JuKu /
JuKuCMS
| Total Complexity | 153 |
| Total Lines | 691 |
| Duplicated Lines | 0 % |
| Changes | 0 | ||
Complex classes like Twig_ExpressionParser often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use Twig_ExpressionParser, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 25 | class Twig_ExpressionParser |
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| 26 | { |
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| 27 | const OPERATOR_LEFT = 1; |
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| 28 | const OPERATOR_RIGHT = 2; |
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| 29 | |||
| 30 | private $parser; |
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| 31 | private $env; |
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| 32 | private $unaryOperators; |
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| 33 | private $binaryOperators; |
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| 34 | |||
| 35 | public function __construct(Twig_Parser $parser, Twig_Environment $env) |
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| 36 | { |
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| 37 | $this->parser = $parser; |
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| 38 | $this->env = $env; |
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| 39 | $this->unaryOperators = $env->getUnaryOperators(); |
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| 40 | $this->binaryOperators = $env->getBinaryOperators(); |
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| 41 | } |
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| 42 | |||
| 43 | public function parseExpression($precedence = 0) |
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| 71 | } |
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| 72 | |||
| 73 | private function getPrimary() |
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| 74 | { |
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| 75 | $token = $this->parser->getCurrentToken(); |
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| 76 | |||
| 77 | if ($this->isUnary($token)) { |
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| 78 | $operator = $this->unaryOperators[$token->getValue()]; |
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| 79 | $this->parser->getStream()->next(); |
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| 80 | $expr = $this->parseExpression($operator['precedence']); |
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| 81 | $class = $operator['class']; |
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| 82 | |||
| 83 | return $this->parsePostfixExpression(new $class($expr, $token->getLine())); |
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| 84 | } elseif ($token->test(Twig_Token::PUNCTUATION_TYPE, '(')) { |
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| 85 | $this->parser->getStream()->next(); |
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| 86 | $expr = $this->parseExpression(); |
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| 87 | $this->parser->getStream()->expect(Twig_Token::PUNCTUATION_TYPE, ')', 'An opened parenthesis is not properly closed'); |
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| 88 | |||
| 89 | return $this->parsePostfixExpression($expr); |
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| 90 | } |
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| 91 | |||
| 92 | return $this->parsePrimaryExpression(); |
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| 93 | } |
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| 94 | |||
| 95 | private function parseConditionalExpression($expr) |
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| 96 | { |
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| 97 | while ($this->parser->getStream()->nextIf(Twig_Token::PUNCTUATION_TYPE, '?')) { |
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| 98 | if (!$this->parser->getStream()->nextIf(Twig_Token::PUNCTUATION_TYPE, ':')) { |
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| 99 | $expr2 = $this->parseExpression(); |
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| 100 | if ($this->parser->getStream()->nextIf(Twig_Token::PUNCTUATION_TYPE, ':')) { |
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| 101 | $expr3 = $this->parseExpression(); |
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| 102 | } else { |
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| 103 | $expr3 = new Twig_Node_Expression_Constant('', $this->parser->getCurrentToken()->getLine()); |
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| 104 | } |
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| 105 | } else { |
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| 106 | $expr2 = $expr; |
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| 107 | $expr3 = $this->parseExpression(); |
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| 108 | } |
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| 109 | |||
| 110 | $expr = new Twig_Node_Expression_Conditional($expr, $expr2, $expr3, $this->parser->getCurrentToken()->getLine()); |
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| 111 | } |
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| 112 | |||
| 113 | return $expr; |
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| 114 | } |
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| 115 | |||
| 116 | private function isUnary(Twig_Token $token) |
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| 117 | { |
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| 118 | return $token->test(Twig_Token::OPERATOR_TYPE) && isset($this->unaryOperators[$token->getValue()]); |
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| 119 | } |
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| 120 | |||
| 121 | private function isBinary(Twig_Token $token) |
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| 122 | { |
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| 123 | return $token->test(Twig_Token::OPERATOR_TYPE) && isset($this->binaryOperators[$token->getValue()]); |
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| 124 | } |
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| 125 | |||
| 126 | public function parsePrimaryExpression() |
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| 127 | { |
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| 128 | $token = $this->parser->getCurrentToken(); |
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| 129 | switch ($token->getType()) { |
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| 130 | case Twig_Token::NAME_TYPE: |
