Source for file Parser.php
Documentation is available at Parser.php
/* Driver template for the PHP_PHP_LexerGenerator_ParserrGenerator parser generator. (PHP port of LEMON)
* This can be used to store both the string representation of
* a token, and any useful meta-data associated with the token.
* meta-data should be stored as an array
class PHP_LexerGenerator_ParseryyToken implements ArrayAccess
public $metadata = array ();
function __construct ($s, $m = array ())
if ($s instanceof PHP_LexerGenerator_ParseryyToken ) {
$this->string = $s->string;
$this->metadata = $s->metadata;
$this->string = (string) $s;
if ($m instanceof PHP_LexerGenerator_ParseryyToken ) {
$this->metadata = $m->metadata;
function offsetExists ($offset)
return isset ($this->metadata[$offset]);
function offsetGet ($offset)
return $this->metadata[$offset];
function offsetSet ($offset, $value)
$x = ($value instanceof PHP_LexerGenerator_ParseryyToken ) ?
$value->metadata : $value;
$offset = count($this->metadata);
if ($value instanceof PHP_LexerGenerator_ParseryyToken ) {
$this->metadata[$offset] = $value->metadata;
$this->metadata[$offset] = $value;
function offsetUnset ($offset)
unset ($this->metadata[$offset]);
/** The following structure represents a single element of the
* parser's stack. Information stored includes:
* + The state number for the parser at this level of the stack.
* + The value of the token stored at this level of the stack.
* (In other words, the "major" token.)
* + The semantic value stored at this level of the stack. This is
* the information used by the action routines in the grammar.
* It is sometimes called the "minor" token.
class PHP_LexerGenerator_ParseryyStackEntry
public $stateno; /* The state-number */
public $major; /* The major token value. This is the code
** number for the token at this stack level */
public $minor; /* The user-supplied minor token value. This
** is the value of the token */
// code external to the class is included here
* PHP_LexerGenerator, a php 5 lexer generator.
* This lexer generator translates a file in a format similar to
* re2c ({@link http://re2c.org}) and translates it into a PHP 5-based lexer
* Copyright (c) 2006, Gregory Beaver <cellog@php.net>
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* * 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 PHP_LexerGenerator 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.
* @package PHP_LexerGenerator
* @author Gregory Beaver <cellog@php.net>
* @copyright 2006 Gregory Beaver
* @license http://www.opensource.org/licenses/bsd-license.php New BSD License
* @version CVS: $Id: Parser.php 246683 2007-11-22 04:43:52Z instance $
* @since File available since Release 0.1.0
* For regular expression validation
require_once 'PHP/LexerGenerator/Regex/Lexer.php';
require_once 'PHP/LexerGenerator/Regex/Parser.php';
require_once 'PHP/LexerGenerator/Exception.php';
* Token parser for plex files.
* This parser converts tokens pulled from {@link PHP_LexerGenerator_Lexer}
* into abstract patterns and rules, then creates the output file
* @package PHP_LexerGenerator
* @author Gregory Beaver <cellog@php.net>
* @copyright 2006 Gregory Beaver
* @license http://www.php.net/license/3_01.txt PHP License 3.01
* @version @package_version@
* @since Class available since Release 0.1.0
// declare_class is output here
/* First off, code is included which follows the "include_class" declaration
private $_patternIndex = 0;
private $_outRuleIndex = 1;
private $caseinsensitive;
$this->out = fopen($outfile, 'wb');
throw new Exception ('unable to open lexer output file "' . $outfile . '"');
$this->_regexLexer = new PHP_LexerGenerator_Regex_Lexer ('');
$this->_regexParser = new PHP_LexerGenerator_Regex_Parser ($this->_regexLexer);
if (' . $this->counter . ' >= strlen(' . $this->input . ')) {
return false; // end of input
foreach ($rules as $rule) {
\'/\G' . $rule['pattern'] . '/' . $this->patternFlags . ' \',');
foreach ($rules as $index => $rule) {
if (preg_match($rule, substr(' . $this->input . ', ' .
$this->counter . '), $yymatches)) {
if (strlen($yymatches[0]) > strlen($match[0][0])) {
$match = array($yymatches, $index); // matches, token
$match = array($yymatches, $index);
throw new Exception(\'Unexpected input at line \' . ' . $this->line . ' .
\': \' . ' . $this->input . '[' . $this->counter . ']);
' . $this->token . ' = $match[1];
' . $this->value . ' = $match[0][0];
$yysubmatches = $match[0];
array_shift($yysubmatches);
$r = $this->{\'yy_r' . $ruleindex . '_\' . ' . $this->token . '}($yysubmatches);
' . $this->counter . ' += strlen(' . $this->value . ');
' . $this->line . ' += substr_count(' . $this->value . ', "\n");
// process this token in the new state
} elseif ($r === false) {
' . $this->counter . ' += strlen(' . $this->value . ');
' . $this->line . ' += substr_count(' . $this->value . ', "\n");
if (' . $this->counter . ' >= strlen(' . $this->input . ')) {
return false; // end of input
$yy_yymore_patterns = array_slice($rules, $this->token, true);
if (!isset($yy_yymore_patterns[' . $this->token . '])) {
throw new Exception(\'cannot do yymore for the last token\');
foreach ($yy_yymore_patterns[' . $this->token . '] as $index => $rule) {
if (preg_match(\'/\' . $rule . \'/' . $this->patternFlags . '\',
' . $this->input . ', $yymatches, null, ' . $this->counter . ')) {
$yymatches = array_filter($yymatches, \'strlen\'); // remove empty sub-patterns
if (strlen($yymatches[0]) > strlen($match[0][0])) {
$match = array($yymatches, $index); // matches, token
$match = array($yymatches, $index);
throw new Exception(\'Unexpected input at line \' . ' . $this->line . ' .
\': \' . ' . $this->input . '[' . $this->counter . ']);
' . $this->token . ' = $match[1];
' . $this->value . ' = $match[0][0];
$yysubmatches = $match[0];
array_shift($yysubmatches);
' . $this->line . ' = substr_count(' . $this->value . ', "\n");
$r = $this->{\'yy_r' . $ruleindex . '_\' . ' . $this->token . '}();
} while ($r !== null || !$r);
// process this token in the new state
' . $this->counter . ' += strlen(' . $this->value . ');
' . $this->line . ' += substr_count(' . $this->value . ', "\n");
foreach ($rules as $rule) {
$ruleMap[$i++ ] = $actualindex;
$tokenindex[$actualindex] = $rule['subpatterns'];
$actualindex += $rule['subpatterns'] + 1;
$patterns[] = '\G(' . $rule['pattern'] . ')';
// Re-index tokencount from zero.
