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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,199 @@ | ||
| // | ||
| // Hoa | ||
| // | ||
| // | ||
| // @license | ||
| // | ||
| // New BSD License | ||
| // | ||
| // Copyright © 2007-2017, Hoa community. All rights reserved. | ||
| // | ||
| // Redistribution and use in source and binary forms, with or without | ||
| // modification, are permitted provided that the following conditions are met: | ||
| // * Redistributions of source code must retain the above copyright | ||
| // notice, this list of conditions and the following disclaimer. | ||
| // * Redistributions in binary form must reproduce the above copyright | ||
| // notice, this list of conditions and the following disclaimer in the | ||
| // documentation and/or other materials provided with the distribution. | ||
| // * Neither the name of the Hoa nor the names of its contributors may be | ||
| // used to endorse or promote products derived from this software without | ||
| // specific prior written permission. | ||
| // | ||
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | ||
| // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | ||
| // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | ||
| // ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS AND CONTRIBUTORS BE | ||
| // LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | ||
| // CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | ||
| // SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | ||
| // INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | ||
| // CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | ||
| // ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | ||
| // POSSIBILITY OF SUCH DAMAGE. | ||
| // | ||
| // Grammar \Hoa\Regex\Grammar. | ||
| // | ||
| // Provide grammar of PCRE (Perl Compatible Regular Expression)for the LL(k) | ||
| // parser. More informations at http://pcre.org/pcre.txt, sections pcrepattern & | ||
| // pcresyntax. | ||
| // | ||
| // @copyright Copyright © 2007-2017 Hoa community. | ||
| // @license New BSD License | ||
| // | ||
|
|
||
|
|
||
| // Skip. | ||
| %skip nl \n | ||
|
|
||
| // Character classes. | ||
| %token negative_class_ \[\^ | ||
| %token class_ \[ | ||
| %token _class \] | ||
| %token range \- | ||
|
|
||
| // Internal options. | ||
| %token internal_option \(\?[\-+]?[imsx]\) | ||
|
|
||
| // Lookahead and lookbehind assertions. | ||
| %token lookahead_ \(\?= | ||
| %token negative_lookahead_ \(\?! | ||
| %token lookbehind_ \(\?<= | ||
| %token negative_lookbehind_ \(\?<! | ||
|
|
||
| // Conditions. | ||
| %token named_reference_ \(\?\(< -> nc | ||
| %token absolute_reference_ \(\?\((?=\d) -> c | ||
| %token relative_reference_ \(\?\((?=[\+\-]) -> c | ||
| %token c:index [\+\-]?\d+ -> default | ||
| %token assertion_reference_ \(\?\( | ||
|
|
||
| // Comments. | ||
| %token comment_ \(\?# -> co | ||
| %token co:_comment \) -> default | ||
| %token co:comment .*?(?=(?<!\\)\)) | ||
|
|
||
| // Capturing group. | ||
| %token named_capturing_ \(\?P?< -> nc | ||
| %token nc:_named_capturing > -> default | ||
| %token nc:capturing_name .+?(?=(?<!\\)>) | ||
| %token non_capturing_ \(\?: | ||
| %token non_capturing_reset_ \(\?\| | ||
| %token atomic_group_ \(\?> | ||
| %token capturing_ \( | ||
| %token _capturing \) | ||
|
|
||
| // Quantifiers (by default, greedy). | ||
| %token zero_or_one_possessive \?\+ | ||
| %token zero_or_one_lazy \?\? | ||
| %token zero_or_one \? | ||
