop_common(znode *result, zend_ast *ast, uint32_t type TSRMLS_DC) /* {{{ */ +{ + uint32_t offset = zend_delayed_compile_begin(TSRMLS_C); + zend_delayed_compile_prop(result, ast, type TSRMLS_CC); + return zend_delayed_compile_end(offset TSRMLS_CC); } /* }}} */ -int zend_do_begin_class_member_function_call(znode *class_name, znode *method_name TSRMLS_DC) /* {{{ */ +void zend_compile_prop(znode *result, zend_ast *ast, uint32_t type TSRMLS_DC) /* {{{ */ { - znode class_node; - unsigned char *ptr = NULL; + zend_op *opline = zend_compile_prop_common(result, ast, type TSRMLS_CC); + zend_adjust_for_fetch_type(opline, type); +} +/* }}} */ + +zend_op *zend_compile_static_prop_common(znode *result, zend_ast *ast, uint32_t type TSRMLS_DC) /* {{{ */ +{ + zend_ast *class_ast = ast->child[0]; + zend_ast *prop_ast = ast->child[1]; + + znode class_node, prop_node; zend_op *opline; - if (method_name->op_type == IS_CONST) { - char *lcname; - if (Z_TYPE(method_name->u.constant) != IS_STRING) { - zend_error(E_COMPILE_ERROR, "Method name must be a string"); - } - lcname = zend_str_tolower_dup(Z_STRVAL(method_name->u.constant), Z_STRLEN(method_name->u.constant)); - if ((sizeof(ZEND_CONSTRUCTOR_FUNC_NAME)-1) == Z_STRLEN(method_name->u.constant) && - memcmp(lcname, ZEND_CONSTRUCTOR_FUNC_NAME, sizeof(ZEND_CONSTRUCTOR_FUNC_NAME)-1) == 0) { - zval_dtor(&method_name->u.constant); - method_name->op_type = IS_UNUSED; - } - efree(lcname); + if (zend_is_const_default_class_ref(class_ast)) { + class_node.op_type = IS_CONST; + ZVAL_STR(&class_node.u.constant, zend_resolve_class_name_ast(class_ast TSRMLS_CC)); + } else { + zend_compile_class_ref(&class_node, class_ast TSRMLS_CC); } - if (class_name->op_type == IS_CONST && - ZEND_FETCH_CLASS_DEFAULT == zend_get_class_fetch_type(Z_STRVAL(class_name->u.constant), Z_STRLEN(class_name->u.constant))) { - zend_resolve_class_name(class_name TSRMLS_CC); - class_node = *class_name; - opline = get_next_op(CG(active_op_array) TSRMLS_CC); - } else { - zend_do_fetch_class(&class_node, class_name TSRMLS_CC); - opline = get_next_op(CG(active_op_array) TSRMLS_CC); - opline->extended_value = class_node.EA ; + zend_compile_expr(&prop_node, prop_ast TSRMLS_CC); + + opline = zend_emit_op(result, ZEND_FETCH_R, &prop_node, NULL TSRMLS_CC); + if (opline->op1_type == IS_CONST) { + zend_alloc_polymorphic_cache_slot(opline->op1.constant TSRMLS_CC); } - opline->opcode = ZEND_INIT_STATIC_METHOD_CALL; - opline->result.num = CG(context).nested_calls; if (class_node.op_type == IS_CONST) { - opline->op1_type = IS_CONST; - opline->op1.constant = - zend_add_class_name_literal(CG(active_op_array), &class_node.u.constant TSRMLS_CC); - } else { - SET_NODE(opline->op1, &class_node); - } - if (method_name->op_type == IS_CONST) { opline->op2_type = IS_CONST; - opline->op2.constant = - zend_add_func_name_literal(CG(active_op_array), &method_name->u.constant TSRMLS_CC); - if (opline->op1_type == IS_CONST) { - GET_CACHE_SLOT(opline->op2.constant); - } else { - GET_POLYMORPHIC_CACHE_SLOT(opline->op2.constant); - } + opline->op2.constant = zend_add_class_name_literal( + CG(active_op_array), Z_STR(class_node.u.constant) TSRMLS_CC); } else { - SET_NODE(opline->op2, method_name); + SET_NODE(opline->op2, &class_node); } + opline->extended_value |= ZEND_FETCH_STATIC_MEMBER; - zend_stack_push(&CG(function_call_stack), (void *) &ptr, sizeof(zend_function *)); - if (++CG(context).nested_calls > CG(active_op_array)->nested_calls) { - CG(active_op_array)->nested_calls = CG(context).nested_calls; - } - zend_do_extended_fcall_begin(TSRMLS_C); - return 1; /* Dynamic */ + return opline; } /* }}} */ -void zend_do_end_function_call(znode *function_name, znode *result, const znode *argument_list, int is_method, int is_dynamic_fcall TSRMLS_DC) /* {{{ */ +void zend_compile_static_prop(znode *result, zend_ast *ast, uint32_t type TSRMLS_DC) /* {{{ */ { - zend_op *opline; + zend_op *opline = zend_compile_static_prop_common(result, ast, type TSRMLS_CC); + zend_adjust_for_fetch_type(opline, type); +} +/* }}} */ - if (is_method && function_name && function_name->op_type == IS_UNUSED) { - /* clone */ - if (Z_LVAL(argument_list->u.constant) != 0) { - zend_error(E_WARNING, "Clone method does not require arguments"); - } - opline = &CG(active_op_array)->opcodes[Z_LVAL(function_name->u.constant)]; - } else { - opline = get_next_op(CG(active_op_array) TSRMLS_CC); - if (!is_method && !is_dynamic_fcall && function_name->op_type==IS_CONST) { - opline->opcode = ZEND_DO_FCALL; - SET_NODE(opline->op1, function_name); - SET_UNUSED(opline->op2); - opline->op2.num = CG(context).nested_calls; - CALCULATE_LITERAL_HASH(opline->op1.constant); - GET_CACHE_SLOT(opline->op1.constant); - } else { - opline->opcode = ZEND_DO_FCALL_BY_NAME; - SET_UNUSED(opline->op1); - SET_UNUSED(opline->op2); - opline->op2.num = --CG(context).nested_calls; - } +static void zend_compile_list_assign(znode *result, zend_ast *ast, znode *expr_node TSRMLS_DC) /* {{{ */ +{ + zend_ast_list *list = zend_ast_get_list(ast); + uint32_t i; + + if (list->children == 1 && !list->child[0]) { + zend_error_noreturn(E_COMPILE_ERROR, "Cannot use empty list"); } - opline->result.var = get_temporary_variable(CG(active_op_array)); - opline->result_type = IS_VAR; - GET_NODE(result, opline->result); + for (i = 0; i < list->children; ++i) { + zend_ast *var_ast = list->child[i]; + znode fetch_result, dim_node; + + if (var_ast == NULL) { + continue; + } - zend_stack_del_top(&CG(function_call_stack)); - opline->extended_value = Z_LVAL(argument_list->u.constant); + dim_node.op_type = IS_CONST; + ZVAL_LONG(&dim_node.u.constant, i); - if (CG(context).used_stack + 1 > CG(active_op_array)->used_stack) { - CG(active_op_array)->used_stack = CG(context).used_stack + 1; + if (expr_node->op_type == IS_CONST) { + Z_TRY_ADDREF(expr_node->u.constant); + } + + zend_emit_op(&fetch_result, ZEND_FETCH_LIST, expr_node, &dim_node TSRMLS_CC); + zend_emit_assign_znode(var_ast, &fetch_result TSRMLS_CC); } - CG(context).used_stack -= Z_LVAL(argument_list->u.constant); + *result = *expr_node; } /* }}} */ -void zend_do_pass_param(znode *param, zend_uchar op, int offset TSRMLS_DC) /* {{{ */ +void zend_ensure_writable_variable(const zend_ast *ast) /* {{{ */ { - zend_op *opline; - int original_op=op; - zend_function **function_ptr_ptr, *function_ptr; - int send_by_reference; - int send_function = 0; - - zend_stack_top(&CG(function_call_stack), (void **) &function_ptr_ptr); - function_ptr = *function_ptr_ptr; - - if (original_op == ZEND_SEND_REF) { - if (function_ptr && - function_ptr->common.function_name && - function_ptr->common.type == ZEND_USER_FUNCTION && - !ARG_SHOULD_BE_SENT_BY_REF(function_ptr, (zend_uint) offset)) { - zend_error(E_COMPILE_ERROR, - "Call-time pass-by-reference has been removed; " - "If you would like to pass argument by reference, modify the declaration of %s().", - function_ptr->common.function_name); - } else { - zend_error(E_COMPILE_ERROR, "Call-time pass-by-reference has been removed"); - } - return; + if (ast->kind == ZEND_AST_CALL) { + zend_error_noreturn(E_COMPILE_ERROR, "Can't use function return value in write context"); } - - if (function_ptr) { - if (ARG_MAY_BE_SENT_BY_REF(function_ptr, (zend_uint) offset)) { - if (param->op_type & (IS_VAR|IS_CV) && original_op != ZEND_SEND_VAL) { - send_by_reference = 1; - if (op == ZEND_SEND_VAR && zend_is_function_or_method_call(param)) { - /* Method call */ - op = ZEND_SEND_VAR_NO_REF; - send_function = ZEND_ARG_SEND_FUNCTION | ZEND_ARG_SEND_SILENT; - } - } else { - op = ZEND_SEND_VAL; - send_by_reference = 0; - } - } else { - send_by_reference = ARG_SHOULD_BE_SENT_BY_REF(function_ptr, (zend_uint) offset) ? ZEND_ARG_SEND_BY_REF : 0; - } - } else { - send_by_reference = 0; - } - - if (op == ZEND_SEND_VAR && zend_is_function_or_method_call(param)) { - /* Method call */ - op = ZEND_SEND_VAR_NO_REF; - send_function = ZEND_ARG_SEND_FUNCTION; - } else if (op == ZEND_SEND_VAL && (param->op_type & (IS_VAR|IS_CV))) { - op = ZEND_SEND_VAR_NO_REF; + if (ast->kind == ZEND_AST_METHOD_CALL || ast->kind == ZEND_AST_STATIC_CALL) { + zend_error_noreturn(E_COMPILE_ERROR, "Can't use method return value in write context"); } +} +/* }}} */ - if (op!=ZEND_SEND_VAR_NO_REF && send_by_reference==ZEND_ARG_SEND_BY_REF) { - /* change to passing by reference */ - switch (param->op_type) { - case IS_VAR: - case IS_CV: - op = ZEND_SEND_REF; - break; - default: - zend_error(E_COMPILE_ERROR, "Only variables can be passed by reference"); - break; - } +/* Detects $a... = $a pattern */ +zend_bool zend_is_assign_to_self(zend_ast *var_ast, zend_ast *expr_ast TSRMLS_DC) /* {{{ */ +{ + if (expr_ast->kind != ZEND_AST_VAR || expr_ast->child[0]->kind != ZEND_AST_ZVAL) { + return 0; } - if (original_op == ZEND_SEND_VAR) { - switch (op) { - case ZEND_SEND_VAR_NO_REF: - zend_do_end_variable_parse(param, BP_VAR_R, 0 TSRMLS_CC); - break; - case ZEND_SEND_VAR: - if (function_ptr) { - zend_do_end_variable_parse(param, BP_VAR_R, 0 TSRMLS_CC); - } else { - zend_do_end_variable_parse(param, BP_VAR_FUNC_ARG, offset TSRMLS_CC); - } - break; - case ZEND_SEND_REF: - zend_do_end_variable_parse(param, BP_VAR_W, 0 TSRMLS_CC); - break; - } + while (zend_is_variable(var_ast) && var_ast->kind != ZEND_AST_VAR) { + var_ast = var_ast->child[0]; } - opline = get_next_op(CG(active_op_array) TSRMLS_CC); - - if (op == ZEND_SEND_VAR_NO_REF) { - if (function_ptr) { - opline->extended_value = ZEND_ARG_COMPILE_TIME_BOUND | send_by_reference | send_function; - } else { - opline->extended_value = send_function; - } - } else { - if (function_ptr) { - opline->extended_value = ZEND_DO_FCALL; - } else { - opline->extended_value = ZEND_DO_FCALL_BY_NAME; - } + if (var_ast->kind != ZEND_AST_VAR || var_ast->child[0]->kind != ZEND_AST_ZVAL) { + return 0; } - opline->opcode = op; - SET_NODE(opline->op1, param); - opline->op2.opline_num = offset; - SET_UNUSED(opline->op2); - if (++CG(context).used_stack > CG(active_op_array)->used_stack) { - CG(active_op_array)->used_stack = CG(context).used_stack; + { + zend_string *name1 = zval_get_string(zend_ast_get_zval(var_ast->child[0])); + zend_string *name2 = zval_get_string(zend_ast_get_zval(expr_ast->child[0])); + zend_bool result = zend_string_equals(name1, name2); + zend_string_release(name1); + zend_string_release(name2); + return result; } } /* }}} */ -static int generate_free_switch_expr(const zend_switch_entry *switch_entry TSRMLS_DC) /* {{{ */ +void zend_compile_assign(znode *result, zend_ast *ast TSRMLS_DC) /* {{{ */ { + zend_ast *var_ast = ast->child[0]; + zend_ast *expr_ast = ast->child[1]; + + znode var_node, expr_node; zend_op *opline; + uint32_t offset; - if (switch_entry->cond.op_type != IS_VAR && switch_entry->cond.op_type != IS_TMP_VAR) { - return (switch_entry->cond.op_type == IS_UNUSED); + if (is_this_fetch(var_ast)) { + zend_error_noreturn(E_COMPILE_ERROR, "Cannot re-assign $this"); } - opline = get_next_op(CG(active_op_array) TSRMLS_CC); + zend_ensure_writable_variable(var_ast); - opline->opcode = (switch_entry->cond.op_type == IS_TMP_VAR) ? ZEND_FREE : ZEND_SWITCH_FREE; - SET_NODE(opline->op1, &switch_entry->cond); - SET_UNUSED(opline->op2); - - return 0; -} -/* }}} */ + switch (var_ast->kind) { + case ZEND_AST_VAR: + case ZEND_AST_STATIC_PROP: + zend_compile_var(&var_node, var_ast, BP_VAR_W TSRMLS_CC); + zend_compile_expr(&expr_node, expr_ast TSRMLS_CC); + zend_emit_op(result, ZEND_ASSIGN, &var_node, &expr_node TSRMLS_CC); + return; + case ZEND_AST_DIM: + offset = zend_delayed_compile_begin(TSRMLS_C); + zend_delayed_compile_dim(result, var_ast, BP_VAR_W TSRMLS_CC); -static int generate_free_foreach_copy(const zend_op *foreach_copy TSRMLS_DC) /* {{{ */ -{ - zend_op *opline; + if (zend_is_assign_to_self(var_ast, expr_ast TSRMLS_CC)) { + /* $a[0] = $a should evaluate the right $a first */ + zend_compile_simple_var_no_cv(&expr_node, expr_ast, BP_VAR_R TSRMLS_CC); + } else { + zend_compile_expr(&expr_node, expr_ast TSRMLS_CC); + } - /* If we reach the separator then stop applying the stack */ - if (foreach_copy->result_type == IS_UNUSED) { - return 1; - } + opline = zend_delayed_compile_end(offset TSRMLS_CC); + opline->opcode = ZEND_ASSIGN_DIM; - opline = get_next_op(CG(active_op_array) TSRMLS_CC); + opline = zend_emit_op_data(&expr_node TSRMLS_CC); + opline->op2.var = get_temporary_variable(CG(active_op_array)); + opline->op2_type = IS_VAR; + return; + case ZEND_AST_PROP: + offset = zend_delayed_compile_begin(TSRMLS_C); + zend_delayed_compile_prop(result, var_ast, BP_VAR_W TSRMLS_CC); + zend_compile_expr(&expr_node, expr_ast TSRMLS_CC); - opline->opcode = (foreach_copy->result_type == IS_TMP_VAR) ? ZEND_FREE : ZEND_SWITCH_FREE; - COPY_NODE(opline->op1, foreach_copy->result); - SET_UNUSED(opline->op2); + opline = zend_delayed_compile_end(offset TSRMLS_CC); + opline->opcode = ZEND_ASSIGN_OBJ; - return 0; + zend_emit_op_data(&expr_node TSRMLS_CC); + return; + case ZEND_AST_LIST: + zend_compile_expr(&expr_node, expr_ast TSRMLS_CC); + zend_compile_list_assign(result, var_ast, &expr_node TSRMLS_CC); + return; + EMPTY_SWITCH_DEFAULT_CASE(); + } } /* }}} */ -void zend_do_return(znode *expr, int do_end_vparse TSRMLS_DC) /* {{{ */ +void zend_compile_assign_ref(znode *result, zend_ast *ast TSRMLS_DC) /* {{{ */ { - zend_op *opline; - int start_op_number, end_op_number; - zend_bool returns_reference = (CG(active_op_array)->fn_flags & ZEND_ACC_RETURN_REFERENCE) != 0; + zend_ast *target_ast = ast->child[0]; + zend_ast *source_ast = ast->child[1]; - /* The error for use of return inside a generator is thrown in pass_two. */ + znode target_node, source_node; + zend_op *opline; - if (do_end_vparse) { - if (returns_reference && !zend_is_function_or_method_call(expr)) { - zend_do_end_variable_parse(expr, BP_VAR_W, 0 TSRMLS_CC); - } else { - zend_do_end_variable_parse(expr, BP_VAR_R, 0 TSRMLS_CC); - } + if (is_this_fetch(target_ast)) { + zend_error_noreturn(E_COMPILE_ERROR, "Cannot re-assign $this"); } + zend_ensure_writable_variable(target_ast); - start_op_number = get_next_op_number(CG(active_op_array)); - -#ifdef ZTS - zend_stack_apply_with_argument(&CG(switch_cond_stack), ZEND_STACK_APPLY_TOPDOWN, (int (*)(void *element, void *)) generate_free_switch_expr TSRMLS_CC); - zend_stack_apply_with_argument(&CG(foreach_copy_stack), ZEND_STACK_APPLY_TOPDOWN, (int (*)(void *element, void *)) generate_free_foreach_copy TSRMLS_CC); -#else - zend_stack_apply(&CG(switch_cond_stack), ZEND_STACK_APPLY_TOPDOWN, (int (*)(void *element)) generate_free_switch_expr); - zend_stack_apply(&CG(foreach_copy_stack), ZEND_STACK_APPLY_TOPDOWN, (int (*)(void *element)) generate_free_foreach_copy); -#endif + zend_compile_var(&target_node, target_ast, BP_VAR_W TSRMLS_CC); + zend_compile_var(&source_node, source_ast, BP_VAR_REF TSRMLS_CC); - end_op_number = get_next_op_number(CG(active_op_array)); - while (start_op_number < end_op_number) { - CG(active_op_array)->opcodes[start_op_number].extended_value |= EXT_TYPE_FREE_ON_RETURN; - start_op_number++; + if (source_node.op_type != IS_VAR && zend_is_call(source_ast)) { + zend_error_noreturn(E_COMPILE_ERROR, "Cannot use result of built-in function in write context"); } - if (CG(context).in_finally) { - opline = get_next_op(CG(active_op_array) TSRMLS_CC); - opline->opcode = ZEND_DISCARD_EXCEPTION; - SET_UNUSED(opline->op1); - SET_UNUSED(opline->op2); + opline = zend_emit_op(result, ZEND_ASSIGN_REF, &target_node, &source_node TSRMLS_CC); + if (!result) { + opline->result_type |= EXT_TYPE_UNUSED; } - opline = get_next_op(CG(active_op_array) TSRMLS_CC); - - opline->opcode = returns_reference ? ZEND_RETURN_BY_REF : ZEND_RETURN; - - if (expr) { - SET_NODE(opline->op1, expr); - - if (do_end_vparse && zend_is_function_or_method_call(expr)) { - opline->extended_value = ZEND_RETURNS_FUNCTION; - } - } else { - opline->op1_type = IS_CONST; - LITERAL_NULL(opline->op1); + if (zend_is_call(source_ast)) { + opline->extended_value = ZEND_RETURNS_FUNCTION; + } else if (source_ast->kind == ZEND_AST_NEW) { + zend_error(E_DEPRECATED, "Assigning the return value of new by reference is deprecated"); + opline->extended_value = ZEND_RETURNS_NEW; } +} +/* }}} */ - SET_UNUSED(opline->op2); +static inline void zend_emit_assign_ref_znode(zend_ast *var_ast, znode *value_node TSRMLS_DC) /* {{{ */ +{ + zend_ast *assign_ast = zend_ast_create(ZEND_AST_ASSIGN_REF, var_ast, + zend_ast_create_znode(value_node)); + zend_compile_assign_ref(NULL, assign_ast TSRMLS_CC); } /* }}} */ -void zend_do_yield(znode *result, znode *value, const znode *key, zend_bool is_variable TSRMLS_DC) /* {{{ */ +void zend_compile_compound_assign(znode *result, zend_ast *ast TSRMLS_DC) /* {{{ */ { + zend_ast *var_ast = ast->child[0]; + zend_ast *expr_ast = ast->child[1]; + uint32_t opcode = ast->attr; + + znode var_node, expr_node; zend_op *opline; + uint32_t offset; - if (!CG(active_op_array)->function_name) { - zend_error(E_COMPILE_ERROR, "The \"yield\" expression can only be used inside a function"); - } + zend_ensure_writable_variable(var_ast); - CG(active_op_array)->fn_flags |= ZEND_ACC_GENERATOR; + switch (var_ast->kind) { + case ZEND_AST_VAR: + case ZEND_AST_STATIC_PROP: + zend_compile_var(&var_node, var_ast, BP_VAR_RW TSRMLS_CC); + zend_compile_expr(&expr_node, expr_ast TSRMLS_CC); + zend_emit_op(result, opcode, &var_node, &expr_node TSRMLS_CC); + return; + case ZEND_AST_DIM: + offset = zend_delayed_compile_begin(TSRMLS_C); + zend_delayed_compile_dim(result, var_ast, BP_VAR_RW TSRMLS_CC); + zend_compile_expr(&expr_node, expr_ast TSRMLS_CC); + + opline = zend_delayed_compile_end(offset TSRMLS_CC); + opline->opcode = opcode; + opline->extended_value = ZEND_ASSIGN_DIM; + + opline = zend_emit_op_data(&expr_node TSRMLS_CC); + opline->op2.var = get_temporary_variable(CG(active_op_array)); + opline->op2_type = IS_VAR; + return; + case ZEND_AST_PROP: + offset = zend_delayed_compile_begin(TSRMLS_C); + zend_delayed_compile_prop(result, var_ast, BP_VAR_RW TSRMLS_CC); + zend_compile_expr(&expr_node, expr_ast TSRMLS_CC); - if (is_variable) { - if ((CG(active_op_array)->fn_flags & ZEND_ACC_RETURN_REFERENCE) && !zend_is_function_or_method_call(value)) { - zend_do_end_variable_parse(value, BP_VAR_W, 0 TSRMLS_CC); - } else { - zend_do_end_variable_parse(value, BP_VAR_R, 0 TSRMLS_CC); - } - } + opline = zend_delayed_compile_end(offset TSRMLS_CC); + opline->opcode = opcode; + opline->extended_value = ZEND_ASSIGN_OBJ; - opline = get_next_op(CG(active_op_array) TSRMLS_CC); + zend_emit_op_data(&expr_node TSRMLS_CC); + return; + EMPTY_SWITCH_DEFAULT_CASE() + } +} +/* }}} */ - opline->opcode = ZEND_YIELD; +uint32_t zend_compile_args(zend_ast *ast, zend_function *fbc TSRMLS_DC) /* {{{ */ +{ + /* TODO.AST &var error */ + zend_ast_list *args = zend_ast_get_list(ast); + uint32_t i; + zend_bool uses_arg_unpack = 0; + uint32_t arg_count = 0; /* number of arguments not including unpacks */ - if (value) { - SET_NODE(opline->op1, value); + for (i = 0; i < args->children; ++i) { + zend_ast *arg = args->child[i]; + uint32_t arg_num = i + 1; - if (is_variable && zend_is_function_or_method_call(value)) { - opline->extended_value = ZEND_RETURNS_FUNCTION; + znode arg_node; + zend_op *opline; + zend_uchar opcode; + zend_ulong flags = 0; + + if (arg->kind == ZEND_AST_UNPACK) { + uses_arg_unpack = 1; + fbc = NULL; + + zend_compile_expr(&arg_node, arg->child[0] TSRMLS_CC); + opline = zend_emit_op(NULL, ZEND_SEND_UNPACK, &arg_node, NULL TSRMLS_CC); + opline->op2.num = arg_count; + continue; + } + + if (uses_arg_unpack) { + zend_error_noreturn(E_COMPILE_ERROR, + "Cannot use positional argument after argument unpacking"); + } + + arg_count++; + if (zend_is_variable(arg)) { + if (zend_is_call(arg)) { + zend_compile_var(&arg_node, arg, BP_VAR_R TSRMLS_CC); + if (arg_node.op_type & (IS_CONST|IS_TMP_VAR)) { + /* Function call was converted into builtin instruction */ + opcode = ZEND_SEND_VAL; + } else { + opcode = ZEND_SEND_VAR_NO_REF; + flags |= ZEND_ARG_SEND_FUNCTION; + if (fbc && ARG_SHOULD_BE_SENT_BY_REF(fbc, arg_num)) { + flags |= ZEND_ARG_SEND_BY_REF; + if (ARG_MAY_BE_SENT_BY_REF(fbc, arg_num)) { + flags |= ZEND_ARG_SEND_SILENT; + } + } + } + } else if (fbc) { + if (ARG_SHOULD_BE_SENT_BY_REF(fbc, arg_num)) { + zend_compile_var(&arg_node, arg, BP_VAR_W TSRMLS_CC); + opcode = ZEND_SEND_REF; + } else { + zend_compile_var(&arg_node, arg, BP_VAR_R TSRMLS_CC); + opcode = ZEND_SEND_VAR; + } + } else { + zend_compile_var(&arg_node, arg, + BP_VAR_FUNC_ARG | (arg_num << BP_VAR_SHIFT) TSRMLS_CC); + opcode = ZEND_SEND_VAR_EX; + } + } else { + zend_compile_expr(&arg_node, arg TSRMLS_CC); + if (arg_node.op_type & (IS_VAR|IS_CV)) { + opcode = ZEND_SEND_VAR_NO_REF; + if (fbc && ARG_MUST_BE_SENT_BY_REF(fbc, arg_num)) { + flags |= ZEND_ARG_SEND_BY_REF; + } + } else { + if (fbc) { + opcode = ZEND_SEND_VAL; + if (ARG_MUST_BE_SENT_BY_REF(fbc, arg_num)) { + zend_error_noreturn(E_COMPILE_ERROR, "Only variables can be passed by reference"); + } + } else { + opcode = ZEND_SEND_VAL_EX; + } + } } - } else { - SET_UNUSED(opline->op1); - } - if (key) { - SET_NODE(opline->op2, key); - } else { + opline = get_next_op(CG(active_op_array) TSRMLS_CC); + opline->opcode = opcode; + SET_NODE(opline->op1, &arg_node); SET_UNUSED(opline->op2); + opline->op2.opline_num = arg_num; + + if (opcode == ZEND_SEND_VAR_NO_REF) { + if (fbc) { + flags |= ZEND_ARG_COMPILE_TIME_BOUND; + } + opline->extended_value = flags; + } else if (fbc) { + opline->extended_value = ZEND_ARG_COMPILE_TIME_BOUND; + } } - opline->result_type = IS_TMP_VAR; - opline->result.var = get_temporary_variable(CG(active_op_array)); - GET_NODE(result, opline->result); + return arg_count; } /* }}} */ -static int zend_add_try_element(zend_uint try_op TSRMLS_DC) /* {{{ */ +void zend_compile_call_common(znode *result, zend_ast *args_ast, zend_function *fbc TSRMLS_DC) /* {{{ */ { - int try_catch_offset = CG(active_op_array)->last_try_catch++; + zend_op *opline; + uint32_t opnum_init = get_next_op_number(CG(active_op_array)) - 1; + uint32_t arg_count; + uint32_t call_flags; - CG(active_op_array)->try_catch_array = erealloc(CG(active_op_array)->try_catch_array, sizeof(zend_try_catch_element)*CG(active_op_array)->last_try_catch); - CG(active_op_array)->try_catch_array[try_catch_offset].try_op = try_op; - CG(active_op_array)->try_catch_array[try_catch_offset].catch_op = 0; - CG(active_op_array)->try_catch_array[try_catch_offset].finally_op = 0; - CG(active_op_array)->try_catch_array[try_catch_offset].finally_end = 0; - return try_catch_offset; -} -/* }}} */ + zend_do_extended_fcall_begin(TSRMLS_C); -static void zend_add_catch_element(int offset, zend_uint catch_op TSRMLS_DC) /* {{{ */ -{ - CG(active_op_array)->try_catch_array[offset].catch_op = catch_op; + arg_count = zend_compile_args(args_ast, fbc TSRMLS_CC); + + opline = &CG(active_op_array)->opcodes[opnum_init]; + opline->extended_value = arg_count; + + call_flags = (opline->opcode == ZEND_NEW ? ZEND_CALL_CTOR : 0); + opline = zend_emit_op(result, ZEND_DO_FCALL, NULL, NULL TSRMLS_CC); + opline->op1.num = call_flags; + + zend_do_extended_fcall_end(TSRMLS_C); } /* }}} */ -void zend_do_first_catch(znode *open_parentheses TSRMLS_DC) /* {{{ */ +zend_bool zend_compile_function_name(znode *name_node, zend_ast *name_ast TSRMLS_DC) /* {{{ */ { - open_parentheses->u.op.opline_num = get_next_op_number(CG(active_op_array)); + zend_string *orig_name = zend_ast_get_str(name_ast); + zend_bool is_fully_qualified; + + name_node->op_type = IS_CONST; + ZVAL_STR(&name_node->u.constant, zend_resolve_function_name( + orig_name, name_ast->attr, &is_fully_qualified TSRMLS_CC)); + + return !is_fully_qualified && CG(current_namespace); } /* }}} */ -void zend_initialize_try_catch_element(znode *catch_token TSRMLS_DC) /* {{{ */ +void zend_compile_ns_call(znode *result, znode *name_node, zend_ast *args_ast TSRMLS_DC) /* {{{ */ { - int jmp_op_number = get_next_op_number(CG(active_op_array)); zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); - zend_llist jmp_list; - zend_llist *jmp_list_ptr; - - opline->opcode = ZEND_JMP; + opline->opcode = ZEND_INIT_NS_FCALL_BY_NAME; SET_UNUSED(opline->op1); - SET_UNUSED(opline->op2); - /* save for backpatching */ - - zend_llist_init(&jmp_list, sizeof(int), NULL, 0); - zend_stack_push(&CG(bp_stack), (void *) &jmp_list, sizeof(zend_llist)); - zend_stack_top(&CG(bp_stack), (void **) &jmp_list_ptr); - zend_llist_add_element(jmp_list_ptr, &jmp_op_number); + opline->op2_type = IS_CONST; + opline->op2.constant = zend_add_ns_func_name_literal( + CG(active_op_array), Z_STR(name_node->u.constant) TSRMLS_CC); + zend_alloc_cache_slot(opline->op2.constant TSRMLS_CC); - catch_token->EA = get_next_op_number(CG(active_op_array)); + zend_compile_call_common(result, args_ast, NULL TSRMLS_CC); } /* }}} */ -void zend_do_mark_last_catch(const znode *first_catch, const znode *last_additional_catch TSRMLS_DC) /* {{{ */ +void zend_compile_dynamic_call(znode *result, znode *name_node, zend_ast *args_ast TSRMLS_DC) /* {{{ */ { - CG(active_op_array)->last--; - zend_do_if_end(TSRMLS_C); - if (last_additional_catch->u.op.opline_num == -1) { - CG(active_op_array)->opcodes[first_catch->u.op.opline_num].result.num = 1; - CG(active_op_array)->opcodes[first_catch->u.op.opline_num].extended_value = get_next_op_number(CG(active_op_array)); + zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); + opline->opcode = ZEND_INIT_FCALL_BY_NAME; + SET_UNUSED(opline->op1); + if (name_node->op_type == IS_CONST && Z_TYPE(name_node->u.constant) == IS_STRING) { + opline->op2_type = IS_CONST; + opline->op2.constant = zend_add_func_name_literal(CG(active_op_array), + Z_STR(name_node->u.constant) TSRMLS_CC); + zend_alloc_cache_slot(opline->op2.constant TSRMLS_CC); } else { - CG(active_op_array)->opcodes[last_additional_catch->u.op.opline_num].result.num = 1; - CG(active_op_array)->opcodes[last_additional_catch->u.op.opline_num].extended_value = get_next_op_number(CG(active_op_array)); + SET_NODE(opline->op2, name_node); } - DEC_BPC(CG(active_op_array)); + + zend_compile_call_common(result, args_ast, NULL TSRMLS_CC); } /* }}} */ -void zend_do_try(znode *try_token TSRMLS_DC) /* {{{ */ +static zend_bool zend_args_contain_unpack(zend_ast_list *args) /* {{{ */ { - try_token->u.op.opline_num = zend_add_try_element(get_next_op_number(CG(active_op_array)) TSRMLS_CC); - INC_BPC(CG(active_op_array)); + uint32_t i; + for (i = 0; i < args->children; ++i) { + if (args->child[i]->kind == ZEND_AST_UNPACK) { + return 1; + } + } + return 0; } /* }}} */ -void zend_do_finally(znode *finally_token TSRMLS_DC) /* {{{ */ +int zend_compile_func_strlen(znode *result, zend_ast_list *args TSRMLS_DC) /* {{{ */ { - zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); + znode arg_node; - finally_token->u.op.opline_num = get_next_op_number(CG(active_op_array)); - /* call the the "finally" block */ - opline->opcode = ZEND_FAST_CALL; - SET_UNUSED(opline->op1); - opline->op1.opline_num = finally_token->u.op.opline_num + 1; - SET_UNUSED(opline->op2); - /* jump to code after the "finally" block, - * the actual jump address is going to be set in zend_do_end_finally() - */ - opline = get_next_op(CG(active_op_array) TSRMLS_CC); - opline->opcode = ZEND_JMP; - SET_UNUSED(opline->op1); - SET_UNUSED(opline->op2); + if ((CG(compiler_options) & ZEND_COMPILE_NO_BUILTIN_STRLEN) + || args->children != 1 || args->child[0]->kind == ZEND_AST_UNPACK + ) { + return FAILURE; + } - CG(context).in_finally++; + zend_compile_expr(&arg_node, args->child[0] TSRMLS_CC); + zend_emit_op_tmp(result, ZEND_STRLEN, &arg_node, NULL TSRMLS_CC); + return SUCCESS; } /* }}} */ -void zend_do_begin_catch(znode *catch_token, znode *class_name, znode *catch_var, znode *first_catch TSRMLS_DC) /* {{{ */ +int zend_compile_func_typecheck(znode *result, zend_ast_list *args, uint32_t type TSRMLS_DC) /* {{{ */ { - long catch_op_number; + znode arg_node; zend_op *opline; - znode catch_class; - - if (class_name->op_type == IS_CONST && - ZEND_FETCH_CLASS_DEFAULT == zend_get_class_fetch_type(Z_STRVAL(class_name->u.constant), Z_STRLEN(class_name->u.constant))) { - zend_resolve_class_name(class_name TSRMLS_CC); - catch_class = *class_name; - } else { - zend_error(E_COMPILE_ERROR, "Bad class name in the catch statement"); - } - catch_op_number = get_next_op_number(CG(active_op_array)); - if (first_catch) { - first_catch->u.op.opline_num = catch_op_number; + if (args->children != 1 || args->child[0]->kind == ZEND_AST_UNPACK) { + return FAILURE; } - - opline = get_next_op(CG(active_op_array) TSRMLS_CC); - opline->opcode = ZEND_CATCH; - opline->op1_type = IS_CONST; - opline->op1.constant = zend_add_class_name_literal(CG(active_op_array), &catch_class.u.constant TSRMLS_CC); - opline->op2_type = IS_CV; - opline->op2.var = lookup_cv(CG(active_op_array), Z_STRVAL(catch_var->u.constant), Z_STRLEN(catch_var->u.constant), 0 TSRMLS_CC); - Z_STRVAL(catch_var->u.constant) = (char*)CG(active_op_array)->vars[opline->op2.var].name; - opline->result.num = 0; /* 1 means it's the last catch in the block */ - - catch_token->u.op.opline_num = catch_op_number; + + zend_compile_expr(&arg_node, args->child[0] TSRMLS_CC); + opline = zend_emit_op_tmp(result, ZEND_TYPE_CHECK, &arg_node, NULL TSRMLS_CC); + opline->extended_value = type; + return SUCCESS; } /* }}} */ -void zend_do_end_catch(znode *catch_token TSRMLS_DC) /* {{{ */ +int zend_compile_func_defined(znode *result, zend_ast_list *args TSRMLS_DC) /* {{{ */ { - int jmp_op_number = get_next_op_number(CG(active_op_array)); - zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); - zend_llist *jmp_list_ptr; + zend_string *name; + zend_op *opline; - opline->opcode = ZEND_JMP; - SET_UNUSED(opline->op1); - SET_UNUSED(opline->op2); - /* save for backpatching */ + if (args->children != 1 || args->child[0]->kind != ZEND_AST_ZVAL) { + return FAILURE; + } - zend_stack_top(&CG(bp_stack), (void **) &jmp_list_ptr); - zend_llist_add_element(jmp_list_ptr, &jmp_op_number); + name = zval_get_string(zend_ast_get_zval(args->child[0])); + if (zend_memrchr(name->val, '\\', name->len) || zend_memrchr(name->val, ':', name->len)) { + zend_string_release(name); + return FAILURE; + } - CG(active_op_array)->opcodes[catch_token->u.op.opline_num].extended_value = get_next_op_number(CG(active_op_array)); -} -/* }}} */ + opline = zend_emit_op_tmp(result, ZEND_DEFINED, NULL, NULL TSRMLS_CC); + opline->op1_type = IS_CONST; + LITERAL_STR(opline->op1, name); + zend_alloc_cache_slot(opline->op1.constant TSRMLS_CC); -void zend_do_bind_catch(znode *try_token, znode *catch_token TSRMLS_DC) /* {{{ */ { - if (catch_token->op_type != IS_UNUSED) { - zend_add_catch_element(try_token->u.op.opline_num, catch_token->EA TSRMLS_CC); + /* Lowercase constant name in a separate literal */ + { + zval c; + zend_string *lcname = zend_string_alloc(name->len, 0); + zend_str_tolower_copy(lcname->val, name->val, name->len); + ZVAL_NEW_STR(&c, lcname); + zend_add_literal(CG(active_op_array), &c TSRMLS_CC); } + return SUCCESS; } /* }}} */ -void zend_do_end_finally(znode *try_token, znode* catch_token, znode *finally_token TSRMLS_DC) /* {{{ */ +static int zend_try_compile_ct_bound_init_user_func(zend_ast *name_ast, uint32_t num_args TSRMLS_DC) /* {{{ */ { - if (catch_token->op_type == IS_UNUSED && finally_token->op_type == IS_UNUSED) { - zend_error(E_COMPILE_ERROR, "Cannot use try without catch or finally"); + zend_string *name, *lcname; + zend_function *fbc; + zend_op *opline; + + if (name_ast->kind != ZEND_AST_ZVAL || Z_TYPE_P(zend_ast_get_zval(name_ast)) != IS_STRING) { + return FAILURE; } - if (finally_token->op_type != IS_UNUSED) { - zend_op *opline; - CG(active_op_array)->try_catch_array[try_token->u.op.opline_num].finally_op = finally_token->u.op.opline_num + 1; - CG(active_op_array)->try_catch_array[try_token->u.op.opline_num].finally_end = get_next_op_number(CG(active_op_array)); - CG(active_op_array)->has_finally_block = 1; + name = zend_ast_get_str(name_ast); + lcname = zend_string_alloc(name->len, 0); + zend_str_tolower_copy(lcname->val, name->val, name->len); - opline = get_next_op(CG(active_op_array) TSRMLS_CC); - opline->opcode = ZEND_FAST_RET; - SET_UNUSED(opline->op1); - SET_UNUSED(opline->op2); + fbc = zend_hash_find_ptr(CG(function_table), lcname); + if (!fbc || (fbc->type == ZEND_INTERNAL_FUNCTION && + (CG(compiler_options) & ZEND_COMPILE_IGNORE_INTERNAL_FUNCTIONS)) + ) { + zend_string_free(lcname); + return FAILURE; + } - CG(active_op_array)->opcodes[finally_token->u.op.opline_num].op1.opline_num = get_next_op_number(CG(active_op_array)); + opline = zend_emit_op(NULL, ZEND_INIT_FCALL, NULL, NULL TSRMLS_CC); + opline->extended_value = num_args; - CG(context).in_finally--; - } + opline->op2_type = IS_CONST; + LITERAL_STR(opline->op2, lcname); + zend_alloc_cache_slot(opline->op2.constant TSRMLS_CC); + + return SUCCESS; } /* }}} */ -void zend_do_throw(const znode *expr TSRMLS_DC) /* {{{ */ +static void zend_compile_init_user_func(zend_ast *name_ast, uint32_t num_args, zend_string *orig_func_name TSRMLS_DC) /* {{{ */ { zend_op *opline; + znode name_node; - opline = get_next_op(CG(active_op_array) TSRMLS_CC); - opline->opcode = ZEND_THROW; - SET_NODE(opline->op1, expr); - SET_UNUSED(opline->op2); + if (zend_try_compile_ct_bound_init_user_func(name_ast, num_args TSRMLS_CC) == SUCCESS) { + return; + } + + zend_compile_expr(&name_node, name_ast TSRMLS_CC); + + opline = zend_emit_op(NULL, ZEND_INIT_USER_CALL, NULL, &name_node TSRMLS_CC); + opline->op1_type = IS_CONST; + LITERAL_STR(opline->op1, zend_string_copy(orig_func_name)); + opline->extended_value = num_args; } /* }}} */ -ZEND_API void function_add_ref(zend_function *function) /* {{{ */ +/* cufa = call_user_func_array */ +int zend_compile_func_cufa(znode *result, zend_ast_list *args, zend_string *lcname TSRMLS_DC) /* {{{ */ { - if (function->type == ZEND_USER_FUNCTION) { - zend_op_array *op_array = &function->op_array; + znode arg_node; - (*op_array->refcount)++; - if (op_array->static_variables) { - HashTable *static_variables = op_array->static_variables; - zval *tmp_zval; - - ALLOC_HASHTABLE(op_array->static_variables); - zend_hash_init(op_array->static_variables, zend_hash_num_elements(static_variables), NULL, ZVAL_PTR_DTOR, 0); - zend_hash_copy(op_array->static_variables, static_variables, (copy_ctor_func_t) zval_add_ref, (void *) &tmp_zval, sizeof(zval *)); - } - op_array->run_time_cache = NULL; + if (args->children != 2 || zend_args_contain_unpack(args)) { + return FAILURE; } + + zend_compile_init_user_func(args->child[0], 1, lcname TSRMLS_CC); + zend_compile_expr(&arg_node, args->child[1] TSRMLS_CC); + zend_emit_op(NULL, ZEND_SEND_ARRAY, &arg_node, NULL TSRMLS_CC); + zend_emit_op(result, ZEND_DO_FCALL, NULL, NULL TSRMLS_CC); + + return SUCCESS; } /* }}} */ -static void do_inherit_parent_constructor(zend_class_entry *ce) /* {{{ */ +/* cuf = call_user_func */ +int zend_compile_func_cuf(znode *result, zend_ast_list *args, zend_string *lcname TSRMLS_DC) /* {{{ */ { - zend_function *function, *new_function; + uint32_t i; - if (!ce->parent) { - return; + if (args->children < 1 || zend_args_contain_unpack(args)) { + return FAILURE; } - /* You cannot change create_object */ - ce->create_object = ce->parent->create_object; + zend_compile_init_user_func(args->child[0], args->children - 1, lcname TSRMLS_CC); + for (i = 1; i < args->children; ++i) { + zend_ast *arg_ast = args->child[i]; + znode arg_node; + zend_op *opline; + zend_bool send_user = 0; - /* Inherit special