zend_language_scanner.h

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/*
   +----------------------------------------------------------------------+
   | Zend Engine                                                          |
   +----------------------------------------------------------------------+
   | Copyright (c) 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        |
   | available through the world-wide-web at the following url:           |
   | http://www.zend.com/license/2_00.txt.                                |
   | If you did not receive a copy of the Zend license and are unable to  |
   | obtain it through the world-wide-web, please send a note to          |
   | license@zend.com so we can mail you a copy immediately.              |
   +----------------------------------------------------------------------+
   | Authors: Andi Gutmans <andi@php.net>                                 |
   |          Zeev Suraski <zeev@php.net>                                 |
   +----------------------------------------------------------------------+
*/
 
#ifndef ZEND_SCANNER_H
#define ZEND_SCANNER_H
 
#include "zend_globals.h"
 
typedef struct _zend_lex_state {
    unsigned int yy_leng;
    unsigned char *yy_start;
    unsigned char *yy_text;
    unsigned char *yy_cursor;
    unsigned char *yy_marker;
    unsigned char *yy_limit;
    int yy_state;
    zend_stack state_stack;
    zend_ptr_stack heredoc_label_stack;
    zend_stack nest_location_stack; /* for syntax error reporting */
 
    zend_file_handle *in;
    uint32_t lineno;
    zend_string *filename;
 
    /* original (unfiltered) script */
    unsigned char *script_org;
    size_t script_org_size;
 
    /* filtered script */
    unsigned char *script_filtered;
    size_t script_filtered_size;
 
    /* input/output filters */
    zend_encoding_filter input_filter;
    zend_encoding_filter output_filter;
    const zend_encoding *script_encoding;
 
    /* hooks */
    void (*on_event)(
        zend_php_scanner_event event, int token, int line,
        const char *text, size_t length, void *context);
    void *on_event_context;
 
    zend_ast *ast;
    zend_arena *ast_arena;
} zend_lex_state;
 
typedef struct _zend_heredoc_label {
    char *label;
    int length;
    int indentation;
    bool indentation_uses_spaces;
} zend_heredoc_label;
 
/* Track locations of unclosed {, [, (, etc. for better syntax error reporting */
typedef struct _zend_nest_location {
    char text;
    int  lineno;
} zend_nest_location;
 
BEGIN_EXTERN_C()
ZEND_API void zend_save_lexical_state(zend_lex_state *lex_state);
ZEND_API void zend_restore_lexical_state(zend_lex_state *lex_state);
ZEND_API void zend_prepare_string_for_scanning(zval *str, zend_string *filename);
ZEND_API void zend_multibyte_yyinput_again(zend_encoding_filter old_input_filter, const zend_encoding *old_encoding);
ZEND_API zend_result zend_multibyte_set_filter(const zend_encoding *onetime_encoding);
ZEND_API zend_result zend_lex_tstring(zval *zv, unsigned char *ident);
 
END_EXTERN_C()
 
#endif