$tokenindex = explode("\n", $tokenindex);
$tokenindex = implode("\n ", $tokenindex);
$pattern .= implode('|', $patterns);
$pattern .= '/' . $this->patternFlags;
$tokenMap = ' . $tokenindex . ';
if (' . $this->counter . ' >= strlen(' . $this->input . ')) {
return false; // end of input
fwrite($this->out, '$yy_global_pattern = \'' .
$pattern . '\';' . "\n");
if (preg_match($yy_global_pattern,' . $this->input . ', $yymatches, null, ' .
$yysubmatches = $yymatches;
$yymatches = array_filter($yymatches, \'strlen\'); // remove empty sub-patterns
if (!count($yymatches)) {
throw new Exception(\'Error: lexing failed because a rule matched\' .
\' an empty string. Input "\' . substr(' . $this->input . ',
' . $this->counter . ', 5) . \'... state ' . $statename . '\');
next($yymatches); // skip global match
' . $this->token . ' = key($yymatches); // token number
if ($tokenMap[' . $this->token . ']) {
// extract sub-patterns for passing to lex function
$yysubmatches = array_slice($yysubmatches, ' . $this->token . ' + 1,
$tokenMap[' . $this->token . ']);
' . $this->value . ' = current($yymatches); // token value
$r = $this->{\'yy_r' . $ruleindex . '_\' . ' . $this->token . '}($yysubmatches);
' . $this->counter . ' += strlen(' . $this->value . ');
' . $this->line . ' += substr_count(' . $this->value . ', "\n");
// process this token in the new state
} elseif ($r === false) {
' . $this->counter . ' += strlen(' . $this->value . ');
' . $this->line . ' += substr_count(' . $this->value . ', "\n");
if (' . $this->counter . ' >= strlen(' . $this->input . ')) {
return false; // end of input
$yy_yymore_patterns = array(' . "\n");
for($i = 0; count($patterns); $i++ ) {
$extra += $tokencount[0 ];
fwrite($this->out, ' ' . $ruleMap[$i] . ' => array(' . $extra . ', "' .
implode('|', $patterns) . "\"),\n");
fwrite($this->out, ' );' . "\n");
if (!strlen($yy_yymore_patterns[' . $this->token . '][1])) {
throw new Exception(\'cannot do yymore for the last token\');
if (preg_match(\'/\' . $yy_yymore_patterns[' . $this->token . '][1] . \'/' . $this->patternFlags . '\',
' . $this->input . ', $yymatches, null, ' . $this->counter . ')) {
$yysubmatches = $yymatches;
$yymatches = array_filter($yymatches, \'strlen\'); // remove empty sub-patterns
next($yymatches); // skip global match
' . $this->token . ' += key($yymatches) + $yy_yymore_patterns[' . $this->token . '][0]; // token number
' . $this->value . ' = current($yymatches); // token value
' . $this->line . ' = substr_count(' . $this->value . ', "\n");
if ($tokenMap[' . $this->token . ']) {
// extract sub-patterns for passing to lex function
$yysubmatches = array_slice($yysubmatches, ' . $this->token . ' + 1,
$tokenMap[' . $this->token . ']);
$r = $this->{\'yy_r' . $ruleindex . '_\' . ' . $this->token . '}($yysubmatches);
} while ($r !== null && !is_bool($r));
// process this token in the new state
} elseif ($r === false) {
' . $this->counter . ' += strlen(' . $this->value . ');
' . $this->line . ' += substr_count(' . $this->value . ', "\n");
if (' . $this->counter . ' >= strlen(' . $this->input . ')) {
return false; // end of input
' . $this->counter . ' += strlen(' . $this->value . ');
' . $this->line . ' += substr_count(' . $this->value . ', "\n");
throw new Exception(\'Unexpected input at line\' . ' . $this->line . ' .
\': \' . ' . $this->input . '[' . $this->counter . ']);
$statename = $this -> _outRuleIndex;
function yylex' . $this -> _outRuleIndex . '()
if ($this->matchlongest) {
foreach ($rules as $i => $rule) {
foreach ($rules as $rule) {
$ruleMap[$i++ ] = $actualindex;
$actualindex += $rule['subpatterns'] + 1;
$this->doFirstMatch($rules, $statename, $this -> _outRuleIndex);
const ' . $statename . ' = ' . $this -> _outRuleIndex . ';
foreach ($rules as $i => $rule) {
fwrite($this->out, ' function yy_r' . $this -> _outRuleIndex . '_' . $ruleMap[$i] . '($yy_subpatterns)
$this -> _outRuleIndex++; // for next set of rules
echo 'Error on line ' . $this->lex->line . ': ' , $msg;
function _validatePattern ($pattern, $update = false )
$this->_regexLexer->reset ($pattern, $this->lex->line );
$this->_regexParser->reset ($this->_patternIndex, $update);
while ($this->_regexLexer->yylex ()) {
$this->_regexParser->doParse (
$this->_regexLexer->token , $this->_regexLexer->value );
$this->_regexParser->doParse (0 , 0 );
$this->error($e->getMessage ());
return $this->_regexParser->result;
/* Next is all token values, as class constants
** These constants (all generated automatically by the parser generator)
** specify the various kinds of tokens (terminals) that the parser
** Each symbol here is a terminal symbol in the grammar.
const YY_ACCEPT_ACTION = 98;
const YY_ERROR_ACTION = 97;
