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https://github.com/jerryscript-project/jerryscript.git
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2c72bb1139
Move RegExp bytecode functions to a separate file. Optimize bytecode lenght on character matching. Implement a basic RegExp cache to optimize memory usage on duplicated RegExp in JS files. Also fix minor style issues and add missing comments. Improve existing comments. JerryScript-DCO-1.0-Signed-off-by: László Langó llango.u-szeged@partner.samsung.com
123 lines
3.5 KiB
C
123 lines
3.5 KiB
C
/* Copyright 2015-2016 Samsung Electronics Co., Ltd.
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* Copyright 2015-2016 University of Szeged.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef RE_PARSER_H
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#define RE_PARSER_H
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#ifndef CONFIG_ECMA_COMPACT_PROFILE_DISABLE_REGEXP_BUILTIN
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/** \addtogroup parser Parser
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* @{
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*
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* \addtogroup regexparser Regular expression
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* @{
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*
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* \addtogroup regexparser_bytecode Bytecode
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* @{
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*/
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/**
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* RegExp token type definitions
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*/
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typedef enum
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{
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RE_TOK_EOF, /**< EOF */
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RE_TOK_BACKREFERENCE, /**< \[0..9] */
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RE_TOK_CHAR, /**< any character */
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RE_TOK_ALTERNATIVE, /**< | */
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RE_TOK_ASSERT_START, /**< ^ */
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RE_TOK_ASSERT_END, /**< $ */
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RE_TOK_PERIOD, /**< . */
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RE_TOK_START_CAPTURE_GROUP, /**< ( */
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RE_TOK_START_NON_CAPTURE_GROUP, /**< (?: */
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RE_TOK_END_GROUP, /**< ')' */
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RE_TOK_ASSERT_START_POS_LOOKAHEAD, /**< (?= */
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RE_TOK_ASSERT_START_NEG_LOOKAHEAD, /**< (?! */
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RE_TOK_ASSERT_WORD_BOUNDARY, /**< \b */
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RE_TOK_ASSERT_NOT_WORD_BOUNDARY, /**< \B */
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RE_TOK_DIGIT, /**< \d */
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RE_TOK_NOT_DIGIT, /**< \D */
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RE_TOK_WHITE, /**< \s */
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RE_TOK_NOT_WHITE, /**< \S */
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RE_TOK_WORD_CHAR, /**< \w */
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RE_TOK_NOT_WORD_CHAR, /**< \W */
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RE_TOK_START_CHAR_CLASS, /**< [ ] */
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RE_TOK_START_INV_CHAR_CLASS, /**< [^ ] */
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} re_token_type_t;
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/**
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* @}
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*
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* \addtogroup regexparser_parser Parser
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* @{
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*/
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/**
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* RegExp constant of infinite
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*/
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#define RE_ITERATOR_INFINITE ((uint32_t) - 1)
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/**
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* Maximum number of decimal escape digits
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*/
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#define RE_MAX_RE_DECESC_DIGITS 9
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/**
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* Undefined character (out of the range of the codeunit)
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*/
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#define RE_CHAR_UNDEF 0xFFFFFFFF
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/**
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* RegExp token type
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*/
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typedef struct
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{
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re_token_type_t type; /**< type of the token */
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uint32_t value; /**< value of the token */
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uint32_t qmin; /**< minimum number of token iterations */
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uint32_t qmax; /**< maximum number of token iterations */
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bool greedy; /**< type of iteration */
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} re_token_t;
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/**
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* RegExp parser context
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*/
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typedef struct
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{
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lit_utf8_byte_t *input_start_p; /**< start of input pattern */
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lit_utf8_byte_t *input_curr_p; /**< current position in input pattern */
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lit_utf8_byte_t *input_end_p; /**< end of input pattern */
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int num_of_groups; /**< number of groups */
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uint32_t num_of_classes; /**< number of character classes */
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} re_parser_ctx_t;
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typedef void (*re_char_class_callback) (void *re_ctx_p, uint32_t start, uint32_t end);
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ecma_value_t
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re_parse_char_class (re_parser_ctx_t *, re_char_class_callback, void *, re_token_t *);
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ecma_value_t
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re_parse_next_token (re_parser_ctx_t *, re_token_t *);
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/**
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* @}
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* @}
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* @}
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*/
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#endif /* !CONFIG_ECMA_COMPACT_PROFILE_DISABLE_REGEXP_BUILTIN */
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#endif /* !RE_PARSER_H */
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