diff options
Diffstat (limited to 'sapi/phpdbg/phpdbg_parser.y')
| -rw-r--r-- | sapi/phpdbg/phpdbg_parser.y | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/sapi/phpdbg/phpdbg_parser.y b/sapi/phpdbg/phpdbg_parser.y new file mode 100644 index 0000000000..702bf78455 --- /dev/null +++ b/sapi/phpdbg/phpdbg_parser.y @@ -0,0 +1,184 @@ +%{ + +/* + * phpdbg_parser.y + * (from php-src root) + * flex sapi/phpdbg/dev/phpdbg_lexer.l + * bison sapi/phpdbg/dev/phpdbg_parser.y + */ + +#include "phpdbg.h" +#include "phpdbg_cmd.h" +#include "phpdbg_utils.h" +#include "phpdbg_cmd.h" +#include "phpdbg_prompt.h" + +#define YYSTYPE phpdbg_param_t + +#include "phpdbg_parser.h" +#include "phpdbg_lexer.h" + +#undef yyerror +static int yyerror(void ***tsrm_ls, const char *msg); + +ZEND_EXTERN_MODULE_GLOBALS(phpdbg); + +%} + +%pure-parser +%error-verbose + +%code requires { +#include "phpdbg.h" +#ifndef YY_TYPEDEF_YY_SCANNER_T +#define YY_TYPEDEF_YY_SCANNER_T +typedef void* yyscan_t; +#endif +} + +%parse-param { void *tsrm_ls } + +%output "sapi/phpdbg/phpdbg_parser.c" +%defines "sapi/phpdbg/phpdbg_parser.h" + +%token T_EVAL "eval" +%token T_RUN "run" +%token T_SHELL "shell" +%token T_IF "if (condition)" +%token T_TRUTHY "truthy (true, on, yes or enabled)" +%token T_FALSY "falsy (false, off, no or disabled)" +%token T_STRING "string (some input, perhaps)" +%token T_COLON ": (colon)" +%token T_DCOLON ":: (double colon)" +%token T_POUND "# (pound sign)" +%token T_PROTO "protocol (file://)" +%token T_DIGITS "digits (numbers)" +%token T_LITERAL "literal (string)" +%token T_ADDR "address" +%token T_OPCODE "opcode" +%token T_ID "identifier (command or function name)" +%token T_INPUT "input (input string or data)" +%token T_UNEXPECTED "input" + +%% /* Rules */ + +input + : parameters + | full_expression { phpdbg_stack_push(PHPDBG_G(parser_stack), &$1); } + | /* nothing */ + ; + +parameters + : parameter { phpdbg_stack_push(PHPDBG_G(parser_stack), &$1); } + | parameters parameter { phpdbg_stack_push(PHPDBG_G(parser_stack), &$2); } + ; + +parameter + : T_ID T_COLON T_DIGITS { + $$.type = FILE_PARAM; + $$.file.name = $2.str; + $$.file.line = $3.num; + } + | T_ID T_COLON T_POUND T_DIGITS { + $$.type = NUMERIC_FILE_PARAM; + $$.file.name = $1.str; + $$.file.line = $4.num; + } + | T_PROTO T_ID T_COLON T_DIGITS { + $$.type = FILE_PARAM; + $$.file.name = malloc($1.len + $2.len + 1); + if ($$.file.name) { + memcpy(&$$.file.name[0], $1.str, $1.len); + memcpy(&$$.file.name[$1.len], $2.str, $2.len); + $$.file.name[$1.len + $2.len] = '\0'; + } + $$.file.line = $4.num; + } + | T_PROTO T_ID T_COLON T_POUND T_DIGITS { + $$.type = NUMERIC_FILE_PARAM; + $$.file.name = malloc($1.len + $2.len + 1); + if ($$.file.name) { + memcpy(&$$.file.name[0], $1.str, $1.len); + memcpy(&$$.file.name[$1.len], $2.str, $2.len); + $$.file.name[$1.len + $2.len] = '\0'; + } + $$.file.line = $5.num; + } + | T_ID T_DCOLON T_ID { + $$.type = METHOD_PARAM; + $$.method.class = $1.str; + $$.method.name = $3.str; + } + | T_ID T_DCOLON T_ID T_POUND T_DIGITS { + $$.type = NUMERIC_METHOD_PARAM; + $$.method.class = $1.str; + $$.method.name = $3.str; + $$.num = $5.num; + } + | T_ID T_POUND T_DIGITS { + $$.type = NUMERIC_FUNCTION_PARAM; + $$.str = $1.str; + $$.len = $1.len; + $$.num = $3.num; + } + | T_IF T_INPUT { + $$.type = COND_PARAM; + $$.str = $2.str; + $$.len = $2.len; + } + | T_OPCODE { $$ = $1; } + | T_ADDR { $$ = $1; } + | T_LITERAL { $$ = $1; } + | T_TRUTHY { $$ = $1; } + | T_FALSY { $$ = $1; } + | T_DIGITS { $$ = $1; } + | T_ID { $$ = $1; } + ; + +full_expression + : T_EVAL T_INPUT { + $$.type = EVAL_PARAM; + $$.str = $2.str; + $$.len = $2.len; + } + | T_SHELL T_INPUT { + $$.type = SHELL_PARAM; + $$.str = $2.str; + $$.len = $2.len; + } + | T_RUN { + $$.type = RUN_PARAM; + $$.len = 0; + } + | T_RUN T_INPUT { + $$.type = RUN_PARAM; + $$.str = $2.str; + $$.len = $2.len; + } + ; + +%% + +static int yyerror(void ***tsrm_ls, const char *msg) { + phpdbg_error("Parse Error: %s", msg); + + { + const phpdbg_param_t *top = PHPDBG_G(parser_stack); + + while (top) { + phpdbg_param_debug(top, "--> "); + top = top->next; + } + } + return 0; +} + +int phpdbg_do_parse(phpdbg_param_t *stack, char *input TSRMLS_DC) { + phpdbg_init_lexer(stack, input TSRMLS_CC); + +#ifdef ZTS + return yyparse(TSRMLS_C); +#else + return yyparse(NULL); +#endif +} |