/* Next are that tables used to determine what action to take based on the
** current state and lookahead token. These tables are used to implement
** functions that take a state number and lookahead value and return an
** Suppose the action integer is N. Then the action is determined as
** 0 <= N < self::YYNSTATE Shift N. That is,
** self::YYNSTATE <= N < self::YYNSTATE+self::YYNRULE Reduce by rule N-YYNSTATE.
** N == self::YYNSTATE+self::YYNRULE A syntax error has occurred.
** N == self::YYNSTATE+self::YYNRULE+1 The parser accepts its
** input. (and concludes parsing)
** N == self::YYNSTATE+self::YYNRULE+2 No such action. Denotes unused
** slots in the yy_action[] table.
** The action table is constructed as a single large static array $yy_action.
** Given state S and lookahead X, the action is computed as
** self::$yy_action[self::$yy_shift_ofst[S] + X ]
** If the index value self::$yy_shift_ofst[S]+X is out of range or if the value
** self::$yy_lookahead[self::$yy_shift_ofst[S]+X] is not equal to X or if
** self::$yy_shift_ofst[S] is equal to self::YY_SHIFT_USE_DFLT, it means that
** the action is not in the table and that self::$yy_default[S] should be used instead.
** The formula above is for computing the action when the lookahead is
** a terminal symbol. If the lookahead is a non-terminal (as occurs after
** a reduce action) then the static $yy_reduce_ofst array is used in place of
** the static $yy_shift_ofst array and self::YY_REDUCE_USE_DFLT is used in place of
** self::YY_SHIFT_USE_DFLT.
** The following are the tables generated in this section:
** self::$yy_action A single table containing all actions.
** self::$yy_lookahead A table containing the lookahead for each entry in
** yy_action. Used to detect hash collisions.
** self::$yy_shift_ofst For each state, the offset into self::$yy_action for
** self::$yy_reduce_ofst For each state, the offset into self::$yy_action for
** shifting non-terminals after a reduce.
** self::$yy_default Default action for each state.
/* 0 */ 25 , 50 , 49 , 31 , 49 , 54 , 53 , 54 , 53 , 35 ,
/* 10 */ 11 , 49 , 18 , 22 , 54 , 53 , 14 , 59 , 51 , 28 ,
/* 20 */ 55 , 57 , 58 , 59 , 47 , 1 , 55 , 57 , 32 , 15 ,
/* 30 */ 49 , 29 , 49 , 54 , 53 , 54 , 53 , 30 , 52 , 49 ,
/* 40 */ 42 , 46 , 54 , 53 , 98 , 56 , 5 , 13 , 38 , 18 ,
/* 50 */ 49 , 43 , 40 , 54 , 53 , 12 , 39 , 18 , 3 , 37 ,
/* 60 */ 36 , 17 , 7 , 8 , 2 , 10 , 33 , 18 , 9 , 2 ,
/* 70 */ 41 , 44 , 1 , 24 , 16 , 34 , 45 , 27 , 60 , 48 ,
/* 80 */ 4 , 1 , 2 , 1 , 20 , 19 , 21 , 26 , 23 , 6 ,
/* 0 */ 3 , 1 , 5 , 4 , 5 , 8 , 9 , 8 , 9 , 3 ,
/* 10 */ 19 , 5 , 21 , 4 , 8 , 9 , 7 , 5 , 6 , 14 ,
/* 20 */ 8 , 9 , 3 , 5 , 6 , 20 , 8 , 9 , 3 , 7 ,
/* 30 */ 5 , 4 , 5 , 8 , 9 , 8 , 9 , 3 , 1 , 5 ,
/* 40 */ 5 , 6 , 8 , 9 , 11 , 12 , 13 , 19 , 5 , 21 ,
/* 50 */ 5 , 8 , 9 , 8 , 9 , 19 , 5 , 21 , 5 , 8 ,
/* 60 */ 9 , 1 , 2 , 1 , 2 , 19 , 14 , 21 , 1 , 2 ,
/* 70 */ 5 , 6 , 20 , 15 , 16 , 14 , 2 , 14 , 1 , 1 ,
/* 80 */ 5 , 20 , 2 , 20 , 18 , 21 , 18 , 17 , 4 , 13 ,
const YY_SHIFT_USE_DFLT = -4;
/* 0 */ 60 , 27 , -1 , 45 , 45 , 62 , 67 , 84 , 80 , 80 ,
/* 10 */ 34 , 25 , -3 , 6 , 51 , 51 , 9 , 88 , 12 , 18 ,
/* 20 */ 43 , 43 , 65 , 35 , 19 , 0 , 22 , 74 , 74 , 75 ,
/* 30 */ 78 , 53 , 77 , 74 , 74 , 37 ,
const YY_REDUCE_USE_DFLT = -10;
const YY_REDUCE_MAX = 17;
/* 0 */ 33 , 28 , -9 , 46 , 36 , 52 , 63 , 58 , 61 , 5 ,
/* 10 */ 64 , 64 , 64 , 64 , 66 , 68 , 70 , 76 ,
/* 1 */ array (4 , 5 , 8 , 9 , ),
/* 2 */ array (4 , 5 , 8 , 9 , ),
/* 3 */ array (5 , 8 , 9 , ),
/* 4 */ array (5 , 8 , 9 , ),
/* 10 */ array (3 , 5 , 8 , 9 , ),
/* 11 */ array (3 , 5 , 8 , 9 , ),
/* 12 */ array (3 , 5 , 8 , 9 , ),
/* 13 */ array (3 , 5 , 8 , 9 , ),
/* 14 */ array (5 , 8 , 9 , ),
/* 15 */ array (5 , 8 , 9 , ),
/* 18 */ array (5 , 6 , 8 , 9 , ),
/* 19 */ array (5 , 6 , 8 , 9 , ),
/* 20 */ array (5 , 8 , 9 , ),
/* 21 */ array (5 , 8 , 9 , ),
/* 0 */ 97 , 97 , 97 , 97 , 97 , 97 , 97 , 97 , 97 , 97 ,
/* 10 */ 97 , 97 , 97 , 97 , 97 , 97 , 97 , 97 , 97 , 97 ,
/* 20 */ 72 , 73 , 97 , 97 , 97 , 79 , 67 , 64 , 65 , 97 ,
/* 30 */ 75 , 97 , 74 , 62 , 63 , 78 , 92 , 91 , 96 , 93 ,
/* 40 */ 95 , 70 , 68 , 94 , 71 , 82 , 69 , 84 , 77 , 87 ,
/* 50 */ 81 , 83 , 80 , 86 , 85 , 88 , 61 , 89 , 66 , 90 ,
/* The next thing included is series of defines which control
** various aspects of the generated parser.
** self::YYNOCODE is a number which corresponds
** to no legal terminal or nonterminal number. This
** number is used to fill in empty slots of the hash
** self::YYFALLBACK If defined, this indicates that one or more tokens
** have fall-back values which should be used if the
** original value of the token will not parse.
** self::YYSTACKDEPTH is the maximum depth of the parser's stack.
** self::YYNSTATE the combined number of states.
** self::YYNRULE the number of rules in the grammar
** self::YYERRORSYMBOL is the code number of the error symbol. If not
** defined, then do no error processing.
const YYSTACKDEPTH = 100;
const YYERRORSYMBOL = 10;
const YYERRSYMDT = 'yy0';
/** The next table maps tokens into fallback tokens. If a construct
* appears in the grammer, then ID becomes a fallback token for X, Y,
* and Z. Whenever one of the tokens X, Y, or Z is input to the parser
* but it does not parse, the type of the token is changed to ID and
* the parse is retried before an error is thrown.