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| 131 | $this->parser->getStream()->next(); |
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| 132 | switch ($token->getValue()) { |
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| 133 | case 'true': |
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| 134 | case 'TRUE': |
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| 135 | $node = new Twig_Node_Expression_Constant(true, $token->getLine()); |
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| 136 | break; |
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| 137 | |||
| 138 | case 'false': |
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| 139 | case 'FALSE': |
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| 140 | $node = new Twig_Node_Expression_Constant(false, $token->getLine()); |
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| 141 | break; |
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| 142 | |||
| 143 | case 'none': |
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| 144 | case 'NONE': |
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| 145 | case 'null': |
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| 146 | case 'NULL': |
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| 147 | $node = new Twig_Node_Expression_Constant(null, $token->getLine()); |
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| 148 | break; |
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| 149 | |||
| 150 | default: |
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| 151 | if ('(' === $this->parser->getCurrentToken()->getValue()) { |
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| 152 | $node = $this->getFunctionNode($token->getValue(), $token->getLine()); |
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| 153 | } else { |
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| 154 | $node = new Twig_Node_Expression_Name($token->getValue(), $token->getLine()); |
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| 155 | } |
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| 156 | } |
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| 157 | break; |
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| 158 | |||
| 159 | case Twig_Token::NUMBER_TYPE: |
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| 160 | $this->parser->getStream()->next(); |
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| 161 | $node = new Twig_Node_Expression_Constant($token->getValue(), $token->getLine()); |
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| 162 | break; |
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| 163 | |||
| 164 | case Twig_Token::STRING_TYPE: |
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| 165 | case Twig_Token::INTERPOLATION_START_TYPE: |
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| 166 | $node = $this->parseStringExpression(); |
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| 167 | break; |
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| 168 | |||
| 169 | case Twig_Token::OPERATOR_TYPE: |
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| 170 | if (preg_match(Twig_Lexer::REGEX_NAME, $token->getValue(), $matches) && $matches[0] == $token->getValue()) { |
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| 171 | // in this context, string operators are variable names |
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| 172 | $this->parser->getStream()->next(); |
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| 173 | $node = new Twig_Node_Expression_Name($token->getValue(), $token->getLine()); |
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| 174 | break; |
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| 175 | } elseif (isset($this->unaryOperators[$token->getValue()])) { |
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| 176 | $class = $this->unaryOperators[$token->getValue()]['class']; |
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| 177 | |||
| 178 | $ref = new ReflectionClass($class); |
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| 179 | $negClass = 'Twig_Node_Expression_Unary_Neg'; |
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| 180 | $posClass = 'Twig_Node_Expression_Unary_Pos'; |
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| 181 | if (!(in_array($ref->getName(), array($negClass, $posClass)) || $ref->isSubclassOf($negClass) || $ref->isSubclassOf($posClass))) { |
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| 182 | throw new Twig_Error_Syntax(sprintf('Unexpected unary operator "%s".', $token->getValue()), $token->getLine(), $this->parser->getStream()->getSourceContext()); |
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| 183 | } |
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| 184 | |||
| 185 | $this->parser->getStream()->next(); |
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| 186 | $expr = $this->parsePrimaryExpression(); |
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| 187 | |||
| 188 | $node = new $class($expr, $token->getLine()); |
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| 189 | break; |
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| 190 | } |
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| 191 | |||
| 192 | // no break |
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| 193 | default: |
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| 194 | if ($token->test(Twig_Token::PUNCTUATION_TYPE, '[')) { |
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| 195 | $node = $this->parseArrayExpression(); |
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| 196 | } elseif ($token->test(Twig_Token::PUNCTUATION_TYPE, '{')) { |
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| 197 | $node = $this->parseHashExpression(); |
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| 198 | } elseif ($token->test(Twig_Token::OPERATOR_TYPE, '=') && ('==' === $this->parser->getStream()->look(-1)->getValue() || '!=' === $this->parser->getStream()->look(-1)->getValue())) { |
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| 199 | throw new Twig_Error_Syntax(sprintf('Unexpected operator of value "%s". Did you try to use "===" or "!==" for strict comparison? Use "is same as(value)" instead.', $token->getValue()), $token->getLine(), $this->parser->getStream()->getSourceContext()); |
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| 200 | } else { |
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| 201 | throw new Twig_Error_Syntax(sprintf('Unexpected token "%s" of value "%s".', Twig_Token::typeToEnglish($token->getType()), $token->getValue()), $token->getLine(), $this->parser->getStream()->getSourceContext()); |