functions if needed */ - if (!ce->get_iterator) { - ce->get_iterator = ce->parent->get_iterator; - } - if (!ce->iterator_funcs.funcs) { - ce->iterator_funcs.funcs = ce->parent->iterator_funcs.funcs; - } - if (!ce->__get) { - ce->__get = ce->parent->__get; - } - if (!ce->__set) { - ce->__set = ce->parent->__set; - } - if (!ce->__unset) { - ce->__unset = ce->parent->__unset; - } - if (!ce->__isset) { - ce->__isset = ce->parent->__isset; - } - if (!ce->__call) { - ce->__call = ce->parent->__call; - } - if (!ce->__callstatic) { - ce->__callstatic = ce->parent->__callstatic; - } - if (!ce->__tostring) { - ce->__tostring = ce->parent->__tostring; - } - if (!ce->clone) { - ce->clone = ce->parent->clone; - } - if(!ce->serialize) { - ce->serialize = ce->parent->serialize; - } - if(!ce->unserialize) { - ce->unserialize = ce->parent->unserialize; - } - if (!ce->destructor) { - ce->destructor = ce->parent->destructor; - } - if (ce->constructor) { - if (ce->parent->constructor && ce->parent->constructor->common.fn_flags & ZEND_ACC_FINAL) { - zend_error(E_ERROR, "Cannot override final %s::%s() with %s::%s()", - ce->parent->name, ce->parent->constructor->common.function_name, - ce->name, ce->constructor->common.function_name - ); + if (zend_is_variable(arg_ast) && !zend_is_call(arg_ast)) { + zend_compile_var(&arg_node, arg_ast, BP_VAR_FUNC_ARG | (i << BP_VAR_SHIFT) TSRMLS_CC); + send_user = 1; + } else { + zend_compile_expr(&arg_node, arg_ast TSRMLS_CC); + if (arg_node.op_type & (IS_VAR|IS_CV)) { + send_user = 1; + } } - return; - } - if (zend_hash_find(&ce->parent->function_table, ZEND_CONSTRUCTOR_FUNC_NAME, sizeof(ZEND_CONSTRUCTOR_FUNC_NAME), (void **)&function)==SUCCESS) { - /* inherit parent's constructor */ - zend_hash_update(&ce->function_table, ZEND_CONSTRUCTOR_FUNC_NAME, sizeof(ZEND_CONSTRUCTOR_FUNC_NAME), function, sizeof(zend_function), (void**)&new_function); - function_add_ref(new_function); - } else { - /* Don't inherit the old style constructor if we already have the new style constructor */ - char *lc_class_name; - char *lc_parent_class_name; - - lc_class_name = zend_str_tolower_dup(ce->name, ce->name_length); - if (!zend_hash_exists(&ce->function_table, lc_class_name, ce->name_length+1)) { - lc_parent_class_name = zend_str_tolower_dup(ce->parent->name, ce->parent->name_length); - if (!zend_hash_exists(&ce->function_table, lc_parent_class_name, ce->parent->name_length+1) && - zend_hash_find(&ce->parent->function_table, lc_parent_class_name, ce->parent->name_length+1, (void **)&function)==SUCCESS) { - if (function->common.fn_flags & ZEND_ACC_CTOR) { - /* inherit parent's constructor */ - zend_hash_update(&ce->function_table, lc_parent_class_name, ce->parent->name_length+1, function, sizeof(zend_function), (void**)&new_function); - function_add_ref(new_function); - } - } - efree(lc_parent_class_name); + if (send_user) { + opline = zend_emit_op(NULL, ZEND_SEND_USER, &arg_node, NULL TSRMLS_CC); + } else { + opline = zend_emit_op(NULL, ZEND_SEND_VAL, &arg_node, NULL TSRMLS_CC); } - efree(lc_class_name); - } - ce->constructor = ce->parent->constructor; -} -/* }}} */ -char *zend_visibility_string(zend_uint fn_flags) /* {{{ */ -{ - if (fn_flags & ZEND_ACC_PRIVATE) { - return "private"; + opline->op2.opline_num = i; } - if (fn_flags & ZEND_ACC_PROTECTED) { - return "protected"; - } - if (fn_flags & ZEND_ACC_PUBLIC) { - return "public"; - } - return ""; + zend_emit_op(result, ZEND_DO_FCALL, NULL, NULL TSRMLS_CC); + + return SUCCESS; } /* }}} */ -static void do_inherit_method(zend_function *function) /* {{{ */ -{ - /* The class entry of the derived function intentionally remains the same - * as that of the parent class. That allows us to know in which context - * we're running, and handle private method calls properly. - */ - function_add_ref(function); +int zend_try_compile_special_func(znode *result, zend_string *lcname, zend_ast_list *args TSRMLS_DC) /* {{{ */ +{ + if (zend_string_equals_literal(lcname, "strlen")) { + return zend_compile_func_strlen(result, args TSRMLS_CC); + } else if (zend_string_equals_literal(lcname, "is_null")) { + return zend_compile_func_typecheck(result, args, IS_NULL TSRMLS_CC); + } else if (zend_string_equals_literal(lcname, "is_bool")) { + return zend_compile_func_typecheck(result, args, _IS_BOOL TSRMLS_CC); + } else if (zend_string_equals_literal(lcname, "is_long") + || zend_string_equals_literal(lcname, "is_int") + || zend_string_equals_literal(lcname, "is_integer") + ) { + return zend_compile_func_typecheck(result, args, IS_LONG TSRMLS_CC); + } else if (zend_string_equals_literal(lcname, "is_float") + || zend_string_equals_literal(lcname, "is_double") + || zend_string_equals_literal(lcname, "is_real") + ) { + return zend_compile_func_typecheck(result, args, IS_DOUBLE TSRMLS_CC); + } else if (zend_string_equals_literal(lcname, "is_string")) { + return zend_compile_func_typecheck(result, args, IS_STRING TSRMLS_CC); + } else if (zend_string_equals_literal(lcname, "is_array")) { + return zend_compile_func_typecheck(result, args, IS_ARRAY TSRMLS_CC); + } else if (zend_string_equals_literal(lcname, "is_object")) { + return zend_compile_func_typecheck(result, args, IS_OBJECT TSRMLS_CC); + } else if (zend_string_equals_literal(lcname, "is_resource")) { + return zend_compile_func_typecheck(result, args, IS_RESOURCE TSRMLS_CC); + } else if (zend_string_equals_literal(lcname, "defined")) { + return zend_compile_func_defined(result, args TSRMLS_CC); + } else if (zend_string_equals_literal(lcname, "call_user_func_array")) { + return zend_compile_func_cufa(result, args, lcname TSRMLS_CC); + } else if (zend_string_equals_literal(lcname, "call_user_func")) { + return zend_compile_func_cuf(result, args, lcname TSRMLS_CC); + } else { + return FAILURE; + } } /* }}} */ -static zend_bool zend_do_perform_implementation_check(const zend_function *fe, const zend_function *proto TSRMLS_DC) /* {{{ */ +void zend_compile_call(znode *result, zend_ast *ast, uint32_t type TSRMLS_DC) /* {{{ */ { - zend_uint i, num_args; - - /* If it's a user function then arg_info == NULL means we don't have any parameters but - * we still need to do the arg number checks. We are only willing to ignore this for internal - * functions because extensions don't always define arg_info. - */ - if (!proto || (!proto->common.arg_info && proto->common.type != ZEND_USER_FUNCTION)) { - return 1; - } - - /* Checks for constructors only if they are declared in an interface, - * or explicitly marked as abstract - */ - if ((fe->common.fn_flags & ZEND_ACC_CTOR) - && ((proto->common.scope->ce_flags & ZEND_ACC_INTERFACE) == 0 - && (proto->common.fn_flags & ZEND_ACC_ABSTRACT) == 0)) { - return 1; - } - - /* If both methods are private do not enforce a signature */ - if ((fe->common.fn_flags & ZEND_ACC_PRIVATE) && (proto->common.fn_flags & ZEND_ACC_PRIVATE)) { - return 1; - } + zend_ast *name_ast = ast->child[0]; + zend_ast *args_ast = ast->child[1]; - /* check number of arguments */ - if (proto->common.required_num_args < fe->common.required_num_args - || proto->common.num_args > fe->common.num_args) { - return 0; - } + znode name_node; - /* by-ref constraints on return values are covariant */ - if ((proto->common.fn_flags & ZEND_ACC_RETURN_REFERENCE) - && !(fe->common.fn_flags & ZEND_ACC_RETURN_REFERENCE)) { - return 0; + if (name_ast->kind != ZEND_AST_ZVAL || Z_TYPE_P(zend_ast_get_zval(name_ast)) != IS_STRING) { + zend_compile_expr(&name_node, name_ast TSRMLS_CC); + zend_compile_dynamic_call(result, &name_node, args_ast TSRMLS_CC); + return; } - if ((proto->common.fn_flags & ZEND_ACC_VARIADIC) - && !(fe->common.fn_flags & ZEND_ACC_VARIADIC)) { - return 0; + { + zend_bool runtime_resolution = zend_compile_function_name(&name_node, name_ast TSRMLS_CC); + if (runtime_resolution) { + zend_compile_ns_call(result, &name_node, args_ast TSRMLS_CC); + return; + } } - /* For variadic functions any additional (optional) arguments that were added must be - * checked against the signature of the variadic argument, so in this case we have to - * go through all the parameters of the function and not just those present in the - * prototype. */ - num_args = proto->common.num_args; - if ((fe->common.fn_flags & ZEND_ACC_VARIADIC) - && fe->common.num_args > proto->common.num_args) { - num_args = fe->common.num_args; - } + { + zval *name = &name_node.u.constant; + zend_string *lcname = zend_string_alloc(Z_STRLEN_P(name), 0); + zend_function *fbc; + zend_op *opline; - for (i = 0; i < num_args; i++) { - zend_arg_info *fe_arg_info = &fe->common.arg_info[i]; + zend_str_tolower_copy(lcname->val, Z_STRVAL_P(name), Z_STRLEN_P(name)); - zend_arg_info *proto_arg_info; - if (i < proto->common.num_args) { - proto_arg_info = &proto->common.arg_info[i]; - } else { - proto_arg_info = &proto->common.arg_info[proto->common.num_args-1]; + fbc = zend_hash_find_ptr(CG(function_table), lcname); + if (!fbc || (fbc->type == ZEND_INTERNAL_FUNCTION && + (CG(compiler_options) & ZEND_COMPILE_IGNORE_INTERNAL_FUNCTIONS)) + ) { + zend_string_release(lcname); + zend_compile_dynamic_call(result, &name_node, args_ast TSRMLS_CC); + return; } - if (ZEND_LOG_XOR(fe_arg_info->class_name, proto_arg_info->class_name)) { - /* Only one has a type hint and the other one doesn't */ - return 0; + if (zend_try_compile_special_func(result, lcname, + zend_ast_get_list(args_ast) TSRMLS_CC) == SUCCESS + ) { + zend_string_release(lcname); + zval_ptr_dtor(&name_node.u.constant); + return; } - if (fe_arg_info->class_name) { - const char *fe_class_name, *proto_class_name; - zend_uint fe_class_name_len, proto_class_name_len; + zval_ptr_dtor(&name_node.u.constant); + ZVAL_NEW_STR(&name_node.u.constant, lcname); - if (!strcasecmp(fe_arg_info->class_name, "parent") && proto->common.scope) { - fe_class_name = proto->common.scope->name; - fe_class_name_len = proto->common.scope->name_length; - } else if (!strcasecmp(fe_arg_info->class_name, "self") && fe->common.scope) { - fe_class_name = fe->common.scope->name; - fe_class_name_len = fe->common.scope->name_length; - } else { - fe_class_name = fe_arg_info->class_name; - fe_class_name_len = fe_arg_info->class_name_len; - } + opline = zend_emit_op(NULL, ZEND_INIT_FCALL, NULL, &name_node TSRMLS_CC); + zend_alloc_cache_slot(opline->op2.constant TSRMLS_CC); - if (!strcasecmp(proto_arg_info->class_name, "parent") && proto->common.scope && proto->common.scope->parent) { - proto_class_name = proto->common.scope->parent->name; - proto_class_name_len = proto->common.scope->parent->name_length; - } else if (!strcasecmp(proto_arg_info->class_name, "self") && proto->common.scope) { - proto_class_name = proto->common.scope->name; - proto_class_name_len = proto->common.scope->name_length; - } else { - proto_class_name = proto_arg_info->class_name; - proto_class_name_len = proto_arg_info->class_name_len; - } + zend_compile_call_common(result, args_ast, fbc TSRMLS_CC); + } +} +/* }}} */ - if (strcasecmp(fe_class_name, proto_class_name)!=0) { - const char *colon; +void zend_compile_method_call(znode *result, zend_ast *ast, uint32_t type TSRMLS_DC) /* {{{ */ +{ + zend_ast *obj_ast = ast->child[0]; + zend_ast *method_ast = ast->child[1]; + zend_ast *args_ast = ast->child[2]; - if (fe->common.type != ZEND_USER_FUNCTION) { - return 0; - } else if (strchr(proto_class_name, '\\') != NULL || - (colon = zend_memrchr(fe_class_name, '\\', fe_class_name_len)) == NULL || - strcasecmp(colon+1, proto_class_name) != 0) { - zend_class_entry **fe_ce, **proto_ce; - int found, found2; - - found = zend_lookup_class(fe_class_name, fe_class_name_len, &fe_ce TSRMLS_CC); - found2 = zend_lookup_class(proto_class_name, proto_class_name_len, &proto_ce TSRMLS_CC); - - /* Check for class alias */ - if (found != SUCCESS || found2 != SUCCESS || - (*fe_ce)->type == ZEND_INTERNAL_CLASS || - (*proto_ce)->type == ZEND_INTERNAL_CLASS || - *fe_ce != *proto_ce) { - return 0; - } - } - } - } - if (fe_arg_info->type_hint != proto_arg_info->type_hint) { - /* Incompatible type hint */ - return 0; - } + znode obj_node, method_node; + zend_op *opline; - /* by-ref constraints on arguments are invariant */ - if (fe_arg_info->pass_by_reference != proto_arg_info->pass_by_reference) { - return 0; + if (is_this_fetch(obj_ast)) { + obj_node.op_type = IS_UNUSED; + } else { + zend_compile_expr(&obj_node, obj_ast TSRMLS_CC); + } + + zend_compile_expr(&method_node, method_ast TSRMLS_CC); + opline = zend_emit_op(NULL, ZEND_INIT_METHOD_CALL, &obj_node, NULL TSRMLS_CC); + + if (method_node.op_type == IS_CONST) { + if (Z_TYPE(method_node.u.constant) != IS_STRING) { + zend_error_noreturn(E_COMPILE_ERROR, "Method name must be a string"); } + + opline->op2_type = IS_CONST; + opline->op2.constant = zend_add_func_name_literal(CG(active_op_array), + Z_STR(method_node.u.constant) TSRMLS_CC); + zend_alloc_polymorphic_cache_slot(opline->op2.constant TSRMLS_CC); + } else { + SET_NODE(opline->op2, &method_node); } - return 1; + zend_compile_call_common(result, args_ast, NULL TSRMLS_CC); } /* }}} */ -#define REALLOC_BUF_IF_EXCEED(buf, offset, length, size) \ - if (UNEXPECTED(offset - buf + size >= length)) { \ - length += size + 1; \ - buf = erealloc(buf, length); \ - } +zend_bool zend_is_constructor(zend_string *name) /* {{{ */ +{ + return zend_string_equals_literal_ci(name, ZEND_CONSTRUCTOR_FUNC_NAME); +} +/* }}} */ -static char * zend_get_function_declaration(zend_function *fptr TSRMLS_DC) /* {{{ */ +void zend_compile_static_call(znode *result, zend_ast *ast, uint32_t type TSRMLS_DC) /* {{{ */ { - char *offset, *buf; - zend_uint length = 1024; + zend_ast *class_ast = ast->child[0]; + zend_ast *method_ast = ast->child[1]; + zend_ast *args_ast = ast->child[2]; - offset = buf = (char *)emalloc(length * sizeof(char)); - if (fptr->op_array.fn_flags & ZEND_ACC_RETURN_REFERENCE) { - *(offset++) = '&'; - *(offset++) = ' '; - } + znode class_node, method_node; + zend_op *opline; + zend_ulong extended_value = 0; - if (fptr->common.scope) { - memcpy(offset, fptr->common.scope->name, fptr->common.scope->name_length); - offset += fptr->common.scope->name_length; - *(offset++) = ':'; - *(offset++) = ':'; + if (zend_is_const_default_class_ref(class_ast)) { + class_node.op_type = IS_CONST; + ZVAL_STR(&class_node.u.constant, zend_resolve_class_name_ast(class_ast TSRMLS_CC)); + } else { + opline = zend_compile_class_ref(&class_node, class_ast TSRMLS_CC); + extended_value = opline->extended_value; } - { - size_t name_len = strlen(fptr->common.function_name); - REALLOC_BUF_IF_EXCEED(buf, offset, length, name_len); - memcpy(offset, fptr->common.function_name, name_len); - offset += name_len; - } - - *(offset++) = '('; - if (fptr->common.arg_info) { - zend_uint i, required; - zend_arg_info *arg_info = fptr->common.arg_info; - - required = fptr->common.required_num_args; - for (i = 0; i < fptr->common.num_args;) { - if (arg_info->class_name) { - const char *class_name; - zend_uint class_name_len; - if (!strcasecmp(arg_info->class_name, "self") && fptr->common.scope ) { - class_name = fptr->common.scope->name; - class_name_len = fptr->common.scope->name_length; - } else if (!strcasecmp(arg_info->class_name, "parent") && fptr->common.scope->parent) { - class_name = fptr->common.scope->parent->name; - class_name_len = fptr->common.scope->parent->name_length; - } else { - class_name = arg_info->class_name; - class_name_len = arg_info->class_name_len; - } - REALLOC_BUF_IF_EXCEED(buf, offset, length, class_name_len); - memcpy(offset, class_name, class_name_len); - offset += class_name_len; - *(offset++) = ' '; - } else if (arg_info->type_hint) { - zend_uint type_name_len; - char *type_name = zend_get_type_by_const(arg_info->type_hint); - type_name_len = strlen(type_name); - REALLOC_BUF_IF_EXCEED(buf, offset, length, type_name_len); - memcpy(offset, type_name, type_name_len); - offset += type_name_len; - *(offset++) = ' '; - } - - if (arg_info->pass_by_reference) { - *(offset++) = '&'; - } + zend_compile_expr(&method_node, method_ast TSRMLS_CC); + if (method_node.op_type == IS_CONST) { + zval *name = &method_node.u.constant; + if (Z_TYPE_P(name) != IS_STRING) { + zend_error_noreturn(E_COMPILE_ERROR, "Method name must be a string"); + } + if (zend_is_constructor(Z_STR_P(name))) { + zval_ptr_dtor(name); + method_node.op_type = IS_UNUSED; + } + } - if (arg_info->is_variadic) { - *(offset++) = '.'; - *(offset++) = '.'; - *(offset++) = '.'; - } + opline = get_next_op(CG(active_op_array) TSRMLS_CC); + opline->opcode = ZEND_INIT_STATIC_METHOD_CALL; + opline->extended_value = extended_value; - *(offset++) = '$'; + zend_set_class_name_op1(opline, &class_node TSRMLS_CC); - if (arg_info->name) { - REALLOC_BUF_IF_EXCEED(buf, offset, length, arg_info->name_len); - memcpy(offset, arg_info->name, arg_info->name_len); - offset += arg_info->name_len; - } else { - zend_uint idx = i; - memcpy(offset, "param", 5); - offset += 5; - do { - *(offset++) = (char) (idx % 10) + '0'; - idx /= 10; - } while (idx > 0); - } - if (i >= required && !arg_info->is_variadic) { - *(offset++) = ' '; - *(offset++) = '='; - *(offset++) = ' '; - if (fptr->type == ZEND_USER_FUNCTION) { - zend_op *precv = NULL; - { - zend_uint idx = i; - zend_op *op = ((zend_op_array *)fptr)->opcodes; - zend_op *end = op + ((zend_op_array *)fptr)->last; - - ++idx; - while (op < end) { - if ((op->opcode == ZEND_RECV || op->opcode == ZEND_RECV_INIT) - && op->op1.num == (long)idx) - { - precv = op; - } - ++op; - } - } - if (precv && precv->opcode == ZEND_RECV_INIT && precv->op2_type != IS_UNUSED) { - zval *zv, zv_copy; - int use_copy; - ALLOC_ZVAL(zv); - *zv = *precv->op2.zv; - zval_copy_ctor(zv); - INIT_PZVAL(zv); - zval_update_constant_ex(&zv, (void*)1, fptr->common.scope TSRMLS_CC); - if (Z_TYPE_P(zv) == IS_BOOL) { - if (Z_LVAL_P(zv)) { - memcpy(offset, "true", 4); - offset += 4; - } else { - memcpy(offset, "false", 5); - offset += 5; - } - } else if (Z_TYPE_P(zv) == IS_NULL) { - memcpy(offset, "NULL", 4); - offset += 4; - } else if (Z_TYPE_P(zv) == IS_STRING) { - *(offset++) = '\''; - REALLOC_BUF_IF_EXCEED(buf, offset, length, MIN(Z_STRLEN_P(zv), 10)); - memcpy(offset, Z_STRVAL_P(zv), MIN(Z_STRLEN_P(zv), 10)); - offset += MIN(Z_STRLEN_P(zv), 10); - if (Z_STRLEN_P(zv) > 10) { - *(offset++) = '.'; - *(offset++) = '.'; - *(offset++) = '.'; - } - *(offset++) = '\''; - } else if (Z_TYPE_P(zv) == IS_ARRAY) { - memcpy(offset, "Array", 5); - offset += 5; - } else { - zend_make_printable_zval(zv, &zv_copy, &use_copy); - REALLOC_BUF_IF_EXCEED(buf, offset, length, Z_STRLEN(zv_copy)); - memcpy(offset, Z_STRVAL(zv_copy), Z_STRLEN(zv_copy)); - offset += Z_STRLEN(zv_copy); - if (use_copy) { - zval_dtor(&zv_copy); - } - } - zval_ptr_dtor(&zv); - } - } else { - memcpy(offset, "NULL", 4); - offset += 4; - } - } - - if (++i < fptr->common.num_args) { - *(offset++) = ','; - *(offset++) = ' '; - } - arg_info++; - REALLOC_BUF_IF_EXCEED(buf, offset, length, 32); + if (method_node.op_type == IS_CONST) { + opline->op2_type = IS_CONST; + opline->op2.constant = zend_add_func_name_literal(CG(active_op_array), + Z_STR(method_node.u.constant) TSRMLS_CC); + if (opline->op1_type == IS_CONST) { + zend_alloc_cache_slot(opline->op2.constant TSRMLS_CC); + } else { + zend_alloc_polymorphic_cache_slot(opline->op2.constant TSRMLS_CC); } + } else { + SET_NODE(opline->op2, &method_node); } - *(offset++) = ')'; - *offset = '\0'; - return buf; + zend_compile_call_common(result, args_ast, NULL TSRMLS_CC); } /* }}} */ -static void do_inheritance_check_on_method(zend_function *child, zend_function *parent TSRMLS_DC) /* {{{ */ +void zend_compile_new(znode *result, zend_ast *ast TSRMLS_DC) /* {{{ */ { - zend_uint child_flags; - zend_uint parent_flags = parent->common.fn_flags; + zend_ast *class_ast = ast->child[0]; + zend_ast *args_ast = ast->child[1]; - if ((parent->common.scope->ce_flags & ZEND_ACC_INTERFACE) == 0 - && parent->common.fn_flags & ZEND_ACC_ABSTRACT - && parent->common.scope != (child->common.prototype ? child->common.prototype->common.scope : child->common.scope) - && child->common.fn_flags & (ZEND_ACC_ABSTRACT|ZEND_ACC_IMPLEMENTED_ABSTRACT)) { - zend_error(E_COMPILE_ERROR, "Can't inherit abstract function %s::%s() (previously declared abstract in %s)", - parent->common.scope->name, - child->common.function_name, - child->common.prototype ? child->common.prototype->common.scope->name : child->common.scope->name); - } + znode class_node, ctor_result; + zend_op *opline; + uint32_t opnum; - if (parent_flags & ZEND_ACC_FINAL) { - zend_error(E_COMPILE_ERROR, "Cannot override final method %s::%s()", ZEND_FN_SCOPE_NAME(parent), child->common.function_name); - } + zend_compile_class_ref(&class_node, class_ast TSRMLS_CC); - child_flags = child->common.fn_flags; - /* You cannot change from static to non static and vice versa. - */ - if ((child_flags & ZEND_ACC_STATIC) != (parent_flags & ZEND_ACC_STATIC)) { - if (child->common.fn_flags & ZEND_ACC_STATIC) { - zend_error(E_COMPILE_ERROR, "Cannot make non static method %s::%s() static in class %s", ZEND_FN_SCOPE_NAME(parent), child->common.function_name, ZEND_FN_SCOPE_NAME(child)); - } else { - zend_error(E_COMPILE_ERROR, "Cannot make static method %s::%s() non static in class %s", ZEND_FN_SCOPE_NAME(parent), child->common.function_name, ZEND_FN_SCOPE_NAME(child)); - } - } + opnum = get_next_op_number(CG(active_op_array)); + zend_emit_op(result, ZEND_NEW, &class_node, NULL TSRMLS_CC); - /* Disallow making an inherited method abstract. */ - if ((child_flags & ZEND_ACC_ABSTRACT) && !(parent_flags & ZEND_ACC_ABSTRACT)) { - zend_error(E_COMPILE_ERROR, "Cannot make non abstract method %s::%s() abstract in class %s", ZEND_FN_SCOPE_NAME(parent), child->common.function_name, ZEND_FN_SCOPE_NAME(child)); - } + zend_compile_call_common(&ctor_result, args_ast, NULL TSRMLS_CC); + zend_do_free(&ctor_result TSRMLS_CC); - if (parent_flags & ZEND_ACC_CHANGED) { - child->common.fn_flags |= ZEND_ACC_CHANGED; - } else { - /* Prevent derived classes from restricting access that was available in parent classes - */ - if ((child_flags & ZEND_ACC_PPP_MASK) > (parent_flags & ZEND_ACC_PPP_MASK)) { - zend_error(E_COMPILE_ERROR, "Access level to %s::%s() must be %s (as in class %s)%s", ZEND_FN_SCOPE_NAME(child), child->common.function_name, zend_visibility_string(parent_flags), ZEND_FN_SCOPE_NAME(parent), (parent_flags&ZEND_ACC_PUBLIC) ? "" : " or weaker"); - } else if (((child_flags & ZEND_ACC_PPP_MASK) < (parent_flags & ZEND_ACC_PPP_MASK)) - && ((parent_flags & ZEND_ACC_PPP_MASK) & ZEND_ACC_PRIVATE)) { - child->common.fn_flags |= ZEND_ACC_CHANGED; - } - } + /* New jumps over ctor call if ctor does not exist */ + opline = &CG(active_op_array)->opcodes[opnum]; + opline->op2.opline_num = get_next_op_number(CG(active_op_array)); +} +/* }}} */ - if (parent_flags & ZEND_ACC_PRIVATE) { - child->common.prototype = NULL; - } else if (parent_flags & ZEND_ACC_ABSTRACT) { - child->common.fn_flags |= ZEND_ACC_IMPLEMENTED_ABSTRACT; - child->common.prototype = parent; - } else if (!(parent->common.fn_flags & ZEND_ACC_CTOR) || (parent->common.prototype && (parent->common.prototype->common.scope->ce_flags & ZEND_ACC_INTERFACE))) { - /* ctors only have a prototype if it comes from an interface */ - child->common.prototype = parent->common.prototype ? parent->common.prototype : parent; - } +void zend_compile_clone(znode *result, zend_ast *ast TSRMLS_DC) /* {{{ */ +{ + zend_ast *obj_ast = ast->child[0]; - if (child->common.prototype && (child->common.prototype->common.fn_flags & ZEND_ACC_ABSTRACT)) { - if (!zend_do_perform_implementation_check(child, child->common.prototype TSRMLS_CC)) { - zend_error(E_COMPILE_ERROR, "Declaration of %s::%s() must be compatible with %s", ZEND_FN_SCOPE_NAME(child), child->common.function_name, zend_get_function_declaration(child->common.prototype TSRMLS_CC)); - } - } else if (EG(error_reporting) & E_STRICT || EG(user_error_handler)) { /* Check E_STRICT (or custom error handler) before the check so that we save some time */ - if (!zend_do_perform_implementation_check(child, parent TSRMLS_CC)) { - char *method_prototype = zend_get_function_declaration(parent TSRMLS_CC); - zend_error(E_STRICT, "Declaration of %s::%s() should be compatible with %s", ZEND_FN_SCOPE_NAME(child), child->common.function_name, method_prototype); - efree(method_prototype); - } - } + znode obj_node; + zend_compile_expr(&obj_node, obj_ast TSRMLS_CC); + + zend_emit_op(result, ZEND_CLONE, &obj_node, NULL TSRMLS_CC); } /* }}} */ -static zend_bool do_inherit_method_check(HashTable *child_function_table, zend_function *parent, const zend_hash_key *hash_key, zend_class_entry *child_ce) /* {{{ */ +void zend_compile_global_var(zend_ast *ast TSRMLS_DC) /* {{{ */ { - zend_uint parent_flags = parent->common.fn_flags; - zend_function *child; - TSRMLS_FETCH(); + zend_ast *var_ast = ast->child[0]; + zend_ast *name_ast = var_ast->child[0]; + + znode name_node, result; - if (zend_hash_quick_find(child_function_table, hash_key->arKey, hash_key->nKeyLength, hash_key->h, (void **) &child)==FAILURE) { - if (parent_flags & (ZEND_ACC_ABSTRACT)) { - child_ce->ce_flags |= ZEND_ACC_IMPLICIT_ABSTRACT_CLASS; + zend_compile_expr(&name_node, name_ast TSRMLS_CC); + if (name_node.op_type == IS_CONST) { + if (Z_TYPE(name_node.u.constant) != IS_STRING) { + convert_to_string(&name_node.u.constant); } - return 1; /* method doesn't exist in child, copy from parent */ } - do_inheritance_check_on_method(child, parent TSRMLS_CC); + if (zend_try_compile_cv(&result, var_ast TSRMLS_CC) == SUCCESS) { + zend_op *opline = zend_emit_op(NULL, ZEND_BIND_GLOBAL, &result, &name_node TSRMLS_CC); + zend_alloc_cache_slot(opline->op2.constant TSRMLS_CC); + } else { + zend_emit_op(&result, ZEND_FETCH_W, &name_node, NULL TSRMLS_CC); - return 0; + // TODO.AST Avoid double fetch + //opline->extended_value = ZEND_FETCH_GLOBAL_LOCK; + + zend_emit_assign_ref_znode(var_ast, &result TSRMLS_CC); + } } /* }}} */ -static zend_bool do_inherit_property_access_check(HashTable *target_ht, zend_property_info *parent_info, const zend_hash_key *hash_key, zend_class_entry *ce) /* {{{ */ +static void zend_compile_static_var_common(zend_ast *var_ast, zval *value, zend_bool by_ref TSRMLS_DC) /* {{{ */ { - zend_property_info *child_info; - zend_class_entry *parent_ce = ce->parent; + znode var_node, result; + zend_op *opline; - if (parent_info->flags & (ZEND_ACC_PRIVATE|ZEND_ACC_SHADOW)) { - if (zend_hash_quick_find(&ce->properties_info, hash_key->arKey, hash_key->nKeyLength, hash_key->h, (void **) &child_info)==SUCCESS) { - child_info->flags |= ZEND_ACC_CHANGED; - } else { - zend_hash_quick_update(&ce->properties_info, hash_key->arKey, hash_key->nKeyLength, hash_key->h, parent_info, sizeof(zend_property_info), (void **) &child_info); - if(ce->type & ZEND_INTERNAL_CLASS) { - zend_duplicate_property_info_internal(child_info); - } else { - zend_duplicate_property_info(child_info); - } - child_info->flags &= ~ZEND_ACC_PRIVATE; /* it's not private anymore */ - child_info->flags |= ZEND_ACC_SHADOW; /* but it's a shadow of private */ + zend_compile_expr(&var_node, var_ast TSRMLS_CC); + + if (!CG(active_op_array)->static_variables) { + if (CG(active_op_array)->scope) { + CG(active_op_array)->scope->ce_flags |= ZEND_HAS_STATIC_IN_METHODS; } - return 0; /* don't copy access information to child */ + ALLOC_HASHTABLE(CG(active_op_array)->static_variables); + zend_hash_init(CG(active_op_array)->static_variables, 8, NULL, ZVAL_PTR_DTOR, 0); } - if (zend_hash_quick_find(&ce->properties_info, hash_key->arKey, hash_key->nKeyLength, hash_key->h, (void **) &child_info)==SUCCESS) { - if ((parent_info->flags & ZEND_ACC_STATIC) != (child_info->flags & ZEND_ACC_STATIC)) { - zend_error(E_COMPILE_ERROR, "Cannot redeclare %s%s::$%s as %s%s::$%s", - (parent_info->flags & ZEND_ACC_STATIC) ? "static " : "non static ", parent_ce->name, hash_key->arKey, - (child_info->flags & ZEND_ACC_STATIC) ? "static " : "non static ", ce->name, hash_key->arKey); + zend_hash_update(CG(active_op_array)->static_variables, Z_STR(var_node.u.constant), value); - } - - if(parent_info->flags & ZEND_ACC_CHANGED) { - child_info->flags |= ZEND_ACC_CHANGED; - } + opline = zend_emit_op(&result, by_ref ? ZEND_FETCH_W : ZEND_FETCH_R, &var_node, NULL TSRMLS_CC); + opline->extended_value = ZEND_FETCH_STATIC; - if ((child_info->flags & ZEND_ACC_PPP_MASK) > (parent_info->flags & ZEND_ACC_PPP_MASK)) { - zend_error(E_COMPILE_ERROR, "Access level to %s::$%s must be %s (as in class %s)%s", ce->name, hash_key->arKey, zend_visibility_string(parent_info->flags), parent_ce->name, (parent_info->flags&ZEND_ACC_PUBLIC) ? "" : " or weaker"); - } else if ((child_info->flags & ZEND_ACC_STATIC) == 0) { - zval_ptr_dtor(&(ce->default_properties_table[parent_info->offset])); - ce->default_properties_table[parent_info->offset] = ce->default_properties_table[child_info->offset]; - ce->default_properties_table[child_info->offset] = NULL; - child_info->offset = parent_info->offset; - } - return 0; /* Don't copy from parent */ + if (by_ref) { + zend_ast *fetch_ast = zend_ast_create(ZEND_AST_VAR, var_ast); + zend_emit_assign_ref_znode(fetch_ast, &result TSRMLS_CC); } else { - return 1; /* Copy from parent */ + zend_ast *fetch_ast = zend_ast_create(ZEND_AST_VAR, var_ast); + zend_emit_assign_znode(fetch_ast, &result TSRMLS_CC); } } /* }}} */ -static inline void do_implement_interface(zend_class_entry *ce, zend_class_entry *iface TSRMLS_DC) /* {{{ */ +void zend_compile_static_var(zend_ast *ast TSRMLS_DC) /* {{{ */ { - if (!(ce->ce_flags & ZEND_ACC_INTERFACE) && iface->interface_gets_implemented && iface->interface_gets_implemented(iface, ce TSRMLS_CC) == FAILURE) { - zend_error(E_CORE_ERROR, "Class %s could not implement interface %s", ce->name, iface->name); - } - if (ce == iface) { - zend_error(E_ERROR, "Interface %s cannot implement itself", ce->name); + zend_ast *var_ast = ast->child[0]; + zend_ast *value_ast = ast->child[1]; + zval value_zv; + + if (value_ast) { + zend_const_expr_to_zval(&value_zv, value_ast TSRMLS_CC); + } else { + ZVAL_NULL(&value_zv); } + + zend_compile_static_var_common(var_ast, &value_zv, 1 TSRMLS_CC); } /* }}} */ -ZEND_API void zend_do_inherit_interfaces(zend_class_entry *ce, const zend_class_entry *iface TSRMLS_DC) /* {{{ */ +void zend_compile_unset(zend_ast *ast TSRMLS_DC) /* {{{ */ { - /* expects interface to be contained in ce's interface list already */ - zend_uint i, ce_num, if_num = iface->num_interfaces; - zend_class_entry *entry; + zend_ast *var_ast = ast->child[0]; - if (if_num==0) { - return; - } - ce_num = ce->num_interfaces; - - if (ce->type == ZEND_INTERNAL_CLASS) { - ce->interfaces = (zend_class_entry **) realloc(ce->interfaces, sizeof(zend_class_entry *) * (ce_num + if_num)); - } else { - ce->interfaces = (zend_class_entry **) erealloc(ce->interfaces, sizeof(zend_class_entry *) * (ce_num + if_num)); - } - - /* Inherit the interfaces, only if they're not already inherited by the class */ - while (if_num--) { - entry = iface->interfaces[if_num]; - for (i = 0; i < ce_num; i++) { - if (ce->interfaces[i] == entry) { - break; + znode var_node; + zend_op *opline; + switch (var_ast->kind) { + case ZEND_AST_VAR: + if (zend_try_compile_cv(&var_node, var_ast TSRMLS_CC) == SUCCESS) { + opline = zend_emit_op(NULL, ZEND_UNSET_VAR, &var_node, NULL TSRMLS_CC); + opline->extended_value = ZEND_FETCH_LOCAL | ZEND_QUICK_SET; + } else { + opline = zend_compile_simple_var_no_cv(NULL, var_ast, BP_VAR_UNSET TSRMLS_CC); + opline->opcode = ZEND_UNSET_VAR; } - } - if (i == ce_num) { - ce->interfaces[ce->num_interfaces++] = entry; - } - } - - /* and now call the implementing handlers */ - while (ce_num < ce->num_interfaces) { - do_implement_interface(ce, ce->interfaces[ce_num++] TSRMLS_CC); + return; + case ZEND_AST_DIM: + opline = zend_compile_dim_common(NULL, var_ast, BP_VAR_UNSET TSRMLS_CC); + opline->opcode = ZEND_UNSET_DIM; + return; + case ZEND_AST_PROP: + opline = zend_compile_prop_common(NULL, var_ast, BP_VAR_UNSET TSRMLS_CC); + opline->opcode = ZEND_UNSET_OBJ; + return; + case ZEND_AST_STATIC_PROP: + opline = zend_compile_static_prop_common(NULL, var_ast, BP_VAR_UNSET TSRMLS_CC); + opline->opcode = ZEND_UNSET_VAR; + return; + EMPTY_SWITCH_DEFAULT_CASE() } } /* }}} */ -#ifdef ZTS -static void zval_internal_ctor(zval **p) /* {{{ */ +static void zend_free_foreach_and_switch_variables(TSRMLS_D) /* {{{ */ { - zval *orig_ptr = *p; + uint32_t opnum_start, opnum_end, i; - ALLOC_ZVAL(*p); - MAKE_COPY_ZVAL(&orig_ptr, *p); -} -/* }}} */ + opnum_start = get_next_op_number(CG(active_op_array)); -# define zval_property_ctor(parent_ce, ce) \ - ((void (*)(void *)) (((parent_ce)->type != (ce)->type) ? zval_internal_ctor : zval_add_ref)) +#ifdef ZTS + zend_stack_apply_with_argument(&CG(loop_var_stack), ZEND_STACK_APPLY_TOPDOWN, (int (*)(void *element, void *)) generate_free_loop_var TSRMLS_CC); #else -# define zval_property_ctor(parent_ce, ce) \ - ((void (*)(void *)) zval_add_ref) + zend_stack_apply(&CG(loop_var_stack), ZEND_STACK_APPLY_TOPDOWN, (int (*)(void *element)) generate_free_loop_var); #endif -ZEND_API void zend_do_inheritance(zend_class_entry *ce, zend_class_entry *parent_ce TSRMLS_DC) /* {{{ */ -{ - zend_property_info *property_info; + opnum_end = get_next_op_number(CG(active_op_array)); - if ((ce->ce_flags & ZEND_ACC_INTERFACE) - && !