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doctrine2/lib/Doctrine/Common/Annotations/Lexer.php

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<?php
/*
* $Id$
*
* 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.
*
* This software consists of voluntary contributions made by many individuals
* and is licensed under the LGPL. For more information, see
* <http://www.doctrine-project.org>.
*/
namespace Doctrine\Common\Annotations;
/**
* Simple lexer for docblock annotations.
*
* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
* @link www.doctrine-project.org
* @since 2.0
* @version $Revision$
* @author Benjamin Eberlei <kontakt@beberlei.de>
* @author Guilherme Blanco <guilhermeblanco@hotmail.com>
* @author Jonathan Wage <jonwage@gmail.com>
* @author Roman Borschel <roman@code-factory.org>
*/
class Lexer extends \Doctrine\Common\Lexer
{
const T_NONE = 1;
const T_IDENTIFIER = 2;
const T_INTEGER = 3;
const T_STRING = 4;
const T_FLOAT = 5;
const T_AT = 101;
const T_CLOSE_CURLY_BRACES = 102;
const T_CLOSE_PARENTHESIS = 103;
const T_COMMA = 104;
const T_EQUALS = 105;
const T_FALSE = 106;
const T_NAMESPACE_SEPARATOR = 107;
const T_OPEN_CURLY_BRACES = 108;
const T_OPEN_PARENTHESIS = 109;
const T_TRUE = 110;
/**
* @inheritdoc
*/
protected function getCatchablePatterns()
{
return array(
'[a-z_][a-z0-9_:]*',
'(?:[0-9]+(?:[\.][0-9]+)*)(?:e[+-]?[0-9]+)?',
'"(?:[^"]|"")*"'
);
}
/**
* @inheritdoc
*/
protected function getNonCatchablePatterns()
{
return array('\s+', '\*+', '(.)');
}
/**
* @inheritdoc
*/
protected function _getType(&$value)
{
$type = self::T_NONE;
$newVal = $this->_getNumeric($value);
// Checking numeric value
if ($newVal !== false) {
$value = $newVal;
return (strpos($value, '.') !== false || stripos($value, 'e') !== false)
? self::T_FLOAT : self::T_INTEGER;
}
if ($value[0] === '"') {
$value = str_replace('""', '"', substr($value, 1, strlen($value) - 2));
return self::T_STRING;
} else {
switch (strtolower($value)) {
case '@':
return self::T_AT;
case ',':
return self::T_COMMA;
case '(':
return self::T_OPEN_PARENTHESIS;
case ')':
return self::T_CLOSE_PARENTHESIS;
case '{':
return self::T_OPEN_CURLY_BRACES;
case '}': return self::T_CLOSE_CURLY_BRACES;
case '=':
return self::T_EQUALS;
case '\\':
return self::T_NAMESPACE_SEPARATOR;
case 'true':
return self::T_TRUE;
case 'false':
return self::T_FALSE;
default:
if (ctype_alpha($value[0]) || $value[0] === '_') {
return self::T_IDENTIFIER;
}
break;
}
}
return $type;
}
/**
* Checks if a value is numeric or not
*
* @param mixed $value Value to be inspected
* @return boolean|integer|float Processed value
*/
private function _getNumeric($value)
{
if ( ! is_scalar($value)) {
return false;
}
// Checking for valid numeric numbers: 1.234, -1.234e-2
if (is_numeric($value)) {
return $value;
}
return false;
}
}