* Turn parser tracing on by giving a stream to which to write the trace
* and a prompt to preface each trace message. Tracing is turned off
* by making either argument NULL
* - A stream resource to which trace output should be written.
* If NULL, then tracing is turned off.
* - A prefix string written at the beginning of every
* line of trace output. If NULL, then tracing is
static function Trace($TraceFILE, $zTracePrompt)
} elseif (!$zTracePrompt) {
self ::$yyTraceFILE = $TraceFILE;
self ::$yyTracePrompt = $zTracePrompt;
* Output debug information to output (php://output stream)
self ::$yyTraceFILE = fopen ('php://output', 'w');
self ::$yyTracePrompt = '';
* String to prepend to debug output
public $yyidx; /* Index of top element in stack */
public $yyerrcnt; /* Shifts left before out of the error */
public $yystack = array (); /* The parser's stack */
* For tracing shifts, the names of all terminals and nonterminals
* are required. The following table supplies these names
'$', 'PHPCODE', 'COMMENTSTART', 'COMMENTEND',
'PI', 'SUBPATTERN', 'CODE', 'PATTERN',
'QUOTE', 'SINGLEQUOTE', 'error', 'start',
'lexfile', 'declare', 'rules', 'declarations',
'processing_instructions', 'pattern_declarations', 'subpattern', 'rule',
'reset_rules', 'rule_subpattern',
* For tracing reduce actions, the names of all rules are required.
/* 0 */ "start ::= lexfile",
/* 1 */ "lexfile ::= declare rules",
/* 2 */ "lexfile ::= declare PHPCODE rules",
/* 3 */ "lexfile ::= PHPCODE declare rules",
/* 4 */ "lexfile ::= PHPCODE declare PHPCODE rules",
/* 5 */ "declare ::= COMMENTSTART declarations COMMENTEND",
/* 6 */ "declarations ::= processing_instructions pattern_declarations",
/* 7 */ "processing_instructions ::= PI SUBPATTERN",
/* 8 */ "processing_instructions ::= PI CODE",
/* 9 */ "processing_instructions ::= processing_instructions PI SUBPATTERN",
/* 10 */ "processing_instructions ::= processing_instructions PI CODE",
/* 11 */ "pattern_declarations ::= PATTERN subpattern",
/* 12 */ "pattern_declarations ::= pattern_declarations PATTERN subpattern",
/* 13 */ "rules ::= COMMENTSTART rule COMMENTEND",
/* 14 */ "rules ::= COMMENTSTART PI SUBPATTERN rule COMMENTEND",
/* 15 */ "rules ::= COMMENTSTART rule COMMENTEND PHPCODE",
/* 16 */ "rules ::= COMMENTSTART PI SUBPATTERN rule COMMENTEND PHPCODE",
/* 17 */ "rules ::= reset_rules rule COMMENTEND",
/* 18 */ "rules ::= reset_rules PI SUBPATTERN rule COMMENTEND",
/* 19 */ "rules ::= reset_rules rule COMMENTEND PHPCODE",
/* 20 */ "rules ::= reset_rules PI SUBPATTERN rule COMMENTEND PHPCODE",
/* 21 */ "reset_rules ::= rules COMMENTSTART",
/* 22 */ "rule ::= rule_subpattern CODE",
/* 23 */ "rule ::= rule rule_subpattern CODE",
/* 24 */ "rule_subpattern ::= QUOTE",
/* 25 */ "rule_subpattern ::= SINGLEQUOTE",
/* 26 */ "rule_subpattern ::= SUBPATTERN",
/* 27 */ "rule_subpattern ::= rule_subpattern QUOTE",
/* 28 */ "rule_subpattern ::= rule_subpattern SINGLEQUOTE",
/* 29 */ "rule_subpattern ::= rule_subpattern SUBPATTERN",
/* 30 */ "subpattern ::= QUOTE",
/* 31 */ "subpattern ::= SINGLEQUOTE",
/* 32 */ "subpattern ::= SUBPATTERN",
/* 33 */ "subpattern ::= subpattern QUOTE",
/* 34 */ "subpattern ::= subpattern SINGLEQUOTE",
/* 35 */ "subpattern ::= subpattern SUBPATTERN",
* This function returns the symbolic name associated with a token
if ($tokenType > 0 && $tokenType < count (self ::$yyTokenName)) {
return self ::$yyTokenName[$tokenType];
* The following function deletes the value associated with a
* symbol. The symbol can be either a terminal or nonterminal.
* @param int the symbol code
* @param mixed the symbol's value
/* Here is inserted the actions which take place when a
** terminal or non-terminal is destroyed. This can happen
** when the symbol is popped from the stack during a
** reduce or during error processing or when a parser is
** being destroyed before it is finished parsing.
** Note: during a reduce, the only symbols destroyed are those
** which appear on the RHS of the rule, but which are not used
default: break; /* If no destructor action specified: do nothing */
* Pop the parser's stack once.
* If there is a destructor routine associated with the token which
* is popped from the stack, then call it.
* Return the major token number for the symbol popped.
* @param PHP_LexerGenerator_ParseryyParser
if (self ::$yyTraceFILE && $this->yyidx >= 0 ) {
fwrite (self ::$yyTraceFILE,
self ::$yyTracePrompt . 'Popping ' . self ::$yyTokenName[$yytos->major ] .