(parent_ce->ce_flags & ZEND_ACC_INTERFACE)) { - zend_error(E_COMPILE_ERROR, "Interface %s may not inherit from class (%s)", ce->name, parent_ce->name); - } - if (parent_ce->ce_flags & ZEND_ACC_FINAL_CLASS) { - zend_error(E_COMPILE_ERROR, "Class %s may not inherit from final class (%s)", ce->name, parent_ce->name); + for (i = opnum_start; i < opnum_end; ++i) { + CG(active_op_array)->opcodes[i].extended_value |= EXT_TYPE_FREE_ON_RETURN; } +} +/* }}} */ - ce->parent = parent_ce; - /* Copy serialize/unserialize callbacks */ - if (!ce->serialize) { - ce->serialize = parent_ce->serialize; - } - if (!ce->unserialize) { - ce->unserialize = parent_ce->unserialize; - } +void zend_compile_return(zend_ast *ast TSRMLS_DC) /* {{{ */ +{ + zend_ast *expr_ast = ast->child[0]; + zend_bool by_ref = (CG(active_op_array)->fn_flags & ZEND_ACC_RETURN_REFERENCE) != 0; - /* Inherit interfaces */ - zend_do_inherit_interfaces(ce, parent_ce TSRMLS_CC); + znode expr_node; + zend_op *opline; - /* Inherit properties */ - if (parent_ce->default_properties_count) { - int i = ce->default_properties_count + parent_ce->default_properties_count; + if (!expr_ast) { + expr_node.op_type = IS_CONST; + ZVAL_NULL(&expr_node.u.constant); + } else if (by_ref && zend_is_variable(expr_ast) && !zend_is_call(expr_ast)) { + zend_compile_var(&expr_node, expr_ast, BP_VAR_REF TSRMLS_CC); + } else { + zend_compile_expr(&expr_node, expr_ast TSRMLS_CC); + } - ce->default_properties_table = perealloc(ce->default_properties_table, sizeof(void*) * i, ce->type == ZEND_INTERNAL_CLASS); - if (ce->default_properties_count) { - while (i-- > parent_ce->default_properties_count) { - ce->default_properties_table[i] = ce->default_properties_table[i - parent_ce->default_properties_count]; - } - } - for (i = 0; i < parent_ce->default_properties_count; i++) { - ce->default_properties_table[i] = parent_ce->default_properties_table[i]; - if (ce->default_properties_table[i]) { -#ifdef ZTS - if (parent_ce->type != ce->type) { - zval *p; + zend_free_foreach_and_switch_variables(TSRMLS_C); - ALLOC_ZVAL(p); - MAKE_COPY_ZVAL(&ce->default_properties_table[i], p); - ce->default_properties_table[i] = p; - } else { - Z_ADDREF_P(ce->default_properties_table[i]); - } -#else - Z_ADDREF_P(ce->default_properties_table[i]); -#endif - } - } - ce->default_properties_count += parent_ce->default_properties_count; + if (CG(context).in_finally) { + zend_emit_op(NULL, ZEND_DISCARD_EXCEPTION, NULL, NULL TSRMLS_CC); } - if (parent_ce->type != ce->type) { - /* User class extends internal class */ - zend_update_class_constants(parent_ce TSRMLS_CC); - if (parent_ce->default_static_members_count) { - int i = ce->default_static_members_count + parent_ce->default_static_members_count; - - ce->default_static_members_table = erealloc(ce->default_static_members_table, sizeof(void*) * i); - if (ce->default_static_members_count) { - while (i-- > parent_ce->default_static_members_count) { - ce->default_static_members_table[i] = ce->default_static_members_table[i - parent_ce->default_static_members_count]; - } - } - for (i = 0; i < parent_ce->default_static_members_count; i++) { - SEPARATE_ZVAL_TO_MAKE_IS_REF(&CE_STATIC_MEMBERS(parent_ce)[i]); - ce->default_static_members_table[i] = CE_STATIC_MEMBERS(parent_ce)[i]; - Z_ADDREF_P(ce->default_static_members_table[i]); - } - ce->default_static_members_count += parent_ce->default_static_members_count; - ce->static_members_table = ce->default_static_members_table; - } - } else { - if (parent_ce->default_static_members_count) { - int i = ce->default_static_members_count + parent_ce->default_static_members_count; + opline = zend_emit_op(NULL, by_ref ? ZEND_RETURN_BY_REF : ZEND_RETURN, + &expr_node, NULL TSRMLS_CC); - ce->default_static_members_table = perealloc(ce->default_static_members_table, sizeof(void*) * i, ce->type == ZEND_INTERNAL_CLASS); - if (ce->default_static_members_count) { - while (i-- > parent_ce->default_static_members_count) { - ce->default_static_members_table[i] = ce->default_static_members_table[i - parent_ce->default_static_members_count]; - } - } - for (i = 0; i < parent_ce->default_static_members_count; i++) { - SEPARATE_ZVAL_TO_MAKE_IS_REF(&parent_ce->default_static_members_table[i]); - ce->default_static_members_table[i] = parent_ce->default_static_members_table[i]; - Z_ADDREF_P(ce->default_static_members_table[i]); - } - ce->default_static_members_count += parent_ce->default_static_members_count; - if (ce->type == ZEND_USER_CLASS) { - ce->static_members_table = ce->default_static_members_table; - } + if (expr_ast) { + if (zend_is_call(expr_ast)) { + opline->extended_value = ZEND_RETURNS_FUNCTION; + } else if (!zend_is_variable(expr_ast)) { + opline->extended_value = ZEND_RETURNS_VALUE; } } +} +/* }}} */ - for (zend_hash_internal_pointer_reset(&ce->properties_info); - zend_hash_get_current_data(&ce->properties_info, (void *) &property_info) == SUCCESS; - zend_hash_move_forward(&ce->properties_info)) { - if (property_info->ce == ce) { - if (property_info->flags & ZEND_ACC_STATIC) { - property_info->offset += parent_ce->default_static_members_count; - } else { - property_info->offset += parent_ce->default_properties_count; - } - } - } +void zend_compile_echo(zend_ast *ast TSRMLS_DC) /* {{{ */ +{ + zend_ast *expr_ast = ast->child[0]; - zend_hash_merge_ex(&ce->properties_info, &parent_ce->properties_info, (copy_ctor_func_t) (ce->type & ZEND_INTERNAL_CLASS ? zend_duplicate_property_info_internal : zend_duplicate_property_info), sizeof(zend_property_info), (merge_checker_func_t) do_inherit_property_access_check, ce); + znode expr_node; + zend_compile_expr(&expr_node, expr_ast TSRMLS_CC); - zend_hash_merge(&ce->constants_table, &parent_ce->constants_table, zval_property_ctor(parent_ce, ce), NULL, sizeof(zval *), 0); - zend_hash_merge_ex(&ce->function_table, &parent_ce->function_table, (copy_ctor_func_t) do_inherit_method, sizeof(zend_function), (merge_checker_func_t) do_inherit_method_check, ce); - do_inherit_parent_constructor(ce); + zend_emit_op(NULL, ZEND_ECHO, &expr_node, NULL TSRMLS_CC); +} +/* }}} */ - if (ce->ce_flags & ZEND_ACC_IMPLICIT_ABSTRACT_CLASS && ce->type == ZEND_INTERNAL_CLASS) { - ce->ce_flags |= ZEND_ACC_EXPLICIT_ABSTRACT_CLASS; - } else if (!(ce->ce_flags & (ZEND_ACC_IMPLEMENT_INTERFACES|ZEND_ACC_IMPLEMENT_TRAITS))) { - /* The verification will be done in runtime by ZEND_VERIFY_ABSTRACT_CLASS */ - zend_verify_abstract_class(ce TSRMLS_CC); - } - ce->ce_flags |= parent_ce->ce_flags & ZEND_HAS_STATIC_IN_METHODS; +void zend_compile_throw(zend_ast *ast TSRMLS_DC) /* {{{ */ +{ + zend_ast *expr_ast = ast->child[0]; + + znode expr_node; + zend_compile_expr(&expr_node, expr_ast TSRMLS_CC); + + zend_emit_op(NULL, ZEND_THROW, &expr_node, NULL TSRMLS_CC); } /* }}} */ -static zend_bool do_inherit_constant_check(HashTable *child_constants_table, const zval **parent_constant, const zend_hash_key *hash_key, const zend_class_entry *iface) /* {{{ */ +void zend_compile_break_continue(zend_ast *ast TSRMLS_DC) /* {{{ */ { - zval **old_constant; + zend_ast *depth_ast = ast->child[0]; + + znode depth_node; + zend_op *opline; + + ZEND_ASSERT(ast->kind == ZEND_AST_BREAK || ast->kind == ZEND_AST_CONTINUE); - if (zend_hash_quick_find(child_constants_table, hash_key->arKey, hash_key->nKeyLength, hash_key->h, (void**)&old_constant) == SUCCESS) { - if (*old_constant != *parent_constant) { - zend_error(E_COMPILE_ERROR, "Cannot inherit previously-inherited or override constant %s from interface %s", hash_key->arKey, iface->name); + if (depth_ast) { + if (depth_ast->kind != ZEND_AST_ZVAL) { + zend_error_noreturn(E_COMPILE_ERROR, "'%s' operator with non-constant operand " + "is no longer supported", ast->kind == ZEND_AST_BREAK ? "break" : "continue"); } - return 0; + + zend_compile_expr(&depth_node, depth_ast TSRMLS_CC); + + if (Z_TYPE(depth_node.u.constant) != IS_LONG || Z_LVAL(depth_node.u.constant) < 1) { + zend_error_noreturn(E_COMPILE_ERROR, "'%s' operator accepts only positive numbers", + ast->kind == ZEND_AST_BREAK ? "break" : "continue"); + } + } else { + depth_node.op_type = IS_CONST; + ZVAL_LONG(&depth_node.u.constant, 1); } - return 1; + + opline = zend_emit_op(NULL, ast->kind == ZEND_AST_BREAK ? ZEND_BRK : ZEND_CONT, + NULL, &depth_node TSRMLS_CC); + opline->op1.opline_num = CG(context).current_brk_cont; } /* }}} */ -static int do_interface_constant_check(zval **val TSRMLS_DC, int num_args, va_list args, const zend_hash_key *key) /* {{{ */ +void zend_compile_goto(zend_ast *ast TSRMLS_DC) /* {{{ */ { - zend_class_entry **iface = va_arg(args, zend_class_entry**); - - do_inherit_constant_check(&(*iface)->constants_table, (const zval **) val, key, *iface); + zend_ast *label_ast = ast->child[0]; + znode label_node; + zend_op *opline; - return ZEND_HASH_APPLY_KEEP; + zend_compile_expr(&label_node, label_ast TSRMLS_CC); + opline = zend_emit_op(NULL, ZEND_GOTO, NULL, &label_node TSRMLS_CC); + opline->extended_value = CG(context).current_brk_cont; + zend_resolve_goto_label(CG(active_op_array), opline, 0 TSRMLS_CC); } /* }}} */ -ZEND_API void zend_do_implement_interface(zend_class_entry *ce, zend_class_entry *iface TSRMLS_DC) /* {{{ */ +void zend_compile_label(zend_ast *ast TSRMLS_DC) /* {{{ */ { - zend_uint i, ignore = 0; - zend_uint current_iface_num = ce->num_interfaces; - zend_uint parent_iface_num = ce->parent ? ce->parent->num_interfaces : 0; + zend_string *label = zend_ast_get_str(ast->child[0]); + zend_label dest; - for (i = 0; i < ce->num_interfaces; i++) { - if (ce->interfaces[i] == NULL) { - memmove(ce->interfaces + i, ce->interfaces + i + 1, sizeof(zend_class_entry*) * (--ce->num_interfaces - i)); - i--; - } else if (ce->interfaces[i] == iface) { - if (i < parent_iface_num) { - ignore = 1; - } else { - zend_error(E_COMPILE_ERROR, "Class %s cannot implement previously implemented interface %s", ce->name, iface->name); - } - } + if (!CG(context).labels) { + ALLOC_HASHTABLE(CG(context).labels); + zend_hash_init(CG(context).labels, 8, NULL, ptr_dtor, 0); } - if (ignore) { - /* Check for attempt to redeclare interface constants */ - zend_hash_apply_with_arguments(&ce->constants_table TSRMLS_CC, (apply_func_args_t) do_interface_constant_check, 1, &iface); - } else { - if (ce->num_interfaces >= current_iface_num) { - if (ce->type == ZEND_INTERNAL_CLASS) { - ce->interfaces = (zend_class_entry **) realloc(ce->interfaces, sizeof(zend_class_entry *) * (++current_iface_num)); - } else { - ce->interfaces = (zend_class_entry **) erealloc(ce->interfaces, sizeof(zend_class_entry *) * (++current_iface_num)); - } - } - ce->interfaces[ce->num_interfaces++] = iface; - zend_hash_merge_ex(&ce->constants_table, &iface->constants_table, (copy_ctor_func_t) zval_add_ref, sizeof(zval *), (merge_checker_func_t) do_inherit_constant_check, iface); - zend_hash_merge_ex(&ce->function_table, &iface->function_table, (copy_ctor_func_t) do_inherit_method, sizeof(zend_function), (merge_checker_func_t) do_inherit_method_check, ce); + dest.brk_cont = CG(context).current_brk_cont; + dest.opline_num = get_next_op_number(CG(active_op_array)); - do_implement_interface(ce, iface TSRMLS_CC); - zend_do_inherit_interfaces(ce, iface TSRMLS_CC); + if (!zend_hash_add_mem(CG(context).labels, label, &dest, sizeof(zend_label))) { + zend_error_noreturn(E_COMPILE_ERROR, "Label '%s' already defined", label->val); } } /* }}} */ -ZEND_API void zend_do_implement_trait(zend_class_entry *ce, zend_class_entry *trait TSRMLS_DC) /* {{{ */ +void zend_compile_while(zend_ast *ast TSRMLS_DC) /* {{{ */ { - zend_uint i, ignore = 0; - zend_uint current_trait_num = ce->num_traits; - zend_uint parent_trait_num = ce->parent ? ce->parent->num_traits : 0; + zend_ast *cond_ast = ast->child[0]; + zend_ast *stmt_ast = ast->child[1]; - for (i = 0; i < ce->num_traits; i++) { - if (ce->traits[i] == NULL) { - memmove(ce->traits + i, ce->traits + i + 1, sizeof(zend_class_entry*) * (--ce->num_traits - i)); - i--; - } else if (ce->traits[i] == trait) { - if (i < parent_trait_num) { - ignore = 1; - } - } - } - if (!ignore) { - if (ce->num_traits >= current_trait_num) { - if (ce->type == ZEND_INTERNAL_CLASS) { - ce->traits = (zend_class_entry **) realloc(ce->traits, sizeof(zend_class_entry *) * (++current_trait_num)); - } else { - ce->traits = (zend_class_entry **) erealloc(ce->traits, sizeof(zend_class_entry *) * (++current_trait_num)); - } - } - ce->traits[ce->num_traits++] = trait; - } + znode cond_node; + uint32_t opnum_start, opnum_jmpz; + + opnum_start = get_next_op_number(CG(active_op_array)); + zend_compile_expr(&cond_node, cond_ast TSRMLS_CC); + + opnum_jmpz = zend_emit_cond_jump(ZEND_JMPZ, &cond_node, 0 TSRMLS_CC); + zend_begin_loop(TSRMLS_C); + + zend_compile_stmt(stmt_ast TSRMLS_CC); + + zend_emit_jump(opnum_start TSRMLS_CC); + + zend_update_jump_target_to_next(opnum_jmpz TSRMLS_CC); + + zend_end_loop(opnum_start, 0 TSRMLS_CC); } /* }}} */ -static zend_bool zend_traits_method_compatibility_check(zend_function *fn, zend_function *other_fn TSRMLS_DC) /* {{{ */ +void zend_compile_do_while(zend_ast *ast TSRMLS_DC) /* {{{ */ { - zend_uint fn_flags = fn->common.scope->ce_flags; - zend_uint other_flags = other_fn->common.scope->ce_flags; + zend_ast *stmt_ast = ast->child[0]; + zend_ast *cond_ast = ast->child[1]; + + znode cond_node; + uint32_t opnum_start, opnum_cond; + + zend_begin_loop(TSRMLS_C); + + opnum_start = get_next_op_number(CG(active_op_array)); + zend_compile_stmt(stmt_ast TSRMLS_CC); - return zend_do_perform_implementation_check(fn, other_fn TSRMLS_CC) - && ((other_fn->common.scope->ce_flags & ZEND_ACC_INTERFACE) || zend_do_perform_implementation_check(other_fn, fn TSRMLS_CC)) - && ((fn_flags & (ZEND_ACC_FINAL|ZEND_ACC_STATIC)) == - (other_flags & (ZEND_ACC_FINAL|ZEND_ACC_STATIC))); /* equal final and static qualifier */ + opnum_cond = get_next_op_number(CG(active_op_array)); + zend_compile_expr(&cond_node, cond_ast TSRMLS_CC); + + zend_emit_cond_jump(ZEND_JMPNZ, &cond_node, opnum_start TSRMLS_CC); + + zend_end_loop(opnum_cond, 0 TSRMLS_CC); } /* }}} */ -static void zend_add_magic_methods(zend_class_entry* ce, const char* mname, uint mname_len, zend_function* fe TSRMLS_DC) /* {{{ */ +void zend_compile_expr_list(znode *result, zend_ast *ast TSRMLS_DC) /* {{{ */ { - if (!strncmp(mname, ZEND_CLONE_FUNC_NAME, mname_len)) { - ce->clone = fe; fe->common.fn_flags |= ZEND_ACC_CLONE; - } else if (!strncmp(mname, ZEND_CONSTRUCTOR_FUNC_NAME, mname_len)) { - if (ce->constructor) { - zend_error(E_COMPILE_ERROR, "%s has colliding constructor definitions coming from traits", ce->name); - } - ce->constructor = fe; fe->common.fn_flags |= ZEND_ACC_CTOR; - } else if (!strncmp(mname, ZEND_DESTRUCTOR_FUNC_NAME, mname_len)) { - ce->destructor = fe; fe->common.fn_flags |= ZEND_ACC_DTOR; - } else if (!strncmp(mname, ZEND_GET_FUNC_NAME, mname_len)) { - ce->__get = fe; - } else if (!strncmp(mname, ZEND_SET_FUNC_NAME, mname_len)) { - ce->__set = fe; - } else if (!strncmp(mname, ZEND_CALL_FUNC_NAME, mname_len)) { - ce->__call = fe; - } else if (!strncmp(mname, ZEND_UNSET_FUNC_NAME, mname_len)) { - ce->__unset = fe; - } else if (!strncmp(mname, ZEND_ISSET_FUNC_NAME, mname_len)) { - ce->__isset = fe; - } else if (!strncmp(mname, ZEND_CALLSTATIC_FUNC_NAME, mname_len)) { - ce->__callstatic = fe; - } else if (!strncmp(mname, ZEND_TOSTRING_FUNC_NAME, mname_len)) { - ce->__tostring = fe; - } else if (ce->name_length + 1 == mname_len) { - char *lowercase_name = emalloc(ce->name_length + 1); - zend_str_tolower_copy(lowercase_name, ce->name, ce->name_length); - lowercase_name = (char*)zend_new_interned_string(lowercase_name, ce->name_length + 1, 1 TSRMLS_CC); - if (!memcmp(mname, lowercase_name, mname_len)) { - if (ce->constructor) { - zend_error(E_COMPILE_ERROR, "%s has colliding constructor definitions coming from traits", ce->name); - } - ce->constructor = fe; - fe->common.fn_flags |= ZEND_ACC_CTOR; - } - str_efree(lowercase_name); + zend_ast_list *list; + uint32_t i; + + result->op_type = IS_CONST; + ZVAL_TRUE(&result->u.constant); + + if (!ast) { + return; + } + + list = zend_ast_get_list(ast); + for (i = 0; i < list->children; ++i) { + zend_ast *expr_ast = list->child[i]; + + zend_do_free(result TSRMLS_CC); + zend_compile_expr(result, expr_ast TSRMLS_CC); } } /* }}} */ -static void zend_add_trait_method(zend_class_entry *ce, const char *name, const char *arKey, uint nKeyLength, zend_function *fn, HashTable **overriden TSRMLS_DC) /* {{{ */ +void zend_compile_for(zend_ast *ast TSRMLS_DC) /* {{{ */ { - zend_function *existing_fn = NULL; - ulong h = zend_hash_func(arKey, nKeyLength); + zend_ast *init_ast = ast->child[0]; + zend_ast *cond_ast = ast->child[1]; + zend_ast *loop_ast = ast->child[2]; + zend_ast *stmt_ast = ast->child[3]; - if (zend_hash_quick_find(&ce->function_table, arKey, nKeyLength, h, (void**) &existing_fn) == SUCCESS) { - if (existing_fn->common.scope == ce) { - /* members from the current class override trait methods */ - /* use temporary *overriden HashTable to detect hidden conflict */ - if (*overriden) { - if (zend_hash_quick_find(*overriden, arKey, nKeyLength, h, (void**) &existing_fn) == SUCCESS) { - if (existing_fn->common.fn_flags & ZEND_ACC_ABSTRACT) { - /* Make sure the trait method is compatible with previosly declared abstract method */ - if (!zend_traits_method_compatibility_check(fn, existing_fn TSRMLS_CC)) { - zend_error(E_COMPILE_ERROR, "Declaration of %s must be compatible with %s", - zend_get_function_declaration(fn TSRMLS_CC), - zend_get_function_declaration(existing_fn TSRMLS_CC)); - } - } else if (fn->common.fn_flags & ZEND_ACC_ABSTRACT) { - /* Make sure the abstract declaration is compatible with previous declaration */ - if (!zend_traits_method_compatibility_check(existing_fn, fn TSRMLS_CC)) { - zend_error(E_COMPILE_ERROR, "Declaration of %s must be compatible with %s", - zend_get_function_declaration(fn TSRMLS_CC), - zend_get_function_declaration(existing_fn TSRMLS_CC)); - } - return; - } - } - } else { - ALLOC_HASHTABLE(*overriden); - zend_hash_init_ex(*overriden, 2, NULL, NULL, 0, 0); - } - zend_hash_quick_update(*overriden, arKey, nKeyLength, h, fn, sizeof(zend_function), (void**)&fn); - return; - } else if (existing_fn->common.fn_flags & ZEND_ACC_ABSTRACT) { - /* Make sure the trait method is compatible with previosly declared abstract method */ - if (!zend_traits_method_compatibility_check(fn, existing_fn TSRMLS_CC)) { - zend_error(E_COMPILE_ERROR, "Declaration of %s must be compatible with %s", - zend_get_function_declaration(fn TSRMLS_CC), - zend_get_function_declaration(existing_fn TSRMLS_CC)); - } - } else if (fn->common.fn_flags & ZEND_ACC_ABSTRACT) { - /* Make sure the abstract declaration is compatible with previous declaration */ - if (!zend_traits_method_compatibility_check(existing_fn, fn TSRMLS_CC)) { - zend_error(E_COMPILE_ERROR, "Declaration of %s must be compatible with %s", - zend_get_function_declaration(fn TSRMLS_CC), - zend_get_function_declaration(existing_fn TSRMLS_CC)); - } - return; - } else if ((existing_fn->common.scope->ce_flags & ZEND_ACC_TRAIT) == ZEND_ACC_TRAIT) { - /* two trais can't define the same non-abstract method */ -#if 1 - zend_error(E_COMPILE_ERROR, "Trait method %s has not been applied, because there are collisions with other trait methods on %s", - name, ce->name); -#else /* TODO: better errot message */ - zend_error(E_COMPILE_ERROR, "Trait method %s::%s has not been applied as %s::%s, because of collision with %s::%s", - fn->common.scope->name, fn->common.function_name, - ce->name, name, - existing_fn->common.scope->name, existing_fn->common.function_name); -#endif - } else { - /* inherited members are overridden by members inserted by traits */ - /* check whether the trait method fulfills the inheritance requirements */ - do_inheritance_check_on_method(fn, existing_fn TSRMLS_CC); - } - } + znode result; + uint32_t opnum_cond, opnum_jmpz, opnum_loop; + + zend_compile_expr_list(&result, init_ast TSRMLS_CC); + zend_do_free(&result TSRMLS_CC); + + opnum_cond = get_next_op_number(CG(active_op_array)); + zend_compile_expr_list(&result, cond_ast TSRMLS_CC); + zend_do_extended_info(TSRMLS_C); + + opnum_jmpz = zend_emit_cond_jump(ZEND_JMPZ, &result, 0 TSRMLS_CC); + zend_begin_loop(TSRMLS_C); + + zend_compile_stmt(stmt_ast TSRMLS_CC); + + opnum_loop = get_next_op_number(CG(active_op_array)); + zend_compile_expr_list(&result, loop_ast TSRMLS_CC); + zend_do_free(&result TSRMLS_CC); + + zend_emit_jump(opnum_cond TSRMLS_CC); - function_add_ref(fn); - zend_hash_quick_update(&ce->function_table, arKey, nKeyLength, h, fn, sizeof(zend_function), (void**)&fn); - zend_add_magic_methods(ce, arKey, nKeyLength, fn TSRMLS_CC); + zend_update_jump_target_to_next(opnum_jmpz TSRMLS_CC); + + zend_end_loop(opnum_loop, 0 TSRMLS_CC); } /* }}} */ -static int zend_fixup_trait_method(zend_function *fn, zend_class_entry *ce TSRMLS_DC) /* {{{ */ +void zend_compile_foreach(zend_ast *ast TSRMLS_DC) /* {{{ */ { - if ((fn->common.scope->ce_flags & ZEND_ACC_TRAIT) == ZEND_ACC_TRAIT) { + zend_ast *expr_ast = ast->child[0]; + zend_ast *value_ast = ast->child[1]; + zend_ast *key_ast = ast->child[2]; + zend_ast *stmt_ast = ast->child[3]; + zend_bool by_ref = value_ast->kind == ZEND_AST_REF; + zend_bool is_variable = zend_is_variable(expr_ast) && !zend_is_call(expr_ast) + && zend_can_write_to_variable(expr_ast); - fn->common.scope = ce; + znode expr_node, reset_node, value_node, key_node; + zend_op *opline; + uint32_t opnum_reset, opnum_fetch; - if (fn->common.fn_flags & ZEND_ACC_ABSTRACT) { - ce->ce_flags |= ZEND_ACC_IMPLICIT_ABSTRACT_CLASS; + if (key_ast) { + if (key_ast->kind == ZEND_AST_REF) { + zend_error_noreturn(E_COMPILE_ERROR, "Key element cannot be a reference"); } - if (fn->op_array.static_variables) { - ce->ce_flags |= ZEND_HAS_STATIC_IN_METHODS; + if (key_ast->kind == ZEND_AST_LIST) { + zend_error_noreturn(E_COMPILE_ERROR, "Cannot use list as key element"); } } - return ZEND_HASH_APPLY_KEEP; -} -/* }}} */ -static int zend_traits_copy_functions(zend_function *fn TSRMLS_DC, int num_args, va_list args, zend_hash_key *hash_key) /* {{{ */ -{ - zend_class_entry *ce; - HashTable **overriden; - zend_trait_alias *alias, **alias_ptr; - HashTable *exclude_table; - char *lcname; - unsigned int fnname_len; - zend_function fn_copy; - void *dummy; + if (by_ref) { + value_ast = value_ast->child[0]; + } - ce = va_arg(args, zend_class_entry*); - overriden = va_arg(args, HashTable**); - exclude_table = va_arg(args, HashTable*); + if (by_ref && is_variable) { + zend_compile_var(&expr_node, expr_ast, BP_VAR_W TSRMLS_CC); + } else { + zend_compile_expr(&expr_node, expr_ast TSRMLS_CC); + } - fnname_len = hash_key->nKeyLength - 1; + if (by_ref) { + zend_separate_if_call_and_write(&expr_node, expr_ast, BP_VAR_W TSRMLS_CC); + } - /* apply aliases which are qualified with a class name, there should not be any ambiguity */ - if (ce->trait_aliases) { - alias_ptr = ce->trait_aliases; - alias = *alias_ptr; - while (alias) { - /* Scope unset or equal to the function we compare to, and the alias applies to fn */ - if (alias->alias != NULL - && (!alias->trait_method->ce || fn->common.scope == alias->trait_method->ce) - && alias->trait_method->mname_len == fnname_len - && (zend_binary_strcasecmp(alias->trait_method->method_name, alias->trait_method->mname_len, hash_key->arKey, fnname_len) == 0)) { - fn_copy = *fn; + opnum_reset = get_next_op_number(CG(active_op_array)); + opline = zend_emit_op(&reset_node, ZEND_FE_RESET, &expr_node, NULL TSRMLS_CC); + if (by_ref && is_variable) { + opline->extended_value = ZEND_FE_FETCH_BYREF; + } - /* if it is 0, no modifieres has been changed */ - if (alias->modifiers) { - fn_copy.common.fn_flags = alias->modifiers | (fn->common.fn_flags ^ (fn->common.fn_flags & ZEND_ACC_PPP_MASK)); - } + zend_stack_push(&CG(loop_var_stack), &reset_node); - lcname = zend_str_tolower_dup(alias->alias, alias->alias_len); - zend_add_trait_method(ce, alias->alias, lcname, alias->alias_len+1, &fn_copy, overriden TSRMLS_CC); - efree(lcname); + opnum_fetch = get_next_op_number(CG(active_op_array)); + opline = zend_emit_op(&value_node, ZEND_FE_FETCH, &reset_node, NULL TSRMLS_CC); + if (by_ref) { + opline->extended_value |= ZEND_FE_FETCH_BYREF; + } + if (key_ast) { + opline->extended_value |= ZEND_FE_FETCH_WITH_KEY; + } - /* Record the trait from which this alias was resolved. */ - if (!alias->trait_method->ce) { - alias->trait_method->ce = fn->common.scope; - } - } - alias_ptr++; - alias = *alias_ptr; - } + opline = zend_emit_op(NULL, ZEND_OP_DATA, NULL, NULL TSRMLS_CC); + + /* Allocate enough space to keep HashPointer on VM stack */ + opline->op1_type = IS_TMP_VAR; + opline->op1.var = get_temporary_variable(CG(active_op_array)); + if (sizeof(HashPointer) > sizeof(zval)) { + /* Make sure 1 zval is enough for HashPointer (2 must be enough) */ + get_temporary_variable(CG(active_op_array)); } - lcname = (char *) hash_key->arKey; + if (key_ast) { + zend_make_tmp_result(&key_node, opline TSRMLS_CC); + } - if (exclude_table == NULL || zend_hash_find(exclude_table, lcname, fnname_len, &dummy) == FAILURE) { - /* is not in hashtable, thus, function is not to be excluded */ - fn_copy = *fn; + if (by_ref) { + zend_emit_assign_ref_znode(value_ast, &value_node TSRMLS_CC); + } else { + zend_emit_assign_znode(value_ast, &value_node TSRMLS_CC); + } - /* apply aliases which have not alias name, just setting visibility */ - if (ce->trait_aliases) { - alias_ptr = ce->trait_aliases; - alias = *alias_ptr; - while (alias) { - /* Scope unset or equal to the function we compare to, and the alias applies to fn */ - if (alias->alias == NULL && alias->modifiers != 0 - && (!alias->trait_method->ce || fn->common.scope == alias->trait_method->ce) - && (alias->trait_method->mname_len == fnname_len) - && (zend_binary_strcasecmp(alias->trait_method->method_name, alias->trait_method->mname_len, lcname, fnname_len) == 0)) { + if (key_ast) { + zend_emit_assign_znode(key_ast, &key_node TSRMLS_CC); + } - fn_copy.common.fn_flags = alias->modifiers | (fn->common.fn_flags ^ (fn->common.fn_flags & ZEND_ACC_PPP_MASK)); + zend_begin_loop(TSRMLS_C); - /** Record the trait from which this alias was resolved. */ - if (!alias->trait_method->ce) { - alias->trait_method->ce = fn->common.scope; - } - } - alias_ptr++; - alias = *alias_ptr; - } - } + zend_compile_stmt(stmt_ast TSRMLS_CC); - zend_add_trait_method(ce, fn->common.function_name, lcname, fnname_len+1, &fn_copy, overriden TSRMLS_CC); - } + zend_emit_jump(opnum_fetch TSRMLS_CC); + + opline = &CG(active_op_array)->opcodes[opnum_reset]; + opline->op2.opline_num = get_next_op_number(CG(active_op_array)); + + opline = &CG(active_op_array)->opcodes[opnum_fetch]; + opline->op2.opline_num = get_next_op_number(CG(active_op_array)); + + zend_end_loop(opnum_fetch, 1 TSRMLS_CC); - return ZEND_HASH_APPLY_KEEP; + generate_free_loop_var(&reset_node TSRMLS_CC); + zend_stack_del_top(&CG(loop_var_stack)); } /* }}} */ -static void zend_check_trait_usage(zend_class_entry *ce, zend_class_entry *trait TSRMLS_DC) /* {{{ */ +void zend_compile_if(zend_ast *ast TSRMLS_DC) /* {{{ */ { - zend_uint i; + zend_ast_list *list = zend_ast_get_list(ast); + uint32_t i; + uint32_t *jmp_opnums; + + if (list->children > 1) { + jmp_opnums = safe_emalloc(sizeof(uint32_t), list->children - 1, 0); + } + + for (i = 0; i < list->children; ++i) { + zend_ast *elem_ast = list->child[i]; + zend_ast *cond_ast = elem_ast->child[0]; + zend_ast *stmt_ast = elem_ast->child[1]; - if ((trait->ce_flags & ZEND_ACC_TRAIT) != ZEND_ACC_TRAIT) { - zend_error(E_COMPILE_ERROR, "Class %s is not a trait, Only traits may be used in 'as' and 'insteadof' statements", trait->name); + znode cond_node; + uint32_t opnum_jmpz; + if (cond_ast) { + zend_compile_expr(&cond_node, cond_ast TSRMLS_CC); + opnum_jmpz = zend_emit_cond_jump(ZEND_JMPZ, &cond_node, 0 TSRMLS_CC); + } + + zend_compile_stmt(stmt_ast TSRMLS_CC); + + if (i != list->children - 1) { + jmp_opnums[i] = zend_emit_jump(0 TSRMLS_CC); + } + + if (cond_ast) { + zend_update_jump_target_to_next(opnum_jmpz TSRMLS_CC); + } } - for (i = 0; i < ce->num_traits; i++) { - if (ce->traits[i] == trait) { - return; + if (list->children > 1) { + for (i = 0; i < list->children - 1; ++i) { + zend_update_jump_target_to_next(jmp_opnums[i] TSRMLS_CC); } + efree(jmp_opnums); } - zend_error(E_COMPILE_ERROR, "Required Trait %s wasn't added to %s", trait->name, ce->name); } /* }}} */ -static void zend_traits_init_trait_structures(zend_class_entry *ce TSRMLS_DC) /* {{{ */ +void zend_compile_switch(zend_ast *ast TSRMLS_DC) /* {{{ */ { - size_t i, j = 0; - zend_trait_precedence *cur_precedence; - zend_trait_method_reference *cur_method_ref; - char *lcname; - zend_bool method_exists; + zend_ast *expr_ast = ast->child[0]; + zend_ast_list *cases = zend_ast_get_list(ast->child[1]); - /* resolve class references */ - if (ce->trait_precedences) { - i = 0; - while ((cur_precedence = ce->trait_precedences[i])) { - /** Resolve classes for all precedence operations. */ - if (cur_precedence->exclude_from_classes) { - cur_method_ref = cur_precedence->trait_method; - if (!(cur_precedence->trait_method->ce = zend_fetch_class(cur_method_ref->class_name, cur_method_ref->cname_len, - ZEND_FETCH_CLASS_TRAIT|ZEND_FETCH_CLASS_NO_AUTOLOAD TSRMLS_CC))) { - zend_error(E_COMPILE_ERROR, "Could not find trait %s", cur_method_ref->class_name); - } - zend_check_trait_usage(ce, cur_precedence->trait_method->ce TSRMLS_CC); - - /** Ensure that the prefered method is actually available. */ - lcname = zend_str_tolower_dup(cur_method_ref->method_name, - cur_method_ref->mname_len); - method_exists = zend_hash_exists(&cur_method_ref->ce->function_table, - lcname, - cur_method_ref->mname_len + 1); - efree(lcname); - if (!method_exists) { - zend_error(E_COMPILE_ERROR, - "A precedence rule was defined for %s::%s but this method does not exist", - cur_method_ref->ce->name, - cur_method_ref->method_name); - } + uint32_t i; + zend_bool has_default_case = 0; - /** With the other traits, we are more permissive. - We do not give errors for those. This allows to be more - defensive in such definitions. - However, we want to make sure that the insteadof declaration - is consistent in itself. - */ - j = 0; - while (cur_precedence->exclude_from_classes[j]) { - char* class_name = (char*)cur_precedence->exclude_from_classes[j]; - zend_uint name_length = strlen(class_name); - - if (!(cur_precedence->exclude_from_classes[j] = zend_fetch_class(class_name, name_length, ZEND_FETCH_CLASS_TRAIT |ZEND_FETCH_CLASS_NO_AUTOLOAD TSRMLS_CC))) { - zend_error(E_COMPILE_ERROR, "Could not find trait %s", class_name); - } - zend_check_trait_usage(ce, cur_precedence->exclude_from_classes[j] TSRMLS_CC); - - /* make sure that the trait method is not from a class mentioned in - exclude_from_classes, for consistency */ - if (cur_precedence->trait_method->ce == cur_precedence->exclude_from_classes[i]) { - zend_error(E_COMPILE_ERROR, - "Inconsistent insteadof definition. " - "The method %s is to be used from %s, but %s is also on the exclude list", - cur_method_ref->method_name, - cur_precedence->trait_method->ce->name, - cur_precedence->trait_method->ce->name); - } + znode expr_node, case_node; + zend_op *opline; + uint32_t *jmpnz_opnums = safe_emalloc(sizeof(uint32_t), cases->children, 0); + uint32_t opnum_default_jmp; - efree(class_name); - j++; - } + zend_compile_expr(&expr_node, expr_ast TSRMLS_CC); + + zend_stack_push(&CG(loop_var_stack), &expr_node); + + zend_begin_loop(TSRMLS_C); + + case_node.op_type = IS_TMP_VAR; + case_node.u.op.var = get_temporary_variable(CG(active_op_array)); + + for (i = 0; i < cases->children; ++i) { + zend_ast *case_ast = cases->child[i]; + zend_ast *cond_ast = case_ast->child[0]; + znode cond_node; + + if (!cond_ast) { + if (has_default_case) { + CG(zend_lineno) = case_ast->lineno; + zend_error_noreturn(E_COMPILE_ERROR, + "Switch statements may only contain one default clause"); } - i++; + has_default_case = 1; + continue; + } + + zend_compile_expr(&cond_node, cond_ast TSRMLS_CC); + + opline = zend_emit_op(NULL, ZEND_CASE, &expr_node, &cond_node TSRMLS_CC); + SET_NODE(opline->result, &case_node); + if (opline->op1_type == IS_CONST) { + zval_copy_ctor(&CONSTANT(opline->op1.constant)); } + + jmpnz_opnums[i] = zend_emit_cond_jump(ZEND_JMPNZ, &case_node, 0 TSRMLS_CC); } - if (ce->trait_aliases) { - i = 0; - while (ce->trait_aliases[i]) { - /** For all aliases with an explicit class name, resolve the class now. */ - if (ce->trait_aliases[i]->trait_method->class_name) { - cur_method_ref = ce->trait_aliases[i]->trait_method; - if (!