103 lines
4.1 KiB
C
103 lines
4.1 KiB
C
/*
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* $Id$
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*
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Copyright (c) 2006-2019 Chung, Hyung-Hwan. All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR
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IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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tre-parse.c - Regexp parser definitions
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This is the license, copyright notice, and disclaimer for TRE, a regex
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matching package (library and tools) with support for approximate
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matching.
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Copyright (c) 2001-2009 Ville Laurikari <vl@iki.fi>
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND CONTRIBUTORS
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``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _QSE_LIB_CMN_TRE_PARSE_H_
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#define _QSE_LIB_CMN_TRE_PARSE_H_
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/* Parse context. */
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typedef struct
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{
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/* Memory allocator. The AST is allocated using this. */
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tre_mem_t mem;
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/* Stack used for keeping track of regexp syntax. */
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tre_stack_t *stack;
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/* The parse result. */
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tre_ast_node_t *result;
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/* The regexp to parse and its length. */
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const tre_char_t *re;
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/* The first character of the entire regexp. */
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const tre_char_t *re_start;
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/* The first character after the end of the regexp. */
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const tre_char_t *re_end;
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int len;
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/* Current submatch ID. */
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int submatch_id;
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/* Current position (number of literal). */
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int position;
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/* The highest back reference or -1 if none seen so far. */
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int max_backref;
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/* This flag is set if the regexp uses approximate matching. */
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int have_approx;
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/* Compilation flags. */
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int cflags;
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/* If this flag is set the top-level submatch is not captured. */
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int nofirstsub;
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/* The currently set approximate matching parameters. */
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int params[TRE_PARAM_LAST];
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} tre_parse_ctx_t;
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/* Parses a wide character regexp pattern into a syntax tree. This parser
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handles both syntaxes (BRE and ERE), including the TRE extensions. */
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reg_errcode_t tre_parse(tre_parse_ctx_t *ctx);
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#endif /* TRE_PARSE_H */
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/* EOF */
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