php-src/ext/tokenizer/tokenizer.c
Nikita Popov a49ce7bb91 Don't return T_ERROR from token_get_all()
This turned out to be rather inconvenient after all. Instead just
return the same output we did on PHP 5. If people want to have an
error, use TOKEN_PARSE.
2015-07-09 23:02:21 +02:00

314 lines
8.1 KiB
C

/*
+----------------------------------------------------------------------+
| PHP Version 7 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2015 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP 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.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Author: Andrei Zmievski <andrei@php.net> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "php.h"
#include "php_ini.h"
#include "ext/standard/info.h"
#include "php_tokenizer.h"
#include "zend.h"
#include "zend_exceptions.h"
#include "zend_language_scanner.h"
#include "zend_language_scanner_defs.h"
#include <zend_language_parser.h>
#define zendtext LANG_SCNG(yy_text)
#define zendleng LANG_SCNG(yy_leng)
#define zendcursor LANG_SCNG(yy_cursor)
#define zendlimit LANG_SCNG(yy_limit)
#define TOKEN_PARSE 1
void tokenizer_token_get_all_register_constants(INIT_FUNC_ARGS) {
REGISTER_LONG_CONSTANT("TOKEN_PARSE", TOKEN_PARSE, CONST_CS|CONST_PERSISTENT);
}
/* {{{ arginfo */
ZEND_BEGIN_ARG_INFO_EX(arginfo_token_get_all, 0, 0, 1)
ZEND_ARG_INFO(0, source)
ZEND_ARG_INFO(0, flags)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_token_name, 0, 0, 1)
ZEND_ARG_INFO(0, token)
ZEND_END_ARG_INFO()
/* }}} */
/* {{{ tokenizer_functions[]
*
* Every user visible function must have an entry in tokenizer_functions[].
*/
const zend_function_entry tokenizer_functions[] = {
PHP_FE(token_get_all, arginfo_token_get_all)
PHP_FE(token_name, arginfo_token_name)
PHP_FE_END
};
/* }}} */
/* {{{ tokenizer_module_entry
*/
zend_module_entry tokenizer_module_entry = {
STANDARD_MODULE_HEADER,
"tokenizer",
tokenizer_functions,
PHP_MINIT(tokenizer),
NULL,
NULL,
NULL,
PHP_MINFO(tokenizer),
PHP_TOKENIZER_VERSION,
STANDARD_MODULE_PROPERTIES
};
/* }}} */
#ifdef COMPILE_DL_TOKENIZER
ZEND_GET_MODULE(tokenizer)
#endif
/* {{{ PHP_MINIT_FUNCTION
*/
PHP_MINIT_FUNCTION(tokenizer)
{
tokenizer_register_constants(INIT_FUNC_ARGS_PASSTHRU);
tokenizer_token_get_all_register_constants(INIT_FUNC_ARGS_PASSTHRU);
return SUCCESS;
}
/* }}} */
/* {{{ PHP_MINFO_FUNCTION
*/
PHP_MINFO_FUNCTION(tokenizer)
{
php_info_print_table_start();
php_info_print_table_row(2, "Tokenizer Support", "enabled");
php_info_print_table_end();
}
/* }}} */
static zend_bool tokenize(zval *return_value, zend_string *source)
{
zval source_zval;
zend_lex_state original_lex_state;
zval token;
zval keyword;
int token_type;
int token_line = 1;
int need_tokens = -1; /* for __halt_compiler lexing. -1 = disabled */
ZVAL_STR_COPY(&source_zval, source);
zend_save_lexical_state(&original_lex_state);
if (zend_prepare_string_for_scanning(&source_zval, "") == FAILURE) {
zend_restore_lexical_state(&original_lex_state);
return 0;
}
LANG_SCNG(yy_state) = yycINITIAL;
array_init(return_value);
ZVAL_UNDEF(&token);
while ((token_type = lex_scan(&token))) {
if (token_type == T_CLOSE_TAG && zendtext[zendleng - 1] != '>') {
CG(zend_lineno)++;
}
if (token_type >= 256) {
array_init(&keyword);
add_next_index_long(&keyword, token_type);
if (token_type == T_END_HEREDOC) {
if (CG(increment_lineno)) {
token_line = ++CG(zend_lineno);
CG(increment_lineno) = 0;
}
}
add_next_index_stringl(&keyword, (char *)zendtext, zendleng);
add_next_index_long(&keyword, token_line);
add_next_index_zval(return_value, &keyword);
} else {
add_next_index_stringl(return_value, (char *)zendtext, zendleng);
}
if (Z_TYPE(token) != IS_UNDEF) {
zval_dtor(&token);
ZVAL_UNDEF(&token);