(cur_method_ref->ce = zend_fetch_class(cur_method_ref->class_name, cur_method_ref->cname_len, ZEND_FETCH_CLASS_TRAIT|ZEND_FETCH_CLASS_NO_AUTOLOAD TSRMLS_CC))) { - zend_error(E_COMPILE_ERROR, "Could not find trait %s", cur_method_ref->class_name); - } - zend_check_trait_usage(ce, cur_method_ref->ce TSRMLS_CC); + opnum_default_jmp = zend_emit_jump(0 TSRMLS_CC); - /** And, ensure that the referenced method is resolvable, too. */ - lcname = zend_str_tolower_dup(cur_method_ref->method_name, - cur_method_ref->mname_len); - method_exists = zend_hash_exists(&cur_method_ref->ce->function_table, - lcname, cur_method_ref->mname_len + 1); - efree(lcname); + for (i = 0; i < cases->children; ++i) { + zend_ast *case_ast = cases->child[i]; + zend_ast *cond_ast = case_ast->child[0]; + zend_ast *stmt_ast = case_ast->child[1]; - if (!method_exists) { - zend_error(E_COMPILE_ERROR, "An alias was defined for %s::%s but this method does not exist", cur_method_ref->ce->name, cur_method_ref->method_name); - } - } - i++; + if (cond_ast) { + zend_update_jump_target_to_next(jmpnz_opnums[i] TSRMLS_CC); + } else { + zend_update_jump_target_to_next(opnum_default_jmp TSRMLS_CC); } + + zend_compile_stmt(stmt_ast TSRMLS_CC); + } + + if (!has_default_case) { + zend_update_jump_target_to_next(opnum_default_jmp TSRMLS_CC); } + + zend_end_loop(get_next_op_number(CG(active_op_array)), 1 TSRMLS_CC); + + if (expr_node.op_type == IS_VAR || expr_node.op_type == IS_TMP_VAR) { + zend_emit_op(NULL, ZEND_FREE, + &expr_node, NULL TSRMLS_CC); + } else if (expr_node.op_type == IS_CONST) { + zval_dtor(&expr_node.u.constant); + } + + zend_stack_del_top(&CG(loop_var_stack)); + efree(jmpnz_opnums); } /* }}} */ -static void zend_traits_compile_exclude_table(HashTable* exclude_table, zend_trait_precedence **precedences, zend_class_entry *trait) /* {{{ */ +void zend_compile_try(zend_ast *ast TSRMLS_DC) /* {{{ */ { - size_t i = 0, j; + zend_ast *try_ast = ast->child[0]; + zend_ast_list *catches = zend_ast_get_list(ast->child[1]); + zend_ast *finally_ast = ast->child[2]; - if (!precedences) { - return; + uint32_t i; + zend_op *opline; + uint32_t try_catch_offset = zend_add_try_element( + get_next_op_number(CG(active_op_array)) TSRMLS_CC); + uint32_t *jmp_opnums = safe_emalloc(sizeof(uint32_t), catches->children, 0); + + if (catches->children == 0 && !finally_ast) { + zend_error_noreturn(E_COMPILE_ERROR, "Cannot use try without catch or finally"); } - while (precedences[i]) { - if (precedences[i]->exclude_from_classes) { - j = 0; - while (precedences[i]->exclude_from_classes[j]) { - if (precedences[i]->exclude_from_classes[j] == trait) { - zend_uint lcname_len = precedences[i]->trait_method->mname_len; - char *lcname = zend_str_tolower_dup(precedences[i]->trait_method->method_name, lcname_len); - - if (zend_hash_add(exclude_table, lcname, lcname_len, NULL, 0, NULL) == FAILURE) { - efree(lcname); - zend_error(E_COMPILE_ERROR, "Failed to evaluate a trait precedence (%s). Method of trait %s was defined to be excluded multiple times", precedences[i]->trait_method->method_name, trait->name); - } - efree(lcname); - } - ++j; - } - } - ++i; + + zend_compile_stmt(try_ast TSRMLS_CC); + + if (catches->children != 0) { + jmp_opnums[0] = zend_emit_jump(0 TSRMLS_CC); } -} -/* }}} */ -static void zend_do_traits_method_binding(zend_class_entry *ce TSRMLS_DC) /* {{{ */ -{ - zend_uint i; - HashTable *overriden = NULL; + for (i = 0; i < catches->children; ++i) { + zend_ast *catch_ast = catches->child[i]; + zend_ast *class_ast = catch_ast->child[0]; + zend_ast *var_ast = catch_ast->child[1]; + zend_ast *stmt_ast = catch_ast->child[2]; + zval *var_name = zend_ast_get_zval(var_ast); + zend_bool is_last_catch = (i + 1 == catches->children); - for (i = 0; i < ce->num_traits; i++) { - if (ce->trait_precedences) { - HashTable exclude_table; + uint32_t opnum_catch; - /* TODO: revisit this start size, may be its not optimal */ - zend_hash_init_ex(&exclude_table, 2, NULL, NULL, 0, 0); + if (!zend_is_const_default_class_ref(class_ast)) { + zend_error_noreturn(E_COMPILE_ERROR, "Bad class name in the catch statement"); + } - zend_traits_compile_exclude_table(&exclude_table, ce->trait_precedences, ce->traits[i]); + opnum_catch = get_next_op_number(CG(active_op_array)); + if (i == 0) { + CG(active_op_array)->try_catch_array[try_catch_offset].catch_op = opnum_catch; + } - /* copies functions, applies defined aliasing, and excludes unused trait methods */ - zend_hash_apply_with_arguments(&ce->traits[i]->function_table TSRMLS_CC, (apply_func_args_t)zend_traits_copy_functions, 3, ce, &overriden, &exclude_table); + CG(zend_lineno) = catch_ast->lineno; - zend_hash_destroy(&exclude_table); - } else { - zend_hash_apply_with_arguments(&ce->traits[i]->function_table TSRMLS_CC, (apply_func_args_t)zend_traits_copy_functions, 3, ce, &overriden, NULL); + opline = get_next_op(CG(active_op_array) TSRMLS_CC); + opline->opcode = ZEND_CATCH; + opline->op1_type = IS_CONST; + opline->op1.constant = zend_add_class_name_literal(CG(active_op_array), + zend_resolve_class_name_ast(class_ast TSRMLS_CC) TSRMLS_CC); + + opline->op2_type = IS_CV; + opline->op2.var = lookup_cv(CG(active_op_array), zend_string_copy(Z_STR_P(var_name)) TSRMLS_CC); + opline->result.num = is_last_catch; + + zend_compile_stmt(stmt_ast TSRMLS_CC); + + if (!is_last_catch) { + jmp_opnums[i + 1] = zend_emit_jump(0 TSRMLS_CC); } - } - zend_hash_apply_with_argument(&ce->function_table, (apply_func_arg_t)zend_fixup_trait_method, ce TSRMLS_CC); + opline = &CG(active_op_array)->opcodes[opnum_catch]; + opline->extended_value = get_next_op_number(CG(active_op_array)); + } - if (overriden) { - zend_hash_destroy(overriden); - FREE_HASHTABLE(overriden); + for (i = 0; i < catches->children; ++i) { + zend_update_jump_target_to_next(jmp_opnums[i] TSRMLS_CC); } -} -/* }}} */ -static zend_class_entry* find_first_definition(zend_class_entry *ce, size_t current_trait, const char* prop_name, int prop_name_length, ulong prop_hash, zend_class_entry *coliding_ce) /* {{{ */ -{ - size_t i; + if (finally_ast) { + uint32_t opnum_jmp = get_next_op_number(CG(active_op_array)) + 1; - if (coliding_ce == ce) { - for (i = 0; i < current_trait; i++) { - if (zend_hash_quick_exists(&ce->traits[i]->properties_info, prop_name, prop_name_length+1, prop_hash)) { - return ce->traits[i]; - } - } + opline = zend_emit_op(NULL, ZEND_FAST_CALL, NULL, NULL TSRMLS_CC); + opline->op1.opline_num = opnum_jmp + 1; + + zend_emit_op(NULL, ZEND_JMP, NULL, NULL TSRMLS_CC); + + CG(context).in_finally++; + zend_compile_stmt(finally_ast TSRMLS_CC); + CG(context).in_finally--; + + CG(active_op_array)->try_catch_array[try_catch_offset].finally_op = opnum_jmp + 1; + CG(active_op_array)->try_catch_array[try_catch_offset].finally_end + = get_next_op_number(CG(active_op_array)); + CG(active_op_array)->fn_flags |= ZEND_ACC_HAS_FINALLY_BLOCK; + + zend_emit_op(NULL, ZEND_FAST_RET, NULL, NULL TSRMLS_CC); + + zend_update_jump_target_to_next(opnum_jmp TSRMLS_CC); } - return coliding_ce; + efree(jmp_opnums); } /* }}} */ -static void zend_do_traits_property_binding(zend_class_entry *ce TSRMLS_DC) /* {{{ */ +/* Encoding declarations must already be handled during parsing */ +void zend_handle_encoding_declaration(zend_ast *ast TSRMLS_DC) /* {{{ */ { - size_t i; - zend_property_info *property_info; - zend_property_info *coliding_prop; - zval compare_result; - const char* prop_name; - int prop_name_length; - ulong prop_hash; - const char* class_name_unused; - zend_bool not_compatible; - zval* prop_value; - char* doc_comment; - zend_uint flags; + zend_ast_list *declares = zend_ast_get_list(ast); + uint32_t i; + for (i = 0; i < declares->children; ++i) { + zend_ast *declare_ast = declares->child[i]; + zend_ast *name_ast = declare_ast->child[0]; + zend_ast *value_ast = declare_ast->child[1]; + zend_string *name = zend_ast_get_str(name_ast); - /* In the following steps the properties are inserted into the property table - * for that, a very strict approach is applied: - * - check for compatibility, if not compatible with any property in class -> fatal - * - if compatible, then strict notice - */ - for (i = 0; i < ce->num_traits; i++) { - for (zend_hash_internal_pointer_reset(&ce->traits[i]->properties_info); - zend_hash_get_current_data(&ce->traits[i]->properties_info, (void *) &property_info) == SUCCESS; - zend_hash_move_forward(&ce->traits[i]->properties_info)) { - /* first get the unmangeld name if necessary, - * then check whether the property is already there - */ - flags = property_info->flags; - if ((flags & ZEND_ACC_PPP_MASK) == ZEND_ACC_PUBLIC) { - prop_hash = property_info->h; - prop_name = property_info->name; - prop_name_length = property_info->name_length; - } else { - /* for private and protected we need to unmangle the names */ - zend_unmangle_property_name_ex(property_info->name, property_info->name_length, - &class_name_unused, &prop_name, &prop_name_length); - prop_hash = zend_get_hash_value(prop_name, prop_name_length + 1); + if (zend_string_equals_literal_ci(name, "encoding")) { + if (value_ast->kind != ZEND_AST_ZVAL) { + zend_error_noreturn(E_COMPILE_ERROR, "Encoding must be a literal"); } - /* next: check for conflicts with current class */ - if (zend_hash_quick_find(&ce->properties_info, prop_name, prop_name_length+1, prop_hash, (void **) &coliding_prop) == SUCCESS) { - if (coliding_prop->flags & ZEND_ACC_SHADOW) { - zend_hash_quick_del(&ce->properties_info, prop_name, prop_name_length+1, prop_hash); - flags |= ZEND_ACC_CHANGED; - } else { - if ((coliding_prop->flags & (ZEND_ACC_PPP_MASK | ZEND_ACC_STATIC)) - == (flags & (ZEND_ACC_PPP_MASK | ZEND_ACC_STATIC))) { - /* flags are identical, now the value needs to be checked */ - if (flags & ZEND_ACC_STATIC) { - not_compatible = (FAILURE == compare_function(&compare_result, - ce->default_static_members_table[coliding_prop->offset], - ce->traits[i]->default_static_members_table[property_info->offset] TSRMLS_CC)) - || (Z_LVAL(compare_result) != 0); - } else { - not_compatible = (FAILURE == compare_function(&compare_result, - ce->default_properties_table[coliding_prop->offset], - ce->traits[i]->default_properties_table[property_info->offset] TSRMLS_CC)) - || (Z_LVAL(compare_result) != 0); - } - } else { - /* the flags are not identical, thus, we assume properties are not compatible */ - not_compatible = 1; - } + if (CG(multibyte)) { + zend_string *encoding_name = zval_get_string(zend_ast_get_zval(value_ast)); - if (not_compatible) { - zend_error(E_COMPILE_ERROR, - "%s and %s define the same property ($%s) in the composition of %s. However, the definition differs and is considered incompatible. Class was composed", - find_first_definition(ce, i, prop_name, prop_name_length, prop_hash, coliding_prop->ce)->name, - property_info->ce->name, - prop_name, - ce->name); - } else { - zend_error(E_STRICT, - "%s and %s define the same property ($%s) in the composition of %s. This might be incompatible, to improve maintainability consider using accessor methods in traits instead. Class was composed", - find_first_definition(ce, i, prop_name, prop_name_length, prop_hash, coliding_prop->ce)->name, - property_info->ce->name, - prop_name, - ce->name); - continue; + const zend_encoding *new_encoding, *old_encoding; + zend_encoding_filter old_input_filter; + + CG(encoding_declared) = 1; + + new_encoding = zend_multibyte_fetch_encoding(encoding_name->val TSRMLS_CC); + if (!new_encoding) { + zend_error(E_COMPILE_WARNING, "Unsupported encoding [%s]", encoding_name->val); + } else { + old_input_filter = LANG_SCNG(input_filter); + old_encoding = LANG_SCNG(script_encoding); + zend_multibyte_set_filter(new_encoding TSRMLS_CC); + + /* need to re-scan if input filter changed */ + if (old_input_filter != LANG_SCNG(input_filter) || + (old_input_filter && new_encoding != old_encoding)) { + zend_multibyte_yyinput_again(old_input_filter, old_encoding TSRMLS_CC); } } - } - /* property not found, so lets add it */ - if (flags & ZEND_ACC_STATIC) { - prop_value = ce->traits[i]->default_static_members_table[property_info->offset]; + zend_string_release(encoding_name); } else { - prop_value = ce->traits[i]->default_properties_table[property_info->offset]; + zend_error(E_COMPILE_WARNING, "declare(encoding=...) ignored because " + "Zend multibyte feature is turned off by settings"); } - Z_ADDREF_P(prop_value); - - doc_comment = property_info->doc_comment ? estrndup(property_info->doc_comment, property_info->doc_comment_len) : NULL; - zend_declare_property_ex(ce, prop_name, prop_name_length, - prop_value, flags, - doc_comment, property_info->doc_comment_len TSRMLS_CC); } } } /* }}} */ -static void zend_do_check_for_inconsistent_traits_aliasing(zend_class_entry *ce TSRMLS_DC) /* {{{ */ +void zend_compile_declare(zend_ast *ast TSRMLS_DC) /* {{{ */ { - int i = 0; - zend_trait_alias* cur_alias; - char* lc_method_name; - - if (ce->trait_aliases) { - while (ce->trait_aliases[i]) { - cur_alias = ce->trait_aliases[i]; - /** The trait for this alias has not been resolved, this means, this - alias was not applied. Abort with an error. */ - if (!cur_alias->trait_method->ce) { - if (cur_alias->alias) { - /** Plain old inconsistency/typo/bug */ - zend_error(E_COMPILE_ERROR, - "An alias (%s) was defined for method %s(), but this method does not exist", - cur_alias->alias, - cur_alias->trait_method->method_name); - } else { - /** Here are two possible cases: - 1) this is an attempt to modifiy the visibility - of a method introduce as part of another alias. - Since that seems to violate the DRY principle, - we check against it and abort. - 2) it is just a plain old inconsitency/typo/bug - as in the case where alias is set. */ - - lc_method_name = zend_str_tolower_dup(cur_alias->trait_method->method_name, - cur_alias->trait_method->mname_len); - if (zend_hash_exists(&ce->function_table, - lc_method_name, - cur_alias->trait_method->mname_len+1)) { - efree(lc_method_name); - zend_error(E_COMPILE_ERROR, - "The modifiers for the trait alias %s() need to be changed in the same statment in which the alias is defined. Error", - cur_alias->trait_method->method_name); - } else { - efree(lc_method_name); - zend_error(E_COMPILE_ERROR, - "The modifiers of the trait method %s() are changed, but this method does not exist. Error", - cur_alias->trait_method->method_name); + zend_ast_list *declares = zend_ast_get_list(ast->child[0]); + zend_ast *stmt_ast = ast->child[1]; + zend_declarables orig_declarables = CG(declarables); + uint32_t i; - } - } + for (i = 0; i < declares->children; ++i) { + zend_ast *declare_ast = declares->child[i]; + zend_ast *name_ast = declare_ast->child[0]; + zend_ast *value_ast = declare_ast->child[1]; + + zend_string *name = zend_ast_get_str(name_ast); + if (zend_string_equals_literal_ci(name, "ticks")) { + zval value_zv; + zend_const_expr_to_zval(&value_zv, value_ast TSRMLS_CC); + convert_to_long(&value_zv); + ZVAL_COPY_VALUE(&CG(declarables).ticks, &value_zv); + zval_dtor(&value_zv); + } else if (zend_string_equals_literal_ci(name, "encoding")) { + /* Encoding declaration was already handled during parsing. Here we + * only check that it is the first statement in the file. */ + uint32_t num = CG(active_op_array)->last; + while (num > 0 && + (CG(active_op_array)->opcodes[num-1].opcode == ZEND_EXT_STMT || + CG(active_op_array)->opcodes[num-1].opcode == ZEND_TICKS)) { + --num; } - i++; + + if (num > 0) { + zend_error_noreturn(E_COMPILE_ERROR, "Encoding declaration pragma must be " + "the very first statement in the script"); + } + } else { + zend_error(E_COMPILE_WARNING, "Unsupported declare '%s'", name->val); } } + + if (stmt_ast) { + zend_compile_stmt(stmt_ast TSRMLS_CC); + + CG(declarables) = orig_declarables; + } } /* }}} */ -ZEND_API void zend_do_bind_traits(zend_class_entry *ce TSRMLS_DC) /* {{{ */ +void zend_compile_stmt_list(zend_ast *ast TSRMLS_DC) /* {{{ */ { + zend_ast_list *list = zend_ast_get_list(ast); + uint32_t i; + for (i = 0; i < list->children; ++i) { + zend_compile_stmt(list->child[i] TSRMLS_CC); + } +} +/* }}} */ + +void zend_compile_params(zend_ast *ast TSRMLS_DC) /* {{{ */ +{ + zend_ast_list *list = zend_ast_get_list(ast); + uint32_t i; + zend_op_array *op_array = CG(active_op_array); + zend_arg_info *arg_infos; - if (ce->num_traits <= 0) { + if (list->children == 0) { return; } + + arg_infos = safe_emalloc(sizeof(zend_arg_info), list->children, 0); + for (i = 0; i < list->children; ++i) { + zend_ast *param_ast = list->child[i]; + zend_ast *type_ast = param_ast->child[0]; + zend_ast *var_ast = param_ast->child[1]; + zend_ast *default_ast = param_ast->child[2]; + zend_string *name = zend_ast_get_str(var_ast); + zend_bool is_ref = (param_ast->attr & ZEND_PARAM_REF) != 0; + zend_bool is_variadic = (param_ast->attr & ZEND_PARAM_VARIADIC) != 0; + + znode var_node, default_node; + zend_uchar opcode; + zend_op *opline; + zend_arg_info *arg_info; - /* complete initialization of trait strutures in ce */ - zend_traits_init_trait_structures(ce TSRMLS_CC); + if (zend_is_auto_global(name TSRMLS_CC)) { + zend_error_noreturn(E_COMPILE_ERROR, "Cannot re-assign auto-global variable %s", + name->val); + } - /* first care about all methods to be flattened into the class */ - zend_do_traits_method_binding(ce TSRMLS_CC); + var_node.op_type = IS_CV; + var_node.u.op.var = lookup_cv(CG(active_op_array), zend_string_copy(name) TSRMLS_CC); - /* Aliases which have not been applied indicate typos/bugs. */ - zend_do_check_for_inconsistent_traits_aliasing(ce TSRMLS_CC); + if (EX_VAR_TO_NUM(var_node.u.op.var) != i) { + zend_error_noreturn(E_COMPILE_ERROR, "Redefinition of parameter $%s", + name->val); + } else if (zend_string_equals_literal(name, "this")) { + if (op_array->scope && (op_array->fn_flags & ZEND_ACC_STATIC) == 0) { + zend_error_noreturn(E_COMPILE_ERROR, "Cannot re-assign $this"); + } + op_array->this_var = var_node.u.op.var; + } - /* then flatten the properties into it, to, mostly to notfiy developer about problems */ - zend_do_traits_property_binding(ce TSRMLS_CC); + if (op_array->fn_flags & ZEND_ACC_VARIADIC) { + zend_error_noreturn(E_COMPILE_ERROR, "Only the last parameter can be variadic"); + } - /* verify that all abstract methods from traits have been implemented */ - zend_verify_abstract_class(ce TSRMLS_CC); + if (is_variadic) { + opcode = ZEND_RECV_VARIADIC; + default_node.op_type = IS_UNUSED; + op_array->fn_flags |= ZEND_ACC_VARIADIC; - /* now everything should be fine and an added ZEND_ACC_IMPLICIT_ABSTRACT_CLASS should be removed */ - if (ce->ce_flags & ZEND_ACC_IMPLICIT_ABSTRACT_CLASS) { - ce->ce_flags -= ZEND_ACC_IMPLICIT_ABSTRACT_CLASS; - } -} -/* }}} */ + if (default_ast) { + zend_error_noreturn(E_COMPILE_ERROR, + "Variadic parameter cannot have a default value"); + } + } else if (default_ast) { + opcode = ZEND_RECV_INIT; + default_node.op_type = IS_CONST; + zend_const_expr_to_zval(&default_node.u.constant, default_ast TSRMLS_CC); + } else { + opcode = ZEND_RECV; + default_node.op_type = IS_UNUSED; + op_array->required_num_args = i + 1; + } + + opline = zend_emit_op(NULL, opcode, NULL, &default_node TSRMLS_CC); + SET_NODE(opline->result, &var_node); + opline->op1.num = i + 1; + + arg_info = &arg_infos[i]; + arg_info->name = estrndup(name->val, name->len); + arg_info->name_len = name->len; + arg_info->pass_by_reference = is_ref; + arg_info->is_variadic = is_variadic; + arg_info->type_hint = 0; + arg_info->allow_null = 1; + arg_info->class_name = NULL; + arg_info->class_name_len = 0; + + if (type_ast) { + zend_bool has_null_default = default_ast + && (Z_TYPE(default_node.u.constant) == IS_NULL + || (Z_TYPE(default_node.u.constant) == IS_CONSTANT + && strcasecmp(Z_STRVAL(default_node.u.constant), "NULL") == 0) + || Z_TYPE(default_node.u.constant) == IS_CONSTANT_AST); // ??? + + op_array->fn_flags |= ZEND_ACC_HAS_TYPE_HINTS; + arg_info->allow_null = has_null_default; + + if (type_ast->kind == ZEND_AST_TYPE) { + arg_info->type_hint = type_ast->attr; + if (arg_info->type_hint == IS_ARRAY) { + if (default_ast && !has_null_default + && Z_TYPE(default_node.u.constant) != IS_ARRAY + ) { + zend_error_noreturn(E_COMPILE_ERROR, "Default value for parameters " + "with array type hint can only be an array or NULL"); + } + } else if (arg_info->type_hint == IS_CALLABLE && default_ast) { + if (!has_null_default) { + zend_error_noreturn(E_COMPILE_ERROR, "Default value for parameters " + "with callable type hint can only be NULL"); + } + } + } else { + zend_string *class_name = zend_ast_get_str(type_ast); -ZEND_API int do_bind_function(const zend_op_array *op_array, zend_op *opline, HashTable *function_table, zend_bool compile_time) /* {{{ */ -{ - zend_function *function; - zval *op1, *op2; + if (zend_is_const_default_class_ref(type_ast)) { + class_name = zend_resolve_class_name_ast(type_ast TSRMLS_CC); + } else { + zend_string_addref(class_name); + } - if (compile_time) { - op1 = &CONSTANT_EX(op_array, opline->op1.constant); - op2 = &CONSTANT_EX(op_array, opline->op2.constant); - } else { - op1 = opline->op1.zv; - op2 = opline->op2.zv; - } + arg_info->type_hint = IS_OBJECT; + arg_info->class_name = estrndup(class_name->val, class_name->len); + arg_info->class_name_len = class_name->len; - zend_hash_quick_find(function_table, Z_STRVAL_P(op1), Z_STRLEN_P(op1), Z_HASH_P(op1), (void *) &function); - if (zend_hash_quick_add(function_table, Z_STRVAL_P(op2), Z_STRLEN_P(op2)+1, Z_HASH_P(op2), function, sizeof(zend_function), NULL)==FAILURE) { - int error_level = compile_time ? E_COMPILE_ERROR : E_ERROR; - zend_function *old_function; + zend_string_release(class_name); - if (zend_hash_quick_find(function_table, Z_STRVAL_P(op2), Z_STRLEN_P(op2)+1, Z_HASH_P(op2), (void *) &old_function)==SUCCESS - && old_function->type == ZEND_USER_FUNCTION - && old_function->op_array.last > 0) { - zend_error(error_level, "Cannot redeclare %s() (previously declared in %s:%d)", - function->common.function_name, - old_function->op_array.filename, - old_function->op_array.opcodes[0].lineno); - } else { - zend_error(error_level, "Cannot redeclare %s()", function->common.function_name); + if (default_ast && !has_null_default) { + zend_error_noreturn(E_COMPILE_ERROR, "Default value for parameters " + "with a class type hint can only be NULL"); + } + } } - return FAILURE; - } else { - (*function->op_array.refcount)++; - function->op_array.static_variables = NULL; /* NULL out the unbound function */ - return SUCCESS; } + + /* These are assigned at the end to avoid unitialized memory in case of an error */ + op_array->num_args = list->children; + op_array->arg_info = arg_infos; } /* }}} */ -void zend_prepare_reference(znode *result, znode *class_name, znode *method_name TSRMLS_DC) /* {{{ */ +void zend_compile_closure_uses(zend_ast *ast TSRMLS_DC) /* {{{ */ { - zend_trait_method_reference *method_ref = emalloc(sizeof(zend_trait_method_reference)); - method_ref->ce = NULL; + zend_ast_list *list = zend_ast_get_list(ast); + uint32_t i; - /* REM: There should not be a need for copying, - zend_do_begin_class_declaration is also just using that string */ - if (class_name) { - zend_resolve_class_name(class_name TSRMLS_CC); - method_ref->class_name = Z_STRVAL(class_name->u.constant); - method_ref->cname_len = Z_STRLEN(class_name->u.constant); - } else { - method_ref->class_name = NULL; - method_ref->cname_len = 0; - } + for (i = 0; i < list->children; ++i) { + zend_ast *var_ast = list->child[i]; + zend_string *name = zend_ast_get_str(var_ast); + zend_bool by_ref = var_ast->attr; + zval zv; - method_ref->method_name = Z_STRVAL(method_name->u.constant); - method_ref->mname_len = Z_STRLEN(method_name->u.constant); + if (zend_string_equals_literal(name, "this")) { + zend_error_noreturn(E_COMPILE_ERROR, "Cannot use $this as lexical variable"); + } - result->u.op.ptr = method_ref; - result->op_type = IS_TMP_VAR; + ZVAL_NULL(&zv); + Z_CONST_FLAGS(zv) = by_ref ? IS_LEXICAL_REF : IS_LEXICAL_VAR; + + zend_compile_static_var_common(var_ast, &zv, by_ref TSRMLS_CC); + } } /* }}} */ -void zend_add_trait_alias(znode *method_reference, znode *modifiers, znode *alias TSRMLS_DC) /* {{{ */ +void zend_begin_method_decl(zend_op_array *op_array, zend_string *name, zend_bool has_body TSRMLS_DC) /* {{{ */ { zend_class_entry *ce = CG(active_class_entry); - zend_trait_alias *trait_alias; + zend_bool in_interface = (ce->ce_flags & ZEND_ACC_INTERFACE) != 0; + zend_bool in_trait = ZEND_CE_IS_TRAIT(ce); + zend_bool is_public = (op_array->fn_flags & ZEND_ACC_PUBLIC) != 0; + zend_bool is_static = (op_array->fn_flags & ZEND_ACC_STATIC) != 0; - if (Z_LVAL(modifiers->u.constant) == ZEND_ACC_STATIC) { - zend_error(E_COMPILE_ERROR, "Cannot use 'static' as method modifier"); - return; - } else if (Z_LVAL(modifiers->u.constant) == ZEND_ACC_ABSTRACT) { - zend_error(E_COMPILE_ERROR, "Cannot use 'abstract' as method modifier"); - return; - } else if (Z_LVAL(modifiers->u.constant) == ZEND_ACC_FINAL) { - zend_error(E_COMPILE_ERROR, "Cannot use 'final' as method modifier"); - return; - } + zend_string *lcname; - trait_alias = emalloc(sizeof(zend_trait_alias)); - trait_alias->trait_method = (zend_trait_method_reference*)method_reference->u.op.ptr; - trait_alias->modifiers = Z_LVAL(modifiers->u.constant); - if (alias) { - trait_alias->alias = Z_STRVAL(alias->u.constant); - trait_alias->alias_len = Z_STRLEN(alias->u.constant); - } else { - trait_alias->alias = NULL; + if (in_interface) { + if ((op_array->fn_flags & ZEND_ACC_PPP_MASK) != ZEND_ACC_PUBLIC) { + zend_error_noreturn(E_COMPILE_ERROR, "Access type for interface method " + "%s::%s() must be omitted", ce->name->val, name->val); + } + op_array->fn_flags |= ZEND_ACC_ABSTRACT; + } else if (is_static && (op_array->fn_flags & ZEND_ACC_ABSTRACT)) { + zend_error(E_STRICT, "Static function %s::%s() should not be abstract", + ce->name->val, name->val); } - zend_add_to_list(&ce->trait_aliases, trait_alias TSRMLS_CC); -} -/* }}} */ -void zend_add_trait_precedence(znode *method_reference, znode *trait_list TSRMLS_DC) /* {{{ */ -{ - zend_class_entry *ce = CG(active_class_entry); - zend_trait_precedence *trait_precedence = emalloc(sizeof(zend_trait_precedence)); + if (op_array->fn_flags & ZEND_ACC_ABSTRACT) { + if (op_array->fn_flags & ZEND_ACC_PRIVATE) { + zend_error_noreturn(E_COMPILE_ERROR, "%s function %s::%s() cannot be declared private", + in_interface ? "Interface" : "Abstract", ce->name->val, name->val); + } - trait_precedence->trait_method = (zend_trait_method_reference*)method_reference->u.op.ptr; - trait_precedence->exclude_from_classes = (zend_class_entry**) trait_list->u.op.ptr; + if (has_body) { + zend_error_noreturn(E_COMPILE_ERROR, "%s function %s::%s() cannot contain body", + in_interface ? "Interface" : "Abstract", ce->name->val, name->val); + } - zend_add_to_list(&ce->trait_precedences, trait_precedence TSRMLS_CC); -} -/* }}} */ + ce->ce_flags |= ZEND_ACC_IMPLICIT_ABSTRACT_CLASS; + } else if (!has_body) { + zend_error_noreturn(E_COMPILE_ERROR, "Non-abstract method %s::%s() must contain body", + ce->name->val, name->val); + } -ZEND_API zend_class_entry *do_bind_class(const zend_op_array* op_array, const zend_op *opline, HashTable *class_table, zend_bool compile_time TSRMLS_DC) /* {{{ */ -{ - zend_class_entry *ce, **pce; - zval *op1, *op2; + op_array->scope = ce; + op_array->function_name = zend_string_copy(name); - if (compile_time) { - op1 = &CONSTANT_EX(op_array, opline->op1.constant); - op2 = &CONSTANT_EX(op_array, opline->op2.constant); - } else { - op1 = opline->op1.zv; - op2 = opline->op2.zv; - } - if (zend_hash_quick_find(class_table, Z_STRVAL_P(op1), Z_STRLEN_P(op1), Z_HASH_P(op1), (void **) &pce)==FAILURE) { - zend_error(E_COMPILE_ERROR, "Internal Zend error - Missing class information for %s", Z_STRVAL_P(op1)); - return NULL; - } else { - ce = *pce; + lcname = zend_string_alloc(name->len, 0); + zend_str_tolower_copy(lcname->val, name->val, name->len); + lcname = zend_new_interned_string(lcname TSRMLS_CC); + + if (zend_hash_add_ptr(&ce->function_table, lcname, op_array) == NULL) { + zend_error_noreturn(E_COMPILE_ERROR, "Cannot redeclare %s::%s()", + ce->name->val, name->val); } - ce->refcount++; - if (zend_hash_quick_add(class_table, Z_STRVAL_P(op2), Z_STRLEN_P(op2)+1, Z_HASH_P(op2), &ce, sizeof(zend_class_entry *), NULL)==FAILURE) { - ce->refcount--; - if (!compile_time) { - /* If we're in compile time, in practice, it's quite possible - * that we'll never reach this class declaration at runtime, - * so we shut up about it. This allows the if (!defined('FOO')) { return; } - * approach to work. - */ - zend_error(E_COMPILE_ERROR, "Cannot redeclare class %s", ce->name); + + if (in_interface) { + if (zend_string_equals_literal(lcname, ZEND_CALL_FUNC_NAME)) { + if (!is_public || is_static) { + zend_error(E_WARNING, "The magic method __call() must have " + "public visibility and cannot be static"); + } + } else if (zend_string_equals_literal(lcname, ZEND_CALLSTATIC_FUNC_NAME)) { + if (!is_public || !is_static) { + zend_error(E_WARNING, "The magic method __callStatic() must have " + "public visibility and be static"); + } + } else if (zend_string_equals_literal(lcname, ZEND_GET_FUNC_NAME)) { + if (!is_public || is_static) { + zend_error(E_WARNING, "The magic method __get() must have " + "public visibility and cannot be static"); + } + } else if (zend_string_equals_literal(lcname, ZEND_SET_FUNC_NAME)) { + if (!is_public || is_static) { + zend_error(E_WARNING, "The magic method __set() must have " + "public visibility and cannot be static"); + } + } else if (zend_string_equals_literal(lcname, ZEND_UNSET_FUNC_NAME)) { + if (!is_public || is_static) { + zend_error(E_WARNING, "The magic method __unset() must have " + "public visibility and cannot be static"); + } + } else if (zend_string_equals_literal(lcname, ZEND_ISSET_FUNC_NAME)) { + if (!is_public || is_static) { + zend_error(E_WARNING, "The magic method __isset() must have " + "public visibility and cannot be static"); + } + } else if (zend_string_equals_literal(lcname, ZEND_TOSTRING_FUNC_NAME)) { + if (!is_public || is_static) { + zend_error(E_WARNING, "The magic method __toString() must have " + "public visibility and cannot be static"); + } + } else if (zend_string_equals_literal(lcname, ZEND_INVOKE_FUNC_NAME)) { + if (!is_public || is_static) { + zend_error(E_WARNING, "The magic method __invoke() must have " + "public visibility and cannot be static"); + } + } else if (zend_string_equals_literal(lcname, ZEND_DEBUGINFO_FUNC_NAME)) { + if (!is_public || is_static) { + zend_error(E_WARNING, "The magic method __debugInfo() must have " + "public visibility and cannot be static"); + } } - return NULL; } else { - if (!(ce->ce_flags & (ZEND_ACC_INTERFACE|ZEND_ACC_IMPLEMENT_INTERFACES|ZEND_ACC_IMPLEMENT_TRAITS))) { - zend_verify_abstract_class(ce TSRMLS_CC); + if (!in_trait && zend_string_equals_str_ci(lcname, ce->name)) { + if (!ce->constructor) { + ce->constructor = (zend_function *) op_array; + } + } else if (zend_string_equals_literal(lcname, ZEND_CONSTRUCTOR_FUNC_NAME)) { + if (CG(active_class_entry)->constructor) { + zend_error(E_STRICT, "Redefining already defined constructor for class %s", + ce->name->val); + } + ce->constructor = (zend_function *) op_array; + } else if (zend_string_equals_literal(lcname, ZEND_DESTRUCTOR_FUNC_NAME)) { + ce->destructor = (zend_function *) op_array; + } else if (zend_string_equals_literal(lcname, ZEND_CLONE_FUNC_NAME)) { + ce->clone = (zend_function *) op_array; + } else if (zend_string_equals_literal(lcname, ZEND_CALL_FUNC_NAME)) { + if (!is_public || is_static) { + zend_error(E_WARNING, "The magic method __call() must have " + "public visibility and cannot be static"); + } + ce->__call = (zend_function *) op_array; + } else if (zend_string_equals_literal(lcname, ZEND_CALLSTATIC_FUNC_NAME)) { + if (!is_public || !is_static) { + zend_error(E_WARNING, "The magic method __callStatic() must have " + "public visibility and be static"); + } + ce->__callstatic = (zend_function *) op_array; + } else if (zend_string_equals_literal(lcname, ZEND_GET_FUNC_NAME)) { + if (!is_public || is_static) { + zend_error(E_WARNING, "The magic method __get() must have " + "public visibility and cannot be static"); + } + ce->__get = (zend_function *) op_array; + } else if (zend_string_equals_literal(lcname, ZEND_SET_FUNC_NAME)) { + if (!is_public || is_static) { + zend_error(E_WARNING, "The magic method __set() must have " + "public visibility and cannot be static"); + } + ce->__set = (zend_function *) op_array; + } else if (zend_string_equals_literal(lcname, ZEND_UNSET_FUNC_NAME)) { + if (!is_public || is_static) { + zend_error(E_WARNING, "The magic method __unset() must have " + "public visibility and cannot be static"); + } + ce->__unset = (zend_function *) op_array; + } else if (zend_string_equals_literal(lcname, ZEND_ISSET_FUNC_NAME)) { + if (!is_public || is_static) { + zend_error(E_WARNING, "The magic method __isset() must have " + "public visibility and cannot be static"); + } + ce->__isset = (zend_function *) op_array; + } else if (zend_string_equals_literal(lcname, ZEND_TOSTRING_FUNC_NAME)) { + if (!is_public || is_static) { + zend_error(E_WARNING, "The magic method __toString() must have " + "public visibility and cannot be static"); + } + ce->__tostring = (zend_function *) op_array; + } else if (zend_string_equals_literal(lcname, ZEND_INVOKE_FUNC_NAME)) { + if (!is_public || is_static) { + zend_error(E_WARNING, "The magic method __invoke() must have " + "public visibility and cannot be static"); + } + } else if (zend_string_equals_literal(lcname, ZEND_DEBUGINFO_FUNC_NAME)) { + if (!is_public || is_static) { + zend_error(E_WARNING, "The magic method __debugInfo() must have " + "public visibility and cannot be static"); + } + ce->__debugInfo = (zend_function *) op_array; + } else if (!is_static) { + op_array->fn_flags |= ZEND_ACC_ALLOW_STATIC; } - return ce; } + + zend_string_release(lcname); } /* }}} */ -ZEND_API zend_class_entry *do_bind_inherited_class(const zend_op_array *op_array, const zend_op *opline, HashTable *class_table, zend_class_entry *parent_ce, zend_bool compile_time TSRMLS_DC) /* {{{ */ +static void zend_begin_func_decl(znode *result, zend_op_array *op_array, zend_ast_decl *decl TSRMLS_DC) /* {{{ */ { - zend_class_entry *ce, **pce; - int found_ce; - zval *op1, *op2; + zend_ast *params_ast = decl->child[0]; + zend_string *name = decl->name, *lcname; + zend_op *opline; - if (compile_time) { - op1 = &CONSTANT_EX(op_array, opline->op1.constant); - op2 = &CONSTANT_EX(op_array, opline->op2.constant); - } else { - op1 = opline->op1.zv; - op2 = opline->op2.zv; - } + op_array->function_name = name = zend_prefix_with_ns(name TSRMLS_CC); - found_ce = zend_hash_quick_find(class_table, Z_STRVAL_P(op1), Z_STRLEN_P(op1), Z_HASH_P(op1), (void **) &pce); + lcname = zend_string_alloc(name->len, 0); + zend_str_tolower_copy(lcname->val, name->val, name->len); - if (found_ce == FAILURE) { - if (!compile_time) { - /* If we're in compile time, in practice, it's quite possible - * that we'll never reach this class declaration at runtime, - * so we shut up about it. This allows the if (!defined('FOO')) { return; } - * approach to work. - */ - zend_error(E_COMPILE_ERROR, "Cannot redeclare class %s", Z_STRVAL_P(op2)); + if (CG(current_import_function)) { + zend_string *import_name = zend_hash_find_ptr(CG(current_import_function), lcname); + if (import_name && !zend_string_equals_str_ci(lcname, import_name)) { + zend_error(E_COMPILE_ERROR, "Cannot declare function %s " + "because the name is already in use", name->val); } - return NULL; - } else { - ce = *pce; } - if (parent_ce->ce_flags & ZEND_ACC_INTERFACE) { - zend_error(E_COMPILE_ERROR, "Class %s cannot extend from interface %s", ce->name, parent_ce->name); - } else if ((parent_ce->ce_flags & ZEND_ACC_TRAIT) == ZEND_ACC_TRAIT) { - zend_error(E_COMPILE_ERROR, "Class %s cannot extend from trait %s", ce->name, parent_ce->name); + if (zend_string_equals_literal(lcname, ZEND_AUTOLOAD_FUNC_NAME) + && zend_ast_get_list(params_ast)->children != 1 + ) { + zend_error_noreturn(E_COMPILE_ERROR, "%s() must take exactly 1 argument", + ZEND_AUTOLOAD_FUNC_NAME); } - zend_do_inheritance(ce, parent_ce TSRMLS_CC); + if (op_array->fn_flags & ZEND_ACC_CLOSURE) { + opline = zend_emit_op_tmp(result, ZEND_DECLARE_LAMBDA_FUNCTION, NULL, NULL TSRMLS_CC); + } else { + opline = get_next_op(CG(active_op_array) TSRMLS_CC); + opline->opcode = ZEND_DECLARE_FUNCTION; + opline->op2_type = IS_CONST; + LITERAL_STR(opline->op2, zend_string_copy(lcname)); + } - ce->refcount++; + { + zend_string *key = zend_build_runtime_definition_key(lcname, decl->lex_pos TSRMLS_CC); - /* Register the derived class */ - if (zend_hash_quick_add(class_table, Z_STRVAL_P(op2), Z_STRLEN_P(op2)+1, Z_HASH_P(op2), pce, sizeof(zend_class_entry *), NULL)==FAILURE) { - zend_error(E_COMPILE_ERROR, "Cannot redeclare class %s", ce->name); + opline->op1_type = IS_CONST; + LITERAL_STR(opline->op1, key); + + zend_hash_update_ptr(CG(function_table), key, op_array); } - return ce; + + zend_string_release(lcname); } /* }}} */ -void zend_do_early_binding(TSRMLS_D) /* {{{ */ +void zend_compile_func_decl(znode *result, zend_ast *ast TSRMLS_DC) /* {{{ */ { - zend_op *opline = &CG(active_op_array)->opcodes[CG(active_op_array)->last-1]; - HashTable *table; + zend_ast_decl *decl = (zend_ast_decl *) ast; + zend_ast *params_ast = decl->child[0]; + zend_ast *uses_ast = decl->child[1]; + zend_ast *stmt_ast = decl->child[2]; + zend_bool is_method = decl->kind == ZEND_AST_METHOD; - while (opline->opcode == ZEND_TICKS && opline > CG(active_op_array)->opcodes) { - opline--; - } + zend_op_array *orig_op_array = CG(active_op_array); + zend_op_array *op_array = zend_arena_alloc(&CG(arena), sizeof(zend_op_array)); - switch (opline->opcode) { - case ZEND_DECLARE_FUNCTION: - if (do_bind_function(CG(active_op_array), opline, CG(function_table), 1) == FAILURE) { - return; - } - table = CG(function_table); - break; - case ZEND_DECLARE_CLASS: - if (do_bind_class(CG(active_op_array), opline, CG(class_table), 1 TSRMLS_CC) == NULL) { - return; - } - table = CG(class_table); - break; - case ZEND_DECLARE_INHERITED_CLASS: - { - zend_op *fetch_class_opline = opline-1; - zval *parent_name; - zend_class_entry **pce; - - parent_name = &CONSTANT(fetch_class_opline->op2.constant); - if ((zend_lookup_class(Z_STRVAL_P(parent_name), Z_STRLEN_P(parent_name), &pce TSRMLS_CC) == FAILURE) || - ((CG(compiler_options) & ZEND_COMPILE_IGNORE_INTERNAL_CLASSES) && - ((*pce)->type == ZEND_INTERNAL_CLASS))) { - if (CG(compiler_options) & ZEND_COMPILE_DELAYED_BINDING) { - zend_uint *opline_num = &CG(active_op_array)->early_binding; - - while (*opline_num != -1) { - opline_num = &CG(active_op_array)->opcodes[*opline_num].result.opline_num; - } - *opline_num = opline - CG(active_op_array)->opcodes; - opline->opcode = ZEND_DECLARE_INHERITED_CLASS_DELAYED; - opline->result_type = IS_UNUSED; - opline->result.opline_num = -1; - } - return; - } - if (do_bind_inherited_class(CG(active_op_array), opline, CG(class_table), *pce, 1 TSRMLS_CC) == NULL) { - return; - } - /* clear unnecessary ZEND_FETCH_CLASS opcode */ - zend_del_literal(CG(active_op_array), fetch_class_opline->op2.constant); - MAKE_NOP(fetch_class_opline); + // TODO.AST interactive (not just here - also bpc etc!) + + init_op_array(op_array, ZEND_USER_FUNCTION, INITIAL_OP_ARRAY_SIZE TSRMLS_CC); - table = CG(class_table); - break; - } - case ZEND_VERIFY_ABSTRACT_CLASS: - case ZEND_ADD_INTERFACE: - case ZEND_ADD_TRAIT: - case ZEND_BIND_TRAITS: - /* We currently don't early-bind classes that implement interfaces */ - /* Classes with traits are handled exactly the same, no early-bind here */ - return; - default: - zend_error(E_COMPILE_ERROR, "Invalid binding type"); - return; + op_array->fn_flags |= decl->flags; + op_array->line_start = decl->start_lineno; + op_array->line_end = decl->end_lineno; + if (decl->doc_comment) { + op_array->doc_comment = zend_string_copy(decl->doc_comment); + } + if (decl->kind == ZEND_AST_CLOSURE) { + op_array->fn_flags |= ZEND_ACC_CLOSURE; } - zend_hash_quick_del(table, Z_STRVAL(CONSTANT(opline->op1.constant)), Z_STRLEN(CONSTANT(opline->op1.constant)), Z_HASH_P(&CONSTANT(opline->op1.constant))); - zend_del_literal(CG(active_op_array), opline->op1.constant); - zend_del_literal(CG(active_op_array), opline->op2.constant); - MAKE_NOP(opline); -} -/* }}} */ + if (is_method) { + zend_bool has_body = stmt_ast != NULL; + zend_begin_method_decl(op_array, decl->name, has_body