mirror of
https://github.com/jerryscript-project/jerryscript.git
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114 lines
3.4 KiB
C
114 lines
3.4 KiB
C
/* Copyright JS Foundation and other contributors, http://js.foundation
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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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#if ENABLED (JERRY_BUILTIN_REGEXP)
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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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* 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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const lit_utf8_byte_t *input_start_p; /**< start of input pattern */
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const lit_utf8_byte_t *input_curr_p; /**< current position in input pattern */
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const lit_utf8_byte_t *input_end_p; /**< end of input pattern */
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int groups_count; /**< number of groups */
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uint32_t classes_count; /**< number of character classes */
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} re_parser_ctx_t;
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bool re_hex_lookup (re_parser_ctx_t *parser_ctx_p, uint32_t lookup);
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uint32_t re_parse_octal (re_parser_ctx_t *parser_ctx_p);
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ecma_value_t re_parse_iterator (re_parser_ctx_t *parser_ctx_p, re_token_t *re_token_p);
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ecma_value_t re_parse_next_token (re_parser_ctx_t *parser_ctx_p, re_token_t *out_token_p);
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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 /* ENABLED (JERRY_BUILTIN_REGEXP) */
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#endif /* !RE_PARSER_H */
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