$yymajor = $yytos->major;
self ::yy_destructor ($yymajor, $yytos->minor );
* Deallocate and destroy a parser. Destructors are all called for
* all stack elements before shutting the parser down.
while ($this->yyidx >= 0 ) {
fclose (self ::$yyTraceFILE);
* Based on the current state and parser stack, get a list of all
* possible lookahead tokens
$expected = self ::$yyExpectedTokens[$state];
if (in_array ($token, self ::$yyExpectedTokens[$state], true )) {
if ($yyact >= self ::YYNSTATE && $yyact < self ::YYNSTATE + self ::YYNRULE ) {
// too much recursion prevents proper detection
$yyruleno = $yyact - self ::YYNSTATE;
$this->yyidx -= self ::$yyRuleInfo[$yyruleno]['rhs'];
self ::$yyRuleInfo[$yyruleno]['lhs']);
if (isset (self ::$yyExpectedTokens[$nextstate])) {
$expected += self ::$yyExpectedTokens[$nextstate];
self ::$yyExpectedTokens[$nextstate], true )) {
if ($nextstate < self ::YYNSTATE ) {
// we need to shift a non-terminal
$x = new PHP_LexerGenerator_ParseryyStackEntry;
$x->stateno = $nextstate;
$x->major = self ::$yyRuleInfo[$yyruleno]['lhs'];
} elseif ($nextstate == self ::YYNSTATE + self ::YYNRULE + 1 ) {
// the last token was just ignored, we can't accept
// by ignoring input, this is in essence ignoring a
} elseif ($nextstate === self ::YY_NO_ACTION ) {
// input accepted, but not shifted (I guess)
* Based on the parser state and current parser stack, determine whether
* the lookahead token is possible.
* The parser will convert the token value to an error token if not. This
* catches some unusual edge cases where the parser would fail.
return true; // 0 is not part of this
if (in_array($token, self ::$yyExpectedTokens[$state], true )) {
if ($yyact >= self ::YYNSTATE && $yyact < self ::YYNSTATE + self ::YYNRULE ) {
// too much recursion prevents proper detection
$yyruleno = $yyact - self ::YYNSTATE;
$this->yyidx -= self ::$yyRuleInfo[$yyruleno]['rhs'];
self ::$yyRuleInfo[$yyruleno]['lhs']);
if (isset (self ::$yyExpectedTokens[$nextstate]) &&
in_array ($token, self ::$yyExpectedTokens[$nextstate], true )) {
if ($nextstate < self ::YYNSTATE ) {
// we need to shift a non-terminal
$x = new PHP_LexerGenerator_ParseryyStackEntry;
$x->stateno = $nextstate;
$x->major = self ::$yyRuleInfo[$yyruleno]['lhs'];
} elseif ($nextstate == self ::YYNSTATE + self ::YYNRULE + 1 ) {
// end of input: this is valid
// the last token was just ignored, we can't accept
// by ignoring input, this is in essence ignoring a
} elseif ($nextstate === self ::YY_NO_ACTION ) {
// input accepted, but not shifted (I guess)
* Find the appropriate action for a parser given the terminal
* look-ahead token iLookAhead.
* If the look-ahead token is YYNOCODE, then check to see if the action is
* independent of the look-ahead. If it is, return the action, otherwise
* @param int The look-ahead token
/* if ($this->yyidx < 0) return self::YY_NO_ACTION; */
if (!isset (self ::$yy_shift_ofst[$stateno])) {
return self ::$yy_default[$stateno];
$i = self ::$yy_shift_ofst[$stateno];
if ($i === self ::YY_SHIFT_USE_DFLT ) {
return self ::$yy_default[$stateno];
if ($iLookAhead == self ::YYNOCODE ) {
return self ::YY_NO_ACTION;
if ($i < 0 || $i >= self ::YY_SZ_ACTTAB ||
self ::$yy_lookahead[$i] != $iLookAhead) {
if (count (self ::$yyFallback) && $iLookAhead < count (self ::$yyFallback)
&& ($iFallback = self ::$yyFallback[$iLookAhead]) != 0 ) {
if (self ::$yyTraceFILE) {
fwrite (self ::$yyTraceFILE, self ::$yyTracePrompt . "FALLBACK " .
self ::$yyTokenName[$iLookAhead] . " => " .
self ::$yyTokenName[$iFallback] . "\n");
return self ::$yy_default[$stateno];
return self ::$yy_action[$i];
* Find the appropriate action for a parser given the non-terminal
* look-ahead token $iLookAhead.
* If the look-ahead token is self::YYNOCODE, then check to see if the action is
* independent of the look-ahead. If it is, return the action, otherwise
* return self::YY_NO_ACTION.
* @param int Current state number
* @param int The look-ahead token
/* $stateno = $this->yystack[$this->yyidx]->stateno; */
if (!isset (self ::$yy_reduce_ofst[$stateno])) {
return self ::$yy_default[$stateno];
$i = self ::$yy_reduce_ofst[$stateno];
if ($i == self ::YY_REDUCE_USE_DFLT ) {
return self ::$yy_default[$stateno];
if ($iLookAhead == self ::YYNOCODE ) {
return self ::YY_NO_ACTION;
if ($i < 0 || $i >= self ::YY_SZ_ACTTAB ||
self ::$yy_lookahead[$i] != $iLookAhead) {
return self ::$yy_default[$stateno];
return self ::$yy_action[$i];
* Perform a shift action.
* @param int The new state to shift in
* @param int The major token to shift in
* @param mixed the minor token to shift in
function yy_shift($yyNewState, $yyMajor, $yypMinor)
if ($this->yyidx >= self ::YYSTACKDEPTH ) {
if (self ::$yyTraceFILE) {
fprintf (self ::$yyTraceFILE, "%sStack Overflow!\n", self ::$yyTracePrompt);
while ($this->yyidx >= 0 ) {
/* Here code is inserted which will execute if the parser
** stack ever overflows */
$yytos = new PHP_LexerGenerator_ParseryyStackEntry;
$yytos->stateno = $yyNewState;
$yytos->major = $yyMajor;
$yytos->minor = $yypMinor;
if (self ::$yyTraceFILE && $this->yyidx > 0 ) {
fprintf (self ::$yyTraceFILE, "%sShift %d\n", self ::$yyTracePrompt,
fprintf (self ::$yyTraceFILE, "%sStack:", self ::$yyTracePrompt);
for($i = 1; $i <= $this->yyidx; $i++ ) {
fprintf (self ::$yyTraceFILE, " %s",
self ::$yyTokenName[$this->yystack[$i]->major ]);
fwrite (self ::$yyTraceFILE,"\n");
* The following table contains information about every rule that
* is used during the reduce.