TSRMLS_CC); + } else { + zend_begin_func_decl(result, op_array, decl TSRMLS_CC); + } -ZEND_API void zend_do_delayed_early_binding(const zend_op_array *op_array TSRMLS_DC) /* {{{ */ -{ - if (op_array->early_binding != -1) { - zend_bool orig_in_compilation = CG(in_compilation); - zend_uint opline_num = op_array->early_binding; - zend_class_entry **pce; + CG(active_op_array) = op_array; + zend_stack_push(&CG(context_stack), (void *) &CG(context)); + zend_init_compiler_context(TSRMLS_C); - CG(in_compilation) = 1; - while (opline_num != -1) { - if (zend_lookup_class(Z_STRVAL_P(op_array->opcodes[opline_num-1].op2.zv), Z_STRLEN_P(op_array->opcodes[opline_num-1].op2.zv), &pce TSRMLS_CC) == SUCCESS) { - do_bind_inherited_class(op_array, &op_array->opcodes[opline_num], EG(class_table), *pce, 0 TSRMLS_CC); - } - opline_num = op_array->opcodes[opline_num].result.opline_num; - } - CG(in_compilation) = orig_in_compilation; + if (CG(compiler_options) & ZEND_COMPILE_EXTENDED_INFO) { + zend_op *opline_ext = zend_emit_op(NULL, ZEND_EXT_NOP, NULL, NULL TSRMLS_CC); + opline_ext->lineno = decl->start_lineno; } -} -/* }}} */ -void zend_do_boolean_or_begin(znode *expr1, znode *op_token TSRMLS_DC) /* {{{ */ -{ - int next_op_number = get_next_op_number(CG(active_op_array)); - zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); + { + /* Push a separator to the loop variable stack */ + znode dummy_var; + dummy_var.op_type = IS_UNUSED; - opline->opcode = ZEND_JMPNZ_EX; - if (expr1->op_type == IS_TMP_VAR) { - SET_NODE(opline->result, expr1); - } else { - opline->result.var = get_temporary_variable(CG(active_op_array)); - opline->result_type = IS_TMP_VAR; + zend_stack_push(&CG(loop_var_stack), (void *) &dummy_var); } - SET_NODE(opline->op1, expr1); - SET_UNUSED(opline->op2); - op_token->u.op.opline_num = next_op_number; + zend_compile_params(params_ast TSRMLS_CC); + if (uses_ast) { + zend_compile_closure_uses(uses_ast TSRMLS_CC); + } + zend_compile_stmt(stmt_ast TSRMLS_CC); - GET_NODE(expr1, opline->result); -} -/* }}} */ + if (is_method) { + zend_check_magic_method_implementation( + CG(active_class_entry), (zend_function *) op_array, E_COMPILE_ERROR TSRMLS_CC); + } -void zend_do_boolean_or_end(znode *result, const znode *expr1, const znode *expr2, znode *op_token TSRMLS_DC) /* {{{ */ -{ - zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); + zend_do_extended_info(TSRMLS_C); + zend_emit_final_return(NULL TSRMLS_CC); - *result = *expr1; /* we saved the original result in expr1 */ - opline->opcode = ZEND_BOOL; - SET_NODE(opline->result, result); - SET_NODE(opline->op1, expr2); - SET_UNUSED(opline->op2); + pass_two(CG(active_op_array) TSRMLS_CC); + zend_release_labels(0 TSRMLS_CC); + + /* Pop the loop variable stack separator */ + zend_stack_del_top(&CG(loop_var_stack)); - CG(active_op_array)->opcodes[op_token->u.op.opline_num].op2.opline_num = get_next_op_number(CG(active_op_array)); + CG(active_op_array) = orig_op_array; } /* }}} */ -void zend_do_boolean_and_begin(znode *expr1, znode *op_token TSRMLS_DC) /* {{{ */ +void zend_compile_prop_decl(zend_ast *ast TSRMLS_DC) /* {{{ */ { - int next_op_number = get_next_op_number(CG(active_op_array)); - zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); + zend_ast_list *list = zend_ast_get_list(ast); + uint32_t flags = list->attr; + zend_class_entry *ce = CG(active_class_entry); + uint32_t i, children = list->children; + zend_string *doc_comment = NULL; - opline->opcode = ZEND_JMPZ_EX; - if (expr1->op_type == IS_TMP_VAR) { - SET_NODE(opline->result, expr1); - } else { - opline->result.var = get_temporary_variable(CG(active_op_array)); - opline->result_type = IS_TMP_VAR; + if (ce->ce_flags & ZEND_ACC_INTERFACE) { + zend_error_noreturn(E_COMPILE_ERROR, "Interfaces may not include member variables"); } - SET_NODE(opline->op1, expr1); - SET_UNUSED(opline->op2); - op_token->u.op.opline_num = next_op_number; + if (flags & ZEND_ACC_ABSTRACT) { + zend_error_noreturn(E_COMPILE_ERROR, "Properties cannot be declared abstract"); + } - GET_NODE(expr1, opline->result); -} -/* }}} */ + /* Doc comment has been appended as last element in property list */ + if (list->child[children - 1]->kind == ZEND_AST_ZVAL) { + doc_comment = zend_string_copy(zend_ast_get_str(list->child[children - 1])); + children -= 1; + } -void zend_do_boolean_and_end(znode *result, const znode *expr1, const znode *expr2, const znode *op_token TSRMLS_DC) /* {{{ */ -{ - zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); + for (i = 0; i < children; ++i) { + zend_ast *prop_ast = list->child[i]; + zend_ast *name_ast = prop_ast->child[0]; + zend_ast *value_ast = prop_ast->child[1]; + zend_string *name = zend_ast_get_str(name_ast); + zval value_zv; - *result = *expr1; /* we saved the original result in expr1 */ - opline->opcode = ZEND_BOOL; - SET_NODE(opline->result, result); - SET_NODE(opline->op1, expr2); - SET_UNUSED(opline->op2); + if (flags & ZEND_ACC_FINAL) { + zend_error_noreturn(E_COMPILE_ERROR, "Cannot declare property %s::$%s final, " + "the final modifier is allowed only for methods and classes", + ce->name->val, name->val); + } - CG(active_op_array)->opcodes[op_token->u.op.opline_num].op2.opline_num = get_next_op_number(CG(active_op_array)); -} -/* }}} */ + if (zend_hash_exists(&ce->properties_info, name)) { + zend_error_noreturn(E_COMPILE_ERROR, "Cannot redeclare %s::$%s", + ce->name->val, name->val); + } -void zend_do_do_while_begin(TSRMLS_D) /* {{{ */ -{ - do_begin_loop(TSRMLS_C); - INC_BPC(CG(active_op_array)); + if (value_ast) { + zend_const_expr_to_zval(&value_zv, value_ast TSRMLS_CC); + } else { + ZVAL_NULL(&value_zv); + } + + name = zend_new_interned_string_safe(name TSRMLS_CC); + zend_declare_property_ex(ce, name, &value_zv, flags, doc_comment TSRMLS_CC); + + /* Doc comment is only assigned to first property */ + doc_comment = NULL; + } } /* }}} */ -void zend_do_do_while_end(const znode *do_token, const znode *expr_open_bracket, const znode *expr TSRMLS_DC) /* {{{ */ +void zend_compile_class_const_decl(zend_ast *ast TSRMLS_DC) /* {{{ */ { - zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); + zend_ast_list *list = zend_ast_get_list(ast); + zend_class_entry *ce = CG(active_class_entry); + uint32_t i; - opline->opcode = ZEND_JMPNZ; - SET_NODE(opline->op1, expr); - opline->op2.opline_num = do_token->u.op.opline_num; - SET_UNUSED(opline->op2); + for (i = 0; i < list->children; ++i) { + zend_ast *const_ast = list->child[i]; + zend_ast *name_ast = const_ast->child[0]; + zend_ast *value_ast = const_ast->child[1]; + zend_string *name = zend_ast_get_str(name_ast); + zval value_zv; + + if (ZEND_CE_IS_TRAIT(ce)) { + zend_error_noreturn(E_COMPILE_ERROR, "Traits cannot have constants"); + return; + } + + zend_const_expr_to_zval(&value_zv, value_ast TSRMLS_CC); - do_end_loop(expr_open_bracket->u.op.opline_num, 0 TSRMLS_CC); + name = zend_new_interned_string_safe(name TSRMLS_CC); + if (zend_hash_add(&ce->constants_table, name, &value_zv) == NULL) { + zend_error_noreturn(E_COMPILE_ERROR, "Cannot redefine class constant %s::%s", + ce->name->val, name->val); + } - DEC_BPC(CG(active_op_array)); + if (Z_CONSTANT(value_zv)) { + ce->ce_flags &= ~ZEND_ACC_CONSTANTS_UPDATED; + } + } } /* }}} */ -void zend_do_brk_cont(zend_uchar op, const znode *expr TSRMLS_DC) /* {{{ */ +static zend_trait_method_reference *zend_compile_method_ref(zend_ast *ast TSRMLS_DC) /* {{{ */ { - zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); + zend_ast *class_ast = ast->child[0]; + zend_ast *method_ast = ast->child[1]; - opline->opcode = op; - opline->op1.opline_num = CG(context).current_brk_cont; - SET_UNUSED(opline->op1); - if (expr) { - if (expr->op_type != IS_CONST) { - zend_error(E_COMPILE_ERROR, "'%s' operator with non-constant operand is no longer supported", op == ZEND_BRK ? "break" : "continue"); - } else if (Z_TYPE(expr->u.constant) != IS_LONG || Z_LVAL(expr->u.constant) < 1) { - zend_error(E_COMPILE_ERROR, "'%s' operator accepts only positive numbers", op == ZEND_BRK ? "break" : "continue"); - } - SET_NODE(opline->op2, expr); + zend_trait_method_reference *method_ref = emalloc(sizeof(zend_trait_method_reference)); + method_ref->ce = NULL; + method_ref->method_name = zend_string_copy(zend_ast_get_str(method_ast)); + + if (class_ast) { + method_ref->class_name = zend_resolve_class_name_ast(class_ast TSRMLS_CC); } else { - LITERAL_LONG(opline->op2, 1); - opline->op2_type = IS_CONST; + method_ref->class_name = NULL; } + + return method_ref; } /* }}} */ -void zend_do_switch_cond(const znode *cond TSRMLS_DC) /* {{{ */ +static zend_string **zend_compile_name_list(zend_ast *ast TSRMLS_DC) /* {{{ */ { - zend_switch_entry switch_entry; + zend_ast_list *list = zend_ast_get_list(ast); + zend_string **names = safe_emalloc(sizeof(zend_string *), list->children + 1, 0); + uint32_t i; - switch_entry.cond = *cond; - switch_entry.default_case = -1; - switch_entry.control_var = -1; - zend_stack_push(&CG(switch_cond_stack), (void *) &switch_entry, sizeof(switch_entry)); + for (i = 0; i < list->children; ++i) { + zend_ast *name_ast = list->child[i]; + names[i] = zend_resolve_class_name_ast(name_ast TSRMLS_CC); + } - do_begin_loop(TSRMLS_C); + names[list->children] = NULL; - INC_BPC(CG(active_op_array)); + return names; } /* }}} */ -void zend_do_switch_end(const znode *case_list TSRMLS_DC) /* {{{ */ +static void zend_compile_trait_precedence(zend_ast *ast TSRMLS_DC) /* {{{ */ { - zend_op *opline; - zend_switch_entry *switch_entry_ptr; + zend_ast *method_ref_ast = ast->child[0]; + zend_ast *insteadof_ast = ast->child[1]; + + zend_trait_precedence *precedence = emalloc(sizeof(zend_trait_precedence)); + precedence->trait_method = zend_compile_method_ref(method_ref_ast TSRMLS_CC); + precedence->exclude_from_classes + = (void *) zend_compile_name_list(insteadof_ast TSRMLS_CC); - zend_stack_top(&CG(switch_cond_stack), (void **) &switch_entry_ptr); + zend_add_to_list(&CG(active_class_entry)->trait_precedences, precedence TSRMLS_CC); +} +/* }}} */ - /* add code to jmp to default case */ - if (switch_entry_ptr->default_case != -1) { - opline = get_next_op(CG(active_op_array) TSRMLS_CC); - opline->opcode = ZEND_JMP; - SET_UNUSED(opline->op1); - SET_UNUSED(opline->op2); - opline->op1.opline_num = switch_entry_ptr->default_case; - } +static void zend_compile_trait_alias(zend_ast *ast TSRMLS_DC) /* {{{ */ +{ + zend_ast *method_ref_ast = ast->child[0]; + zend_ast *alias_ast = ast->child[1]; + uint32_t modifiers = ast->attr; - if (case_list->op_type != IS_UNUSED) { /* non-empty switch */ - int next_op_number = get_next_op_number(CG(active_op_array)); + zend_trait_alias *alias; - CG(active_op_array)->opcodes[case_list->u.op.opline_num].op1.opline_num = next_op_number; + if (modifiers == ZEND_ACC_STATIC) { + zend_error_noreturn(E_COMPILE_ERROR, "Cannot use 'static' as method modifier"); + } else if (modifiers == ZEND_ACC_ABSTRACT) { + zend_error_noreturn(E_COMPILE_ERROR, "Cannot use 'abstract' as method modifier"); + } else if (modifiers == ZEND_ACC_FINAL) { + zend_error_noreturn(E_COMPILE_ERROR, "Cannot use 'final' as method modifier"); } - /* remember break/continue loop information */ - CG(active_op_array)->brk_cont_array[CG(context).current_brk_cont].cont = CG(active_op_array)->brk_cont_array[CG(context).current_brk_cont].brk = get_next_op_number(CG(active_op_array)); - CG(context).current_brk_cont = CG(active_op_array)->brk_cont_array[CG(context).current_brk_cont].parent; + alias = emalloc(sizeof(zend_trait_alias)); + alias->trait_method = zend_compile_method_ref(method_ref_ast TSRMLS_CC); + alias->modifiers = modifiers; - if (switch_entry_ptr->cond.op_type==IS_VAR || switch_entry_ptr->cond.op_type==IS_TMP_VAR) { - /* emit free for the switch condition*/ - opline = get_next_op(CG(active_op_array) TSRMLS_CC); - opline->opcode = (switch_entry_ptr->cond.op_type == IS_TMP_VAR) ? ZEND_FREE : ZEND_SWITCH_FREE; - SET_NODE(opline->op1, &switch_entry_ptr->cond); - SET_UNUSED(opline->op2); - } - if (switch_entry_ptr->cond.op_type == IS_CONST) { - zval_dtor(&switch_entry_ptr->cond.u.constant); + if (alias_ast) { + alias->alias = zend_string_copy(zend_ast_get_str(alias_ast)); + } else { + alias->alias = NULL; } - zend_stack_del_top(&CG(switch_cond_stack)); - - DEC_BPC(CG(active_op_array)); + zend_add_to_list(&CG(active_class_entry)->trait_aliases, alias TSRMLS_CC); } /* }}} */ -void zend_do_case_before_statement(const znode *case_list, znode *case_token, const znode *case_expr TSRMLS_DC) /* {{{ */ +void zend_compile_use_trait(zend_ast *ast TSRMLS_DC) /* {{{ */ { - zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); - int next_op_number; - zend_switch_entry *switch_entry_ptr; - znode result; + zend_ast_list *traits = zend_ast_get_list(ast->child[0]); + zend_ast_list *adaptations = ast->child[1] ? zend_ast_get_list(ast->child[1]) : NULL; + zend_class_entry *ce = CG(active_class_entry); + zend_op *opline; + uint32_t i; - zend_stack_top(&CG(switch_cond_stack), (void **) &switch_entry_ptr); + for (i = 0; i < traits->children; ++i) { + zend_ast *trait_ast = traits->child[i]; + zend_string *name = zend_ast_get_str(trait_ast); - if (switch_entry_ptr->control_var == -1) { - switch_entry_ptr->control_var = get_temporary_variable(CG(active_op_array)); - } - opline->opcode = ZEND_CASE; - opline->result.var = switch_entry_ptr->control_var; - opline->result_type = IS_TMP_VAR; - SET_NODE(opline->op1, &switch_entry_ptr->cond); - SET_NODE(opline->op2, case_expr); - if (opline->op1_type == IS_CONST) { - zval_copy_ctor(&CONSTANT(opline->op1.constant)); - } - GET_NODE(&result, opline->result); + if (ce->ce_flags & ZEND_ACC_INTERFACE) { + zend_error_noreturn(E_COMPILE_ERROR, "Cannot use traits inside of interfaces. " + "%s is used in %s", name->val, ce->name->val); + } - next_op_number = get_next_op_number(CG(active_op_array)); - opline = get_next_op(CG(active_op_array) TSRMLS_CC); - opline->opcode = ZEND_JMPZ; - SET_NODE(opline->op1, &result); - SET_UNUSED(opline->op2); - case_token->u.op.opline_num = next_op_number; + switch (zend_get_class_fetch_type(name)) { + case ZEND_FETCH_CLASS_SELF: + case ZEND_FETCH_CLASS_PARENT: + case ZEND_FETCH_CLASS_STATIC: + zend_error_noreturn(E_COMPILE_ERROR, "Cannot use '%s' as trait name " + "as it is reserved", name->val); + break; + } - if (case_list->op_type==IS_UNUSED) { - return; - } - next_op_number = get_next_op_number(CG(active_op_array)); - CG(active_op_array)->opcodes[case_list->u.op.opline_num].op1.opline_num = next_op_number; -} -/* }}} */ + opline = get_next_op(CG(active_op_array) TSRMLS_CC); + opline->opcode = ZEND_ADD_TRAIT; + SET_NODE(opline->op1, &CG(implementing_class)); + opline->extended_value = ZEND_FETCH_CLASS_TRAIT; + opline->op2_type = IS_CONST; + opline->op2.constant = zend_add_class_name_literal(CG(active_op_array), + zend_resolve_class_name_ast(trait_ast TSRMLS_CC) TSRMLS_CC); -void zend_do_case_after_statement(znode *result, const znode *case_token TSRMLS_DC) /* {{{ */ -{ - int next_op_number = get_next_op_number(CG(active_op_array)); - zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); + ce->num_traits++; + } - opline->opcode = ZEND_JMP; - SET_UNUSED(opline->op1); - SET_UNUSED(opline->op2); - result->u.op.opline_num = next_op_number; + if (!adaptations) { + return; + } - switch (CG(active_op_array)->opcodes[case_token->u.op.opline_num].opcode) { - case ZEND_JMP: - CG(active_op_array)->opcodes[case_token->u.op.opline_num].op1.opline_num = get_next_op_number(CG(active_op_array)); - break; - case ZEND_JMPZ: - CG(active_op_array)->opcodes[case_token->u.op.opline_num].op2.opline_num = get_next_op_number(CG(active_op_array)); - break; + for (i = 0; i < adaptations->children; ++i) { + zend_ast *adaptation_ast = adaptations->child[i]; + switch (adaptation_ast->kind) { + case ZEND_AST_TRAIT_PRECEDENCE: + zend_compile_trait_precedence(adaptation_ast TSRMLS_CC); + break; + case ZEND_AST_TRAIT_ALIAS: + zend_compile_trait_alias(adaptation_ast TSRMLS_CC); + break; + EMPTY_SWITCH_DEFAULT_CASE() + } } } /* }}} */ -void zend_do_default_before_statement(const znode *case_list, znode *default_token TSRMLS_DC) /* {{{ */ +void zend_compile_implements(znode *class_node, zend_ast *ast TSRMLS_DC) /* {{{ */ { - int next_op_number = get_next_op_number(CG(active_op_array)); - zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); - zend_switch_entry *switch_entry_ptr; + zend_ast_list *list = zend_ast_get_list(ast); + uint32_t i; + for (i = 0; i < list->children; ++i) { + zend_ast *class_ast = list->child[i]; + zend_string *name = zend_ast_get_str(class_ast); - zend_stack_top(&CG(switch_cond_stack), (void **) &switch_entry_ptr); + zend_op *opline; - opline->opcode = ZEND_JMP; - SET_UNUSED(opline->op1); - SET_UNUSED(opline->op2); - default_token->u.op.opline_num = next_op_number; + /* Traits can not implement interfaces */ + if (ZEND_CE_IS_TRAIT(CG(active_class_entry))) { + zend_error_noreturn(E_COMPILE_ERROR, "Cannot use '%s' as interface on '%s' " + "since it is a Trait", name->val, CG(active_class_entry)->name->val); + } - next_op_number = get_next_op_number(CG(active_op_array)); - switch_entry_ptr->default_case = next_op_number; + if (!zend_is_const_default_class_ref(class_ast)) { + zend_error_noreturn(E_COMPILE_ERROR, + "Cannot use '%s' as interface name as it is reserved", name->val); + } - if (case_list->op_type==IS_UNUSED) { - return; + opline = zend_emit_op(NULL, ZEND_ADD_INTERFACE, class_node, NULL TSRMLS_CC); + opline->extended_value = ZEND_FETCH_CLASS_INTERFACE; + opline->op2_type = IS_CONST; + opline->op2.constant = zend_add_class_name_literal(CG(active_op_array), + zend_resolve_class_name_ast(class_ast TSRMLS_CC) TSRMLS_CC); + + CG(active_class_entry)->num_interfaces++; } - CG(active_op_array)->opcodes[case_list->u.op.opline_num].op1.opline_num = next_op_number; } /* }}} */ -void zend_do_begin_class_declaration(const znode *class_token, znode *class_name, const znode *parent_class_name TSRMLS_DC) /* {{{ */ +void zend_compile_class_decl(zend_ast *ast TSRMLS_DC) /* {{{ */ { + zend_ast_decl *decl = (zend_ast_decl *) ast; + zend_ast *extends_ast = decl->child[0]; + zend_ast *implements_ast = decl->child[1]; + zend_ast *stmt_ast = decl->child[2]; + + zend_string *name = decl->name, *lcname, *import_name = NULL; + zend_class_entry *ce = zend_arena_alloc(&CG(arena), sizeof(zend_class_entry)); zend_op *opline; - int doing_inheritance = 0; - zend_class_entry *new_class_entry; - char *lcname; - int error = 0; - zval **ns_name, key; + znode declare_node, extends_node; if (CG(active_class_entry)) { - zend_error(E_COMPILE_ERROR, "Class declarations may not be nested"); + zend_error_noreturn(E_COMPILE_ERROR, "Class declarations may not be nested"); return; } - lcname = zend_str_tolower_dup(Z_STRVAL(class_name->u.constant), Z_STRLEN(class_name->u.constant)); - - if (!(strcmp(lcname, "self") && strcmp(lcname, "parent"))) { - efree(lcname); - zend_error(E_COMPILE_ERROR, "Cannot use '%s' as class name as it is reserved", Z_STRVAL(class_name->u.constant)); + if (ZEND_FETCH_CLASS_DEFAULT != zend_get_class_fetch_type(name)) { + zend_error_noreturn(E_COMPILE_ERROR, "Cannot use '%s' as class name as it is reserved", + name->val); } - /* Class name must not conflict with import names */ - if (CG(current_import) && - zend_hash_find(CG(current_import), lcname, Z_STRLEN(class_name->u.constant)+1, (void**)&ns_name) == SUCCESS) { - error = 1; + lcname = zend_string_alloc(name->len, 0); + zend_str_tolower_copy(lcname->val, name->val, name->len); + + if (CG(current_import)) { + import_name = zend_hash_find_ptr(CG(current_import), lcname); } if (CG(current_namespace)) { - /* Prefix class name with name of current namespace */ - znode tmp; + name = zend_prefix_with_ns(name TSRMLS_CC); + + zend_string_release(lcname); + lcname = zend_string_alloc(name->len, 0); + zend_str_tolower_copy(lcname->val, name->val, name->len); + } else { + zend_string_addref(name); + } - tmp.op_type = IS_CONST; - tmp.u.constant = *CG(current_namespace); - zval_copy_ctor(&tmp.u.constant); - zend_do_build_namespace_name(&tmp, &tmp, class_name TSRMLS_CC); - *class_name = tmp; - efree(lcname); - lcname = zend_str_tolower_dup(Z_STRVAL(class_name->u.constant), Z_STRLEN(class_name->u.constant)); + if (import_name && !zend_string_equals_str_ci(lcname, import_name)) { + zend_error_noreturn(E_COMPILE_ERROR, "Cannot declare class %s " + "because the name is already in use", name->val); } - if (error) { - char *tmp = zend_str_tolower_dup(Z_STRVAL_PP(ns_name), Z_STRLEN_PP(ns_name)); + name = zend_new_interned_string(name TSRMLS_CC); + lcname = zend_new_interned_string(lcname TSRMLS_CC); - if (Z_STRLEN_PP(ns_name) != Z_STRLEN(class_name->u.constant) || - memcmp(tmp, lcname, Z_STRLEN(class_name->u.constant))) { - zend_error(E_COMPILE_ERROR, "Cannot declare class %s because the name is already in use", Z_STRVAL(class_name->u.constant)); - } - efree(tmp); - } + ce->type = ZEND_USER_CLASS; + ce->name = name; + zend_initialize_class_data(ce, 1 TSRMLS_CC); - new_class_entry = emalloc(sizeof(zend_class_entry)); - new_class_entry->type = ZEND_USER_CLASS; - new_class_entry->name = zend_new_interned_string(Z_STRVAL(class_name->u.constant), Z_STRLEN(class_name->u.constant) + 1, 1 TSRMLS_CC); - new_class_entry->name_length = Z_STRLEN(class_name->u.constant); + ce->ce_flags |= decl->flags; + ce->info.user.filename = zend_get_compiled_filename(TSRMLS_C); + ce->info.user.line_start = decl->start_lineno; + ce->info.user.line_end = decl->end_lineno; + if (decl->doc_comment) { + ce->info.user.doc_comment = zend_string_copy(decl->doc_comment); + } - zend_initialize_class_data(new_class_entry, 1 TSRMLS_CC); - new_class_entry->info.user.filename = zend_get_compiled_filename(TSRMLS_C); - new_class_entry->info.user.line_start = class_token->u.op.opline_num; - new_class_entry->ce_flags |= class_token->EA; + if (extends_ast) { + if (ZEND_CE_IS_TRAIT(ce)) { + zend_error_noreturn(E_COMPILE_ERROR, "A trait (%s) cannot extend a class. " + "Traits can only be composed from other traits with the 'use' keyword. Error", + name->val); + } - if (parent_class_name && parent_class_name->op_type != IS_UNUSED) { - switch (parent_class_name->EA) { - case ZEND_FETCH_CLASS_SELF: - zend_error(E_COMPILE_ERROR, "Cannot use 'self' as class name as it is reserved"); - break; - case ZEND_FETCH_CLASS_PARENT: - zend_error(E_COMPILE_ERROR, "Cannot use 'parent' as class name as it is reserved"); - break; - case ZEND_FETCH_CLASS_STATIC: - zend_error(E_COMPILE_ERROR, "Cannot use 'static' as class name as it is reserved"); - break; - default: - break; + if (!zend_is_const_default_class_ref(extends_ast)) { + zend_string *extends_name = zend_ast_get_str(extends_ast); + zend_error_noreturn(E_COMPILE_ERROR, + "Cannot use '%s' as class name as it is reserved", extends_name->val); } - doing_inheritance = 1; + + zend_compile_class_ref(&extends_node, extends_ast TSRMLS_CC); } opline = get_next_op(CG(active_op_array) TSRMLS_CC); - opline->op1_type = IS_CONST; - build_runtime_defined_function_key(&key, lcname, new_class_entry->name_length TSRMLS_CC); - opline->op1.constant = zend_add_literal(CG(active_op_array), &key TSRMLS_CC); - Z_HASH_P(&CONSTANT(opline->op1.constant)) = zend_hash_func(Z_STRVAL(CONSTANT(opline->op1.constant)), Z_STRLEN(CONSTANT(opline->op1.constant))); + zend_make_var_result(&declare_node, opline TSRMLS_CC); - opline->op2_type = IS_CONST; + // TODO.AST drop this + GET_NODE(&CG(implementing_class), opline->result); - if (doing_inheritance) { - /* Make sure a trait does not try to extend a class */ - if ((new_class_entry->ce_flags & ZEND_ACC_TRAIT) == ZEND_ACC_TRAIT) { - zend_error(E_COMPILE_ERROR, "A trait (%s) cannot extend a class. Traits can only be composed from other traits with the 'use' keyword. Error", new_class_entry->name); - } + opline->op2_type = IS_CONST; + LITERAL_STR(opline->op2, lcname); - opline->extended_value = parent_class_name->u.op.var; + if (extends_ast) { opline->opcode = ZEND_DECLARE_INHERITED_CLASS; + opline->extended_value = extends_node.u.op.var; } else { opline->opcode = ZEND_DECLARE_CLASS; } - LITERAL_STRINGL(opline->op2, lcname, new_class_entry->name_length, 0); - CALCULATE_LITERAL_HASH(opline->op2.constant); - - zend_hash_quick_update(CG(class_table), Z_STRVAL(key), Z_STRLEN(key), Z_HASH_P(&CONSTANT(opline->op1.constant)), &new_class_entry, sizeof(zend_class_entry *), NULL); - CG(active_class_entry) = new_class_entry; + { + zend_string *key = zend_build_runtime_definition_key(lcname, decl->lex_pos TSRMLS_CC); - opline->result.var = get_temporary_variable(CG(active_op_array)); - opline->result_type = IS_VAR; - GET_NODE(&CG(implementing_class), opline->result); + opline->op1_type = IS_CONST; + LITERAL_STR(opline->op1, key); - if (CG(doc_comment)) { - CG(active_class_entry)->info.user.doc_comment = CG(doc_comment); - CG(active_class_entry)->info.user.doc_comment_len = CG(doc_comment_len); - CG(doc_comment) = NULL; - CG(doc_comment_len) = 0; + zend_hash_update_ptr(CG(class_table), key, ce); } -} -/* }}} */ -static void do_verify_abstract_class(TSRMLS_D) /* {{{ */ -{ - zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); + CG(active_class_entry) = ce; - opline->opcode = ZEND_VERIFY_ABSTRACT_CLASS; - SET_NODE(opline->op1, &CG(implementing_class)); - SET_UNUSED(opline->op2); -} -/* }}} */ + if (implements_ast) { + zend_compile_implements(&declare_node, implements_ast TSRMLS_CC); + } -void zend_do_end_class_declaration(const znode *class_token, const znode *parent_token TSRMLS_DC) /* {{{ */ -{ - zend_class_entry *ce = CG(active_class_entry); + zend_compile_stmt(stmt_ast TSRMLS_CC); if (ce->constructor) { ce->constructor->common.fn_flags |= ZEND_ACC_CTOR; if (ce->constructor->common.fn_flags & ZEND_ACC_STATIC) { - zend_error(E_COMPILE_ERROR, "Constructor %s::%s() cannot be static", ce->name, ce->constructor->common.function_name); + zend_error_noreturn(E_COMPILE_ERROR, "Constructor %s::%s() cannot be static", + ce->name->val, ce->constructor->common.function_name->val); } } if (ce->destructor) { ce->destructor->common.fn_flags |= ZEND_ACC_DTOR; if (ce->destructor->common.fn_flags & ZEND_ACC_STATIC) { - zend_error(E_COMPILE_ERROR, "Destructor %s::%s() cannot be static", ce->name, ce->destructor->common.function_name); + zend_error_noreturn(E_COMPILE_ERROR, "Destructor %s::%s() cannot be static", + ce->name->val, ce->destructor->common.function_name->val); } } if (ce->clone) { ce->clone->common.fn_flags |= ZEND_ACC_CLONE; if (ce->clone->common.fn_flags & ZEND_ACC_STATIC) { - zend_error(E_COMPILE_ERROR, "Clone method %s::%s() cannot be static", ce->name, ce->clone->common.function_name); + zend_error_noreturn(E_COMPILE_ERROR, "Clone method %s::%s() cannot be static", + ce->name->val, ce->clone->common.function_name->val); } } - ce->info.user.line_end = zend_get_compiled_lineno(TSRMLS_C); - /* Check for traits and proceed like with interfaces. * The only difference will be a combined handling of them in the end. * Thus, we need another opcode here. */ if (ce->num_traits > 0) { - zend_op *opline; - ce->traits = NULL; ce->num_traits = 0; ce->ce_flags |= ZEND_ACC_IMPLEMENT_TRAITS; - /* opcode generation: */ - opline = get_next_op(CG(active_op_array) TSRMLS_CC); - opline->opcode = ZEND_BIND_TRAITS; - SET_NODE(opline->op1, &CG(implementing_class)); + zend_emit_op(NULL, ZEND_BIND_TRAITS, &declare_node, NULL TSRMLS_CC); } if (!(ce->ce_flags & (ZEND_ACC_INTERFACE|ZEND_ACC_EXPLICIT_ABSTRACT_CLASS)) - && (parent_token || (ce->num_interfaces > 0))) { + && (extends_ast || ce->num_interfaces > 0) + ) { zend_verify_abstract_class(ce TSRMLS_CC); if (ce->num_interfaces && !(ce->ce_flags & ZEND_ACC_IMPLEMENT_TRAITS)) { - do_verify_abstract_class(TSRMLS_C); + zend_emit_op(NULL, ZEND_VERIFY_ABSTRACT_CLASS, &declare_node, NULL TSRMLS_CC); } } + /* Inherit interfaces; reset number to zero, we need it for above check and * will restore it during actual implementation. * The ZEND_ACC_IMPLEMENT_INTERFACES flag disables double call to @@ -5139,2077 +4612,1757 @@ void zend_do_end_class_declaration(const znode *class_token, const znode *parent } /* }}} */ -void zend_do_implements_interface(znode *interface_name TSRMLS_DC) /* {{{ */ +static HashTable *zend_get_import_ht(uint32_t type TSRMLS_DC) /* {{{ */ { - zend_op *opline; - - /* Traits can not implement interfaces */ - if ((CG(active_class_entry)->ce_flags & ZEND_ACC_TRAIT) == ZEND_ACC_TRAIT) { - zend_error(E_COMPILE_ERROR, "Cannot use '%s' as interface on '%s' since it is a Trait", - Z_STRVAL(interface_name->u.constant), - CG(active_class_entry)->name); - } - - switch (zend_get_class_fetch_type(Z_STRVAL(interface_name->u.constant), Z_STRLEN(interface_name->u.constant))) { - case ZEND_FETCH_CLASS_SELF: - case ZEND_FETCH_CLASS_PARENT: - case ZEND_FETCH_CLASS_STATIC: - zend_error(E_COMPILE_ERROR, "Cannot use '%s' as interface name as it is reserved", Z_STRVAL(interface_name->u.constant)); - break; - default: - break; + switch (type) { + case T_CLASS: + if (!CG(current_import)) { + CG(current_import) = emalloc(sizeof(HashTable)); + zend_hash_init(CG(current_import), 8, NULL, str_dtor, 0); + } + return CG(current_import); + case T_FUNCTION: + if (!CG(current_import_function)) { + CG(current_import_function) = emalloc(sizeof(HashTable)); + zend_hash_init(CG(current_import_function), 8, NULL, str_dtor, 0); + } + return CG(current_import_function); + case T_CONST: + if (!CG(current_import_const)) { + CG(current_import_const) = emalloc(sizeof(HashTable)); + zend_hash_init(CG(current_import_const), 8, NULL, str_dtor, 0); + } + return CG(current_import_const); + EMPTY_SWITCH_DEFAULT_CASE() } - - opline = get_next_op(CG(active_op_array) TSRMLS_CC); - opline->opcode = ZEND_ADD_INTERFACE; - SET_NODE(opline->op1, &CG(implementing_class)); - zend_resolve_class_name(interface_name TSRMLS_CC); - opline->extended_value = (opline->extended_value & ~ZEND_FETCH_CLASS_MASK) | ZEND_FETCH_CLASS_INTERFACE; - opline->op2_type = IS_CONST; - opline->op2.constant = zend_add_class_name_literal(CG(active_op_array), &interface_name->u.constant TSRMLS_CC); - CG(active_class_entry)->num_interfaces++; } /* }}} */ -void zend_do_use_trait(znode *trait_name TSRMLS_DC) /* {{{ */ +static char *zend_get_use_type_str(uint32_t type) /* {{{ */ { - zend_op *opline; - - if ((CG(active_class_entry)->ce_flags & ZEND_ACC_INTERFACE)) { - zend_error(E_COMPILE_ERROR, - "Cannot use traits inside of interfaces. %s is used in %s", - Z_STRVAL(trait_name->u.constant), CG(active_class_entry)->name); - } - - - switch (zend_get_class_fetch_type(Z_STRVAL(trait_name->u.constant), Z_STRLEN(trait_name->u.constant))) { - case ZEND_FETCH_CLASS_SELF: - case ZEND_FETCH_CLASS_PARENT: - case ZEND_FETCH_CLASS_STATIC: - zend_error(E_COMPILE_ERROR, "Cannot use '%s' as trait name as it is reserved", Z_STRVAL(trait_name->u.constant)); - break; - default: - break; + switch (type) { + case T_CLASS: + return ""; + case T_FUNCTION: + return " function"; + case T_CONST: + return " const"; + EMPTY_SWITCH_DEFAULT_CASE() } - - opline = get_next_op(CG(active_op_array) TSRMLS_CC); - opline->opcode = ZEND_ADD_TRAIT; - SET_NODE(opline->op1, &CG(implementing_class)); - zend_resolve_class_name(trait_name TSRMLS_CC); - opline->extended_value = ZEND_FETCH_CLASS_TRAIT; - opline->op2_type = IS_CONST; - opline->op2.constant = zend_add_class_name_literal(CG(active_op_array), &trait_name->u.constant TSRMLS_CC); - CG(active_class_entry)->num_traits++; } /* }}} */ -ZEND_API void zend_mangle_property_name(char **dest, int *dest_length, const char *src1, int src1_length, const char *src2, int src2_length, int internal) /* {{{ */ +static void zend_check_already_in_use(uint32_t type, zend_string *old_name, zend_string *new_name, zend_string *check_name) /* {{{ */ { - char *prop_name; - int prop_name_length; - - prop_name_length = 1 + src1_length + 1 + src2_length; - prop_name = pemalloc(prop_name_length + 1, internal); - prop_name[0] = '\0'; - memcpy(prop_name + 1, src1, src1_length+1); - memcpy(prop_name + 1 + src1_length + 1, src2, src2_length+1); + if (zend_string_equals_str_ci(old_name, check_name)) { + return; + } - *dest = prop_name; - *dest_length = prop_name_length; + zend_error_noreturn(E_COMPILE_ERROR, "Cannot use%s %s as %s because the name " + "is already in use", zend_get_use_type_str(type), old_name->val, new_name->val); } /* }}} */ -static int zend_strnlen(const char* s, int maxlen) /* {{{ */ +void zend_compile_use(zend_ast *ast TSRMLS_DC) /* {{{ */ { - int len = 0; - while (*s++ && maxlen--) len++; - return len; -} -/* }}} */ + zend_ast_list *list = zend_ast_get_list(ast); + uint32_t i; + zend_string *current_ns = CG(current_namespace); + uint32_t type = ast->attr; + HashTable *current_import = zend_get_import_ht(type TSRMLS_CC); + zend_bool case_sensitive = type == T_CONST; -ZEND_API int zend_unmangle_property_name_ex(const char *mangled_property, int len, const char **class_name, const char **prop_name, int *prop_len) /* {{{ */ -{ - int class_name_len; + for (i = 0; i < list->children; ++i) { + zend_ast *use_ast = list->child[i]; + zend_ast *old_name_ast = use_ast->child[0]; + zend_ast *new_name_ast = use_ast->child[1]; + zend_string *old_name = zend_ast_get_str(old_name_ast); + zend_string *new_name, *lookup_name; - *class_name = NULL; + if (new_name_ast) { + new_name = zend_string_copy(zend_ast_get_str(new_name_ast)); + } else { + const char *unqualified_name; + size_t unqualified_name_len; + if (zend_get_unqualified_name(old_name, &unqualified_name, &unqualified_name_len)) { + /* The form "use A\B" is eqivalent to "use A\B as B" */ + new_name = zend_string_init(unqualified_name, unqualified_name_len, 0); + } else { + new_name = zend_string_copy(old_name); - if (mangled_property[0]!=0) { - *prop_name = mangled_property; - if (prop_len) { - *prop_len = len; - } - return SUCCESS; - } - if (len < 3 || mangled_property[1]==0) { - zend_error(E_NOTICE, "Illegal member variable name"); - *prop_name = mangled_property; - if (prop_len) { - *prop_len = len; - } - return FAILURE; - } + if (!current_ns) { + if (type == T_CLASS && zend_string_equals_literal(new_name, "strict")) { + zend_error_noreturn(E_COMPILE_ERROR, + "You seem to be trying to use a different language..."); + } - class_name_len = zend_strnlen(mangled_property + 1, --len - 1) + 1; - if (class_name_len >= len || mangled_property[class_name_len]!