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/*
* Copyright 2016, Google Inc.
* 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 Google Inc. 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
* OWNER OR 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.
*/
/* description: Parses a path template string and returns an array of
* Segment objects.
*/
/* options */
//option namespace:Google\ApiCore\Jison
/* lexical grammar */
%lex
%%
\s+ /* skip whitespace */
"/" return 'FORWARD_SLASH'
"{" return 'LEFT_BRACE'
"}" return 'RIGHT_BRACE'
"=" return 'EQUALS'
":" return 'COLON'
"**" return 'PATH_WILDCARD'
"*" return 'WILDCARD'
[^*=}{}\/]+ return 'LITERAL'
<<EOF>> /* skip EOF */
/lex
%token 'FORWARD_SLASH'
%token 'LEFT_BRACE'
%token 'RIGHT_BRACE'
%token 'EQUALS'
%token 'COLON'
%token 'LITERAL'
%token 'PATH_WILDCARD'
%token 'WILDCARD'
%% /* language grammar */
/* This file is used by a php port of Jison (https://github.com/zaach/jison). */
template
: FORWARD_SLASH bound_segments
{//php return $2->text;
}
| bound_segments
{//php return $1->text;
}
;
bound_segments
: bound_segment FORWARD_SLASH bound_segments
{/*php
$t1 = $1->text;
$t3 = $3->text;
$$ = array_merge($t1, $t3);
*/}
| bound_segment COLON bound_segments
{/*php
$t1 = $1->text;
$t3 = $3->text;
Segment::decrementSegmentCount();
$t3[0] = new Segment($t3[0]->kind, ':' . $t3[0]->literal);
$$ = array_merge($t1, $t3);
*/}
}
| bound_segment
{//php $$ = $1->text;
}
;
unbound_segments
: unbound_terminal FORWARD_SLASH unbound_segments
{/*php
$t1 = $1->text;
$t3 = $3->text;
$$ = array_merge($t1, $t3);
*/}
| unbound_terminal
{//php $$ = $1->text;
}
;
bound_segment
: bound_terminal
{//php $$ = $1->text;
}
| variable
{//php $$ = $1->text;
}
;
unbound_terminal
: WILDCARD
{/*php
$t1 = $1->text;
Segment::incrementSegmentCount();
$$ = [new Segment(Segment::TERMINAL, $t1)];
*/}
| PATH_WILDCARD
{/*php
$t1 = $1->text;
Segment::incrementSegmentCount();
$$ = [new Segment(Segment::TERMINAL, $t1)];
*/}
| LITERAL
{/*php
$t1 = $1->text;
Segment::incrementSegmentCount();
$$ = [new Segment(Segment::TERMINAL, $t1)];
*/}
;
bound_terminal
: unbound_terminal
{/*php
$t1 = $1->text;
if (in_array($t1[0]['literal'], ['*', '**'])) {
$$ = [
new Segment(Segment::BINDING,
sprintf('$%d', Segment::getBindingCount())),
$t1[0],
new Segment(Segment::END_BINDING, '')
];
Segment::incrementBindingCount();
} else {
$$ = $t1;
}
*/}
;
variable
: LEFT_BRACE LITERAL EQUALS unbound_segments RIGHT_BRACE
{/*php
$t2 = $2->text;
$t4 = $4->text;
$tmp = [new Segment(Segment::BINDING, $t2)];
$tmp = array_merge($tmp, $t4);
array_push($tmp, new Segment(Segment::END_BINDING, ''));
$$ = $tmp;
*/}
| LEFT_BRACE LITERAL RIGHT_BRACE
{/*php
$t2 = $2->text;
$$ = [
new Segment(Segment::BINDING, $t2),
new Segment(Segment::TERMINAL, '*'),
new Segment(Segment::END_BINDING, '')
];
Segment::incrementSegmentCount();
*/}
;