* int $lhs; Symbol on the left-hand side of the rule
* int $nrhs; Number of right-hand side symbols in the rule
array ( 'lhs' => 11 , 'rhs' => 1 ),
array ( 'lhs' => 12 , 'rhs' => 2 ),
array ( 'lhs' => 12 , 'rhs' => 3 ),
array ( 'lhs' => 12 , 'rhs' => 3 ),
array ( 'lhs' => 12 , 'rhs' => 4 ),
array ( 'lhs' => 13 , 'rhs' => 3 ),
array ( 'lhs' => 15 , 'rhs' => 2 ),
array ( 'lhs' => 16 , 'rhs' => 2 ),
array ( 'lhs' => 16 , 'rhs' => 2 ),
array ( 'lhs' => 16 , 'rhs' => 3 ),
array ( 'lhs' => 16 , 'rhs' => 3 ),
array ( 'lhs' => 17 , 'rhs' => 2 ),
array ( 'lhs' => 17 , 'rhs' => 3 ),
array ( 'lhs' => 14 , 'rhs' => 3 ),
array ( 'lhs' => 14 , 'rhs' => 5 ),
array ( 'lhs' => 14 , 'rhs' => 4 ),
array ( 'lhs' => 14 , 'rhs' => 6 ),
array ( 'lhs' => 14 , 'rhs' => 3 ),
array ( 'lhs' => 14 , 'rhs' => 5 ),
array ( 'lhs' => 14 , 'rhs' => 4 ),
array ( 'lhs' => 14 , 'rhs' => 6 ),
array ( 'lhs' => 20 , 'rhs' => 2 ),
array ( 'lhs' => 19 , 'rhs' => 2 ),
array ( 'lhs' => 19 , 'rhs' => 3 ),
array ( 'lhs' => 21 , 'rhs' => 1 ),
array ( 'lhs' => 21 , 'rhs' => 1 ),
array ( 'lhs' => 21 , 'rhs' => 1 ),
array ( 'lhs' => 21 , 'rhs' => 2 ),
array ( 'lhs' => 21 , 'rhs' => 2 ),
array ( 'lhs' => 21 , 'rhs' => 2 ),
array ( 'lhs' => 18 , 'rhs' => 1 ),
array ( 'lhs' => 18 , 'rhs' => 1 ),
array ( 'lhs' => 18 , 'rhs' => 1 ),
array ( 'lhs' => 18 , 'rhs' => 2 ),
array ( 'lhs' => 18 , 'rhs' => 2 ),
array ( 'lhs' => 18 , 'rhs' => 2 ),
* The following table contains a mapping of reduce action to method name
* that handles the reduction.
* If a rule is not set, it has no handler.
/* Beginning here are the reduction cases. A typical example
** #line <lineno> <grammarfile>
** function yy_r0($yymsp){ ... } // User supplied code
** #line <lineno> <thisfile>
private $_yy_stack = array();
return $this->{\'yylex\' . $this->_yy_state}();
function yypushstate($state)
array_push($this->_yy_stack, $this->_yy_state);
$this->_yy_state = $state;
$this->_yy_state = array_pop($this->_yy_stack);
$this->_yy_state = $state;
foreach ($this->yystack[$this->yyidx + 0 ]->minor as $rule) {
$this->outputRules($rule['rules'], $rule['statename']);
fwrite($this->out, $rule['code']);
private $_yy_stack = array();
return $this->{\'yylex\' . $this->_yy_state}();
function yypushstate($state)
array_push($this->_yy_stack, $this->_yy_state);
$this->_yy_state = $state;
$this->_yy_state = array_pop($this->_yy_stack);
$this->_yy_state = $state;
foreach ($this->yystack[$this->yyidx + 0 ]->minor as $rule) {
$this->outputRules($rule['rules'], $rule['statename']);
fwrite($this->out, $rule['code']);
private $_yy_stack = array();
return $this->{\'yylex\' . $this->_yy_state}();
function yypushstate($state)
array_push($this->_yy_stack, $this->_yy_state);
$this->_yy_state = $state;
$this->_yy_state = array_pop($this->_yy_stack);
$this->_yy_state = $state;
foreach ($this->yystack[$this->yyidx + 0 ]->minor as $rule) {
$this->outputRules($rule['rules'], $rule['statename']);
fwrite($this->out, $rule['code']);
private $_yy_stack = array();
return $this->{\'yylex\' . $this->_yy_state}();
function yypushstate($state)
array_push($this->_yy_stack, $this->_yy_state);
$this->_yy_state = $state;
$this->_yy_state = array_pop($this->_yy_stack);
$this->_yy_state = $state;
foreach ($this->yystack[$this->yyidx + 0 ]->minor as $rule) {
$this->outputRules($rule['rules'], $rule['statename']);
fwrite($this->out, $rule['code']);
$this->_retvalue = $this->yystack[$this->yyidx + -1 ]->minor;
$this->patterns = $this->yystack[$this->yyidx + -1 ]->minor ['patterns'];
$this->_patternIndex = 1;
if (isset ($expected[$pi['pi']])) {
unset ($expected[$pi['pi']]);
throw new Exception ('Processing Instructions "' .
'caseinsensitive' => true ,
if (isset ($expected[$pi['pi']])) {
$this->{$pi['pi']} = $pi['definition'];
if ($pi['pi'] == 'matchlongest') {
$this->matchlongest = true;
$this->error('Unknown processing instruction %' . $pi['pi'] .
$this->patternFlags = ($this->caseinsensitive ? 'i' : '')
. ($this->unicode ? 'u' : '');
$this->_retvalue = array ('patterns' => $this->yystack [$this->yyidx + 0 ]->minor , 'pis' => $this->yystack [$this->yyidx + -1 ]->minor );
$this->_patternIndex = 1;
$this->_retvalue = array (array ('pi' => $this->yystack[$this->yyidx + -1 ]->minor , 'definition' => $this->yystack[$this->yyidx + 0 ]->minor ));
$this->_retvalue = $this->yystack[$this->yyidx + -2 ]->minor;
$this->_retvalue [] = array ('pi' => $this->yystack[$this->yyidx + -1 ]->minor , 'definition' => $this->yystack[$this->yyidx + 0 ]->minor );
// reset internal indicator of where we are in a pattern
$this->_patternIndex = 0;
$this->_retvalue = $this->yystack[$this->yyidx + -2 ]->minor;
if (isset ($this->_retvalue [$this->yystack[$this->yyidx + -1 ]->minor ])) {
throw new Exception ('Pattern "' . $this->yystack[$this->yyidx + -1 ]->minor . '" is already defined as "' .