=0) { - zend_error(E_NOTICE, "Corrupt member variable name"); - *prop_name = mangled_property; - if (prop_len) { - *prop_len = len + 1; + zend_error(E_WARNING, "The use statement with non-compound name '%s' " + "has no effect", new_name->val); + } + } } - return FAILURE; - } - *class_name = mangled_property + 1; - *prop_name = (*class_name) + class_name_len; - if (prop_len) { - *prop_len = len - class_name_len; - } - return SUCCESS; -} -/* }}} */ -void zend_do_declare_property(const znode *var_name, const znode *value, zend_uint access_type TSRMLS_DC) /* {{{ */ -{ - zval *property; - zend_property_info *existing_property_info; - char *comment = NULL; - int comment_len = 0; + if (case_sensitive) { + lookup_name = zend_string_copy(new_name); + } else { + lookup_name = zend_string_alloc(new_name->len, 0); + zend_str_tolower_copy(lookup_name->val, new_name->val, new_name->len); + } - if (CG(active_class_entry)->ce_flags & ZEND_ACC_INTERFACE) { - zend_error(E_COMPILE_ERROR, "Interfaces may not include member variables"); - } + if (type == T_CLASS && (zend_string_equals_literal(lookup_name, "self") + || zend_string_equals_literal(lookup_name, "parent")) + ) { + zend_error_noreturn(E_COMPILE_ERROR, "Cannot use %s as %s because '%s' " + "is a special class name", old_name->val, new_name->val, new_name->val); + } - if (access_type & ZEND_ACC_ABSTRACT) { - zend_error(E_COMPILE_ERROR, "Properties cannot be declared abstract"); - } + if (current_ns) { + zend_string *ns_name = zend_string_alloc(current_ns->len + 1 + new_name->len, 0); + zend_str_tolower_copy(ns_name->val, current_ns->val, current_ns->len); + ns_name->val[current_ns->len] = '\\'; + memcpy(ns_name->val + current_ns->len + 1, lookup_name->val, lookup_name->len); - if (access_type & ZEND_ACC_FINAL) { - zend_error(E_COMPILE_ERROR, "Cannot declare property %s::$%s final, the final modifier is allowed only for methods and classes", - CG(active_class_entry)->name, Z_STRVAL(var_name->u.constant)); - } + if (zend_hash_exists(CG(class_table), ns_name)) { + zend_check_already_in_use(type, old_name, new_name, ns_name); + } - if (zend_hash_find(&CG(active_class_entry)->properties_info, Z_STRVAL(var_name->u.constant), Z_STRLEN(var_name->u.constant)+1, (void **) &existing_property_info)==SUCCESS) { - zend_error(E_COMPILE_ERROR, "Cannot redeclare %s::$%s", CG(active_class_entry)->name, Z_STRVAL(var_name->u.constant)); - } - ALLOC_ZVAL(property); + zend_string_free(ns_name); + } else { + switch (type) { + case T_CLASS: + { + zend_class_entry *ce = zend_hash_find_ptr(CG(class_table), lookup_name); + if (ce && ce->type == ZEND_USER_CLASS + && ce->info.user.filename == CG(compiled_filename) + ) { + zend_check_already_in_use(type, old_name, new_name, lookup_name); + } + break; + } + case T_FUNCTION: + { + zend_function *fn = zend_hash_find_ptr(CG(function_table), lookup_name); + if (fn && fn->type == ZEND_USER_FUNCTION + && fn->op_array.filename == CG(compiled_filename) + ) { + zend_check_already_in_use(type, old_name, new_name, lookup_name); + } + break; + } + case T_CONST: + { + zend_string *filename = zend_hash_find_ptr(&CG(const_filenames), lookup_name); + if (filename && filename == CG(compiled_filename)) { + zend_check_already_in_use(type, old_name, new_name, lookup_name); + } + break; + } + EMPTY_SWITCH_DEFAULT_CASE() + } + } - if (value) { - *property = value->u.constant; - } else { - INIT_PZVAL(property); - Z_TYPE_P(property) = IS_NULL; - } + zend_string_addref(old_name); + if (!zend_hash_add_ptr(current_import, lookup_name, old_name)) { + zend_error_noreturn(E_COMPILE_ERROR, "Cannot use%s %s as %s because the name " + "is already in use", zend_get_use_type_str(type), old_name->val, new_name->val); + } - if (CG(doc_comment)) { - comment = CG(doc_comment); - comment_len = CG(doc_comment_len); - CG(doc_comment) = NULL; - CG(doc_comment_len) = 0; + zend_string_release(lookup_name); + zend_string_release(new_name); } - - zend_declare_property_ex(CG(active_class_entry), zend_new_interned_string(Z_STRVAL(var_name->u.constant), Z_STRLEN(var_name->u.constant) + 1, 0 TSRMLS_CC), Z_STRLEN(var_name->u.constant), property, access_type, comment, comment_len TSRMLS_CC); - efree(Z_STRVAL(var_name->u.constant)); } /* }}} */ -void zend_do_declare_class_constant(znode *var_name, const znode *value TSRMLS_DC) /* {{{ */ +void zend_compile_const_decl(zend_ast *ast TSRMLS_DC) /* {{{ */ { - zval *property; - const char *cname = NULL; - zend_ulong hash; + zend_ast_list *list = zend_ast_get_list(ast); + uint32_t i; + for (i = 0; i < list->children; ++i) { + zend_ast *const_ast = list->child[i]; + zend_ast *name_ast = const_ast->child[0]; + zend_ast *value_ast = const_ast->child[1]; + zend_string *name = zend_ast_get_str(name_ast); - if(Z_TYPE(value->u.constant) == IS_CONSTANT_ARRAY) { - zend_error(E_COMPILE_ERROR, "Arrays are not allowed in class constants"); - return; - } - if ((CG(active_class_entry)->ce_flags & ZEND_ACC_TRAIT) == ZEND_ACC_TRAIT) { - zend_error(E_COMPILE_ERROR, "Traits cannot have constants"); - return; - } + zend_string *import_name; + znode name_node, value_node; + zval *value_zv = &value_node.u.constant; - ALLOC_ZVAL(property); - *property = value->u.constant; + value_node.op_type = IS_CONST; + zend_const_expr_to_zval(value_zv, value_ast TSRMLS_CC); - cname = zend_new_interned_string(Z_STRVAL(var_name->u.constant), Z_STRLEN(var_name->u.constant)+1, 0 TSRMLS_CC); - hash = str_hash(cname, Z_STRLEN(var_name->u.constant)); - if (zend_hash_quick_add(&CG(active_class_entry)->constants_table, cname, Z_STRLEN(var_name->u.constant)+1, hash, &property, sizeof(zval *), NULL) == FAILURE) { - FREE_ZVAL(property); - zend_error(E_COMPILE_ERROR, "Cannot redefine class constant %s::%s", CG(active_class_entry)->name, Z_STRVAL(var_name->u.constant)); - } - FREE_PNODE(var_name); + if (zend_lookup_reserved_const(name->val, name->len TSRMLS_CC)) { + zend_error_noreturn(E_COMPILE_ERROR, "Cannot redeclare constant '%s'", name->val); + } - if (CG(doc_comment)) { - efree(CG(doc_comment)); - CG(doc_comment) = NULL; - CG(doc_comment_len) = 0; + name = zend_prefix_with_ns(name TSRMLS_CC); + name = zend_new_interned_string(name TSRMLS_CC); + + if (CG(current_import_const) + && (import_name = zend_hash_find_ptr(CG(current_import_const), name)) + ) { + if (!zend_string_equals(import_name, name)) { + zend_error(E_COMPILE_ERROR, "Cannot declare const %s because " + "the name is already in use", name->val); + } + } + + name_node.op_type = IS_CONST; + ZVAL_STR(&name_node.u.constant, name); + + zend_emit_op(NULL, ZEND_DECLARE_CONST, &name_node, &value_node TSRMLS_CC); + + zend_hash_add_ptr(&CG(const_filenames), name, CG(compiled_filename)); } } -/* }}} */ +/* }}}*/ -void zend_do_fetch_property(znode *result, znode *object, const znode *property TSRMLS_DC) /* {{{ */ +void zend_compile_namespace(zend_ast *ast TSRMLS_DC) /* {{{ */ { - zend_op opline; - zend_llist *fetch_list_ptr; - - zend_stack_top(&CG(bp_stack), (void **) &fetch_list_ptr); - - if (object->op_type == IS_CV) { - if (object->u.op.var == CG(active_op_array)->this_var) { - object->op_type = IS_UNUSED; /* this means $this for objects */ - } - } else if (fetch_list_ptr->count == 1) { - zend_llist_element *le = fetch_list_ptr->head; - zend_op *opline_ptr = (zend_op *) le->data; + zend_ast *name_ast = ast->child[0]; + zend_ast *stmt_ast = ast->child[1]; + zend_string *name; + zend_bool with_bracket = stmt_ast != NULL; - if (opline_is_fetch_this(opline_ptr TSRMLS_CC)) { - zend_del_literal(CG(active_op_array), opline_ptr->op1.constant); - SET_UNUSED(opline_ptr->op1); /* this means $this for objects */ - SET_NODE(opline_ptr->op2, property); - /* if it was usual fetch, we change it to object fetch */ - switch (opline_ptr->opcode) { - case ZEND_FETCH_W: - opline_ptr->opcode = ZEND_FETCH_OBJ_W; - break; - case ZEND_FETCH_R: - opline_ptr->opcode = ZEND_FETCH_OBJ_R; - break; - case ZEND_FETCH_RW: - opline_ptr->opcode = ZEND_FETCH_OBJ_RW; - break; - case ZEND_FETCH_IS: - opline_ptr->opcode = ZEND_FETCH_OBJ_IS; - break; - case ZEND_FETCH_UNSET: - opline_ptr->opcode = ZEND_FETCH_OBJ_UNSET; - break; - case ZEND_FETCH_FUNC_ARG: - opline_ptr->opcode = ZEND_FETCH_OBJ_FUNC_ARG; - break; - } - if (opline_ptr->op2_type == IS_CONST && Z_TYPE(CONSTANT(opline_ptr->op2.constant)) == IS_STRING) { - CALCULATE_LITERAL_HASH(opline_ptr->op2.constant); - GET_POLYMORPHIC_CACHE_SLOT(opline_ptr->op2.constant); + /* handle mixed syntax declaration or nested namespaces */ + if (!CG(has_bracketed_namespaces)) { + if (CG(current_namespace)) { + /* previous namespace declarations were unbracketed */ + if (with_bracket) { + zend_error_noreturn(E_COMPILE_ERROR, "Cannot mix bracketed namespace declarations " + "with unbracketed namespace declarations"); } - GET_NODE(result, opline_ptr->result); - return; + } + } else { + /* previous namespace declarations were bracketed */ + if (!with_bracket) { + zend_error_noreturn(E_COMPILE_ERROR, "Cannot mix bracketed namespace declarations " + "with unbracketed namespace declarations"); + } else if (CG(current_namespace) || CG(in_namespace)) { + zend_error_noreturn(E_COMPILE_ERROR, "Namespace declarations cannot be nested"); } } - if (zend_is_function_or_method_call(object)) { - init_op(&opline TSRMLS_CC); - opline.opcode = ZEND_SEPARATE; - SET_NODE(opline.op1, object); - SET_UNUSED(opline.op2); - opline.result_type = IS_VAR; - opline.result.var = opline.op1.var; - zend_llist_add_element(fetch_list_ptr, &opline); + if (((!with_bracket && !CG(current_namespace)) + || (with_bracket && !CG(has_bracketed_namespaces))) && CG(active_op_array)->last > 0 + ) { + /* ignore ZEND_EXT_STMT and ZEND_TICKS */ + uint32_t num = CG(active_op_array)->last; + while (num > 0 && + (CG(active_op_array)->opcodes[num-1].opcode == ZEND_EXT_STMT || + CG(active_op_array)->opcodes[num-1].opcode == ZEND_TICKS)) { + --num; + } + if (num > 0) { + zend_error_noreturn(E_COMPILE_ERROR, "Namespace declaration statement has to be " + "the very first statement in the script"); + } } - init_op(&opline TSRMLS_CC); - opline.opcode = ZEND_FETCH_OBJ_W; /* the backpatching routine assumes W */ - opline.result_type = IS_VAR; - opline.result.var = get_temporary_variable(CG(active_op_array)); - SET_NODE(opline.op1, object); - SET_NODE(opline.op2, property); - if (opline.op2_type == IS_CONST && Z_TYPE(CONSTANT(opline.op2.constant)) == IS_STRING) { - CALCULATE_LITERAL_HASH(opline.op2.constant); - GET_POLYMORPHIC_CACHE_SLOT(opline.op2.constant); + if (CG(current_namespace)) { + zend_string_release(CG(current_namespace)); } - GET_NODE(result, opline.result); - zend_llist_add_element(fetch_list_ptr, &opline); -} -/* }}} */ + if (name_ast) { + name = zend_ast_get_str(name_ast); -void zend_do_halt_compiler_register(TSRMLS_D) /* {{{ */ -{ - char *name, *cfilename; - char haltoff[] = "__COMPILER_HALT_OFFSET__"; - int len, clen; + if (ZEND_FETCH_CLASS_DEFAULT != zend_get_class_fetch_type(name)) { + zend_error_noreturn(E_COMPILE_ERROR, "Cannot use '%s' as namespace name", name->val); + } - if (CG(has_bracketed_namespaces) && CG(in_namespace)) { - zend_error(E_COMPILE_ERROR, "__HALT_COMPILER() can only be used from the outermost scope"); + CG(current_namespace) = zend_string_copy(name); + } else { + CG(current_namespace) = NULL; } - cfilename = zend_get_compiled_filename(TSRMLS_C); - clen = strlen(cfilename); - zend_mangle_property_name(&name, &len, haltoff, sizeof(haltoff) - 1, cfilename, clen, 0); - zend_register_long_constant(name, len+1, zend_get_scanned_file_offset(TSRMLS_C), CONST_CS, 0 TSRMLS_CC); - pefree(name, 0); + zend_reset_import_tables(TSRMLS_C); - if (CG(in_namespace)) { - zend_do_end_namespace(TSRMLS_C); + CG(in_namespace) = 1; + if (with_bracket) { + CG(has_bracketed_namespaces) = 1; } -} -/* }}} */ -void zend_do_push_object(const znode *object TSRMLS_DC) /* {{{ */ -{ - zend_stack_push(&CG(object_stack), object, sizeof(znode)); -} -/* }}} */ - -void zend_do_pop_object(znode *object TSRMLS_DC) /* {{{ */ -{ - if (object) { - znode *tmp; - - zend_stack_top(&CG(object_stack), (void **) &tmp); - *object = *tmp; + if (stmt_ast) { + zend_compile_top_stmt(stmt_ast TSRMLS_CC); + zend_end_namespace(TSRMLS_C); } - zend_stack_del_top(&CG(object_stack)); } /* }}} */ -void zend_do_begin_new_object(znode *new_token, znode *class_type TSRMLS_DC) /* {{{ */ +void zend_compile_halt_compiler(zend_ast *ast TSRMLS_DC) /* {{{ */ { - zend_op *opline; - unsigned char *ptr = NULL; + zend_ast *offset_ast = ast->child[0]; + zend_long offset = Z_LVAL_P(zend_ast_get_zval(offset_ast)); - new_token->u.op.opline_num = get_next_op_number(CG(active_op_array)); - opline = get_next_op(CG(active_op_array) TSRMLS_CC); - opline->opcode = ZEND_NEW; - opline->extended_value = CG(context).nested_calls; - opline->result_type = IS_VAR; - opline->result.var = get_temporary_variable(CG(active_op_array)); - SET_NODE(opline->op1, class_type); - SET_UNUSED(opline->op2); + zend_string *filename, *name; + const char const_name[] = "__COMPILER_HALT_OFFSET__"; - zend_stack_push(&CG(function_call_stack), (void *) &ptr, sizeof(unsigned char *)); - if (++CG(context).nested_calls > CG(active_op_array)->nested_calls) { - CG(active_op_array)->nested_calls = CG(context).nested_calls; + if (CG(has_bracketed_namespaces) && CG(in_namespace)) { + zend_error_noreturn(E_COMPILE_ERROR, + "__HALT_COMPILER() can only be used from the outermost scope"); } -} -/* }}} */ - -void zend_do_end_new_object(znode *result, const znode *new_token, const znode *argument_list TSRMLS_DC) /* {{{ */ -{ - znode ctor_result; - zend_do_end_function_call(NULL, &ctor_result, argument_list, 1, 0 TSRMLS_CC); - zend_do_free(&ctor_result TSRMLS_CC); + filename = zend_get_compiled_filename(TSRMLS_C); + name = zend_mangle_property_name(const_name, sizeof(const_name) - 1, + filename->val, filename->len, 0); - CG(active_op_array)->opcodes[new_token->u.op.opline_num].op2.opline_num = get_next_op_number(CG(active_op_array)); - GET_NODE(result, CG(active_op_array)->opcodes[new_token->u.op.opline_num].result); + zend_register_long_constant(name->val, name->len, offset, CONST_CS, 0 TSRMLS_CC); + zend_string_release(name); } /* }}} */ -static zend_constant* zend_get_ct_const(const zval *const_name, int all_internal_constants_substitution TSRMLS_DC) /* {{{ */ +static zend_bool zend_try_ct_eval_magic_const(zval *zv, zend_ast *ast TSRMLS_DC) /* {{{ */ { - zend_constant *c = NULL; - - if (Z_STRVAL_P(const_name)[0] == '\\') { - if (zend_hash_find(EG(zend_constants), Z_STRVAL_P(const_name)+1, Z_STRLEN_P(const_name), (void **) &c) == FAILURE) { - char *lookup_name = zend_str_tolower_dup(Z_STRVAL_P(const_name)+1, Z_STRLEN_P(const_name)-1); + zend_op_array *op_array = CG(active_op_array); + zend_class_entry *ce = CG(active_class_entry); - if (zend_hash_find(EG(zend_constants), lookup_name, Z_STRLEN_P(const_name), (void **) &c)==SUCCESS) { - if ((c->flags & CONST_CT_SUBST) && !(c->flags & CONST_CS)) { - efree(lookup_name); - return c; - } + switch (ast->attr) { + case T_LINE: + ZVAL_LONG(zv, ast->lineno); + break; + case T_FILE: + ZVAL_STR_COPY(zv, CG(compiled_filename)); + break; + case T_DIR: + { + zend_string *filename = CG(compiled_filename); + zend_string *dirname = zend_string_init(filename->val, filename->len, 0); + zend_dirname(dirname->val, dirname->len); + + if (strcmp(dirname->val, ".") == 0) { + dirname = zend_string_realloc(dirname, MAXPATHLEN, 0); +#if HAVE_GETCWD + VCWD_GETCWD(dirname->val, MAXPATHLEN); +#elif HAVE_GETWD + VCWD_GETWD(dirname->val); +#endif } - efree(lookup_name); - return NULL; - } - } else if (zend_hash_find(EG(zend_constants), Z_STRVAL_P(const_name), Z_STRLEN_P(const_name)+1, (void **) &c) == FAILURE) { - char *lookup_name = zend_str_tolower_dup(Z_STRVAL_P(const_name), Z_STRLEN_P(const_name)); - if (zend_hash_find(EG(zend_constants), lookup_name, Z_STRLEN_P(const_name)+1, (void **) &c)==SUCCESS) { - if ((c->flags & CONST_CT_SUBST) && !(c->flags & CONST_CS)) { - efree(lookup_name); - return c; - } + dirname->len = strlen(dirname->val); + ZVAL_STR(zv, dirname); + break; } - efree(lookup_name); - return NULL; - } - if (c->flags & CONST_CT_SUBST) { - return c; - } - if (all_internal_constants_substitution && - (c->flags & CONST_PERSISTENT) && - !(CG(compiler_options) & ZEND_COMPILE_NO_CONSTANT_SUBSTITUTION) && - Z_TYPE(c->value) != IS_CONSTANT && - Z_TYPE(c->value) != IS_CONSTANT_ARRAY) { - return c; - } - return NULL; -} -/* }}} */ - -static int zend_constant_ct_subst(znode *result, zval *const_name, int all_internal_constants_substitution TSRMLS_DC) /* {{{ */ -{ - zend_constant *c = zend_get_ct_const(const_name, all_internal_constants_substitution TSRMLS_CC); - - if (c) { - zval_dtor(const_name); - result->op_type = IS_CONST; - result->u.constant = c->value; - zval_copy_ctor(&result->u.constant); - INIT_PZVAL(&result->u.constant); - return 1; - } - return 0; -} -/* }}} */ - -void zend_do_fetch_constant(znode *result, znode *constant_container, znode *constant_name, int mode, zend_bool check_namespace TSRMLS_DC) /* {{{ */ -{ - znode tmp; - zend_op *opline; - int type; - char *compound; - ulong fetch_type = 0; - - if (constant_container) { - switch (mode) { - case ZEND_CT: - /* this is a class constant */ - type = zend_get_class_fetch_type(Z_STRVAL(constant_container->u.constant), Z_STRLEN(constant_container->u.constant)); - - if (ZEND_FETCH_CLASS_STATIC == type) { - zend_error(E_ERROR, "\"static::\" is not allowed in compile-time constants"); - } else if (ZEND_FETCH_CLASS_DEFAULT == type) { - zend_resolve_class_name(constant_container TSRMLS_CC); - } - zend_do_build_full_name(NULL, constant_container, constant_name, 1 TSRMLS_CC); - *result = *constant_container; - result->u.constant.type = IS_CONSTANT | fetch_type; - break; - case ZEND_RT: - if (constant_container->op_type == IS_CONST && - ZEND_FETCH_CLASS_DEFAULT == zend_get_class_fetch_type(Z_STRVAL(constant_container->u.constant), Z_STRLEN(constant_container->u.constant))) { - zend_resolve_class_name(constant_container TSRMLS_CC); - } else { - zend_do_fetch_class(&tmp, constant_container TSRMLS_CC); - constant_container = &tmp; - } - opline = get_next_op(CG(active_op_array) TSRMLS_CC); - opline->opcode = ZEND_FETCH_CONSTANT; - opline->result_type = IS_TMP_VAR; - opline->result.var = get_temporary_variable(CG(active_op_array)); - if (constant_container->op_type == IS_CONST) { - opline->op1_type = IS_CONST; - opline->op1.constant = zend_add_class_name_literal(CG(active_op_array), &constant_container->u.constant TSRMLS_CC); + case T_FUNC_C: + if (op_array && op_array->function_name) { + ZVAL_STR_COPY(zv, op_array->function_name); + } else { + ZVAL_EMPTY_STRING(zv); + } + break; + case T_METHOD_C: + if (ce) { + if (op_array && op_array->function_name) { + ZVAL_NEW_STR(zv, zend_concat3(ce->name->val, ce->name->len, "::", 2, + op_array->function_name->val, op_array->function_name->len)); } else { - SET_NODE(opline->op1, constant_container); + ZVAL_STR_COPY(zv, ce->name); } - SET_NODE(opline->op2, constant_name); - CALCULATE_LITERAL_HASH(opline->op2.constant); - if (opline->op1_type == IS_CONST) { - GET_CACHE_SLOT(opline->op2.constant); + } else if (op_array && op_array->function_name) { + ZVAL_STR_COPY(zv, op_array->function_name); + } else { + ZVAL_EMPTY_STRING(zv); + } + break; + case T_CLASS_C: + if (ce) { + if (ZEND_CE_IS_TRAIT(ce)) { + return 0; } else { - GET_POLYMORPHIC_CACHE_SLOT(opline->op2.constant); + ZVAL_STR_COPY(zv, ce->name); } - GET_NODE(result, opline->result); - break; - } - return; - } - /* namespace constant */ - /* only one that did not contain \ from the start can be converted to string if unknown */ - switch (mode) { - case ZEND_CT: - compound = memchr(Z_STRVAL(constant_name->u.constant), '\\', Z_STRLEN(constant_name->u.constant)); - /* this is a namespace constant, or an unprefixed constant */ - - if (zend_constant_ct_subst(result, &constant_name->u.constant, 0 TSRMLS_CC)) { - break; - } - - zend_resolve_non_class_name(constant_name, check_namespace TSRMLS_CC); - - if(!compound) { - fetch_type |= IS_CONSTANT_UNQUALIFIED; + } else { + ZVAL_EMPTY_STRING(zv); } - - *result = *constant_name; - result->u.constant.type = IS_CONSTANT | fetch_type; break; - case ZEND_RT: - compound = memchr(Z_STRVAL(constant_name->u.constant), '\\', Z_STRLEN(constant_name->u.constant)); - - zend_resolve_non_class_name(constant_name, check_namespace TSRMLS_CC); - - if(zend_constant_ct_subst(result, &constant_name->u.constant, 1 TSRMLS_CC)) { - break; + case T_TRAIT_C: + if (ce && ZEND_CE_IS_TRAIT(ce)) { + ZVAL_STR_COPY(zv, ce->name); + } else { + ZVAL_EMPTY_STRING(zv); } - - opline = get_next_op(CG(active_op_array) TSRMLS_CC); - opline->opcode = ZEND_FETCH_CONSTANT; - opline->result_type = IS_TMP_VAR; - opline->result.var = get_temporary_variable(CG(active_op_array)); - GET_NODE(result, opline->result); - SET_UNUSED(opline->op1); - opline->op2_type = IS_CONST; - if (compound) { - /* the name is unambiguous */ - opline->extended_value = 0; - opline->op2.constant = zend_add_const_name_literal(CG(active_op_array), &constant_name->u.constant, 0 TSRMLS_CC); + break; + case T_NS_C: + if (CG(current_namespace)) { + ZVAL_STR_COPY(zv, CG(current_namespace)); } else { - opline->extended_value = IS_CONSTANT_UNQUALIFIED; - if (CG(current_namespace)) { - opline->extended_value |= IS_CONSTANT_IN_NAMESPACE; - opline->op2.constant = zend_add_const_name_literal(CG(active_op_array), &constant_name->u.constant, 1 TSRMLS_CC); - } else { - opline->op2.constant = zend_add_const_name_literal(CG(active_op_array), &constant_name->u.constant, 0 TSRMLS_CC); - } + ZVAL_EMPTY_STRING(zv); } - GET_CACHE_SLOT(opline->op2.constant); break; + EMPTY_SWITCH_DEFAULT_CASE() } + + return 1; } /* }}} */ -void zend_do_shell_exec(znode *result, const znode *cmd TSRMLS_DC) /* {{{ */ +static inline void zend_ct_eval_binary_op(zval *result, uint32_t opcode, zval *op1, zval *op2 TSRMLS_DC) /* {{{ */ { - zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); - - switch (cmd->op_type) { - case IS_CONST: - case IS_TMP_VAR: - opline->opcode = ZEND_SEND_VAL; - break; - default: - opline->opcode = ZEND_SEND_VAR; - break; - } - SET_NODE(opline->op1, cmd); - opline->op2.opline_num = 1; - opline->extended_value = ZEND_DO_FCALL; - SET_UNUSED(opline->op2); - - /* FIXME: exception support not added to this op2 */ - opline = get_next_op(CG(active_op_array) TSRMLS_CC); - opline->opcode = ZEND_DO_FCALL; - opline->result.var = get_temporary_variable(CG(active_op_array)); - opline->result_type = IS_VAR; - LITERAL_STRINGL(opline->op1, estrndup("shell_exec", sizeof("shell_exec")-1), sizeof("shell_exec")-1, 0); - CALCULATE_LITERAL_HASH(opline->op1.constant); - opline->op1_type = IS_CONST; - GET_CACHE_SLOT(opline->op1.constant); - opline->extended_value = 1; - SET_UNUSED(opline->op2); - opline->op2.num = CG(context).nested_calls; - GET_NODE(result, opline->result); - - if (CG(context).nested_calls + 1 > CG(active_op_array)->nested_calls) { - CG(active_op_array)->nested_calls = CG(context).nested_calls + 1; - } - if (CG(context).used_stack + 2 > CG(active_op_array)->used_stack) { - CG(active_op_array)->used_stack = CG(context).used_stack + 2; - } + binary_op_type fn = get_binary_op(opcode); + fn(result, op1, op2 TSRMLS_CC); } /* }}} */ -void zend_do_init_array(znode *result, const znode *expr, const znode *offset, zend_bool is_ref TSRMLS_DC) /* {{{ */ +static inline void zend_ct_eval_unary_pm(zval *result, zend_ast_kind kind, zval *op TSRMLS_DC) /* {{{ */ { - zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); + binary_op_type fn = kind == ZEND_AST_UNARY_PLUS + ? add_function : sub_function; - opline->opcode = ZEND_INIT_ARRAY; - opline->result.var = get_temporary_variable(CG(active_op_array)); - opline->result_type = IS_TMP_VAR; - GET_NODE(result, opline->result); - if (expr) { - SET_NODE(opline->op1, expr); - if (offset) { - SET_NODE(opline->op2, offset); - if (opline->op2_type == IS_CONST && Z_TYPE(CONSTANT(opline->op2.constant)) == IS_STRING) { - ulong index; - int numeric = 0; - - ZEND_HANDLE_NUMERIC_EX(Z_STRVAL(CONSTANT(opline->op2.constant)), Z_STRLEN(CONSTANT(opline->op2.constant))+1, index, numeric = 1); - if (numeric) { - zval_dtor(&CONSTANT(opline->op2.constant)); - ZVAL_LONG(&CONSTANT(opline->op2.constant), index); - } else { - CALCULATE_LITERAL_HASH(opline->op2.constant); - } - } - } else { - SET_UNUSED(opline->op2); - } - } else { - SET_UNUSED(opline->op1); - SET_UNUSED(opline->op2); - } - opline->extended_value = is_ref; + zval left; + ZVAL_LONG(&left, 0); + fn(result, &left, op TSRMLS_CC); } /* }}} */ -void zend_do_add_array_element(znode *result, const znode *expr, const znode *offset, zend_bool is_ref TSRMLS_DC) /* {{{ */ +static inline void zend_ct_eval_greater(zval *result, zend_ast_kind kind, zval *op1, zval *op2 TSRMLS_DC) /* {{{ */ { - zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); - - opline->opcode = ZEND_ADD_ARRAY_ELEMENT; - SET_NODE(opline->result, result); - SET_NODE(opline->op1, expr); - if (offset) { - SET_NODE(opline->op2, offset); - if (opline->op2_type == IS_CONST && Z_TYPE(CONSTANT(opline->op2.constant)) == IS_STRING) { - ulong index; - int numeric = 0; - - ZEND_HANDLE_NUMERIC_EX(Z_STRVAL(CONSTANT(opline->op2.constant)), Z_STRLEN(CONSTANT(opline->op2.constant))+1, index, numeric = 1); - if (numeric) { - zval_dtor(&CONSTANT(opline->op2.constant)); - ZVAL_LONG(&CONSTANT(opline->op2.constant), index); - } else { - CALCULATE_LITERAL_HASH(opline->op2.constant); - } - } - } else { - SET_UNUSED(opline->op2); - } - opline->extended_value = is_ref; + binary_op_type fn = kind == ZEND_AST_GREATER + ? is_smaller_function : is_smaller_or_equal_function; + fn(result, op2, op1 TSRMLS_CC); } /* }}} */ -void zend_do_add_static_array_element(znode *result, znode *offset, const znode *expr) /* {{{ */ +static zend_bool zend_try_ct_eval_array(zval *result, zend_ast *ast TSRMLS_DC) /* {{{ */ { - zval *element; + zend_ast_list *list = zend_ast_get_list(ast); + uint32_t i; - ALLOC_ZVAL(element); - *element = expr->u.constant; - if (offset) { - switch (offset->u.constant.type & IS_CONSTANT_TYPE_MASK) { - case IS_CONSTANT: - /* Ugly hack to denote that this value has a constant index */ - Z_TYPE_P(element) |= IS_CONSTANT_INDEX; - Z_STRVAL(offset->u.constant) = erealloc(Z_STRVAL(offset->u.constant), Z_STRLEN(offset->u.constant)+3); - Z_STRVAL(offset->u.constant)[Z_STRLEN(offset->u.constant)+1] = Z_TYPE(offset->u.constant); - Z_STRVAL(offset->u.constant)[Z_STRLEN(offset->u.constant)+2] = 0; - zend_symtable_update(Z_ARRVAL(result->u.constant), Z_STRVAL(offset->u.constant), Z_STRLEN(offset->u.constant)+3, &element, sizeof(zval *), NULL); - zval_dtor(&offset->u.constant); - break; - case IS_STRING: - zend_symtable_update(Z_ARRVAL(result->u.constant), Z_STRVAL(offset->u.constant), Z_STRLEN(offset->u.constant)+1, &element, sizeof(zval *), NULL); - zval_dtor(&offset->u.constant); - break; - case IS_NULL: - zend_symtable_update(Z_ARRVAL(result->u.constant), "", 1, &element, sizeof(zval *), NULL); - break; - case IS_LONG: - case IS_BOOL: - zend_hash_index_update(Z_ARRVAL(result->u.constant), Z_LVAL(offset->u.constant), &element, sizeof(zval *), NULL); - break; - case IS_DOUBLE: - zend_hash_index_update(Z_ARRVAL(result->u.constant), zend_dval_to_lval(Z_DVAL(offset->u.constant)), &element, sizeof(zval *), NULL); - break; - case IS_CONSTANT_ARRAY: - zend_error(E_ERROR, "Illegal offset type"); - break; + /* First ensure that *all* child nodes are constant and by-val */ + for (i = 0; i < list->children; ++i) { + zend_ast *elem_ast = list->child[i]; + zend_bool by_ref = elem_ast->attr; + zend_eval_const_expr(&elem_ast->child[0] TSRMLS_CC); + zend_eval_const_expr(&elem_ast->child[1] TSRMLS_CC); + + if (by_ref || elem_ast->child[0]->kind != ZEND_AST_ZVAL + || (elem_ast->child[1] && elem_ast->child[1]->kind != ZEND_AST_ZVAL) + ) { + return 0; } - } else { - zend_hash_next_index_insert(Z_ARRVAL(result->u.constant), &element, sizeof(zval *), NULL); } -} -/* }}} */ -void zend_do_add_list_element(const znode *element TSRMLS_DC) /* {{{ */ -{ - list_llist_element lle; + array_init_size(result, list->children); + for (i = 0; i < list->children; ++i) { + zend_ast *elem_ast = list->child[i]; + zend_ast *value_ast = elem_ast->child[0]; + zend_ast *key_ast = elem_ast->child[1]; - if (element) { - zend_check_writable_variable(element); + zval *value = zend_ast_get_zval(value_ast); + if (Z_REFCOUNTED_P(value)) Z_ADDREF_P(value); - lle.var = *element; - zend_llist_copy(&lle.dimensions, &CG(dimension_llist)); - zend_llist_prepend_element(&CG(list_llist), &lle); + if (key_ast) { + zval *key = zend_ast_get_zval(key_ast); + switch (Z_TYPE_P(key)) { + case IS_LONG: + zend_hash_index_update(Z_ARRVAL_P(result), Z_LVAL_P(key), value); + break; + case IS_STRING: + zend_symtable_update(Z_ARRVAL_P(result), Z_STR_P(key), value); + break; + case IS_DOUBLE: + zend_hash_index_update(Z_ARRVAL_P(result), + zend_dval_to_lval(Z_DVAL_P(key)), value); + break; + case IS_FALSE: + zend_hash_index_update(Z_ARRVAL_P(result), 0, value); + break; + case IS_TRUE: + zend_hash_index_update(Z_ARRVAL_P(result), 1, value); + break; + case IS_NULL: + zend_hash_update(Z_ARRVAL_P(result), STR_EMPTY_ALLOC(), value); + break; + default: + zend_error(E_COMPILE_ERROR, "Illegal offset type"); + break; + } + } else { + zend_hash_next_index_insert(Z_ARRVAL_P(result), value); + } } - (*((int *)CG(dimension_llist).tail->data))++; -} -/* }}} */ -void zend_do_new_list_begin(TSRMLS_D) /* {{{ */ -{ - int current_dimension = 0; - zend_llist_add_element(&CG(dimension_llist), ¤t_dimension); + return 1; } /* }}} */ -void zend_do_new_list_end(TSRMLS_D) /* {{{ */ +void zend_compile_binary_op(znode *result, zend_ast *ast TSRMLS_DC) /* {{{ */ { - zend_llist_remove_tail(&CG(dimension_llist)); - (*((int *)CG(dimension_llist).tail->data))++; -} -/* }}} */ + zend_ast *left_ast = ast->child[0]; + zend_ast *right_ast = ast->child[1]; + uint32_t opcode = ast->attr; -void zend_do_list_init(TSRMLS_D) /* {{{ */ -{ - zend_stack_push(&CG(list_stack), &CG(list_llist), sizeof(zend_llist)); - zend_stack_push(&CG(list_stack), &CG(dimension_llist), sizeof(zend_llist)); - zend_llist_init(&CG(list_llist), sizeof(list_llist_element), NULL, 0); - zend_llist_init(&CG(dimension_llist), sizeof(int), NULL, 0); - zend_do_new_list_begin(TSRMLS_C); -} -/* }}} */ + znode left_node, right_node; + zend_compile_expr(&left_node, left_ast TSRMLS_CC); + zend_compile_expr(&right_node, right_ast TSRMLS_CC); -void zend_do_list_end(znode *result, znode *expr TSRMLS_DC) /* {{{ */ -{ - zend_llist_element *le; - zend_llist_element *dimension; - zend_op *opline; - znode last_container; - - le = CG(list_llist).head; - while (le) { - zend_llist *tmp_dimension_llist = &((list_llist_element *)le->data)->dimensions; - dimension = tmp_dimension_llist->head; - while (dimension) { - opline = get_next_op(CG(active_op_array) TSRMLS_CC); - if (dimension == tmp_dimension_llist->head) { /* first */ - last_container = *expr; - switch (expr->op_type) { - case IS_VAR: - case IS_CV: - opline->opcode = ZEND_FETCH_DIM_R; - break; - case IS_TMP_VAR: - opline->opcode = ZEND_FETCH_DIM_TMP_VAR; - break; - case IS_CONST: /* fetch_dim_tmp_var will handle this bogus fetch */ - zval_copy_ctor(&expr->u.constant); - opline->opcode = ZEND_FETCH_DIM_TMP_VAR; - break; - } - opline->extended_value |= ZEND_FETCH_ADD_LOCK; - } else { - opline->opcode = ZEND_FETCH_DIM_R; - } - opline->result_type = IS_VAR; - opline->result.var = get_temporary_variable(CG(active_op_array)); - SET_NODE(opline->op1, &last_container); - opline->op2_type = IS_CONST; - LITERAL_LONG(opline->op2, *((int *) dimension->data)); - GET_NODE(&last_container, opline->result); - dimension = dimension->next; - } - ((list_llist_element *) le->data)->value = last_container; - zend_llist_destroy(&((list_llist_element *) le->data)->dimensions); - zend_do_assign(result, &((list_llist_element *) le->data)->var, &((list_llist_element *) le->data)->value TSRMLS_CC); - zend_do_free(result TSRMLS_CC); - le = le->next; + if (left_node.op_type == IS_CONST && right_node.op_type == IS_CONST) { + result->op_type = IS_CONST; + zend_ct_eval_binary_op(&result->u.constant, opcode, + &left_node.u.constant, &right_node.u.constant TSRMLS_CC); + zval_ptr_dtor(&left_node.u.constant); + zval_ptr_dtor(&right_node.u.constant); + return; } - zend_llist_destroy(&CG(dimension_llist)); - zend_llist_destroy(&CG(list_llist)); - *result = *expr; - { - zend_llist *p; - /* restore previous lists */ - zend_stack_top(&CG(list_stack), (void **) &p); - CG(dimension_llist) = *p; - zend_stack_del_top(&CG(list_stack)); - zend_stack_top(&CG(list_stack), (void **) &p); - CG(list_llist) = *p; - zend_stack_del_top(&CG(list_stack)); - } + zend_emit_op_tmp(result, opcode, &left_node, &right_node TSRMLS_CC); } /* }}} */ -void zend_init_list(void *result, void *item TSRMLS_DC) /* {{{ */ +/* We do not use zend_compile_binary_op for this because we want to retain the left-to-right + * evaluation order. */ +void zend_compile_greater(znode *result, zend_ast *ast TSRMLS_DC) /* {{{ */ { - void** list = emalloc(sizeof(void*) * 2); + zend_ast *left_ast = ast->child[0]; + zend_ast *right_ast = ast->child[1]; + znode left_node, right_node; - list[0] = item; - list[1] = NULL; + ZEND_ASSERT(ast->kind == ZEND_AST_GREATER || ast->kind == ZEND_AST_GREATER_EQUAL); - *(void**)result = list; + zend_compile_expr(&left_node, left_ast TSRMLS_CC); + zend_compile_expr(&right_node, right_ast TSRMLS_CC); + + if (left_node.op_type == IS_CONST && right_node.op_type == IS_CONST) { + result->op_type = IS_CONST; + zend_ct_eval_greater(&result->u.constant, ast->kind, + &left_node.u.constant, &right_node.u.constant TSRMLS_CC); + zval_ptr_dtor(&left_node.u.constant); + zval_ptr_dtor(&right_node.u.constant); + return; + } + + zend_emit_op_tmp(result, + ast->kind == ZEND_AST_GREATER ? ZEND_IS_SMALLER : ZEND_IS_SMALLER_OR_EQUAL, + &right_node, &left_node TSRMLS_CC); } /* }}} */ -void zend_add_to_list(void *result, void *item TSRMLS_DC) /* {{{ */ +void zend_compile_unary_op(znode *result, zend_ast *ast TSRMLS_DC) /* {{{ */ { - void** list = *(void**)result; - size_t n = 0; - - if (list) { - while (list[n]) { - n++; - } - } + zend_ast *expr_ast = ast->child[0]; + uint32_t opcode = ast->attr; - list = erealloc(list, sizeof(void*) * (n+2)); + znode expr_node; + zend_compile_expr(&expr_node, expr_ast TSRMLS_CC); - list[n] = item; - list[n+1] = NULL; - - *(void**)result = list; + zend_emit_op_tmp(result, opcode, &expr_node, NULL TSRMLS_CC); } /* }}} */ -void zend_do_fetch_static_variable(znode *varname, const znode *static_assignment, int fetch_type TSRMLS_DC) /* {{{ */ +void zend_compile_unary_pm(znode *result, zend_ast *ast TSRMLS_DC) /* {{{ */ { - zval *tmp; - zend_op *opline; - znode lval; - znode result; + zend_ast *expr_ast = ast->child[0]; + znode zero_node, expr_node; - ALLOC_ZVAL(tmp); + ZEND_ASSERT(ast->kind == ZEND_AST_UNARY_PLUS || ast->kind == ZEND_AST_UNARY_MINUS); - if (static_assignment) { - *tmp = static_assignment->u.constant; - } else { - INIT_ZVAL(*tmp); - } - if (!CG(active_op_array)->static_variables) { - if (CG(active_op_array)->scope) { - CG(active_op_array)->scope->ce_flags |= ZEND_HAS_STATIC_IN_METHODS; - } - ALLOC_HASHTABLE(CG(active_op_array)->static_variables); - zend_hash_init(CG(active_op_array)->static_variables, 2, NULL, ZVAL_PTR_DTOR, 0); - } - zend_hash_update(CG(active_op_array)->static_variables, Z_STRVAL(varname->u.constant), Z_STRLEN(varname->u.constant)+1, &tmp, sizeof(zval *), NULL); - - if (varname->op_type == IS_CONST) { - if (Z_TYPE(varname->u.constant) != IS_STRING) { - convert_to_string(&varname->u.constant); - } - } + zend_compile_expr(&expr_node, expr_ast TSRMLS_CC); - opline = get_next_op(CG(active_op_array) TSRMLS_CC); - opline->opcode = (fetch_type == ZEND_FETCH_LEXICAL) ? ZEND_FETCH_R : ZEND_FETCH_W; /* the default mode must be Write, since fetch_simple_variable() is used to define function arguments */ - opline->result_type = IS_VAR; - opline->result.var = get_temporary_variable(CG(active_op_array)); - SET_NODE(opline->op1, varname); - if (opline->op1_type == IS_CONST) { - CALCULATE_LITERAL_HASH(opline->op1.constant); - } - SET_UNUSED(opline->op2); - opline->extended_value = ZEND_FETCH_STATIC; - GET_NODE(&result, opline->result); - - if (varname->op_type == IS_CONST) { - zval_copy_ctor(&varname->u.constant); + if (expr_node.op_type == IS_CONST) { + result->op_type = IS_CONST; + zend_ct_eval_unary_pm(&result->u.constant, ast->kind, &expr_node.u.constant TSRMLS_CC); + zval_ptr_dtor(&expr_node.u.constant); + return; } - fetch_simple_variable(&lval, varname, 0 TSRMLS_CC); /* Relies