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15 * This software consists of voluntary contributions made by many individuals
16 * and is licensed under the MIT license. For more information, see
17 * <http://www.doctrine-project.org>.
20 namespace Doctrine\ORM\Query;
23 * Scans a DQL query for tokens.
25 * @author Guilherme Blanco <guilhermeblanco@hotmail.com>
26 * @author Janne Vanhala <jpvanhal@cc.hut.fi>
27 * @author Roman Borschel <roman@code-factory.org>
30 class Lexer extends \Doctrine\Common\Lexer
32 // All tokens that are not valid identifiers must be < 100
36 const T_INPUT_PARAMETER = 4;
38 const T_CLOSE_PARENTHESIS = 6;
39 const T_OPEN_PARENTHESIS = 7;
44 const T_GREATER_THAN = 12;
45 const T_LOWER_THAN = 13;
47 const T_MULTIPLY = 15;
50 const T_OPEN_CURLY_BRACE = 18;
51 const T_CLOSE_CURLY_BRACE = 19;
53 // All tokens that are also identifiers should be >= 100
54 const T_IDENTIFIER = 100;
61 const T_BETWEEN = 107;
65 const T_COALESCE = 111;
69 const T_DISTINCT = 115;
83 const T_INSTANCE = 129;
86 const T_LEADING = 132;
104 const T_TRAILING = 150;
106 const T_UPDATE = 152;
110 const T_PARTIAL = 156;
113 * Creates a new query scanner object.
115 * @param string $input a query string
117 public function __construct($input)
119 $this->setInput($input);
125 protected function getCatchablePatterns()
128 '[a-z_\\\][a-z0-9_\:\\\]*[a-z0-9_]{1}',
129 '(?:[0-9]+(?:[\.][0-9]+)*)(?:e[+-]?[0-9]+)?',
131 '\?[0-9]*|:[a-z]{1}[a-z0-9_]{0,}'
138 protected function getNonCatchablePatterns()
140 return array('\s+', '(.)');
146 protected function getType(&$value)
148 $type = self::T_NONE;
151 // Recognize numeric values
152 case (is_numeric($value)):
153 if (strpos($value, '.') !== false || stripos($value, 'e') !== false) {
154 return self::T_FLOAT;
157 return self::T_INTEGER;
159 // Recognize quoted strings
160 case ($value[0] === "'"):
161 $value = str_replace("''", "'", substr($value, 1, strlen($value) - 2));
163 return self::T_STRING;
165 // Recognize identifiers
166 case (ctype_alpha($value[0]) || $value[0] === '_'):
167 $name = 'Doctrine\ORM\Query\Lexer::T_' . strtoupper($value);
169 if (defined($name)) {
170 $type = constant($name);
177 return self::T_IDENTIFIER;
179 // Recognize input parameters
180 case ($value[0] === '?' || $value[0] === ':'):
181 return self::T_INPUT_PARAMETER;
184 case ($value === '.'): return self::T_DOT;
185 case ($value === ','): return self::T_COMMA;
186 case ($value === '('): return self::T_OPEN_PARENTHESIS;
187 case ($value === ')'): return self::T_CLOSE_PARENTHESIS;
188 case ($value === '='): return self::T_EQUALS;
189 case ($value === '>'): return self::T_GREATER_THAN;
190 case ($value === '<'): return self::T_LOWER_THAN;
191 case ($value === '+'): return self::T_PLUS;
192 case ($value === '-'): return self::T_MINUS;
193 case ($value === '*'): return self::T_MULTIPLY;
194 case ($value === '/'): return self::T_DIVIDE;
195 case ($value === '!'): return self::T_NEGATE;
196 case ($value === '{'): return self::T_OPEN_CURLY_BRACE;
197 case ($value === '}'): return self::T_CLOSE_CURLY_BRACE;