diff options
Diffstat (limited to 'ext/reflection/php_reflection.c')
| -rw-r--r-- | ext/reflection/php_reflection.c | 252 |
1 files changed, 168 insertions, 84 deletions
diff --git a/ext/reflection/php_reflection.c b/ext/reflection/php_reflection.c index 6b9ca5b595..5f7f5270a1 100644 --- a/ext/reflection/php_reflection.c +++ b/ext/reflection/php_reflection.c @@ -558,8 +558,7 @@ static void _class_const_string(smart_str *str, char *name, zend_class_constant } /* }}} */ -/* {{{ _get_recv_opcode */ -static zend_op* _get_recv_op(zend_op_array *op_array, uint32_t offset) +static zend_op *get_recv_op(zend_op_array *op_array, uint32_t offset) { zend_op *op = op_array->opcodes; zend_op *end = op + op_array->last; @@ -573,9 +572,18 @@ static zend_op* _get_recv_op(zend_op_array *op_array, uint32_t offset) } ++op; } + ZEND_ASSERT(0 && "Failed to find op"); return NULL; } -/* }}} */ + +static zval *get_default_from_recv(zend_op_array *op_array, uint32_t offset) { + zend_op *recv = get_recv_op(op_array, offset); + if (!recv || recv->opcode != ZEND_RECV_INIT) { + return NULL; + } + + return RT_CONSTANT(recv, recv->op2); +} static int format_default_value(smart_str *str, zval *value, zend_class_entry *scope) { zval zv; @@ -639,12 +647,21 @@ static void _parameter_string(smart_str *str, zend_function *fptr, struct _zend_ smart_str_append_printf(str, "$%s", has_internal_arg_info(fptr) ? ((zend_internal_arg_info*)arg_info)->name : ZSTR_VAL(arg_info->name)); - if (fptr->type == ZEND_USER_FUNCTION && !required) { - zend_op *precv = _get_recv_op((zend_op_array*)fptr, offset); - if (precv && precv->opcode == ZEND_RECV_INIT && precv->op2_type != IS_UNUSED) { + if (!required) { + if (fptr->type == ZEND_INTERNAL_FUNCTION) { smart_str_appends(str, " = "); - if (format_default_value(str, RT_CONSTANT(precv, precv->op2), fptr->common.scope) == FAILURE) { - return; + if (((zend_internal_arg_info*)arg_info)->default_value) { + smart_str_appends(str, ((zend_internal_arg_info*)arg_info)->default_value); + } else { + smart_str_appends(str, "<default>"); + } + } else { + zval *default_value = get_default_from_recv((zend_op_array*)fptr, offset); + if (default_value) { + smart_str_appends(str, " = "); + if (format_default_value(str, default_value, fptr->common.scope) == FAILURE) { + return; + } } } } @@ -1275,49 +1292,116 @@ static void reflection_class_constant_factory(zend_string *name_str, zend_class_ } /* }}} */ -/* {{{ _reflection_param_get_default_param */ -static parameter_reference *_reflection_param_get_default_param(INTERNAL_FUNCTION_PARAMETERS) -{ - reflection_object *intern; - parameter_reference *param; +static int get_default_via_ast(zval *default_value_zval, const char *default_value) { + zend_ast *ast; + zend_arena *ast_arena; - intern = Z_REFLECTION_P(ZEND_THIS); - if (intern->ptr == NULL) { - if (EG(exception) && EG(exception)->ce == reflection_exception_ptr) { - return NULL; - } - zend_throw_error(NULL, "Internal error: Failed to retrieve the reflection object"); - return NULL; + smart_str code = {0}; + smart_str_appends(&code, "<?php "); + smart_str_appends(&code, default_value); + smart_str_appendc(&code, ';'); + smart_str_0(&code); + + ast = zend_compile_string_to_ast(code.s, &ast_arena, ""); + smart_str_free(&code); + + if (!ast) { + return FAILURE; } - param = intern->ptr; - if (param->fptr->type != ZEND_USER_FUNCTION) { - zend_throw_exception_ex(reflection_exception_ptr, 0, "Cannot determine default value for internal functions"); - return NULL; + zend_ast_list *statement_list = zend_ast_get_list(ast); + zend_ast *const_expression_ast = statement_list->child[0]; + + zend_arena *original_ast_arena = CG(ast_arena); + uint32_t original_compiler_options = CG(compiler_options); + zend_file_context original_file_context; + CG(ast_arena) = ast_arena; + /* Disable constant substitution, to make getDefaultValueConstant() work. */ + CG(compiler_options) |= ZEND_COMPILE_NO_CONSTANT_SUBSTITUTION | ZEND_COMPILE_NO_PERSISTENT_CONSTANT_SUBSTITUTION; + zend_file_context_begin(&original_file_context); + zend_const_expr_to_zval(default_value_zval, const_expression_ast); + CG(ast_arena) = original_ast_arena; + CG(compiler_options) = original_compiler_options; + zend_file_context_end(&original_file_context); + + zend_ast_destroy(ast); + zend_arena_destroy(ast_arena); + + return SUCCESS; +} + +static zend_string *try_parse_string(const char *str, size_t len, char quote) { + if (len == 0) { + return ZSTR_EMPTY_ALLOC(); } - return param; + for (size_t i = 0; i < len; i++) { + if (str[i] == '\\' || str[i] == quote) { + return NULL; + } + } + return zend_string_init(str, len, 0); } -/* }}} */ -/* {{{ _reflection_param_get_default_precv */ -static zend_op *_reflection_param_get_default_precv(INTERNAL_FUNCTION_PARAMETERS, parameter_reference *param) +static int get_default_from_arg_info(zval *default_value_zval, zend_internal_arg_info *arg_info) { - zend_op *precv; - - if (param == NULL) { - return NULL; + const char *default_value = arg_info->default_value; + if (!default_value) { + return FAILURE; } - precv = _get_recv_op((zend_op_array*)param->fptr, param->offset); - if (!precv || precv->opcode != ZEND_RECV_INIT || precv->op2_type == IS_UNUSED) { - zend_throw_exception_ex(reflection_exception_ptr, 0, "Internal error: Failed to retrieve the default value"); - return NULL; + /* Avoid going through the full AST machinery for some simple and common cases. */ + size_t default_value_len = strlen(default_value); + zend_ulong lval; + if (default_value_len == sizeof("null")-1 + && !memcmp(default_value, "null", sizeof("null")-1)) { + ZVAL_NULL(default_value_zval); + return SUCCESS; + } else if (default_value_len == sizeof("true")-1 + && !memcmp(default_value, "true", sizeof("true")-1)) { + ZVAL_TRUE(default_value_zval); + return SUCCESS; + } else if (default_value_len == sizeof("false")-1 + && !memcmp(default_value, "false", sizeof("false")-1)) { + ZVAL_FALSE(default_value_zval); + return SUCCESS; + } else if (default_value_len >= 2 + && (default_value[0] == '\'' || default_value[0] == '"') + && default_value[default_value_len - 1] == default_value[0]) { + zend_string *str = try_parse_string( + default_value + 1, default_value_len - 2, default_value[0]); + if (str) { + ZVAL_STR(default_value_zval, str); + return SUCCESS; + } + } else if (default_value_len == sizeof("[]")-1 + && !memcmp(default_value, "[]", sizeof("[]")-1)) { + ZVAL_EMPTY_ARRAY(default_value_zval); + return SUCCESS; + } else if (ZEND_HANDLE_NUMERIC_STR(default_value, default_value_len, lval)) { + ZVAL_LONG(default_value_zval, lval); + return SUCCESS; } - return precv; +#if 0 + fprintf(stderr, "Evaluating %s via AST\n", default_value); +#endif + return get_default_via_ast(default_value_zval, default_value); +} + +static int get_parameter_default(zval *result, parameter_reference *param) { + if (param->fptr->type == ZEND_INTERNAL_FUNCTION) { + return get_default_from_arg_info(result, (zend_internal_arg_info*) param->arg_info); + } else { + zval *default_value = get_default_from_recv((zend_op_array *) param->fptr, param->offset); + if (!default_value) { + return FAILURE; + } + + ZVAL_COPY(result, default_value); + return SUCCESS; + } } -/* }}} */ /* {{{ Preventing __clone from being called */ ZEND_METHOD(reflection, __clone) @@ -2612,23 +2696,19 @@ ZEND_METHOD(reflection_parameter, isDefaultValueAvailable) { reflection_object *intern; parameter_reference *param; - zend_op *precv; if (zend_parse_parameters_none() == FAILURE) { RETURN_THROWS(); } - GET_REFLECTION_OBJECT_PTR(param); - if (param->fptr->type != ZEND_USER_FUNCTION) - { - RETURN_FALSE; - } + GET_REFLECTION_OBJECT_PTR(param); - precv = _get_recv_op((zend_op_array*)param->fptr, param->offset); - if (!precv || precv->opcode != ZEND_RECV_INIT || precv->op2_type == IS_UNUSED) { - RETURN_FALSE; + if (param->fptr->type == ZEND_INTERNAL_FUNCTION) { + RETURN_BOOL(((zend_internal_arg_info*) (param->arg_info))->default_value); + } else { + zval *default_value = get_default_from_recv((zend_op_array *)param->fptr, param->offset); + RETURN_BOOL(default_value != NULL); } - RETURN_TRUE; } /* }}} */ @@ -2636,24 +2716,21 @@ ZEND_METHOD(reflection_parameter, isDefaultValueAvailable) Returns the default value of this parameter or throws an exception */ ZEND_METHOD(reflection_parameter, getDefaultValue) { + reflection_object *intern; parameter_reference *param; - zend_op *precv; if (zend_parse_parameters_none() == FAILURE) { RETURN_THROWS(); } - param = _reflection_param_get_default_param(INTERNAL_FUNCTION_PARAM_PASSTHRU); - if (!param) { - return; - } + GET_REFLECTION_OBJECT_PTR(param); - precv = _reflection_param_get_default_precv(INTERNAL_FUNCTION_PARAM_PASSTHRU, param); - if (!precv) { - return; + if (get_parameter_default(return_value, param) == FAILURE) { + zend_throw_exception_ex(reflection_exception_ptr, 0, + "Internal error: Failed to retrieve the default value"); + RETURN_THROWS(); } - ZVAL_COPY(return_value, RT_CONSTANT(precv, precv->op2)); if (Z_TYPE_P(return_value) == IS_CONSTANT_AST) { zval_update_constant_ex(return_value, param->fptr->common.scope); } @@ -2664,29 +2741,29 @@ ZEND_METHOD(reflection_parameter, getDefaultValue) Returns whether the default value of this parameter is constant */ ZEND_METHOD(reflection_parameter, isDefaultValueConstant) { - zend_op *precv; + reflection_object *intern; parameter_reference *param; if (zend_parse_parameters_none() == FAILURE) { RETURN_THROWS(); } - param = _reflection_param_get_default_param(INTERNAL_FUNCTION_PARAM_PASSTHRU); - if (!param) { - RETURN_FALSE; - } - - precv = _reflection_param_get_default_precv(INTERNAL_FUNCTION_PARAM_PASSTHRU, param); - if (precv && Z_TYPE_P(RT_CONSTANT(precv, precv->op2)) == IS_CONSTANT_AST) { - zend_ast *ast = Z_ASTVAL_P(RT_CONSTANT(precv, precv->op2)); + GET_REFLECTION_OBJECT_PTR(param); - if (ast->kind == ZEND_AST_CONSTANT - || ast->kind == ZEND_AST_CONSTANT_CLASS) { - RETURN_TRUE; - } + zval default_value; + if (get_parameter_default(&default_value, param) == FAILURE) { + zend_throw_exception_ex(reflection_exception_ptr, 0, + "Internal error: Failed to retrieve the default value"); + RETURN_THROWS(); } - RETURN_FALSE; + if (Z_TYPE(default_value) == IS_CONSTANT_AST) { + zend_ast *ast = Z_ASTVAL(default_value); + RETVAL_BOOL(ast->kind == ZEND_AST_CONSTANT || ast->kind == ZEND_AST_CONSTANT_CLASS); + zval_ptr_dtor_nogc(&default_value); + } else { + RETURN_FALSE; + } } /* }}} */ @@ -2694,30 +2771,37 @@ ZEND_METHOD(reflection_parameter, isDefaultValueConstant) Returns the default value's constant name if default value is constant or null */ ZEND_METHOD(reflection_parameter, getDefaultValueConstantName) { - zend_op *precv; + reflection_object *intern; parameter_reference *param; if (zend_parse_parameters_none() == FAILURE) { RETURN_THROWS(); } - param = _reflection_param_get_default_param(INTERNAL_FUNCTION_PARAM_PASSTHRU); - if (!param) { - return; + GET_REFLECTION_OBJECT_PTR(param); + + zval default_value; + if (get_parameter_default(&default_value, param) == FAILURE) { + zend_throw_exception_ex(reflection_exception_ptr, 0, + "Internal error: Failed to retrieve the default value"); + RETURN_THROWS(); } - precv = _reflection_param_get_default_precv(INTERNAL_FUNCTION_PARAM_PASSTHRU, param); - if (precv && Z_TYPE_P(RT_CONSTANT(precv, precv->op2)) == IS_CONSTANT_AST) { - zend_ast *ast = Z_ASTVAL_P(RT_CONSTANT(precv, precv->op2)); + if (Z_TYPE(default_value) != IS_CONSTANT_AST) { + zval_ptr_dtor_nogc(&default_value); + RETURN_NULL(); + } - if (ast->kind == ZEND_AST_CONSTANT) { - RETURN_STR_COPY(zend_ast_get_constant_name(ast)); - } else if (ast->kind == ZEND_AST_CONSTANT_CLASS) { - RETURN_STRINGL("__CLASS__", sizeof("__CLASS__")-1); - } + zend_ast *ast = Z_ASTVAL(default_value); + if (ast->kind == ZEND_AST_CONSTANT) { + RETVAL_STR_COPY(zend_ast_get_constant_name(ast)); + } else if (ast->kind == ZEND_AST_CONSTANT_CLASS) { + RETVAL_STRINGL("__CLASS__", sizeof("__CLASS__")-1); + } else { + RETVAL_NULL(); } + zval_ptr_dtor_nogc(&default_value); } -/* }}} */ /* {{{ proto public bool ReflectionParameter::isVariadic() Returns whether this parameter is a variadic parameter */ |