| %token zero_or_more_possessive \*\+ | ||
| %token zero_or_more_lazy \*\? | ||
| %token zero_or_more \* | ||
| %token one_or_more_possessive \+\+ | ||
| %token one_or_more_lazy \+\? | ||
| %token one_or_more \+ | ||
| %token exactly_n \{[0-9]+\} | ||
| %token n_to_m_possessive \{[0-9]+,[0-9]+\}\+ | ||
| %token n_to_m_lazy \{[0-9]+,[0-9]+\}\? | ||
| %token n_to_m \{[0-9]+,[0-9]+\} | ||
| %token n_or_more_possessive \{[0-9]+,\}\+ | ||
| %token n_or_more_lazy \{[0-9]+,\}\? | ||
| %token n_or_more \{[0-9]+,\} | ||
|
|
||
| // Alternation. | ||
| %token alternation \| | ||
|
|
||
| // Literal. | ||
| %token character \\([aefnrt]|c[\x00-\x7f]) | ||
| %token dynamic_character \\([0-7]{3}|x[0-9a-zA-Z]{2}|x{[0-9a-zA-Z]+}) | ||
| // Please, see PCRESYNTAX(3), General Category properties, PCRE special category | ||
| // properties and script names for \p{} and \P{}. | ||
| %token character_type \\([CdDhHNRsSvVwWX]|[pP]{[^}]+}) | ||
| %token anchor \\([bBAZzG])|\^|\$ | ||
| %token match_point_reset \\K | ||
| %token literal \\.|. | ||
|
|
||
|
|
||
| // Rules. | ||
|
|
||
| #expression: | ||
| alternation() | ||
|
|
||
| alternation: | ||
| concatenation() ( ::alternation:: concatenation() #alternation )* | ||
|
|
||
| concatenation: | ||
| ( internal_options() | assertion() | quantification() | condition() ) | ||
| ( ( internal_options() | assertion() | quantification() | condition() ) #concatenation )* | ||
|
|
||
| #internal_options: | ||
| <internal_option> | ||
|
|
||
| #condition: | ||
| ( | ||
| ::named_reference_:: <capturing_name> ::_named_capturing:: #namedcondition | ||
| | ( | ||
| ::relative_reference_:: #relativecondition | ||
| | ::absolute_reference_:: #absolutecondition | ||
| ) | ||
| <index> | ||
| | ::assertion_reference_:: alternation() #assertioncondition | ||
| ) | ||
| ::_capturing:: concatenation()? | ||
| ( ::alternation:: concatenation()? )? | ||
| ::_capturing:: | ||
|
|
||
| assertion: | ||
| ( | ||
| ::lookahead_:: #lookahead | ||
| | ::negative_lookahead_:: #negativelookahead | ||
| | ::lookbehind_:: #lookbehind | ||
| | ::negative_lookbehind_:: #negativelookbehind | ||
| ) | ||
| alternation() ::_capturing:: | ||
|
|
||
| quantification: | ||
| ( class() | simple() ) ( quantifier() #quantification )? | ||
|
|
||
| quantifier: | ||
| <zero_or_one_possessive> | <zero_or_one_lazy> | <zero_or_one> | ||
| | <zero_or_more_possessive> | <zero_or_more_lazy> | <zero_or_more> | ||
| | <one_or_more_possessive> | <one_or_more_lazy> | <one_or_more> | ||
| | <exactly_n> | ||
| | <n_to_m_possessive> | <n_to_m_lazy> | <n_to_m> | ||
| | <n_or_more_possessive> | <n_or_more_lazy> | <n_or_more> | ||
|
|
||
| #class: | ||
| ( | ||
| ::negative_class_:: #negativeclass | ||
| | ::class_:: | ||
| ) | ||
| ( <class_> | range() | literal() )+ | ||
| ::_class:: | ||
|
|
||
| #range: | ||
| literal() ::range:: literal() | ||
|
|
||
| simple: | ||
| capturing() | ||
| | literal() | ||
|
|
||
| #capturing: | ||
| ::comment_:: <comment>? ::_comment:: #comment | ||
| | ( | ||
| ::named_capturing_:: <capturing_name> ::_named_capturing:: #namedcapturing | ||
| | ::non_capturing_:: #noncapturing | ||
| | ::non_capturing_reset_:: #noncapturingreset | ||
| | ::atomic_group_:: #atomicgroup | ||
| | ::capturing_:: | ||
| ) | ||
| alternation() ::_capturing:: | ||
|
|
||
| literal: | ||
| <character> | ||
| | <range> | ||
| | <dynamic_character> | ||
| | <character_type> | ||
| | <anchor> | ||
| | <match_point_reset> | ||
| | <literal> |
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