Source for file longestfirst.php

<?php
class CodeGen_PECL_Tools_ProtoParser
{
    const PAR_OPEN = 1;
    const PAR_CLOSE = 2;
    const EQ = 3;
    const COMMA = 4;
    const SEMICOLON = 5;
    const VOID = 6;
    const BOOL = 7;
    const NUMVAL = 8;
    const STRVAL = 9;
}
 
class CodeGen_PECL_Tools_ProtoLexer
{
    private $data;
    public $token;
    public $value;
    private $line;
    private $count;
 
    function __construct($data)
    {
        $this->data  = $data;
        $this->count = 0;
        $this->line  = 1;
    }
 
 
    private $_yy_state = 1;
    private $_yy_stack = array();
 
    function yylex()
    {
        return $this->{'yylex' . $this->_yy_state}();
    }
 
    function yypushstate($state)
    {
        array_push($this->_yy_stack, $this->_yy_state);
        $this->_yy_state = $state;
    }
 
    function yypopstate()
    {
        $this->_yy_state = array_pop($this->_yy_stack);
    }
 
    function yybegin($state)
    {
        $this->_yy_state = $state;
    }
 
 
 
 
    function yylex1()
    {
        do {
            $rules = array(
                '/^[ \t\n]+/',
                '/^\\(/',
                '/^\\)/',
                '/^=/',
                '/^,/',
                '/^;/',
                '/^void/',
                '/^bool(ean)?/',
                '/^[0-9]+|0x[0-9a-fA-F]+/',
                '/^[_a-zA-Z][_a-zA-Z0-9]+/',
            );
            $match = false;
            foreach ($rules as $index => $rule) {
                if (preg_match($rule, substr($this->data, $this->count), $yymatches)) {
                    if ($match) {
                        if (strlen($yymatches[0]) > strlen($match[0][0])) {
                            $match = array($yymatches, $index); // matches, token
                        }
                    } else {
                        $match = array($yymatches, $index);
                    }
                }
            }
            if (!$match) {
                throw new Exception('Unexpected input at line' . $this->line .
                    ': ' . $this->data[$this->count]);
            }
            $this->token = $match[1];
            $this->value = $match[0][0];
            $yysubmatches = $match[0];
            array_shift($yysubmatches);
            if (!$yysubmatches) {
                $yysubmatches = array();
            }
            $r = $this->{'yy_r1_' . $this->token}($yysubmatches);
            if ($r === null) {
                $this->count += strlen($this->value);
                $this->line += substr_count("\n", $this->value);
                // accept this token
                return true;
            } elseif ($r === true) {
                // we have changed state
                // process this token in the new state
                return $this->yylex();
            } elseif ($r === false) {
                $this->count += strlen($this->value);
                $this->line += substr_count("\n", $this->value);
                if ($this->count >= strlen($this->data)) {
                    return false; // end of input
                }
                // skip this token
                continue;
            } else {
                $yy_yymore_patterns = array_slice($rules, $this->token, true);
                // yymore is needed
                do {
                    if (!isset($yy_yymore_patterns[$this->token])) {
                        throw new Exception('cannot do yymore for the last token');
                    }
                    $match = false;
                    foreach ($yy_yymore_patterns[$this->token] as $index => $rule) {
                        if (preg_match($rule,
                                substr($this->data, $this->count), $yymatches)) {
                            $yymatches = array_filter($yymatches, 'strlen'); // remove empty sub-patterns
                            if ($match) {
                                if (strlen($yymatches[0]) > strlen($match[0][0])) {
                                    $match = array($yymatches, $index); // matches, token
                                }
                            } else {
                                $match = array($yymatches, $index);
                            }
                        }
                    }
                    if (!$match) {
                        throw new Exception('Unexpected input at line' . $this->line .
                            ': ' . $this->data[$this->count]);
                    }
                    $this->token = $match[1];
                    $this->value = $match[0][0];
                    $yysubmatches = $match[0];
                    array_shift($yysubmatches);
                    if (!$yysubmatches) {
                        $yysubmatches = array();
                    }
                    $this->line = substr_count("\n", $this->value);
                    $r = $this->{'yy_r1_' . $this->token}();
                } while ($r !== null || !$r);
                if ($r === true) {
                    // we have changed state
                    // process this token in the new state
                    return $this->yylex();
                } else {
                    // accept
                    $this->count += strlen($this->value);
                    $this->line += substr_count("\n", $this->value);
                    return true;
                }
            }
        } while (true);
 
    } // end function
 
    function yy_r1_0($yy_subpatterns)
    {
 
    return false;
    }
    function yy_r1_1($yy_subpatterns)
    {
 
    $this->token = CodeGen_PECL_Tools_ProtoParser::PAR_OPEN;
    }
    function yy_r1_2($yy_subpatterns)
    {
 
    $this->token = CodeGen_PECL_Tools_ProtoParser::PAR_CLOSE;
    }
    function yy_r1_3($yy_subpatterns)
    {
 
    $this->token = CodeGen_PECL_Tools_ProtoParser::EQ;
    }
    function yy_r1_4($yy_subpatterns)
    {
 
    $this->token = CodeGen_PECL_Tools_ProtoParser::COMMA;
    }
    function yy_r1_5($yy_subpatterns)
    {
 
    $this->token = CodeGen_PECL_Tools_ProtoParser::SEMICOLON;
    }
    function yy_r1_6($yy_subpatterns)
    {
 
    $this->token = CodeGen_PECL_Tools_ProtoParser::VOID;
    }
    function yy_r1_7($yy_subpatterns)
    {
 
    $this->token = CodeGen_PECL_Tools_ProtoParser::BOOL;
    }
    function yy_r1_8($yy_subpatterns)
    {
 
    $this->token = CodeGen_PECL_Tools_ProtoParser::NUMVAL;
    }
    function yy_r1_9($yy_subpatterns)
    {
 
    $this->token = CodeGen_PECL_Tools_ProtoParser::STRVAL;
    }
 
 
}
$a = new CodeGen_PECL_Tools_ProtoLexer('booler boolboolean boolean bool');
$a->yylex();
var_dump('advance: ' . $a->value);
$a->yylex();
var_dump('advance: ' . $a->value);
$a->yylex();
var_dump('advance: ' . $a->value);
$a->yylex();
var_dump('advance: ' . $a->value);