on the fact that the default fetch is BP_VAR_W */ - if (fetch_type == ZEND_FETCH_LEXICAL) { - znode dummy; + zero_node.op_type = IS_CONST; + ZVAL_LONG(&zero_node.u.constant, 0); - zend_do_begin_variable_parse(TSRMLS_C); - zend_do_assign(&dummy, &lval, &result TSRMLS_CC); - zend_do_free(&dummy TSRMLS_CC); - } else { - zend_do_assign_ref(NULL, &lval, &result TSRMLS_CC); - } - CG(active_op_array)->opcodes[CG(active_op_array)->last-1].result_type |= EXT_TYPE_UNUSED; + zend_emit_op_tmp(result, ast->kind == ZEND_AST_UNARY_PLUS ? ZEND_ADD : ZEND_SUB, + &zero_node, &expr_node TSRMLS_CC); } /* }}} */ -void zend_do_fetch_lexical_variable(znode *varname, zend_bool is_ref TSRMLS_DC) /* {{{ */ +void zend_compile_short_circuiting(znode *result, zend_ast *ast TSRMLS_DC) /* {{{ */ { - znode value; + zend_ast *left_ast = ast->child[0]; + zend_ast *right_ast = ast->child[1]; - if (Z_STRLEN(varname->u.constant) == sizeof("this") - 1 && - memcmp(Z_STRVAL(varname->u.constant), "this", sizeof("this") - 1) == 0) { - zend_error(E_COMPILE_ERROR, "Cannot use $this as lexical variable"); - return; - } + znode left_node, right_node; + zend_op *opline_jmpz, *opline_bool; + uint32_t opnum_jmpz; - value.op_type = IS_CONST; - ZVAL_NULL(&value.u.constant); - Z_TYPE(value.u.constant) |= is_ref ? IS_LEXICAL_REF : IS_LEXICAL_VAR; - Z_SET_REFCOUNT_P(&value.u.constant, 1); - Z_UNSET_ISREF_P(&value.u.constant); + ZEND_ASSERT(ast->kind == ZEND_AST_AND || ast->kind == ZEND_AST_OR); - zend_do_fetch_static_variable(varname, &value, is_ref ? ZEND_FETCH_STATIC : ZEND_FETCH_LEXICAL TSRMLS_CC); -} -/* }}} */ + zend_compile_expr(&left_node, left_ast TSRMLS_CC); -void zend_do_fetch_global_variable(znode *varname, const znode *static_assignment, int fetch_type TSRMLS_DC) /* {{{ */ -{ - zend_op *opline; - znode lval; - znode result; + opnum_jmpz = get_next_op_number(CG(active_op_array)); + opline_jmpz = zend_emit_op(NULL, ast->kind == ZEND_AST_AND ? ZEND_JMPZ_EX : ZEND_JMPNZ_EX, + &left_node, NULL TSRMLS_CC); - if (varname->op_type == IS_CONST) { - if (Z_TYPE(varname->u.constant) != IS_STRING) { - convert_to_string(&varname->u.constant); - } + if (left_node.op_type == IS_TMP_VAR) { + SET_NODE(opline_jmpz->result, &left_node); + } else { + opline_jmpz->result.var = get_temporary_variable(CG(active_op_array)); + opline_jmpz->result_type = IS_TMP_VAR; } + GET_NODE(result, opline_jmpz->result); - opline = get_next_op(CG(active_op_array) TSRMLS_CC); - opline->opcode = ZEND_FETCH_W; /* the default mode must be Write, since fetch_simple_variable() is used to define function arguments */ - opline->result_type = IS_VAR; - opline->result.var = get_temporary_variable(CG(active_op_array)); - SET_NODE(opline->op1, varname); - if (opline->op1_type == IS_CONST) { - CALCULATE_LITERAL_HASH(opline->op1.constant); - } - SET_UNUSED(opline->op2); - opline->extended_value = fetch_type; - GET_NODE(&result, opline->result); + zend_compile_expr(&right_node, right_ast TSRMLS_CC); - if (varname->op_type == IS_CONST) { - zval_copy_ctor(&varname->u.constant); - } - fetch_simple_variable(&lval, varname, 0 TSRMLS_CC); /* Relies on the fact that the default fetch is BP_VAR_W */ + opline_bool = zend_emit_op(NULL, ZEND_BOOL, &right_node, NULL TSRMLS_CC); + SET_NODE(opline_bool->result, result); - zend_do_assign_ref(NULL, &lval, &result TSRMLS_CC); - CG(active_op_array)->opcodes[CG(active_op_array)->last-1].result_type |= EXT_TYPE_UNUSED; + zend_update_jump_target_to_next(opnum_jmpz TSRMLS_CC); } /* }}} */ -void zend_do_cast(znode *result, const znode *expr, int type TSRMLS_DC) /* {{{ */ +void zend_compile_post_incdec(znode *result, zend_ast *ast TSRMLS_DC) /* {{{ */ { - zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); + zend_ast *var_ast = ast->child[0]; + ZEND_ASSERT(ast->kind == ZEND_AST_POST_INC || ast->kind == ZEND_AST_POST_DEC); - opline->opcode = ZEND_CAST; - opline->result_type = IS_TMP_VAR; - opline->result.var = get_temporary_variable(CG(active_op_array)); - SET_NODE(opline->op1, expr); - SET_UNUSED(opline->op2); - opline->extended_value = type; - GET_NODE(result, opline->result); + if (var_ast->kind == ZEND_AST_PROP) { + zend_op *opline = zend_compile_prop_common(NULL, var_ast, BP_VAR_RW TSRMLS_CC); + opline->opcode = ast->kind == ZEND_AST_POST_INC ? ZEND_POST_INC_OBJ : ZEND_POST_DEC_OBJ; + zend_make_tmp_result(result, opline TSRMLS_CC); + } else { + znode var_node; + zend_compile_var(&var_node, var_ast, BP_VAR_RW TSRMLS_CC); + zend_emit_op_tmp(result, ast->kind == ZEND_AST_POST_INC ? ZEND_POST_INC : ZEND_POST_DEC, + &var_node, NULL TSRMLS_CC); + } } /* }}} */ -void zend_do_include_or_eval(int type, znode *result, const znode *op1 TSRMLS_DC) /* {{{ */ +void zend_compile_pre_incdec(znode *result, zend_ast *ast TSRMLS_DC) /* {{{ */ { - zend_do_extended_fcall_begin(TSRMLS_C); - { - zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); + zend_ast *var_ast = ast->child[0]; + ZEND_ASSERT(ast->kind == ZEND_AST_PRE_INC || ast->kind == ZEND_AST_PRE_DEC); - opline->opcode = ZEND_INCLUDE_OR_EVAL; - opline->result_type = IS_VAR; - opline->result.var = get_temporary_variable(CG(active_op_array)); - SET_NODE(opline->op1, op1); - SET_UNUSED(opline->op2); - opline->extended_value = type; - GET_NODE(result, opline->result); + if (var_ast->kind == ZEND_AST_PROP) { + zend_op *opline = zend_compile_prop_common(result, var_ast, BP_VAR_RW TSRMLS_CC); + opline->opcode = ast->kind == ZEND_AST_PRE_INC ? ZEND_PRE_INC_OBJ : ZEND_PRE_DEC_OBJ; + } else { + znode var_node; + zend_compile_var(&var_node, var_ast, BP_VAR_RW TSRMLS_CC); + zend_emit_op(result, ast->kind == ZEND_AST_PRE_INC ? ZEND_PRE_INC : ZEND_PRE_DEC, + &var_node, NULL TSRMLS_CC); } - zend_do_extended_fcall_end(TSRMLS_C); } /* }}} */ -void zend_do_indirect_references(znode *result, const znode *num_references, znode *variable TSRMLS_DC) /* {{{ */ +void zend_compile_cast(znode *result, zend_ast *ast TSRMLS_DC) /* {{{ */ { - int i; + zend_ast *expr_ast = ast->child[0]; + znode expr_node; + zend_op *opline; - zend_do_end_variable_parse(variable, BP_VAR_R, 0 TSRMLS_CC); - for (i=1; i<Z_LVAL(num_references->u.constant); i++) { - fetch_simple_variable_ex(result, variable, 0, ZEND_FETCH_R TSRMLS_CC); - *variable = *result; - } - zend_do_begin_variable_parse(TSRMLS_C); - fetch_simple_variable(result, variable, 1 TSRMLS_CC); - /* there is a chance someone is accessing $this */ - if (CG(active_op_array)->scope && CG(active_op_array)->this_var == -1) { - CG(active_op_array)->this_var = lookup_cv(CG(active_op_array), estrndup("this", sizeof("this")-1), sizeof("this")-1, THIS_HASHVAL TSRMLS_CC); - } + zend_compile_expr(&expr_node, expr_ast TSRMLS_CC); + + opline = zend_emit_op_tmp(result, ZEND_CAST, &expr_node, NULL TSRMLS_CC); + opline->extended_value = ast->attr; } /* }}} */ -void zend_do_unset(const znode *variable TSRMLS_DC) /* {{{ */ +static void zend_compile_shorthand_conditional(znode *result, zend_ast *ast TSRMLS_DC) /* {{{ */ { - zend_op *last_op; + zend_ast *cond_ast = ast->child[0]; + zend_ast *false_ast = ast->child[2]; - zend_check_writable_variable(variable); + znode cond_node, false_node; + zend_op *opline_jmp_set, *opline_qm_assign; + uint32_t opnum_jmp_set; - if (variable->op_type == IS_CV) { - zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); - opline->opcode = ZEND_UNSET_VAR; - SET_NODE(opline->op1, variable); - SET_UNUSED(opline->op2); - SET_UNUSED(opline->result); - opline->extended_value = ZEND_FETCH_LOCAL | ZEND_QUICK_SET; - } else { - last_op = &CG(active_op_array)->opcodes[get_next_op_number(CG(active_op_array))-1]; + ZEND_ASSERT(ast->child[1] == NULL); - switch (last_op->opcode) { - case ZEND_FETCH_UNSET: - last_op->opcode = ZEND_UNSET_VAR; - SET_UNUSED(last_op->result); - break; - case ZEND_FETCH_DIM_UNSET: - last_op->opcode = ZEND_UNSET_DIM; - SET_UNUSED(last_op->result); - break; - case ZEND_FETCH_OBJ_UNSET: - last_op->opcode = ZEND_UNSET_OBJ; - SET_UNUSED(last_op->result); - break; + zend_compile_expr(&cond_node, cond_ast TSRMLS_CC); - } - } + opnum_jmp_set = get_next_op_number(CG(active_op_array)); + zend_emit_op_tmp(result, ZEND_JMP_SET, &cond_node, NULL TSRMLS_CC); + + zend_compile_expr(&false_node, false_ast TSRMLS_CC); + + opline_jmp_set = &CG(active_op_array)->opcodes[opnum_jmp_set]; + opline_jmp_set->op2.opline_num = get_next_op_number(CG(active_op_array)) + 1; + opline_qm_assign = zend_emit_op_tmp(NULL, ZEND_QM_ASSIGN, &false_node, NULL TSRMLS_CC); + SET_NODE(opline_qm_assign->result, result); } /* }}} */ -void zend_do_isset_or_isempty(int type, znode *result, znode *variable TSRMLS_DC) /* {{{ */ +void zend_compile_conditional(znode *result, zend_ast *ast TSRMLS_DC) /* {{{ */ { - zend_op *last_op; + zend_ast *cond_ast = ast->child[0]; + zend_ast *true_ast = ast->child[1]; + zend_ast *false_ast = ast->child[2]; - zend_do_end_variable_parse(variable, BP_VAR_IS, 0 TSRMLS_CC); - - if (zend_is_function_or_method_call(variable)) { - if (type == ZEND_ISEMPTY) { - /* empty(func()) can be transformed to !func() */ - zend_do_unary_op(ZEND_BOOL_NOT, result, variable TSRMLS_CC); - } else { - zend_error(E_COMPILE_ERROR, "Cannot use isset() on the result of a function call (you can use \"null !== func()\" instead)"); - } + znode cond_node, true_node, false_node; + zend_op *opline_qm_assign1, *opline_qm_assign2; + uint32_t opnum_jmpz, opnum_jmp, opnum_qm_assign1; + if (!true_ast) { + zend_compile_shorthand_conditional(result, ast TSRMLS_CC); return; } + + zend_compile_expr(&cond_node, cond_ast TSRMLS_CC); - if (variable->op_type == IS_CV) { - last_op = get_next_op(CG(active_op_array) TSRMLS_CC); - last_op->opcode = ZEND_ISSET_ISEMPTY_VAR; - SET_NODE(last_op->op1, variable); - SET_UNUSED(last_op->op2); - last_op->result.var = get_temporary_variable(CG(active_op_array)); - last_op->extended_value = ZEND_FETCH_LOCAL | ZEND_QUICK_SET; - } else { - last_op = &CG(active_op_array)->opcodes[get_next_op_number(CG(active_op_array))-1]; - - switch (last_op->opcode) { - case ZEND_FETCH_IS: - last_op->opcode = ZEND_ISSET_ISEMPTY_VAR; - break; - case ZEND_FETCH_DIM_IS: - last_op->opcode = ZEND_ISSET_ISEMPTY_DIM_OBJ; - break; - case ZEND_FETCH_OBJ_IS: - last_op->opcode = ZEND_ISSET_ISEMPTY_PROP_OBJ; - break; - } - } - last_op->result_type = IS_TMP_VAR; - last_op->extended_value |= type; + opnum_jmpz = zend_emit_cond_jump(ZEND_JMPZ, &cond_node, 0 TSRMLS_CC); - GET_NODE(result, last_op->result); -} -/* }}} */ + zend_compile_expr(&true_node, true_ast TSRMLS_CC); -void zend_do_instanceof(znode *result, const znode *expr, const znode *class_znode, int type TSRMLS_DC) /* {{{ */ -{ - int last_op_number = get_next_op_number(CG(active_op_array)); - zend_op *opline; + opnum_qm_assign1 = get_next_op_number(CG(active_op_array)); + zend_emit_op_tmp(result, ZEND_QM_ASSIGN, &true_node, NULL TSRMLS_CC); - if (last_op_number > 0) { - opline = &CG(active_op_array)->opcodes[last_op_number-1]; - if (opline->opcode == ZEND_FETCH_CLASS) { - opline->extended_value |= ZEND_FETCH_CLASS_NO_AUTOLOAD; - } - } + opnum_jmp = zend_emit_jump(0 TSRMLS_CC); - if (expr->op_type == IS_CONST) { - zend_error(E_COMPILE_ERROR, "instanceof expects an object instance, constant given"); - } + zend_update_jump_target_to_next(opnum_jmpz TSRMLS_CC); - opline = get_next_op(CG(active_op_array) TSRMLS_CC); - opline->opcode = ZEND_INSTANCEOF; - opline->result_type = IS_TMP_VAR; - opline->result.var = get_temporary_variable(CG(active_op_array)); - SET_NODE(opline->op1, expr); + zend_compile_expr(&false_node, false_ast TSRMLS_CC); - SET_NODE(opline->op2, class_znode); + opline_qm_assign1 = &CG(active_op_array)->opcodes[opnum_qm_assign1]; + opline_qm_assign2 = zend_emit_op(NULL, opline_qm_assign1->opcode, &false_node, NULL TSRMLS_CC); + SET_NODE(opline_qm_assign2->result, result); - GET_NODE(result, opline->result); + zend_update_jump_target_to_next(opnum_jmp TSRMLS_CC); } /* }}} */ -void zend_do_foreach_begin(znode *foreach_token, znode *open_brackets_token, znode *array, znode *as_token, int variable TSRMLS_DC) /* {{{ */ +void zend_compile_coalesce(znode *result, zend_ast *ast TSRMLS_DC) /* {{{ */ { + zend_ast *expr_ast = ast->child[0]; + zend_ast *default_ast = ast->child[1]; + + znode expr_node, default_node; zend_op *opline; - zend_bool is_variable; - zend_op dummy_opline; + uint32_t opnum; - if (variable) { - if (zend_is_function_or_method_call(array)) { - is_variable = 0; - } else { - is_variable = 1; - } - /* save the location of FETCH_W instruction(s) */ - open_brackets_token->u.op.opline_num = get_next_op_number(CG(active_op_array)); - zend_do_end_variable_parse(array, BP_VAR_W, 0 TSRMLS_CC); - } else { - is_variable = 0; - open_brackets_token->u.op.opline_num = get_next_op_number(CG(active_op_array)); - } + zend_compile_var(&expr_node, expr_ast, BP_VAR_IS TSRMLS_CC); - /* save the location of FE_RESET */ - foreach_token->u.op.opline_num = get_next_op_number(CG(active_op_array)); + opnum = get_next_op_number(CG(active_op_array)); + zend_emit_op_tmp(result, ZEND_COALESCE, &expr_node, NULL TSRMLS_CC); - opline = get_next_op(CG(active_op_array) TSRMLS_CC); + zend_compile_expr(&default_node, default_ast TSRMLS_CC); - /* Preform array reset */ - opline->opcode = ZEND_FE_RESET; - opline->result_type = IS_VAR; - opline->result.var = get_temporary_variable(CG(active_op_array)); - SET_NODE(opline->op1, array); - SET_UNUSED(opline->op2); - opline->extended_value = is_variable ? ZEND_FE_RESET_VARIABLE : 0; + opline = zend_emit_op_tmp(NULL, ZEND_QM_ASSIGN, &default_node, NULL TSRMLS_CC); + SET_NODE(opline->result, result); - COPY_NODE(dummy_opline.result, opline->result); - zend_stack_push(&CG(foreach_copy_stack), (void *) &dummy_opline, sizeof(zend_op)); + opline = &CG(active_op_array)->opcodes[opnum]; + opline->op2.opline_num = get_next_op_number(CG(active_op_array)); +} +/* }}} */ - /* save the location of FE_FETCH */ - as_token->u.op.opline_num = get_next_op_number(CG(active_op_array)); +void zend_compile_print(znode *result, zend_ast *ast TSRMLS_DC) /* {{{ */ +{ + zend_ast *expr_ast = ast->child[0]; - opline = get_next_op(CG(active_op_array) TSRMLS_CC); - opline->opcode = ZEND_FE_FETCH; - opline->result_type = IS_VAR; - opline->result.var = get_temporary_variable(CG(active_op_array)); - COPY_NODE(opline->op1, dummy_opline.result); - opline->extended_value = 0; - SET_UNUSED(opline->op2); + znode expr_node; + zend_compile_expr(&expr_node, expr_ast TSRMLS_CC); - opline = get_next_op(CG(active_op_array) TSRMLS_CC); - opline->opcode = ZEND_OP_DATA; - SET_UNUSED(opline->op1); - SET_UNUSED(opline->op2); - SET_UNUSED(opline->result); + zend_emit_op_tmp(result, ZEND_PRINT, &expr_node, NULL TSRMLS_CC); } /* }}} */ -void zend_do_foreach_cont(znode *foreach_token, const znode *open_brackets_token, const znode *as_token, znode *value, znode *key TSRMLS_DC) /* {{{ */ +void zend_compile_exit(znode *result, zend_ast *ast TSRMLS_DC) /* {{{ */ { - zend_op *opline; - znode dummy, value_node; - zend_bool assign_by_ref=0; + zend_ast *expr_ast = ast->child[0]; - opline = &CG(active_op_array)->opcodes[as_token->u.op.opline_num]; - if (key->op_type != IS_UNUSED) { - znode *tmp; + if (expr_ast) { + znode expr_node; + zend_compile_expr(&expr_node, expr_ast TSRMLS_CC); + zend_emit_op(NULL, ZEND_EXIT, &expr_node, NULL TSRMLS_CC); + } else { + zend_emit_op(NULL, ZEND_EXIT, NULL, NULL TSRMLS_CC); + } - /* switch between the key and value... */ - tmp = key; - key = value; - value = tmp; + result->op_type = IS_CONST; + ZVAL_BOOL(&result->u.constant, 1); +} +/* }}} */ - /* Mark extended_value in case both key and value are being used */ - opline->extended_value |= ZEND_FE_FETCH_WITH_KEY; - } +void zend_compile_yield(znode *result, zend_ast *ast TSRMLS_DC) /* {{{ */ +{ + zend_ast *value_ast = ast->child[0]; + zend_ast *key_ast = ast->child[1]; - if ((key->op_type != IS_UNUSED)) { - if (key->EA & ZEND_PARSED_REFERENCE_VARIABLE) { - zend_error(E_COMPILE_ERROR, "Key element cannot be a reference"); - } - if (key->EA & ZEND_PARSED_LIST_EXPR) { - zend_error(E_COMPILE_ERROR, "Cannot use list as key element"); - } + znode value_node, key_node; + znode *value_node_ptr = NULL, *key_node_ptr = NULL; + zend_op *opline; + zend_bool returns_by_ref = (CG(active_op_array)->fn_flags & ZEND_ACC_RETURN_REFERENCE) != 0; + + if (!CG(active_op_array)->function_name) { + zend_error_noreturn(E_COMPILE_ERROR, + "The \"yield\" expression can only be used inside a function"); } - if (value->EA & ZEND_PARSED_REFERENCE_VARIABLE) { - assign_by_ref = 1; + CG(active_op_array)->fn_flags |= ZEND_ACC_GENERATOR; - /* Mark extended_value for assign-by-reference */ - opline->extended_value |= ZEND_FE_FETCH_BYREF; - CG(active_op_array)->opcodes[foreach_token->u.op.opline_num].extended_value |= ZEND_FE_RESET_REFERENCE; - } else { - zend_op *fetch = &CG(active_op_array)->opcodes[foreach_token->u.op.opline_num]; - zend_op *end = &CG(active_op_array)->opcodes[open_brackets_token->u.op.opline_num]; - - /* Change "write context" into "read context" */ - fetch->extended_value = 0; /* reset ZEND_FE_RESET_VARIABLE */ - while (fetch != end) { - --fetch; - if (fetch->opcode == ZEND_FETCH_DIM_W && fetch->op2_type == IS_UNUSED) { - zend_error(E_COMPILE_ERROR, "Cannot use [] for reading"); - } - if (fetch->opcode == ZEND_SEPARATE) { - MAKE_NOP(fetch); - } else { - fetch->opcode -= 3; /* FETCH_W -> FETCH_R */ - } - } + if (key_ast) { + zend_compile_expr(&key_node, key_ast TSRMLS_CC); + key_node_ptr = &key_node; } - GET_NODE(&value_node, opline->result); - - if (value->EA & ZEND_PARSED_LIST_EXPR) { - if (!CG(list_llist).head) { - zend_error(E_COMPILE_ERROR, "Cannot use empty list"); - } - zend_do_list_end(&dummy, &value_node TSRMLS_CC); - zend_do_free(&dummy TSRMLS_CC); - } else { - if (assign_by_ref) { - zend_do_end_variable_parse(value, BP_VAR_W, 0 TSRMLS_CC); - /* Mark FE_FETCH as IS_VAR as it holds the data directly as a value */ - zend_do_assign_ref(NULL, value, &value_node TSRMLS_CC); + if (value_ast) { + if (returns_by_ref && zend_is_variable(value_ast) && !zend_is_call(value_ast)) { + zend_compile_var(&value_node, value_ast, BP_VAR_REF TSRMLS_CC); } else { - zend_do_assign(&dummy, value, &value_node TSRMLS_CC); - zend_do_free(&dummy TSRMLS_CC); + zend_compile_expr(&value_node, value_ast TSRMLS_CC); } + value_node_ptr = &value_node; } - if (key->op_type != IS_UNUSED) { - znode key_node; - - opline = &CG(active_op_array)->opcodes[as_token->u.op.opline_num+1]; - opline->result_type = IS_TMP_VAR; - opline->result.opline_num = get_temporary_variable(CG(active_op_array)); - GET_NODE(&key_node, opline->result); + opline = zend_emit_op(result, ZEND_YIELD, value_node_ptr, key_node_ptr TSRMLS_CC); - zend_do_assign(&dummy, key, &key_node TSRMLS_CC); - zend_do_free(&dummy TSRMLS_CC); + if (value_ast && returns_by_ref && zend_is_call(value_ast)) { + opline->extended_value = ZEND_RETURNS_FUNCTION; } - - do_begin_loop(TSRMLS_C); - INC_BPC(CG(active_op_array)); } /* }}} */ -void zend_do_foreach_end(const znode *foreach_token, const znode *as_token TSRMLS_DC) /* {{{ */ +void zend_compile_instanceof(znode *result, zend_ast *ast TSRMLS_DC) /* {{{ */ { - zend_op *container_ptr; - zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); + zend_ast *obj_ast = ast->child[0]; + zend_ast *class_ast = ast->child[1]; - opline->opcode = ZEND_JMP; - opline->op1.opline_num = as_token->u.op.opline_num; - SET_UNUSED(opline->op1); - SET_UNUSED(opline->op2); - - CG(active_op_array)->opcodes[foreach_token->u.op.opline_num].op2.opline_num = get_next_op_number(CG(active_op_array)); /* FE_RESET */ - CG(active_op_array)->opcodes[as_token->u.op.opline_num].op2.opline_num = get_next_op_number(CG(active_op_array)); /* FE_FETCH */ + znode obj_node, class_node; + zend_op *opline; - do_end_loop(as_token->u.op.opline_num, 1 TSRMLS_CC); + zend_compile_expr(&obj_node, obj_ast TSRMLS_CC); + if (obj_node.op_type == IS_CONST) { + zend_error_noreturn(E_COMPILE_ERROR, + "instanceof expects an object instance, constant given"); + } - zend_stack_top(&CG(foreach_copy_stack), (void **) &container_ptr); - generate_free_foreach_copy(container_ptr TSRMLS_CC); - zend_stack_del_top(&CG(foreach_copy_stack)); + opline = zend_compile_class_ref(&class_node, class_ast TSRMLS_CC); + opline->extended_value |= ZEND_FETCH_CLASS_NO_AUTOLOAD; - DEC_BPC(CG(active_op_array)); + zend_emit_op_tmp(result, ZEND_INSTANCEOF, &obj_node, &class_node TSRMLS_CC); } /* }}} */ -void zend_do_declare_begin(TSRMLS_D) /* {{{ */ +void zend_compile_include_or_eval(znode *result, zend_ast *ast TSRMLS_DC) /* {{{ */ { - zend_stack_push(&CG(declare_stack), &CG(declarables), sizeof(zend_declarables)); + zend_ast *expr_ast = ast->child[0]; + znode expr_node; + zend_op *opline; + + zend_do_extended_fcall_begin(TSRMLS_C); + zend_compile_expr(&expr_node, expr_ast TSRMLS_CC); + + opline = zend_emit_op(result, ZEND_INCLUDE_OR_EVAL, &expr_node, NULL TSRMLS_CC); + opline->extended_value = ast->attr; + + zend_do_extended_fcall_end(TSRMLS_C); } /* }}} */ -void zend_do_declare_stmt(znode *var, znode *val TSRMLS_DC) /* {{{ */ +void zend_compile_isset_or_empty(znode *result, zend_ast *ast TSRMLS_DC) /* {{{ */ { - if (!zend_binary_strcasecmp(Z_STRVAL(var->u.constant), Z_STRLEN(var->u.constant), "ticks", sizeof("ticks")-1)) { - convert_to_long(&val->u.constant); - CG(declarables).ticks = val->u.constant; - } else if (!zend_binary_strcasecmp(Z_STRVAL(var->u.constant), Z_STRLEN(var->u.constant), "encoding", sizeof("encoding")-1)) { - if ((Z_TYPE(val->u.constant) & IS_CONSTANT_TYPE_MASK) == IS_CONSTANT) { - zend_error(E_COMPILE_ERROR, "Cannot use constants as encoding"); - } - - /* - * Check that the pragma comes before any opcodes. If the compilation - * got as far as this, the previous portion of the script must have been - * parseable according to the .ini script_encoding setting. We still - * want to tell them to put declare() at the top. - */ - { - int num = CG(active_op_array)->last; - /* ignore ZEND_EXT_STMT and ZEND_TICKS */ - while (num > 0 && - (CG(active_op_array)->opcodes[num-1].opcode == ZEND_EXT_STMT || - CG(active_op_array)->opcodes[num-1].opcode == ZEND_TICKS)) { - --num; - } + zend_ast *var_ast = ast->child[0]; - if (num > 0) { - zend_error(E_COMPILE_ERROR, "Encoding declaration pragma must be the very first statement in the script"); - } - } - - if (CG(multibyte)) { - const zend_encoding *new_encoding, *old_encoding; - zend_encoding_filter old_input_filter; + znode var_node; + zend_op *opline; - CG(encoding_declared) = 1; + ZEND_ASSERT(ast->kind == ZEND_AST_ISSET || ast->kind == ZEND_AST_EMPTY); - convert_to_string(&val->u.constant); - new_encoding = zend_multibyte_fetch_encoding(Z_STRVAL(val->u.constant) TSRMLS_CC); - if (!new_encoding) { - zend_error(E_COMPILE_WARNING, "Unsupported encoding [%s]", Z_STRVAL(val->u.constant)); - } else { - old_input_filter = LANG_SCNG(input_filter); - old_encoding = LANG_SCNG(script_encoding); - zend_multibyte_set_filter(new_encoding TSRMLS_CC); - - /* need to re-scan if input filter changed */ - if (old_input_filter != LANG_SCNG(input_filter) || - (old_input_filter && new_encoding != old_encoding)) { - zend_multibyte_yyinput_again(old_input_filter, old_encoding TSRMLS_CC); - } - } + if (!zend_is_variable(var_ast) || zend_is_call(var_ast)) { + if (ast->kind == ZEND_AST_EMPTY) { + /* empty(expr) can be transformed to !expr */ + zend_ast *not_ast = zend_ast_create_ex(ZEND_AST_UNARY_OP, ZEND_BOOL_NOT, var_ast); + zend_compile_expr(result, not_ast TSRMLS_CC); + return; } else { - zend_error(E_COMPILE_WARNING, "declare(encoding=...) ignored because Zend multibyte feature is turned off by settings"); + zend_error_noreturn(E_COMPILE_ERROR, + "Cannot use isset() on the result of an expression " + "(you can use \"null !== expression\" instead)"); } - zval_dtor(&val->u.constant); - } else { - zend_error(E_COMPILE_WARNING, "Unsupported declare '%s'", Z_STRVAL(var->u.constant)); - zval_dtor(&val->u.constant); } - zval_dtor(&var->u.constant); -} -/* }}} */ -void zend_do_declare_end(const znode *declare_token TSRMLS_DC) /* {{{ */ -{ - zend_declarables *declarables; - - zend_stack_top(&CG(declare_stack), (void **) &declarables); - /* We should restore if there was more than (current - start) - (ticks?1:0) opcodes */ - if ((get_next_op_number(CG(active_op_array)) - declare_token->u.op.opline_num) - ((Z_LVAL(CG(declarables).ticks))?1:0)) { - CG(declarables) = *declarables; + switch (var_ast->kind) { + case ZEND_AST_VAR: + if (zend_try_compile_cv(&var_node, var_ast TSRMLS_CC) == SUCCESS) { + opline = zend_emit_op(result, ZEND_ISSET_ISEMPTY_VAR, &var_node, NULL TSRMLS_CC); + opline->extended_value = ZEND_FETCH_LOCAL | ZEND_QUICK_SET; + } else { + opline = zend_compile_simple_var_no_cv(result, var_ast, BP_VAR_IS TSRMLS_CC); + opline->opcode = ZEND_ISSET_ISEMPTY_VAR; + } + break; + case ZEND_AST_DIM: + opline = zend_compile_dim_common(result, var_ast, BP_VAR_IS TSRMLS_CC); + opline->opcode = ZEND_ISSET_ISEMPTY_DIM_OBJ; + break; + case ZEND_AST_PROP: + opline = zend_compile_prop_common(result, var_ast, BP_VAR_IS TSRMLS_CC); + opline->opcode = ZEND_ISSET_ISEMPTY_PROP_OBJ; + break; + case ZEND_AST_STATIC_PROP: + opline = zend_compile_static_prop_common(result, var_ast, BP_VAR_IS TSRMLS_CC); + opline->opcode = ZEND_ISSET_ISEMPTY_VAR; + break; + EMPTY_SWITCH_DEFAULT_CASE() } + + result->op_type = opline->result_type = IS_TMP_VAR; + opline->extended_value |= ast->kind == ZEND_AST_ISSET ? ZEND_ISSET : ZEND_ISEMPTY; } /* }}} */ -void zend_do_exit(znode *result, const znode *message TSRMLS_DC) /* {{{ */ +void zend_compile_silence(znode *result, zend_ast *ast TSRMLS_DC) /* {{{ */ { - zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); + zend_ast *expr_ast = ast->child[0]; + znode silence_node; + uint32_t opline_num; + zend_op *begin_silence, *end_silence; - opline->opcode = ZEND_EXIT; - SET_NODE(opline->op1, message); - SET_UNUSED(opline->op2); + opline_num = get_next_op_number(CG(active_op_array)); + begin_silence = zend_emit_op_tmp(&silence_node, ZEND_BEGIN_SILENCE, NULL, NULL TSRMLS_CC); + /* pair BEGIN_SILENCE and END_SILENCE opcodes */ + begin_silence->op2.num = opline_num; - result->op_type = IS_CONST; - Z_TYPE(result->u.constant) = IS_BOOL; - Z_LVAL(result->u.constant) = 1; + if (expr_ast->kind == ZEND_AST_VAR) { + /* For @$var we need to force a FETCH instruction, otherwise the CV access will + * happen outside the silenced section. */ + zend_compile_simple_var_no_cv(result, expr_ast, BP_VAR_R TSRMLS_CC); + } else { + zend_compile_expr(result, expr_ast TSRMLS_CC); + } + + end_silence = zend_emit_op(NULL, ZEND_END_SILENCE, &silence_node, NULL TSRMLS_CC); + /* pair BEGIN_SILENCE and END_SILENCE opcodes */ + end_silence->op2.num = opline_num; } /* }}} */ -void zend_do_begin_silence(znode *strudel_token TSRMLS_DC) /* {{{ */ +void zend_compile_shell_exec(znode *result, zend_ast *ast TSRMLS_DC) /* {{{ */ { - zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); + zend_ast *expr_ast = ast->child[0]; - opline->opcode = ZEND_BEGIN_SILENCE; - opline->result_type = IS_TMP_VAR; - opline->result.var = get_temporary_variable(CG(active_op_array)); - SET_UNUSED(opline->op1); - SET_UNUSED(opline->op2); - GET_NODE(strudel_token, opline->result); -} -/* }}} */ + zval fn_name; + zend_ast *name_ast, *args_ast, *call_ast; -void zend_do_end_silence(const znode *strudel_token TSRMLS_DC) /* {{{ */ -{ - zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); + ZVAL_STRING(&fn_name, "shell_exec"); + name_ast = zend_ast_create_zval(&fn_name); + args_ast = zend_ast_create_list(1, ZEND_AST_ARG_LIST, expr_ast); + call_ast = zend_ast_create(ZEND_AST_CALL, name_ast, args_ast); - opline->opcode = ZEND_END_SILENCE; - SET_NODE(opline->op1, strudel_token); - SET_UNUSED(opline->op2); + zend_compile_expr(result, call_ast TSRMLS_CC); + + zval_ptr_dtor(&fn_name); } /* }}} */ -void zend_do_jmp_set(const znode *value, znode *jmp_token, znode *colon_token TSRMLS_DC) /* {{{ */ +void zend_compile_array(znode *result, zend_ast *ast TSRMLS_DC) /* {{{ */ { - int op_number = get_next_op_number(CG(active_op_array)); - zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); + zend_ast_list *list = zend_ast_get_list(ast); + zend_op *opline; + uint32_t i, opnum_init = -1; + zend_bool packed = 1; - if (value->op_type == IS_VAR || value->op_type == IS_CV) { - opline->opcode = ZEND_JMP_SET_VAR; - opline->result_type = IS_VAR; - } else { - opline->opcode = ZEND_JMP_SET; - opline->result_type = IS_TMP_VAR; + if (zend_try_ct_eval_array(&result->u.constant, ast TSRMLS_CC)) { + result->op_type = IS_CONST; + return; } - opline->result.var = get_temporary_variable(CG(active_op_array)); - SET_NODE(opline->op1, value); - SET_UNUSED(opline->op2); - GET_NODE(colon_token, opline->result); + for (i = 0; i < list->children; ++i) { + zend_ast *elem_ast = list->child[i]; + zend_ast *value_ast = elem_ast->child[0]; + zend_ast *key_ast = elem_ast->child[1]; + zend_bool by_ref = elem_ast->attr; - jmp_token->u.op.opline_num = op_number; + znode value_node, key_node, *key_node_ptr = NULL; - INC_BPC(CG(active_op_array)); -} -/* }}} */ + if (key_ast) { + zend_compile_expr(&key_node, key_ast TSRMLS_CC); + zend_handle_numeric_op(&key_node TSRMLS_CC); + key_node_ptr = &key_node; + } -void zend_do_jmp_set_else(znode *result, const znode *false_value, const znode *jmp_token, const znode *colon_token TSRMLS_DC) /* {{{ */ -{ - zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); + if (by_ref) { + zend_ensure_writable_variable(value_ast); + zend_compile_var(&value_node, value_ast, BP_VAR_W TSRMLS_CC); + } else { + zend_compile_expr(&value_node, value_ast TSRMLS_CC); + } - SET_NODE(opline->result, colon_token); - if (colon_token->op_type == IS_TMP_VAR) { - if (false_value->op_type == IS_VAR || false_value->op_type == IS_CV) { - CG(active_op_array)->opcodes[jmp_token->u.op.opline_num].opcode = ZEND_JMP_SET_VAR; - CG(active_op_array)->opcodes[jmp_token->u.op.opline_num].result_type = IS_VAR; - opline->opcode = ZEND_QM_ASSIGN_VAR; - opline->result_type = IS_VAR; + if (i == 0) { + opnum_init = get_next_op_number(CG(active_op_array)); + opline = zend_emit_op_tmp(result, ZEND_INIT_ARRAY, &value_node, key_node_ptr TSRMLS_CC); + opline->extended_value = list->children << ZEND_ARRAY_SIZE_SHIFT; } else { - opline->opcode = ZEND_QM_ASSIGN; + opline = zend_emit_op(NULL, ZEND_ADD_ARRAY_ELEMENT, + &value_node, key_node_ptr TSRMLS_CC); + SET_NODE(opline->result, result); } - } else { - opline->opcode = ZEND_QM_ASSIGN_VAR; - } - opline->extended_value = 0; - SET_NODE(opline->op1, false_value); - SET_UNUSED(opline->op2); + opline->extended_value |= by_ref; - GET_NODE(result, opline->result); + if (key_ast && key_node.op_type == IS_CONST && Z_TYPE(key_node.u.constant) == IS_STRING) { + packed = 0; + } + } - CG(active_op_array)->opcodes[jmp_token->u.op.opline_num].op2.opline_num = get_next_op_number(CG(active_op_array)); + /* Handle empty array */ + if (!list->children) { + zend_emit_op_tmp(result, ZEND_INIT_ARRAY, NULL, NULL TSRMLS_CC); + } - DEC_BPC(CG(active_op_array)); + /* Add a flag to INIT_ARRAY if we know this array cannot be packed */ + if (!packed) { + ZEND_ASSERT(opnum_init != -1); + opline = &CG(active_op_array)->opcodes[opnum_init]; + opline->extended_value |= ZEND_ARRAY_NOT_PACKED; + } } /* }}} */ -void zend_do_begin_qm_op(const znode *cond, znode *qm_token TSRMLS_DC) /* {{{ */ +void zend_compile_const(znode *result, zend_ast *ast TSRMLS_DC) /* {{{ */ { - int jmpz_op_number = get_next_op_number(CG(active_op_array)); + zend_ast *name_ast = ast->child[0]; + zend_op *opline; - opline = get_next_op(CG(active_op_array) TSRMLS_CC); + zend_bool is_fully_qualified; + zend_string *orig_name = zend_ast_get_str(name_ast); + zend_string *resolved_name = zend_resolve_const_name( + orig_name, name_ast->attr, &is_fully_qualified TSRMLS_CC); - opline->opcode = ZEND_JMPZ; - SET_NODE(opline->op1, cond); - SET_UNUSED(opline->op2); - opline->op2.opline_num = jmpz_op_number; - GET_NODE(qm_token, opline->op2); + if (zend_try_ct_eval_const(&result->u.constant, resolved_name, is_fully_qualified TSRMLS_CC)) { + result->op_type = IS_CONST; + zend_string_release(resolved_name); + return; + } - INC_BPC(CG(active_op_array)); + opline = zend_emit_op_tmp(result, ZEND_FETCH_CONSTANT, NULL, NULL TSRMLS_CC); + opline->op2_type = IS_CONST; + + if (is_fully_qualified) { + opline->op2.constant = zend_add_const_name_literal( + CG(active_op_array), resolved_name, 0 TSRMLS_CC); + } else { + opline->extended_value = IS_CONSTANT_UNQUALIFIED; + if (CG(current_namespace)) { + opline->extended_value |= IS_CONSTANT_IN_NAMESPACE; + opline->op2.constant = zend_add_const_name_literal( + CG(active_op_array), resolved_name, 1 TSRMLS_CC); + } else { + opline->op2.constant = zend_add_const_name_literal( + CG(active_op_array), resolved_name, 0 TSRMLS_CC); + } + } + zend_alloc_cache_slot(opline->op2.constant TSRMLS_CC); } /* }}} */ -void zend_do_qm_true(const znode *true_value, znode *qm_token, znode *colon_token TSRMLS_DC) /* {{{ */ +void zend_compile_class_const(znode *result, zend_ast *ast TSRMLS_DC) /* {{{ */ { - zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); + zend_ast *class_ast = ast->child[0]; + zend_ast *const_ast = ast->child[1]; - CG(active_op_array)->opcodes[qm_token->u.op.opline_num].op2.opline_num = get_next_op_number(CG(active_op_array))+1; /* jmp over the ZEND_JMP */ + znode class_node, const_node; + zend_op *opline; - if (true_value->op_type == IS_VAR || true_value->op_type == IS_CV) { - opline->opcode = ZEND_QM_ASSIGN_VAR; - opline->result_type = IS_VAR; + if (zend_is_const_default_class_ref(class_ast)) { + class_node.op_type = IS_CONST; + ZVAL_STR(&class_node.u.constant, zend_resolve_class_name_ast(class_ast TSRMLS_CC)); } else { - opline->opcode = ZEND_QM_ASSIGN; - opline->result_type = IS_TMP_VAR; + zend_compile_class_ref(&class_node, class_ast TSRMLS_CC); } - opline->result.var = get_temporary_variable(CG(active_op_array)); - SET_NODE(opline->op1, true_value); - SET_UNUSED(opline->op2); - GET_NODE(qm_token, opline->result); - colon_token->u.op.opline_num = get_next_op_number(CG(active_op_array)); + zend_compile_expr(&const_node, const_ast TSRMLS_CC); - opline = get_next_op(CG(active_op_array) TSRMLS_CC); - opline->opcode = ZEND_JMP; - SET_UNUSED(opline->op1); - SET_UNUSED(opline->op2); + opline = zend_emit_op_tmp(result, ZEND_FETCH_CONSTANT, NULL, &const_node TSRMLS_CC); + + zend_set_class_name_op1(opline, &class_node TSRMLS_CC); + + if (opline->op1_type == IS_CONST) { + zend_alloc_cache_slot(opline->op2.constant TSRMLS_CC); + } else { + zend_alloc_polymorphic_cache_slot(opline->op2.constant TSRMLS_CC); + } } /* }}} */ -void zend_do_qm_false(znode *result, const znode *false_value, const znode *qm_token, const znode *colon_token TSRMLS_DC) /* {{{ */ +void zend_compile_resolve_class_name(znode *result, zend_ast *ast TSRMLS_DC) /* {{{ */ { - zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); + zend_ast *name_ast = ast->child[0]; + uint32_t fetch_type = zend_get_class_fetch_type(zend_ast_get_str(name_ast)); - SET_NODE(opline->result, qm_token); - if (qm_token->op_type == IS_TMP_VAR) { - if (false_value->op_type == IS_VAR || false_value->op_type == IS_CV) { - CG(active_op_array)->opcodes[colon_token->u.op.opline_num - 1].opcode = ZEND_QM_ASSIGN_VAR; - CG(active_op_array)->opcodes[colon_token->u.op.opline_num - 1].result_type = IS_VAR; - opline->opcode = ZEND_QM_ASSIGN_VAR; - opline->result_type = IS_VAR; - } else { - opline->opcode = ZEND_QM_ASSIGN; - } - } else { - opline->opcode = ZEND_QM_ASSIGN_VAR; - } - SET_NODE(opline->op1, false_value); - SET_UNUSED(opline->op2); + switch (fetch_type) { + case ZEND_FETCH_CLASS_SELF: + if (!CG(active_class_entry)) { + zend_error_noreturn(E_COMPILE_ERROR, + "Cannot access self::class when no class scope is active"); + } + result->op_type = IS_CONST; + ZVAL_STR_COPY(&result->u.constant, CG(active_class_entry)->name); + break; + case ZEND_FETCH_CLASS_STATIC: + case ZEND_FETCH_CLASS_PARENT: + if (!CG(active_class_entry)) { + zend_error_noreturn(E_COMPILE_ERROR, + "Cannot access %s::class when no class scope is active", + fetch_type == ZEND_FETCH_CLASS_STATIC ? "static" : "parent"); + } else { + zval class_str_zv; + zend_ast *class_str_ast, *class_const_ast; - CG(active_op_array)->opcodes[colon_token->u.op.opline_num].op1.opline_num = get_next_op_number(CG(active_op_array)); + ZVAL_STRING(&class_str_zv, "class"); + class_str_ast = zend_ast_create_zval(&class_str_zv); + class_const_ast = zend_ast_create( + ZEND_AST_CLASS_CONST, name_ast, class_str_ast); - GET_NODE(result, opline->result); + zend_compile_expr(result, class_const_ast TSRMLS_CC); - DEC_BPC(CG(active_op_array)); + zval_ptr_dtor(&class_str_zv); + } + break; + case ZEND_FETCH_CLASS_DEFAULT: + result->op_type = IS_CONST; + ZVAL_STR(&result->u.constant, zend_resolve_class_name_ast(name_ast TSRMLS_CC)); + break; + EMPTY_SWITCH_DEFAULT_CASE() + } } /* }}} */ -void zend_do_extended_info(TSRMLS_D) /* {{{ */ +void zend_compile_encaps_list(znode *result, zend_ast *ast TSRMLS_DC) /* {{{ */ { - zend_op *opline; + zend_ast_list *list = zend_ast_get_list(ast); + uint32_t i; - if (!