$this->_retvalue [$this->yystack[$this->yyidx + -1 ]->minor ] . '", cannot redefine as "' . $this->yystack[$this->yyidx + 0 ]->minor ->string . '"');
// reset internal indicator of where we are in a pattern declaration
$this->_patternIndex = 0;
$this->_retvalue = array (array ('rules' => $this->yystack[$this->yyidx + -1 ]->minor , 'code' => '', 'statename' => ''));
if ($this->yystack[$this->yyidx + -3 ]->minor != 'statename') {
throw new Exception ('Error: only %statename processing instruction ' .
'is allowed in rule sections (found ' . $this->yystack[$this->yyidx + -3 ]->minor . ').');
$this->_retvalue = array (array ('rules' => $this->yystack[$this->yyidx + -1 ]->minor , 'code' => '', 'statename' => $this->yystack[$this->yyidx + -2 ]->minor ));
$this->_retvalue = array (array ('rules' => $this->yystack[$this->yyidx + -2 ]->minor , 'code' => $this->yystack[$this->yyidx + 0 ]->minor , 'statename' => ''));
if ($this->yystack[$this->yyidx + -4 ]->minor != 'statename') {
throw new Exception ('Error: only %statename processing instruction ' .
'is allowed in rule sections (found ' . $this->yystack[$this->yyidx + -4 ]->minor . ').');
$this->_retvalue = array (array ('rules' => $this->yystack[$this->yyidx + -2 ]->minor , 'code' => $this->yystack[$this->yyidx + 0 ]->minor , 'statename' => $this->yystack[$this->yyidx + -3 ]->minor ));
$this->_patternIndex = 1;
$this->_retvalue = $this->yystack[$this->yyidx + -2 ]->minor;
$this->_retvalue [] = array ('rules' => $this->yystack[$this->yyidx + -1 ]->minor , 'code' => '', 'statename' => '');
$this->_patternIndex = 1;
if ($this->yystack[$this->yyidx + -3 ]->minor != 'statename') {
throw new Exception ('Error: only %statename processing instruction ' .
'is allowed in rule sections (found ' . $this->yystack[$this->yyidx + -3 ]->minor . ').');
$this->_retvalue = $this->yystack[$this->yyidx + -4 ]->minor;
$this->_retvalue [] = array ('rules' => $this->yystack[$this->yyidx + -1 ]->minor , 'code' => '', 'statename' => $this->yystack[$this->yyidx + -2 ]->minor );
$this->_retvalue = $this->yystack[$this->yyidx + -3 ]->minor;
$this->_retvalue [] = array ('rules' => $this->yystack[$this->yyidx + -2 ]->minor , 'code' => $this->yystack[$this->yyidx + 0 ]->minor , 'statename' => '');
if ($this->yystack[$this->yyidx + -4 ]->minor != 'statename') {
throw new Exception ('Error: only %statename processing instruction ' .
'is allowed in rule sections (found ' . $this->yystack[$this->yyidx + -4 ]->minor . ').');
$this->_retvalue = $this->yystack[$this->yyidx + -5 ]->minor;
$this->_retvalue [] = array ('rules' => $this->yystack[$this->yyidx + -2 ]->minor , 'code' => $this->yystack[$this->yyidx + 0 ]->minor , 'statename' => $this->yystack[$this->yyidx + -3 ]->minor );
$this->_retvalue = $this->yystack[$this->yyidx + -1 ]->minor;
$this->_patternIndex = 1;
$this->_patternIndex += $this->yystack[$this->yyidx + -1 ]->minor ['subpatterns'] + 1;
$this->error('Rule "' . $name . '" can match the empty string, this will break lexing');
$this->_retvalue = array (array ('pattern' => str_replace('/', '\\/', $this->yystack[$this->yyidx + -1 ]->minor ->string ), 'code' => $this->yystack[$this->yyidx + 0 ]->minor , 'subpatterns' => $this->yystack[$this->yyidx + -1 ]->minor ['subpatterns']));
$this->_retvalue = $this->yystack[$this->yyidx + -2 ]->minor;
$this->_patternIndex += $this->yystack[$this->yyidx + -1 ]->minor ['subpatterns'] + 1;
$this->error('Rule "' . $name . '" can match the empty string, this will break lexing');
$this->_retvalue [] = array ('pattern' => str_replace('/', '\\/', $this->yystack[$this->yyidx + -1 ]->minor ->string ), 'code' => $this->yystack[$this->yyidx + 0 ]->minor , 'subpatterns' => $this->yystack[$this->yyidx + -1 ]->minor ['subpatterns']);
if (!isset ($this->patterns [$this->yystack[$this->yyidx + 0 ]->minor ])) {
$this->error('Undefined pattern "' . $this->yystack[$this->yyidx + 0 ]->minor . '" used in rules');
throw new Exception ('Undefined pattern "' . $this->yystack[$this->yyidx + 0 ]->minor . '" used in rules');
$this->_retvalue = array ($this->patterns [$this->yystack[$this->yyidx + 0 ]->minor ], $this->yystack[$this->yyidx + 0 ]->minor );
if (!isset ($this->patterns [$this->yystack[$this->yyidx + 0 ]->minor ])) {
$this->error('Undefined pattern "' . $this->yystack[$this->yyidx + 0 ]->minor . '" used in rules');
throw new Exception ('Undefined pattern "' . $this->yystack[$this->yyidx + 0 ]->minor . '" used in rules');
// increment internal sub-pattern counter
// adjust back-references in pattern based on previous pattern
$test = $this->_validatePattern ($this->yystack[$this->yyidx + 0 ]->minor , true );
$this->_patternIndex += $test['subpatterns'];
$this->_retvalue = $test['pattern'];
// increment internal sub-pattern counter
// adjust back-references in pattern based on previous pattern
$test = $this->_validatePattern ($this->yystack[$this->yyidx + 0 ]->minor , true );
$this->_patternIndex += $test['subpatterns'];
$this->_retvalue = $this->yystack[$this->yyidx + -1 ]->minor . $test['pattern'];
* placeholder for the left hand side in a reduce operation.
