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b03cafd19c
This is a bit tricky: In this cases we have "namespace as", which means that we will only recognize "namespace" as an identifier when the lookahead token is already at the "as". This means that zend_lex_tstring picks up the wrong identifier. We solve this by actually assigning the identifier as the semantic value on the parser stack -- as in almost all cases we will not actually need the identifier, this is just an (offset, size) reference, not a copy of the string. Additionally, we need to teach the lexer feedback mechanism used by tokenizer TOKEN_PARSE mode to apply feedback to something other than the very last token. To that purpose we pass through the token text and check the tokens in reverse order to find the right one. Closes GH-5668.
86 lines
3.0 KiB
C
86 lines
3.0 KiB
C
/*
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+----------------------------------------------------------------------+
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| Zend Engine |
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+----------------------------------------------------------------------+
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| Copyright (c) Zend Technologies Ltd. (http://www.zend.com) |
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+----------------------------------------------------------------------+
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| This source file is subject to version 2.00 of the Zend license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available through the world-wide-web at the following url: |
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| http://www.zend.com/license/2_00.txt. |
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| If you did not receive a copy of the Zend license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@zend.com so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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| Authors: Andi Gutmans <andi@php.net> |
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| Zeev Suraski <zeev@php.net> |
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+----------------------------------------------------------------------+
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*/
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#ifndef ZEND_SCANNER_H
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#define ZEND_SCANNER_H
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typedef struct _zend_lex_state {
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unsigned int yy_leng;
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unsigned char *yy_start;
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unsigned char *yy_text;
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unsigned char *yy_cursor;
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unsigned char *yy_marker;
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unsigned char *yy_limit;
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int yy_state;
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zend_stack state_stack;
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zend_ptr_stack heredoc_label_stack;
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zend_stack nest_location_stack; /* for syntax error reporting */
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zend_file_handle *in;
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uint32_t lineno;
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zend_string *filename;
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/* original (unfiltered) script */
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unsigned char *script_org;
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size_t script_org_size;
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/* filtered script */
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unsigned char *script_filtered;
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size_t script_filtered_size;
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/* input/output filters */
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zend_encoding_filter input_filter;
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zend_encoding_filter output_filter;
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const zend_encoding *script_encoding;
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/* hooks */
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void (*on_event)(
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zend_php_scanner_event event, int token, int line,
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const char *text, size_t length, void *context);
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void *on_event_context;
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zend_ast *ast;
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zend_arena *ast_arena;
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} zend_lex_state;
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typedef struct _zend_heredoc_label {
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char *label;
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int length;
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int indentation;
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zend_bool indentation_uses_spaces;
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} zend_heredoc_label;
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/* Track locations of unclosed {, [, (, etc. for better syntax error reporting */
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typedef struct _zend_nest_location {
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char text;
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int lineno;
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} zend_nest_location;
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BEGIN_EXTERN_C()
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ZEND_API void zend_save_lexical_state(zend_lex_state *lex_state);
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ZEND_API void zend_restore_lexical_state(zend_lex_state *lex_state);
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ZEND_API int zend_prepare_string_for_scanning(zval *str, const char *filename);
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ZEND_API void zend_multibyte_yyinput_again(zend_encoding_filter old_input_filter, const zend_encoding *old_encoding);
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ZEND_API int zend_multibyte_set_filter(const zend_encoding *onetime_encoding);
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ZEND_API void zend_lex_tstring(zval *zv, zend_lexer_ident_ref ident_ref);
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END_EXTERN_C()
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#endif
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