(CG(compiler_options) & ZEND_COMPILE_EXTENDED_INFO)) { - return; - } + ZEND_ASSERT(list->children > 0); - opline = get_next_op(CG(active_op_array) TSRMLS_CC); + result->op_type = IS_TMP_VAR; + result->u.op.var = get_temporary_variable(CG(active_op_array)); - opline->opcode = ZEND_EXT_STMT; - SET_UNUSED(opline->op1); - SET_UNUSED(opline->op2); -} -/* }}} */ + for (i = 0; i < list->children; ++i) { + zend_ast *elem_ast = list->child[i]; + znode elem_node; + zend_op *opline; -void zend_do_extended_fcall_begin(TSRMLS_D) /* {{{ */ -{ - zend_op *opline; + zend_compile_expr(&elem_node, elem_ast TSRMLS_CC); - if (!(CG(compiler_options) & ZEND_COMPILE_EXTENDED_INFO)) { - return; - } + if (elem_ast->kind == ZEND_AST_ZVAL) { + zval *zv = &elem_node.u.constant; + ZEND_ASSERT(Z_TYPE_P(zv) == IS_STRING); - opline = get_next_op(CG(active_op_array) TSRMLS_CC); + if (Z_STRLEN_P(zv) > 1) { + opline = get_next_op(CG(active_op_array) TSRMLS_CC); + opline->opcode = ZEND_ADD_STRING; + } else if (Z_STRLEN_P(zv) == 1) { + char ch = *Z_STRVAL_P(zv); + zend_string_release(Z_STR_P(zv)); + ZVAL_LONG(zv, ch); - opline->opcode = ZEND_EXT_FCALL_BEGIN; - SET_UNUSED(opline->op1); - SET_UNUSED(opline->op2); + opline = get_next_op(CG(active_op_array) TSRMLS_CC); + opline->opcode = ZEND_ADD_CHAR; + } else { + /* String can be empty after a variable at the end of a heredoc */ + zend_string_release(Z_STR_P(zv)); + continue; + } + } else { + opline = get_next_op(CG(active_op_array) TSRMLS_CC); + opline->opcode = ZEND_ADD_VAR; + ZEND_ASSERT(elem_node.op_type != IS_CONST); + } + + if (i == 0) { + SET_UNUSED(opline->op1); + } else { + SET_NODE(opline->op1, result); + } + SET_NODE(opline->op2, &elem_node); + SET_NODE(opline->result, result); + } } /* }}} */ -void zend_do_extended_fcall_end(TSRMLS_D) /* {{{ */ +void zend_compile_magic_const(znode *result, zend_ast *ast TSRMLS_DC) /* {{{ */ { - zend_op *opline; + zend_class_entry *ce = CG(active_class_entry); - if (!(CG(compiler_options) & ZEND_COMPILE_EXTENDED_INFO)) { + if (zend_try_ct_eval_magic_const(&result->u.constant, ast TSRMLS_CC)) { + result->op_type = IS_CONST; return; } - opline = get_next_op(CG(active_op_array) TSRMLS_CC); + ZEND_ASSERT(ast->attr == T_CLASS_C && ce && ZEND_CE_IS_TRAIT(ce)); - opline->opcode = ZEND_EXT_FCALL_END; - SET_UNUSED(opline->op1); - SET_UNUSED(opline->op2); + { + zend_ast *const_ast = zend_ast_create(ZEND_AST_CONST, + zend_ast_create_zval_from_str(zend_string_init("__CLASS__", sizeof("__CLASS__") - 1, 0))); + zend_compile_const(result, const_ast TSRMLS_CC); + zend_ast_destroy(const_ast); + } } /* }}} */ -void zend_do_ticks(TSRMLS_D) /* {{{ */ +zend_bool zend_is_allowed_in_const_expr(zend_ast_kind kind) /* {{{ */ { - zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC); - - opline->opcode = ZEND_TICKS; - SET_UNUSED(opline->op1); - SET_UNUSED(opline->op2); - opline->extended_value = Z_LVAL(CG(declarables).ticks); + return kind == ZEND_AST_ZVAL || kind == ZEND_AST_BINARY_OP + || kind == ZEND_AST_GREATER || kind == ZEND_AST_GREATER_EQUAL + || kind == ZEND_AST_AND || kind == ZEND_AST_OR + || kind == ZEND_AST_UNARY_OP + || kind == ZEND_AST_UNARY_PLUS || kind == ZEND_AST_UNARY_MINUS + || kind == ZEND_AST_CONDITIONAL || kind == ZEND_AST_DIM + || kind == ZEND_AST_ARRAY || kind == ZEND_AST_ARRAY_ELEM + || kind == ZEND_AST_CONST || kind == ZEND_AST_CLASS_CONST + || kind == ZEND_AST_RESOLVE_CLASS_NAME || kind == ZEND_AST_MAGIC_CONST; } /* }}} */ -zend_bool zend_is_auto_global_quick(const char *name, uint name_len, ulong hash TSRMLS_DC) /* {{{ */ +void zend_compile_const_expr_class_const(zend_ast **ast_ptr TSRMLS_DC) /* {{{ */ { - zend_auto_global *auto_global; + zend_ast *ast = *ast_ptr; + zend_ast *class_ast = ast->child[0]; + zend_ast *const_ast = ast->child[1]; + zend_string *class_name; + zend_string *const_name = zend_ast_get_str(const_ast); + zval result; + int fetch_type; - if (zend_hash_quick_find(CG(auto_globals), name, name_len+1, hash, (void **) &auto_global)==SUCCESS) { - if (auto_global->armed) { - auto_global->armed = auto_global->auto_global_callback(auto_global->name, auto_global->name_len TSRMLS_CC); - } - return 1; + if (class_ast->kind != ZEND_AST_ZVAL) { + zend_error_noreturn(E_COMPILE_ERROR, + "Dynamic class names are not allowed in compile-time class constant references"); } - return 0; -} -/* }}} */ -zend_bool zend_is_auto_global(const char *name, uint name_len TSRMLS_DC) /* {{{ */ -{ - return zend_is_auto_global_quick(name, name_len, zend_hash_func(name, name_len+1) TSRMLS_CC); -} -/* }}} */ + class_name = zend_ast_get_str(class_ast); + fetch_type = zend_get_class_fetch_type(class_name); -int zend_register_auto_global(const char *name, uint name_len, zend_bool jit, zend_auto_global_callback auto_global_callback TSRMLS_DC) /* {{{ */ -{ - zend_auto_global auto_global; + if (ZEND_FETCH_CLASS_STATIC == fetch_type) { + zend_error_noreturn(E_COMPILE_ERROR, + "\"static::\" is not allowed in compile-time constants"); + } + + if (ZEND_FETCH_CLASS_DEFAULT == fetch_type) { + class_name = zend_resolve_class_name_ast(class_ast TSRMLS_CC); + } else { + zend_string_addref(class_name); + } - auto_global.name = zend_new_interned_string((char*)name, name_len + 1, 0 TSRMLS_CC); - auto_global.name_len = name_len; - auto_global.auto_global_callback = auto_global_callback; - auto_global.jit = jit; + Z_STR(result) = zend_concat3( + class_name->val, class_name->len, "::", 2, const_name->val, const_name->len); - return zend_hash_add(CG(auto_globals), name, name_len+1, &auto_global, sizeof(zend_auto_global), NULL); + Z_TYPE_INFO(result) = IS_CONSTANT_EX; + Z_CONST_FLAGS(result) = fetch_type; + + zend_ast_destroy(ast); + zend_string_release(class_name); + + *ast_ptr = zend_ast_create_zval(&result); } /* }}} */ -static int zend_auto_global_init(zend_auto_global *auto_global TSRMLS_DC) /* {{{ */ +void zend_compile_const_expr_const(zend_ast **ast_ptr TSRMLS_DC) /* {{{ */ { - if (auto_global->jit) { - auto_global->armed = 1; - } else if (auto_global->auto_global_callback) { - auto_global->armed = auto_global->auto_global_callback(auto_global->name, auto_global->name_len TSRMLS_CC); - } else { - auto_global->armed = 0; + zend_ast *ast = *ast_ptr; + zend_ast *name_ast = ast->child[0]; + zend_string *orig_name = zend_ast_get_str(name_ast); + zend_bool is_fully_qualified; + + zval result, resolved_name; + ZVAL_STR(&resolved_name, zend_resolve_const_name( + orig_name, name_ast->attr, &is_fully_qualified TSRMLS_CC)); + + if (zend_try_ct_eval_const(&result, Z_STR(resolved_name), is_fully_qualified TSRMLS_CC)) { + zend_string_release(Z_STR(resolved_name)); + zend_ast_destroy(ast); + *ast_ptr = zend_ast_create_zval(&result); + return; } - return 0; -} -/* }}} */ -ZEND_API void zend_activate_auto_globals(TSRMLS_D) /* {{{ */ -{ - zend_hash_apply(CG(auto_globals), (apply_func_t) zend_auto_global_init TSRMLS_CC); + Z_TYPE_INFO(resolved_name) = IS_CONSTANT_EX; + if (!is_fully_qualified) { + Z_CONST_FLAGS(resolved_name) = IS_CONSTANT_UNQUALIFIED; + } + + zend_ast_destroy(ast); + *ast_ptr = zend_ast_create_zval(&resolved_name); } /* }}} */ -int zendlex(znode *zendlval TSRMLS_DC) /* {{{ */ +void zend_compile_const_expr_resolve_class_name(zend_ast **ast_ptr TSRMLS_DC) /* {{{ */ { - int retval; - - if (CG(increment_lineno)) { - CG(zend_lineno)++; - CG(increment_lineno) = 0; - } - -again: - Z_TYPE(zendlval->u.constant) = IS_LONG; - retval = lex_scan(&zendlval->u.constant TSRMLS_CC); - switch (retval) { - case T_COMMENT: - case T_DOC_COMMENT: - case T_OPEN_TAG: - case T_WHITESPACE: - goto again; + zend_ast *ast = *ast_ptr; + zend_ast *name_ast = ast->child[0]; + uint32_t fetch_type = zend_get_class_fetch_type(zend_ast_get_str(name_ast)); + zval result; - case T_CLOSE_TAG: - if (LANG_SCNG(yy_text)[LANG_SCNG(yy_leng)-1] != '>') { - CG(increment_lineno) = 1; - } - if (CG(has_bracketed_namespaces) && !CG(in_namespace)) { - goto again; + switch (fetch_type) { + case ZEND_FETCH_CLASS_SELF: + if (!CG(active_class_entry)) { + zend_error_noreturn(E_COMPILE_ERROR, + "Cannot access self::class when no class scope is active"); } - retval = ';'; /* implicit ; */ + ZVAL_STR_COPY(&result, CG(active_class_entry)->name); break; - case T_OPEN_TAG_WITH_ECHO: - retval = T_ECHO; + case ZEND_FETCH_CLASS_STATIC: + case ZEND_FETCH_CLASS_PARENT: + zend_error_noreturn(E_COMPILE_ERROR, + "%s::class cannot be used for compile-time class name resolution", + fetch_type == ZEND_FETCH_CLASS_STATIC ? "static" : "parent" + ); + break; + case ZEND_FETCH_CLASS_DEFAULT: + ZVAL_STR(&result, zend_resolve_class_name_ast(name_ast TSRMLS_CC)); break; + EMPTY_SWITCH_DEFAULT_CASE() } - INIT_PZVAL(&zendlval->u.constant); - zendlval->op_type = IS_CONST; - return retval; + zend_ast_destroy(ast); + *ast_ptr = zend_ast_create_zval(&result); } /* }}} */ -ZEND_API void zend_initialize_class_data(zend_class_entry *ce, zend_bool nullify_handlers TSRMLS_DC) /* {{{ */ +void zend_compile_const_expr_magic_const(zend_ast **ast_ptr TSRMLS_DC) /* {{{ */ { - zend_bool persistent_hashes = (ce->type == ZEND_INTERNAL_CLASS) ? 1 : 0; - dtor_func_t zval_ptr_dtor_func = ((persistent_hashes) ? ZVAL_INTERNAL_PTR_DTOR : ZVAL_PTR_DTOR); - - ce->refcount = 1; - ce->ce_flags = 0; - - ce->default_properties_table = NULL; - ce->default_static_members_table = NULL; - zend_hash_init_ex(&ce->properties_info, 0, NULL, (dtor_func_t) (persistent_hashes ? zend_destroy_property_info_internal : zend_destroy_property_info), persistent_hashes, 0); - zend_hash_init_ex(&ce->constants_table, 0, NULL, zval_ptr_dtor_func, persistent_hashes, 0); - zend_hash_init_ex(&ce->function_table, 0, NULL, ZEND_FUNCTION_DTOR, persistent_hashes, 0); - - if (ce->type == ZEND_INTERNAL_CLASS) { -#ifdef ZTS - int n = zend_hash_num_elements(CG(class_table)); + zend_ast *ast = *ast_ptr; + zend_class_entry *ce = CG(active_class_entry); - if (CG(static_members_table) && n >= CG(last_static_member)) { - /* Support for run-time declaration: dl() */ - CG(last_static_member) = n+1; - CG(static_members_table) = realloc(CG(static_members_table), (n+1)*sizeof(zval**)); - CG(static_members_table)[n] = NULL; - } - ce->static_members_table = (zval**)(zend_intptr_t)n; -#else - ce->static_members_table = NULL; -#endif - } else { - ce->static_members_table = ce->default_static_members_table; - ce->info.user.doc_comment = NULL; - ce->info.user.doc_comment_len = 0; - } + /* Other cases already resolved by constant folding */ + ZEND_ASSERT(ast->attr == T_CLASS_C && ce && ZEND_CE_IS_TRAIT(ce)); - ce->default_properties_count = 0; - ce->default_static_members_count = 0; + { + zval const_zv; + ZVAL_STRING(&const_zv, "__CLASS__"); + Z_TYPE_INFO(const_zv) = IS_CONSTANT_EX; - if (nullify_handlers) { - ce->constructor = NULL; - ce->destructor = NULL; - ce->clone = NULL; - ce->__get = NULL; - ce->__set = NULL; - ce->__unset = NULL; - ce->__isset = NULL; - ce->__call = NULL; - ce->__callstatic = NULL; - ce->__tostring = NULL; - ce->create_object = NULL; - ce->get_iterator = NULL; - ce->iterator_funcs.funcs = NULL; - ce->interface_gets_implemented = NULL; - ce->get_static_method = NULL; - ce->parent = NULL; - ce->num_interfaces = 0; - ce->interfaces = NULL; - ce->num_traits = 0; - ce->traits = NULL; - ce->trait_aliases = NULL; - ce->trait_precedences = NULL; - ce->serialize = NULL; - ce->unserialize = NULL; - ce->serialize_func = NULL; - ce->unserialize_func = NULL; - if (ce->type == ZEND_INTERNAL_CLASS) { - ce->info.internal.module = NULL; - ce->info.internal.builtin_functions = NULL; - } + zend_ast_destroy(ast); + *ast_ptr = zend_ast_create_zval(&const_zv); } } /* }}} */ -int zend_get_class_fetch_type(const char *class_name, uint class_name_len) /* {{{ */ +void zend_compile_const_expr(zend_ast **ast_ptr TSRMLS_DC) /* {{{ */ { - if ((class_name_len == sizeof("self")-1) && - !strncasecmp(class_name, "self", sizeof("self")-1)) { - return ZEND_FETCH_CLASS_SELF; - } else if ((class_name_len == sizeof("parent")-1) && - !strncasecmp(class_name, "parent", sizeof("parent")-1)) { - return ZEND_FETCH_CLASS_PARENT; - } else if ((class_name_len == sizeof("static")-1) && - !strncasecmp(class_name, "static", sizeof("static")-1)) { - return ZEND_FETCH_CLASS_STATIC; - } else { - return ZEND_FETCH_CLASS_DEFAULT; + zend_ast *ast = *ast_ptr; + if (ast == NULL || ast->kind == ZEND_AST_ZVAL) { + return; } -} -/* }}} */ -ZEND_API const char* zend_get_compiled_variable_name(const zend_op_array *op_array, zend_uint var, int* name_len) /* {{{ */ -{ - if (name_len) { - *name_len = op_array->vars[var].name_len; + if (!zend_is_allowed_in_const_expr(ast->kind)) { + zend_error_noreturn(E_COMPILE_ERROR, "Constant expression contains invalid operations"); + } + + switch (ast->kind) { + case ZEND_AST_CLASS_CONST: + zend_compile_const_expr_class_const(ast_ptr TSRMLS_CC); + break; + case ZEND_AST_CONST: + zend_compile_const_expr_const(ast_ptr TSRMLS_CC); + break; + case ZEND_AST_RESOLVE_CLASS_NAME: + zend_compile_const_expr_resolve_class_name(ast_ptr TSRMLS_CC); + break; + case ZEND_AST_MAGIC_CONST: + zend_compile_const_expr_magic_const(ast_ptr TSRMLS_CC); + break; + default: + zend_ast_apply(ast, zend_compile_const_expr TSRMLS_CC); + break; } - return op_array->vars[var].name; } /* }}} */ -void zend_do_build_namespace_name(znode *result, znode *prefix, znode *name TSRMLS_DC) /* {{{ */ +void zend_const_expr_to_zval(zval *result, zend_ast *ast TSRMLS_DC) /* {{{ */ { - if (prefix) { - *result = *prefix; - if (Z_TYPE(result->u.constant) == IS_STRING && - Z_STRLEN(result->u.constant) == 0) { - /* namespace\ */ - if (CG(current_namespace)) { - znode tmp; + zend_ast *orig_ast = ast; + zend_eval_const_expr(&ast TSRMLS_CC); + zend_compile_const_expr(&ast TSRMLS_CC); + if (ast->kind == ZEND_AST_ZVAL) { + ZVAL_COPY_VALUE(result, zend_ast_get_zval(ast)); - zval_dtor(&result->u.constant); - tmp.op_type = IS_CONST; - tmp.u.constant = *CG(current_namespace); - zval_copy_ctor(&tmp.u.constant); - zend_do_build_namespace_name(result, NULL, &tmp TSRMLS_CC); - } - } + /* Kill this branch of the original AST, as it was already destroyed. + * It would be nice to find a better solution to this problem in the + * future. */ + orig_ast->kind = 0; } else { - result->op_type = IS_CONST; - Z_TYPE(result->u.constant) = IS_STRING; - Z_STRVAL(result->u.constant) = NULL; - Z_STRLEN(result->u.constant) = 0; + ZVAL_NEW_AST(result, zend_ast_copy(ast)); } - /* prefix = result */ - zend_do_build_full_name(NULL, result, name, 0 TSRMLS_CC); } /* }}} */ -void zend_do_begin_namespace(const znode *name, zend_bool with_bracket TSRMLS_DC) /* {{{ */ +/* Same as compile_stmt, but with early binding */ +void zend_compile_top_stmt(zend_ast *ast TSRMLS_DC) /* {{{ */ { - char *lcname; - - /* handle mixed syntax declaration or nested namespaces */ - if (!CG(has_bracketed_namespaces)) { - if (CG(current_namespace)) { - /* previous namespace declarations were unbracketed */ - if (with_bracket) { - zend_error(E_COMPILE_ERROR, "Cannot mix bracketed namespace declarations with unbracketed namespace declarations"); - } - } - } else { - /* previous namespace declarations were bracketed */ - if (!with_bracket) { - zend_error(E_COMPILE_ERROR, "Cannot mix bracketed namespace declarations with unbracketed namespace declarations"); - } else if (CG(current_namespace) || CG(in_namespace)) { - zend_error(E_COMPILE_ERROR, "Namespace declarations cannot be nested"); - } + if (!ast) { + return; } - if (((!with_bracket && !CG(current_namespace)) || (with_bracket && !CG(has_bracketed_namespaces))) && CG(active_op_array)->last > 0) { - /* ignore ZEND_EXT_STMT and ZEND_TICKS */ - int num = CG(active_op_array)->last; - while (num > 0 && - (CG(active_op_array)->opcodes[num-1].opcode == ZEND_EXT_STMT || - CG(active_op_array)->opcodes[num-1].opcode == ZEND_TICKS)) { - --num; - } - if (num > 0) { - zend_error(E_COMPILE_ERROR, "Namespace declaration statement has to be the very first statement in the script"); + if (ast->kind == ZEND_AST_STMT_LIST) { + zend_ast_list *list = zend_ast_get_list(ast); + uint32_t i; + for (i = 0; i < list->children; ++i) { + zend_compile_top_stmt(list->child[i] TSRMLS_CC); } + return; } - CG(in_namespace) = 1; - if (with_bracket) { - CG(has_bracketed_namespaces) = 1; - } - - if (name) { - lcname = zend_str_tolower_dup(Z_STRVAL(name->u.constant), Z_STRLEN(name->u.constant)); - if (((Z_STRLEN(name->u.constant) == sizeof("self")-1) && - !memcmp(lcname, "self", sizeof("self")-1)) || - ((Z_STRLEN(name->u.constant) == sizeof("parent")-1) && - !memcmp(lcname, "parent", sizeof("parent")-1))) { - zend_error(E_COMPILE_ERROR, "Cannot use '%s' as namespace name", Z_STRVAL(name->u.constant)); - } - efree(lcname); + zend_compile_stmt(ast TSRMLS_CC); - if (CG(current_namespace)) { - zval_dtor(CG(current_namespace)); - } else { - ALLOC_ZVAL(CG(current_namespace)); - } - *CG(current_namespace) = name->u.constant; - } else { - if (CG(current_namespace)) { - zval_dtor(CG(current_namespace)); - FREE_ZVAL(CG(current_namespace)); - CG(current_namespace) = NULL; - } + if (ast->kind != ZEND_AST_NAMESPACE && ast->kind != ZEND_AST_HALT_COMPILER) { + zend_verify_namespace(TSRMLS_C); } - - if (CG(current_import)) { - zend_hash_destroy(CG(current_import)); - efree(CG(current_import)); - CG(current_import) = NULL; - } - - if (CG(doc_comment)) { - efree(CG(doc_comment)); - CG(doc_comment) = NULL; - CG(doc_comment_len) = 0; + if (ast->kind == ZEND_AST_FUNC_DECL || ast->kind == ZEND_AST_CLASS) { + CG(zend_lineno) = ((zend_ast_decl *) ast)->end_lineno; + zend_do_early_binding(TSRMLS_C); } } /* }}} */ -void zend_do_use(znode *ns_name, znode *new_name, int is_global TSRMLS_DC) /* {{{ */ +void zend_compile_stmt(zend_ast *ast TSRMLS_DC) /* {{{ */ { - char *lcname; - zval *name, *ns, tmp; - zend_bool warn = 0; - zend_class_entry **pce; - - if (!CG(current_import)) { - CG(current_import) = emalloc(sizeof(HashTable)); - zend_hash_init(CG(current_import), 0, NULL, ZVAL_PTR_DTOR, 0); - } - - ALLOC_ZVAL(ns); - *ns = ns_name->u.constant; - if (new_name) { - name = &new_name->u.constant; - } else { - const char *p; - - /* The form "use A\B" is eqivalent to "use A\B as B". - So we extract the last part of compound name to use as a new_name */ - name = &tmp; - p = zend_memrchr(Z_STRVAL_P(ns), '\\', Z_STRLEN_P(ns)); - if (p) { - ZVAL_STRING(name, p+1, 1); - } else { - *name = *ns; - zval_copy_ctor(name); - warn = !is_global && !CG(current_namespace); - } + if (!ast) { + return; } - lcname = zend_str_tolower_dup(Z_STRVAL_P(name), Z_STRLEN_P(name)); + CG(zend_lineno) = ast->lineno; - if (((Z_STRLEN_P(name) == sizeof("self")-1) && - !memcmp(lcname, "self", sizeof("self")-1)) || - ((Z_STRLEN_P(name) == sizeof("parent")-1) && - !memcmp(lcname, "parent", sizeof("parent")-1))) { - zend_error(E_COMPILE_ERROR, "Cannot use %s as %s because '%s' is a special class name", Z_STRVAL_P(ns), Z_STRVAL_P(name), Z_STRVAL_P(name)); - } - - if (CG(current_namespace)) { - /* Prefix import name with current namespace name to avoid conflicts with classes */ - char *c_ns_name = emalloc(Z_STRLEN_P(CG(current_namespace)) + 1 + Z_STRLEN_P(name) + 1); - - zend_str_tolower_copy(c_ns_name, Z_STRVAL_P(CG(current_namespace)), Z_STRLEN_P(CG(current_namespace))); - c_ns_name[Z_STRLEN_P(CG(current_namespace))] = '\\'; - memcpy(c_ns_name+Z_STRLEN_P(CG(current_namespace))+1, lcname, Z_STRLEN_P(name)+1); - if (zend_hash_exists(CG(class_table), c_ns_name, Z_STRLEN_P(CG(current_namespace)) + 1 + Z_STRLEN_P(name)+1)) { - char *tmp2 = zend_str_tolower_dup(Z_STRVAL_P(ns), Z_STRLEN_P(ns)); - - if (Z_STRLEN_P(ns) != Z_STRLEN_P(CG(current_namespace)) + 1 + Z_STRLEN_P(name) || - memcmp(tmp2, c_ns_name, Z_STRLEN_P(ns))) { - zend_error(E_COMPILE_ERROR, "Cannot use %s as %s because the name is already in use", Z_STRVAL_P(ns), Z_STRVAL_P(name)); - } - efree(tmp2); - } - efree(c_ns_name); - } else if (zend_hash_find(CG(class_table), lcname, Z_STRLEN_P(name)+1, (void**)&pce) == SUCCESS && - (*pce)->type == ZEND_USER_CLASS && - (*pce)->info.user.filename == CG(compiled_filename)) { - char *c_tmp = zend_str_tolower_dup(Z_STRVAL_P(ns), Z_STRLEN_P(ns)); - - if (Z_STRLEN_P(ns) != Z_STRLEN_P(name) || - memcmp(c_tmp, lcname, Z_STRLEN_P(ns))) { - zend_error(E_COMPILE_ERROR, "Cannot use %s as %s because the name is already in use", Z_STRVAL_P(ns), Z_STRVAL_P(name)); + switch (ast->kind) { + case ZEND_AST_STMT_LIST: + zend_compile_stmt_list(ast TSRMLS_CC); + break; + case ZEND_AST_GLOBAL: + zend_compile_global_var(ast TSRMLS_CC); + break; + case ZEND_AST_STATIC: + zend_compile_static_var(ast TSRMLS_CC); + break; + case ZEND_AST_UNSET: + zend_compile_unset(ast TSRMLS_CC); + break; + case ZEND_AST_RETURN: + zend_compile_return(ast TSRMLS_CC); + break; + case ZEND_AST_ECHO: + zend_compile_echo(ast TSRMLS_CC); + break; + case ZEND_AST_THROW: + zend_compile_throw(ast TSRMLS_CC); + break; + case ZEND_AST_BREAK: + case ZEND_AST_CONTINUE: + zend_compile_break_continue(ast TSRMLS_CC); + break; + case ZEND_AST_GOTO: + zend_compile_goto(ast TSRMLS_CC); + break; + case ZEND_AST_LABEL: + zend_compile_label(ast TSRMLS_CC); + break; + case ZEND_AST_WHILE: + zend_compile_while(ast TSRMLS_CC); + break; + case ZEND_AST_DO_WHILE: + zend_compile_do_while(ast TSRMLS_CC); + break; + case ZEND_AST_FOR: + zend_compile_for(ast TSRMLS_CC); + break; + case ZEND_AST_FOREACH: + zend_compile_foreach(ast TSRMLS_CC); + break; + case ZEND_AST_IF: + zend_compile_if(ast TSRMLS_CC); + break; + case ZEND_AST_SWITCH: + zend_compile_switch(ast TSRMLS_CC); + break; + case ZEND_AST_TRY: + zend_compile_try(ast TSRMLS_CC); + break; + case ZEND_AST_DECLARE: + zend_compile_declare(ast TSRMLS_CC); + break; + case ZEND_AST_FUNC_DECL: + case ZEND_AST_METHOD: + zend_compile_func_decl(NULL, ast TSRMLS_CC); + break; + case ZEND_AST_PROP_DECL: + zend_compile_prop_decl(ast TSRMLS_CC); + break; + case ZEND_AST_CLASS_CONST_DECL: + zend_compile_class_const_decl(ast TSRMLS_CC); + break; + case ZEND_AST_USE_TRAIT: + zend_compile_use_trait(ast TSRMLS_CC); + break; + case ZEND_AST_CLASS: + zend_compile_class_decl(ast TSRMLS_CC); + break; + case ZEND_AST_USE: + zend_compile_use(ast TSRMLS_CC); + break; + case ZEND_AST_CONST_DECL: + zend_compile_const_decl(ast TSRMLS_CC); + break; + case ZEND_AST_NAMESPACE: + zend_compile_namespace(ast TSRMLS_CC); + break; + case ZEND_AST_HALT_COMPILER: + zend_compile_halt_compiler(ast TSRMLS_CC); + break; + default: + { + znode result; + zend_compile_expr(&result, ast TSRMLS_CC); + zend_do_free(&result TSRMLS_CC); } - efree(c_tmp); } - if (zend_hash_add(CG(current_import), lcname, Z_STRLEN_P(name)+1, &ns, sizeof(zval*), NULL) != SUCCESS) { - zend_error(E_COMPILE_ERROR, "Cannot use %s as %s because the name is already in use", Z_STRVAL_P(ns), Z_STRVAL_P(name)); - } - if (warn) { - if (!strcmp(Z_STRVAL_P(name), "strict")) { - zend_error(E_COMPILE_ERROR, "You seem to be trying to use a different language..."); - } - zend_error(E_WARNING, "The use statement with non-compound name '%s' has no effect", Z_STRVAL_P(name)); + if (Z_LVAL(CG(declarables).ticks) && !zend_is_unticked_stmt(ast)) { + zend_emit_tick(TSRMLS_C); } - efree(lcname); - zval_dtor(name); } /* }}} */ -void zend_do_declare_constant(znode *name, znode *value TSRMLS_DC) /* {{{ */ +void zend_compile_expr(znode *result, zend_ast *ast TSRMLS_DC) /* {{{ */ { - zend_op *opline; - - if(Z_TYPE(value->u.constant) == IS_CONSTANT_ARRAY) { - zend_error(E_COMPILE_ERROR, "Arrays are not allowed as constants"); - } - - if (zend_get_ct_const(&name->u.constant, 0 TSRMLS_CC)) { - zend_error(E_COMPILE_ERROR, "Cannot redeclare constant '%s'", Z_STRVAL(name->u.constant)); - } - - if (CG(current_namespace)) { - /* Prefix constant name with name of current namespace, lowercased */ - znode tmp; + /* CG(zend_lineno) = ast->lineno; */ + CG(zend_lineno) = zend_ast_get_lineno(ast); - tmp.op_type = IS_CONST; - tmp.u.constant = *CG(current_namespace); - Z_STRVAL(tmp.u.constant) = zend_str_tolower_dup(Z_STRVAL(tmp.u.constant), Z_STRLEN(tmp.u.constant)); - zend_do_build_namespace_name(&tmp, &tmp, name TSRMLS_CC); - *name = tmp; + switch (ast->kind) { + case ZEND_AST_ZVAL: + ZVAL_COPY(&result->u.constant, zend_ast_get_zval(ast)); + result->op_type = IS_CONST; + return; + case ZEND_AST_ZNODE: + *result = *zend_ast_get_znode(ast); + return; + case ZEND_AST_VAR: + case ZEND_AST_DIM: + case ZEND_AST_PROP: + case ZEND_AST_STATIC_PROP: + case ZEND_AST_CALL: + case ZEND_AST_METHOD_CALL: + case ZEND_AST_STATIC_CALL: + zend_compile_var(result, ast, BP_VAR_R TSRMLS_CC); + return; + case ZEND_AST_ASSIGN: + zend_compile_assign(result, ast TSRMLS_CC); + return; + case ZEND_AST_ASSIGN_REF: + zend_compile_assign_ref(result, ast TSRMLS_CC); + return; + case ZEND_AST_NEW: + zend_compile_new(result, ast TSRMLS_CC); + return; + case ZEND_AST_CLONE: + zend_compile_clone(result, ast TSRMLS_CC); + return; + case ZEND_AST_ASSIGN_OP: + zend_compile_compound_assign(result, ast TSRMLS_CC); + return; + case ZEND_AST_BINARY_OP: + zend_compile_binary_op(result, ast TSRMLS_CC); + return; + case ZEND_AST_GREATER: + case ZEND_AST_GREATER_EQUAL: + zend_compile_greater(result, ast TSRMLS_CC); + return; + case ZEND_AST_UNARY_OP: + zend_compile_unary_op(result, ast TSRMLS_CC); + return; + case ZEND_AST_UNARY_PLUS: + case ZEND_AST_UNARY_MINUS: + zend_compile_unary_pm(result, ast TSRMLS_CC); + return; + case ZEND_AST_AND: + case ZEND_AST_OR: + zend_compile_short_circuiting(result, ast TSRMLS_CC); + return; + case ZEND_AST_POST_INC: + case ZEND_AST_POST_DEC: + zend_compile_post_incdec(result, ast TSRMLS_CC); + return; + case ZEND_AST_PRE_INC: + case ZEND_AST_PRE_DEC: + zend_compile_pre_incdec(result, ast TSRMLS_CC); + return; + case ZEND_AST_CAST: + zend_compile_cast(result, ast TSRMLS_CC); + return; + case ZEND_AST_CONDITIONAL: + zend_compile_conditional(result, ast TSRMLS_CC); + return; + case ZEND_AST_COALESCE: + zend_compile_coalesce(result, ast TSRMLS_CC); + return; + case ZEND_AST_PRINT: + zend_compile_print(result, ast TSRMLS_CC); + return; + case ZEND_AST_EXIT: + zend_compile_exit(result, ast TSRMLS_CC); + return; + case ZEND_AST_YIELD: + zend_compile_yield(result, ast TSRMLS_CC); + return; + case ZEND_AST_INSTANCEOF: + zend_compile_instanceof(result, ast TSRMLS_CC); + return; + case ZEND_AST_INCLUDE_OR_EVAL: + zend_compile_include_or_eval(result, ast TSRMLS_CC); + return; + case ZEND_AST_ISSET: + case ZEND_AST_EMPTY: + zend_compile_isset_or_empty(result, ast TSRMLS_CC); + return; + case ZEND_AST_SILENCE: + zend_compile_silence(result, ast TSRMLS_CC); + return; + case ZEND_AST_SHELL_EXEC: + zend_compile_shell_exec(result, ast TSRMLS_CC); + return; + case ZEND_AST_ARRAY: + zend_compile_array(result, ast TSRMLS_CC); + return; + case ZEND_AST_CONST: + zend_compile_const(result, ast TSRMLS_CC); + return; + case ZEND_AST_CLASS_CONST: + zend_compile_class_const(result, ast TSRMLS_CC); + return; + case ZEND_AST_RESOLVE_CLASS_NAME: + zend_compile_resolve_class_name(result, ast TSRMLS_CC); + return; + case ZEND_AST_ENCAPS_LIST: + zend_compile_encaps_list(result, ast TSRMLS_CC); + return; + case ZEND_AST_MAGIC_CONST: + zend_compile_magic_const(result, ast TSRMLS_CC); + return; + case ZEND_AST_CLOSURE: + zend_compile_func_decl(result, ast TSRMLS_CC); + return; + default: + ZEND_ASSERT(0 /* not supported */); } - - opline = get_next_op(CG(active_op_array) TSRMLS_CC); - opline->opcode = ZEND_DECLARE_CONST; - SET_UNUSED(opline->result); - SET_NODE(opline->op1, name); - SET_NODE(opline->op2, value); } /* }}} */ -void zend_verify_namespace(TSRMLS_D) /* {{{ */ +void zend_compile_var(znode *result, zend_ast *ast, uint32_t type TSRMLS_DC) /* {{{ */ { - if (CG(has_bracketed_namespaces) && !CG(in_namespace)) { - zend_error(E_COMPILE_ERROR, "No code may exist outside of namespace {}"); + switch (ast->kind) { + case ZEND_AST_VAR: + zend_compile_simple_var(result, ast, type TSRMLS_CC); + return; + case ZEND_AST_DIM: + zend_compile_dim(result, ast, type TSRMLS_CC); + return; + case ZEND_AST_PROP: + zend_compile_prop(result, ast, type TSRMLS_CC); + return; + case ZEND_AST_STATIC_PROP: + zend_compile_static_prop(result, ast, type TSRMLS_CC); + return; + case ZEND_AST_CALL: + zend_compile_call(result, ast, type TSRMLS_CC); + return; + case ZEND_AST_METHOD_CALL: + zend_compile_method_call(result, ast, type TSRMLS_CC); + return; + case ZEND_AST_STATIC_CALL: + zend_compile_static_call(result, ast, type TSRMLS_CC); + return; + case ZEND_AST_ZNODE: + *result = *zend_ast_get_znode(ast); + return; + default: + if (type == BP_VAR_W || type == BP_VAR_REF + || type == BP_VAR_RW || type == BP_VAR_UNSET + ) { + /* For BC reasons =& new Foo is allowed */ + if (type != BP_VAR_REF || ast->kind != ZEND_AST_NEW) { + zend_error_noreturn(E_COMPILE_ERROR, + "Cannot use temporary expression in write context"); + } + } + + zend_compile_expr(result, ast TSRMLS_CC); + return; } } /* }}} */ -void zend_do_end_namespace(TSRMLS_D) /* {{{ */ +void zend_delayed_compile_var(znode *result, zend_ast *ast, uint32_t type TSRMLS_DC) /* {{{ */ { - CG(in_namespace) = 0; - if (CG(current_namespace)) { - zval_dtor(CG(current_namespace)); - FREE_ZVAL(CG(current_namespace)); - CG(current_namespace) = NULL; - } - if (CG(current_import)) { - zend_hash_destroy(CG(current_import)); - efree(CG(current_import)); - CG(current_import) = NULL; + zend_op *opline; + switch (ast->kind) { + case ZEND_AST_DIM: + opline = zend_delayed_compile_dim(result, ast, type TSRMLS_CC); + zend_adjust_for_fetch_type(opline, type); + return; + case ZEND_AST_PROP: + opline = zend_delayed_compile_prop(result, ast, type TSRMLS_CC); + zend_adjust_for_fetch_type(opline, type); + return; + default: + zend_compile_var(result, ast, type TSRMLS_CC); + return; } } /* }}} */ -void zend_do_end_compilation(TSRMLS_D) /* {{{ */ +void zend_eval_const_expr(zend_ast **ast_ptr TSRMLS_DC) /* {{{ */ { - CG(has_bracketed_namespaces) = 0; - zend_do_end_namespace(TSRMLS_C); -} -/* }}} */ + zend_ast *ast = *ast_ptr; + zval result; -/* {{{ zend_dirname - Returns directory name component of path */ -ZEND_API size_t zend_dirname(char *path, size_t len) -{ - register char *end = path + len - 1; - unsigned int len_adjust = 0; - -#ifdef PHP_WIN32 - /* Note that on Win32 CWD is per drive (heritage from CP/M). - * This means dirname("c:foo") maps to "c:." or "c:" - which means CWD on C: drive. - */ - if ((2 <= len) && isalpha((int)((unsigned char *)path)[0]) && (':' == path[1])) { - /* Skip over the drive spec (if any) so as not to change */ - path += 2; - len_adjust += 2; - if (2 == len) { - /* Return "c:" on Win32 for dirname("c:"). - * It would be more consistent to return "c:." - * but that would require making the string *longer*. - */ - return len; - } - } -#elif defined(NETWARE) - /* - * Find the first occurrence of : from the left - * move the path pointer to the position just after : - * increment the len_adjust to the length of path till colon character(inclusive) - * If there is no character beyond : simple return len - */ - char *colonpos = NULL; - colonpos = strchr(path, ':'); - if (colonpos != NULL) { - len_adjust = ((colonpos - path) + 1); - path += len_adjust; - if (len_adjust == len) { - return len; - } + if (!ast) { + return; } -#endif - if (len == 0) { - /* Illegal use of this function */ - return 0; - } + switch (ast->kind) { + case ZEND_AST_BINARY_OP: + zend_eval_const_expr(&ast->child[0] TSRMLS_CC); + zend_eval_const_expr(&ast->child[1] TSRMLS_CC); + if (ast->child[0]->kind != ZEND_AST_ZVAL || ast->child[1]->kind != ZEND_AST_ZVAL) { + return; + } - /* Strip trailing slashes */ - while (end >= path && IS_SLASH_P(end)) { - end--; - } - if (end < path) { - /* The path only contained slashes */ - path[0] = DEFAULT_SLASH; - path[1] = '\0'; - return 1 + len_adjust; - } + zend_ct_eval_binary_op(&result, ast->attr, + zend_ast_get_zval(ast->child[0]), zend_ast_get_zval(ast->child[1]) TSRMLS_CC); + break; + case ZEND_AST_GREATER: + case ZEND_AST_GREATER_EQUAL: + zend_eval_const_expr(&ast->child[0] TSRMLS_CC); + zend_eval_const_expr(&ast->child[1] TSRMLS_CC); + if (ast->child[0]->kind != ZEND_AST_ZVAL || ast->child[1]->kind != ZEND_AST_ZVAL) { + return; + } - /* Strip filename */ - while (end >= path && !IS_SLASH_P(end)) { - end--; - } - if (end < path) { - /* No slash found, therefore return '.' */ -#ifdef NETWARE - if (len_adjust == 0) { - path[0] = '.'; - path[1] = '\0'; - return 1; /* only one character */ - } else { - path[0] = '\0'; - return len_adjust; - } -#else - path[0] = '.'; - path[1] = '\0'; - return 1 + len_adjust; -#endif - } + zend_ct_eval_greater(&result, ast->kind, + zend_ast_get_zval(ast->child[0]), zend_ast_get_zval(ast->child[1]) TSRMLS_CC); + break; + case ZEND_AST_UNARY_PLUS: + case ZEND_AST_UNARY_MINUS: + zend_eval_const_expr(&ast->child[0] TSRMLS_CC); + if (ast->child[0]->kind != ZEND_AST_ZVAL) { + return; + } - /* Strip slashes which came before the file name */ - while (end >= path && IS_SLASH_P(end)) { - end--; - } - if (end < path) { - path[0] = DEFAULT_SLASH; - path[1] = '\0'; - return 1 + len_adjust; + zend_ct_eval_unary_pm(&result, ast->kind, + zend_ast_get_zval(ast->child[0]) TSRMLS_CC); + break; + case ZEND_AST_ARRAY: + if (!zend_try_ct_eval_array(&result, ast TSRMLS_CC)) { + return; + } + break; + case ZEND_AST_MAGIC_CONST: + if (!zend_try_ct_eval_magic_const(&result, ast TSRMLS_CC)) { + return; + } + break; + case ZEND_AST_CONST: + { + zend_ast *name_ast = ast->child[0]; + zend_bool is_fully_qualified; + zend_string *resolved_name = zend_resolve_const_name( + zend_ast_get_str(name_ast), name_ast->attr, &is_fully_qualified TSRMLS_CC); + + if (!zend_try_ct_eval_const(&result, resolved_name, is_fully_qualified TSRMLS_CC)) { + zend_string_release(resolved_name); + return; + } + + zend_string_release(resolved_name); + break; + } + default: + return; } - *(end+1) = '\0'; - return (size_t)(end + 1 - path) + len_adjust; + zend_ast_destroy(ast); + *ast_ptr = zend_ast_create_zval(&result); } /* }}} */ |