* For a parser with a rule like this:
* rule(A) ::= B. { A = 1; }
* The parser will translate to something like:
* function yy_r0(){$this->_retvalue = 1;}
* Perform a reduce action and the shift that must immediately
* A ::= B blah C. { dosomething(); }
* This function will first call the action, if any, ("dosomething();" in our
* example), and then it will pop three states from the stack,
* one for each entry on the right-hand side of the expression
* (B, blah, and C in our example rule), and then push the result of the action
* back on to the stack with the resulting state reduced to (as described in the .out
* @param int Number of the rule by which to reduce
//int $yygoto; /* The next state */
//int $yyact; /* The next action */
//mixed $yygotominor; /* The LHS of the rule reduced */
//PHP_LexerGenerator_ParseryyStackEntry $yymsp; /* The top of the parser's stack */
//int $yysize; /* Amount to pop the stack */
if (self ::$yyTraceFILE && $yyruleno >= 0
&& $yyruleno < count (self ::$yyRuleName)) {
fprintf (self ::$yyTraceFILE, "%sReduce (%d) [%s].\n",
self ::$yyTracePrompt, $yyruleno,
self ::$yyRuleName[$yyruleno]);
$this->_retvalue = $yy_lefthand_side = null;
$this->{'yy_r' . self ::$yyReduceMap[$yyruleno]}();
$yy_lefthand_side = $this->_retvalue;
$yygoto = self ::$yyRuleInfo[$yyruleno]['lhs'];
$yysize = self ::$yyRuleInfo[$yyruleno]['rhs'];
for($i = $yysize; $i; $i-- ) {
// pop all of the right-hand side parameters
if ($yyact < self ::YYNSTATE ) {
/* If we are not debugging and the reduce action popped at least
** one element off the stack, then we can push the new element back
** onto the stack here, and skip the stack overflow test in yy_shift().
** That gives a significant speed improvement. */
if (!self ::$yyTraceFILE && $yysize) {
$x = new PHP_LexerGenerator_ParseryyStackEntry;
$x->minor = $yy_lefthand_side;
$this->yy_shift($yyact, $yygoto, $yy_lefthand_side);
} elseif ($yyact == self ::YYNSTATE + self ::YYNRULE + 1 ) {
* The following code executes when the parse fails
* Code from %parse_fail is inserted here
if (self ::$yyTraceFILE) {
fprintf (self ::$yyTraceFILE, "%sFail!\n", self ::$yyTracePrompt);
while ($this->yyidx >= 0 ) {
/* Here code is inserted which will be executed whenever the
* The following code executes when a syntax error first occurs.
* %syntax_error code is inserted here
* @param int The major type of the error token
* @param mixed The minor type of the error token
echo "Syntax Error on line " . $this->lex ->line . ": token '" .
$this->lex ->value . "' while parsing rule:";
foreach ($this->yystack as $entry) {
$expect[] = self ::$yyTokenName[$token];
throw new Exception ('Unexpected ' . $this->tokenName($yymajor) . '(' . $TOKEN
. '), expected one of: ' . implode(',', $expect));
* The following is executed when the parser accepts
* %parse_accept code is inserted here
if (self ::$yyTraceFILE) {
fprintf (self ::$yyTraceFILE, "%sAccept!\n", self ::$yyTracePrompt);
while ($this->yyidx >= 0 ) {
/* Here code is inserted which will be executed whenever the
* The main parser program.
* The first argument is the major token number. The second is
* the token value string as scanned from the input.
* @param int the token number
* @param mixed the token value
* @param mixed any extra arguments that should be passed to handlers
function doParse($yymajor, $yytokenvalue)
// $yyact; /* The parser action. */
// $yyendofinput; /* True if we are at the end of input */
$yyerrorhit = 0; /* True if yymajor has invoked an error */
/* (re)initialize the parser, if necessary */
/* if ($yymajor == 0) return; // not sure why this was here... */
$x = new PHP_LexerGenerator_ParseryyStackEntry;
$yyendofinput = ($yymajor==0 );
if (self ::$yyTraceFILE) {
fprintf (self ::$yyTraceFILE, "%sInput %s\n",
self ::$yyTracePrompt, self ::$yyTokenName[$yymajor]);
$yyact = $this->yy_find_shift_action ($yymajor);
if ($yymajor < self ::YYERRORSYMBOL &&
$yyact = self ::YY_ERROR_ACTION;
if ($yyact < self ::YYNSTATE ) {
$this->yy_shift($yyact, $yymajor, $yytokenvalue);
if ($yyendofinput && $this->yyidx >= 0 ) {
$yymajor = self ::YYNOCODE;
} elseif ($yyact < self ::YYNSTATE + self ::YYNRULE ) {
} elseif ($yyact == self ::YY_ERROR_ACTION ) {
if (self ::$yyTraceFILE) {
fprintf (self ::$yyTraceFILE, "%sSyntax Error!\n",
if (self ::YYERRORSYMBOL ) {
/* A syntax error has occurred.
** The response to an error depends upon whether or not the
** grammar defines an error token "ERROR".
** This is what we do if the grammar does define ERROR:
** * Call the %syntax_error function.
** * Begin popping the stack until we enter a state where
** it is legal to shift the error symbol, then shift
** * Set the error count to three.
** * Begin accepting and shifting new tokens. No new error
** processing will occur until three tokens have been
if ($yymx == self ::YYERRORSYMBOL || $yyerrorhit ){
if (self ::$yyTraceFILE) {
fprintf (self ::$yyTraceFILE, "%sDiscard input token %s\n",
self ::$yyTracePrompt, self ::$yyTokenName[$yymajor]);
$this->yy_destructor ($yymajor, $yytokenvalue);
$yymajor = self ::YYNOCODE;
while ($this->yyidx >= 0 &&
$yymx != self ::YYERRORSYMBOL &&
if ($this->yyidx < 0 || $yymajor==0 ) {
$yymajor = self ::YYNOCODE;
} elseif ($yymx != self ::YYERRORSYMBOL ) {
$this->yy_shift($yyact, self ::YYERRORSYMBOL , $u2);
/* YYERRORSYMBOL is not defined */
/* This is what we do if the grammar does not define ERROR:
** * Report an error message, and throw away the input token.
** * If the input token is $, then fail the parse.
** As before, subsequent error messages are suppressed until
** three input tokens have been successfully shifted.
$yymajor = self ::YYNOCODE;
$yymajor = self ::YYNOCODE;
} while ($yymajor != self ::YYNOCODE && $this->yyidx >= 0 );
Documentation generated on Mon, 11 Mar 2019 15:40:44 -0400 by phpDocumentor 1.4.4. PEAR Logo Copyright © PHP Group 2004.
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