255 lines
8.3 KiB
PHP
255 lines
8.3 KiB
PHP
<?php
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/*
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* $Id$
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* This software consists of voluntary contributions made by many individuals
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* and is licensed under the LGPL. For more information, see
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* <http://www.doctrine-project.org>.
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*/
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namespace Doctrine\ORM\Query;
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/**
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* Scans a DQL query for tokens.
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*
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* @author Guilherme Blanco <guilhermeblanco@hotmail.com>
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* @author Janne Vanhala <jpvanhal@cc.hut.fi>
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* @author Roman Borschel <roman@code-factory.org>
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* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
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* @link www.doctrine-project.org
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* @since 2.0
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* @version $Revision$
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*/
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class Lexer extends \Doctrine\Common\Lexer
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{
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const T_NONE = 1;
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const T_IDENTIFIER = 2;
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const T_INTEGER = 3;
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const T_STRING = 4;
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const T_INPUT_PARAMETER = 5;
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const T_FLOAT = 6;
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const T_ALL = 101;
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const T_AND = 102;
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const T_ANY = 103;
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const T_AS = 104;
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const T_ASC = 105;
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const T_AVG = 106;
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const T_BETWEEN = 107;
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const T_BY = 108;
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const T_COMMA = 109;
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const T_COUNT = 110;
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const T_DELETE = 111;
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const T_DESC = 112;
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const T_DISTINCT = 113;
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const T_DOT = 114;
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const T_EMPTY = 115;
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const T_ESCAPE = 116;
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const T_EXISTS = 117;
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const T_FROM = 118;
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const T_GROUP = 119;
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const T_HAVING = 120;
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const T_IN = 121;
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const T_INDEX = 122;
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const T_INNER = 123;
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const T_IS = 124;
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const T_JOIN = 125;
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const T_LEFT = 126;
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const T_LIKE = 127;
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const T_LIMIT = 128;
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const T_MAX = 129;
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const T_MIN = 130;
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const T_MOD = 131;
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const T_NOT = 132;
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const T_NULL = 133;
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const T_OFFSET = 134;
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const T_ON = 135;
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const T_OR = 136;
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const T_ORDER = 137;
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const T_OUTER = 138;
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const T_SELECT = 139;
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const T_SET = 140;
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const T_SIZE = 141;
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const T_SOME = 142;
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const T_SUM = 143;
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const T_UPDATE = 144;
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const T_WHERE = 145;
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const T_WITH = 146;
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const T_TRUE = 147;
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const T_FALSE = 148;
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const T_MEMBER = 149;
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const T_OF = 150;
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private $_keywordsTable;
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/**
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* Creates a new query scanner object.
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*
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* @param string $input a query string
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*/
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public function __construct($input)
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{
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$this->setInput($input);
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}
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/**
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* @inheritdoc
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*/
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protected function getCatchablePatterns()
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{
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return array(
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'[a-z_][a-z0-9_\\\]*',
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'(?:[0-9]+(?:[,\.][0-9]+)*)(?:e[+-]?[0-9]+)?',
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"'(?:[^']|'')*'",
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'\?[1-9]+|:[a-z][a-z0-9_]+'
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);
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}
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/**
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* @inheritdoc
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*/
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protected function getNonCatchablePatterns()
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{
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return array('\s+', '(.)');
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}
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/**
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* @inheritdoc
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*/
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protected function _getType(&$value)
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{
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$type = self::T_NONE;
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$newVal = $this->_getNumeric($value);
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if ($newVal !== false){
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$value = $newVal;
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if (strpos($value, '.') !== false || stripos($value, 'e') !== false) {
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$type = self::T_FLOAT;
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} else {
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$type = self::T_INTEGER;
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}
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}
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if ($value[0] === "'") {
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$type = self::T_STRING;
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$value = str_replace("''", "'", substr($value, 1, strlen($value) - 2));
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} else if (ctype_alpha($value[0]) || $value[0] === '_') {
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$type = $this->_checkLiteral($value);
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} else if ($value[0] === '?' || $value[0] === ':') {
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$type = self::T_INPUT_PARAMETER;
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}
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return $type;
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}
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/**
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* @todo Doc
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*/
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private function _getNumeric($value)
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{
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if ( ! is_scalar($value)) {
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return false;
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}
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// Checking for valid numeric numbers: 1.234, -1.234e-2
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if (is_numeric($value)) {
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return $value;
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}
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return false;
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}
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/**
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* Checks if an identifier is a keyword and returns its correct type.
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*
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* @param string $identifier identifier name
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* @return int token type
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*/
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private function _checkLiteral($identifier)
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{
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$name = 'Doctrine\ORM\Query\Lexer::T_' . strtoupper($identifier);
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if (defined($name)) {
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$type = constant($name);
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if ($type > 100) {
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return $type;
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}
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}
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return self::T_IDENTIFIER;
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}
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/**
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* Gets the literal for a given token.
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*
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* @param mixed $token
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* @return string
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*/
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public function getLiteral($token)
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{
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if ( ! $this->_keywordsTable) {
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$this->_keywordsTable = array(
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self::T_ALL => "ALL",
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self::T_AND => "AND",
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self::T_ANY => "ANY",
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self::T_AS => "AS",
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self::T_ASC => "ASC",
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self::T_AVG => "AVG",
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self::T_BETWEEN => "BETWEEN",
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self::T_BY => "BY",
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self::T_COMMA => ",",
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self::T_COUNT => "COUNT",
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self::T_DELETE => "DELETE",
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self::T_DESC => "DESC",
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self::T_DISTINCT => "DISTINCT",
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self::T_DOT => ".",
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self::T_EMPTY => "EMPTY",
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self::T_ESCAPE => "ESCAPE",
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self::T_EXISTS => "EXISTS",
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self::T_FALSE => "FALSE",
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self::T_FROM => "FROM",
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self::T_GROUP => "GROUP",
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self::T_HAVING => "HAVING",
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self::T_IN => "IN",
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self::T_INDEX => "INDEX",
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self::T_INNER => "INNER",
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self::T_IS => "IS",
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self::T_JOIN => "JOIN",
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self::T_LEFT => "LEFT",
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self::T_LIKE => "LIKE",
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self::T_LIMIT => "LIMIT",
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self::T_MAX => "MAX",
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self::T_MIN => "MIN",
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self::T_MOD => "MOD",
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self::T_NOT => "NOT",
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self::T_NULL => "NULL",
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self::T_OFFSET => "OFFSET",
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self::T_ON => "ON",
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self::T_OR => "OR",
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self::T_ORDER => "ORDER",
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self::T_OUTER => "OUTER",
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self::T_SELECT => "SELECT",
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self::T_SET => "SET",
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self::T_SIZE => "SIZE",
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self::T_SOME => "SOME",
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self::T_SUM => "SUM",
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self::T_TRUE => "TRUE",
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self::T_UPDATE => "UPDATE",
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self::T_WHERE => "WHERE",
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self::T_WITH => "WITH");
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}
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return isset($this->_keywordsTable[$token])
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? $this->_keywordsTable[$token]
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: (is_string($token) ? $token : '');
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}
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} |