}
/* after T_HALT_COMPILER collect the next three non-dropped tokens */
if (need_tokens != -1) {
if (token_type != T_WHITESPACE && token_type != T_OPEN_TAG
&& token_type != T_COMMENT && token_type != T_DOC_COMMENT
&& --need_tokens == 0
) {
/* fetch the rest into a T_INLINE_HTML */
if (zendcursor != zendlimit) {
array_init(&keyword);
add_next_index_long(&keyword, T_INLINE_HTML);
add_next_index_stringl(&keyword, (char *)zendcursor, zendlimit - zendcursor);
add_next_index_long(&keyword, token_line);
add_next_index_zval(return_value, &keyword);
}
break;
}
} else if (token_type == T_HALT_COMPILER) {
need_tokens = 3;
}
token_line = CG(zend_lineno);
}
zval_dtor(&source_zval);
zend_restore_lexical_state(&original_lex_state);
return 1;
}
zval token_stream;
void on_event(zend_php_scanner_event event, int token, int line)
{
zval keyword;
HashTable *tokens_ht;
zval *token_zv;
switch (event) {
case ON_TOKEN:
if (token == END) break;
if (token >= 256) {
array_init(&keyword);
add_next_index_long(&keyword, token);
add_next_index_stringl(&keyword, (char *)LANG_SCNG(yy_text), LANG_SCNG(yy_leng));
add_next_index_long(&keyword, line);
add_next_index_zval(&token_stream, &keyword);
} else {
add_next_index_stringl(&token_stream, (char *)LANG_SCNG(yy_text), LANG_SCNG(yy_leng));
}
break;
case ON_FEEDBACK:
tokens_ht = Z_ARRVAL(token_stream);
token_zv = zend_hash_index_find(tokens_ht, zend_hash_num_elements(tokens_ht) - 1);
if (token_zv && Z_TYPE_P(token_zv) == IS_ARRAY) {
ZVAL_LONG(zend_hash_index_find(Z_ARRVAL_P(token_zv), 0), token);
}
break;
case ON_STOP:
if (LANG_SCNG(yy_cursor) != LANG_SCNG(yy_limit)) {
array_init(&keyword);
add_next_index_long(&keyword, T_INLINE_HTML);
add_next_index_stringl(&keyword,
(char *)LANG_SCNG(yy_cursor), LANG_SCNG(yy_limit) - LANG_SCNG(yy_cursor));
add_next_index_long(&keyword, CG(zend_lineno));
add_next_index_zval(&token_stream, &keyword);
}
break;
}
}
static zend_bool tokenize_parse(zval *return_value, zend_string *source)
{
zval source_zval;
zend_lex_state original_lex_state;
zend_bool original_in_compilation;
zend_bool success;
ZVAL_STR_COPY(&source_zval, source);
original_in_compilation = CG(in_compilation);
CG(in_compilation) = 1;
zend_save_lexical_state(&original_lex_state);
if ((success = (zend_prepare_string_for_scanning(&source_zval, "") == SUCCESS))) {
CG(ast) = NULL;
CG(ast_arena) = zend_arena_create(1024 * 32);
LANG_SCNG(yy_state) = yycINITIAL;
LANG_SCNG(on_event) = on_event;
array_init(&token_stream);
if((success = (zendparse() == SUCCESS))) {
ZVAL_COPY_VALUE(return_value, &token_stream);
} else {
zval_ptr_dtor(&token_stream);
}
zend_ast_destroy(CG(ast));
zend_arena_destroy(CG(ast_arena));
}
/* restore compiler and scanner global states */
zend_restore_lexical_state(&original_lex_state);
CG(in_compilation) = original_in_compilation;
zval_dtor(&source_zval);
return success;
}
/* }}} */
/* {{{ proto array token_get_all(string source [, int flags])
*/
PHP_FUNCTION(token_get_all)
{
zend_string *source;
zend_long flags = 0;
zend_bool success;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "S|l", &source, &flags) == FAILURE) {
return;
}
if (flags & TOKEN_PARSE) {
success = tokenize_parse(return_value, source);
} else {
success = tokenize(return_value, source);
/* Normal token_get_all() should not throw. */
zend_clear_exception();
}
if (!success) RETURN_FALSE;
}
/* }}} */
/* {{{ proto string token_name(int type)
*/
PHP_FUNCTION(token_name)
{
zend_long type;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "l", &type) == FAILURE) {
return;
}
RETVAL_STRING(get_token_type_name(type));
}
/* }}} */
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
* vim600: noet sw=4 ts=4 fdm=marker
* vim<600: noet sw=4 ts=4
*/