<?php
/*
* Copyright 2012 Johannes M. Schmitt <schmittjoh@gmail.com>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
namespace JMS\Parser;
/**
* The simple lexer is a fully usable lexer that does not require sub-classing.
*
* @author Johannes M. Schmitt <schmittjoh@gmail.com>
*/
class SimpleLexer extends AbstractLexer
{
private $regex;
private $callable;
private $tokenNames;
public function __construct($regex, array $tokenNames, $typeCallable)
{
$this->regex = $regex;
$this->callable = $typeCallable;
$this->tokenNames = $tokenNames;
}
public function getName($type)
{
if ( ! isset($this->tokenNames[$type])) {
throw new \InvalidArgumentException(sprintf('There is no token with type %s.', json_encode($type)));
}
return $this->tokenNames[$type];
}
protected function getRegex()
{
return $this->regex;
}
protected function determineTypeAndValue($value)
{
return call_user_func($this->callable, $value);
}
}