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| 202 | } |
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| 203 | } |
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| 204 | |||
| 205 | return $this->parsePostfixExpression($node); |
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| 206 | } |
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| 207 | |||
| 208 | public function parseStringExpression() |
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| 209 | { |
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| 210 | $stream = $this->parser->getStream(); |
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| 211 | |||
| 212 | $nodes = array(); |
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| 213 | // a string cannot be followed by another string in a single expression |
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| 214 | $nextCanBeString = true; |
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| 215 | while (true) { |
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| 216 | if ($nextCanBeString && $token = $stream->nextIf(Twig_Token::STRING_TYPE)) { |
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| 217 | $nodes[] = new Twig_Node_Expression_Constant($token->getValue(), $token->getLine()); |
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| 218 | $nextCanBeString = false; |
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| 219 | } elseif ($stream->nextIf(Twig_Token::INTERPOLATION_START_TYPE)) { |
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| 220 | $nodes[] = $this->parseExpression(); |
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| 221 | $stream->expect(Twig_Token::INTERPOLATION_END_TYPE); |
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| 222 | $nextCanBeString = true; |
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| 223 | } else { |
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| 224 | break; |
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| 225 | } |
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| 226 | } |
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| 227 | |||
| 228 | $expr = array_shift($nodes); |
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| 229 | foreach ($nodes as $node) { |
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| 230 | $expr = new Twig_Node_Expression_Binary_Concat($expr, $node, $node->getTemplateLine()); |
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| 231 | } |
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| 232 | |||
| 233 | return $expr; |
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| 234 | } |
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| 235 | |||
| 236 | public function parseArrayExpression() |
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| 237 | { |
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| 238 | $stream = $this->parser->getStream(); |
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| 239 | $stream->expect(Twig_Token::PUNCTUATION_TYPE, '[', 'An array element was expected'); |
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| 240 | |||
| 241 | $node = new Twig_Node_Expression_Array(array(), $stream->getCurrent()->getLine()); |
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| 242 | $first = true; |
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| 243 | while (!$stream->test(Twig_Token::PUNCTUATION_TYPE, ']')) { |
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| 244 | if (!$first) { |
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| 245 | $stream->expect(Twig_Token::PUNCTUATION_TYPE, ',', 'An array element must be followed by a comma'); |
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| 246 | |||
| 247 | // trailing ,? |
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| 248 | if ($stream->test(Twig_Token::PUNCTUATION_TYPE, ']')) { |
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| 249 | break; |
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| 250 | } |
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| 251 | } |
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| 252 | $first = false; |
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| 253 | |||
| 254 | $node->addElement($this->parseExpression()); |
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| 255 | } |
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| 256 | $stream->expect(Twig_Token::PUNCTUATION_TYPE, ']', 'An opened array is not properly closed'); |
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| 257 | |||
| 258 | return $node; |
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| 259 | } |
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| 260 | |||
| 261 | public function parseHashExpression() |
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| 262 | { |
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| 263 | $stream = $this->parser->getStream(); |
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| 264 | $stream->expect(Twig_Token::PUNCTUATION_TYPE, '{', 'A hash element was expected'); |
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| 265 | |||
| 266 | $node = new Twig_Node_Expression_Array(array(), $stream->getCurrent()->getLine()); |
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| 267 | $first = true; |
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| 268 | while (!$stream->test(Twig_Token::PUNCTUATION_TYPE, '}')) { |
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| 269 | if (!$first) { |
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| 270 | $stream->expect(Twig_Token::PUNCTUATION_TYPE, ',', 'A hash value must be followed by a comma'); |
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| 271 | |||
| 272 | // trailing ,? |
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| 273 | if ($stream->test(Twig_Token::PUNCTUATION_TYPE, '}')) { |
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| 274 | break; |
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| 275 | } |
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| 276 | } |
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| 277 | $first = false; |
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| 278 | |||
| 279 | // a hash key can be: |
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| 280 | // |
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| 281 | // * a number -- 12 |
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| 282 | // * a string -- 'a' |
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| 283 | // * a name, which is equivalent to a string -- a |
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| 284 | // * an expression, which must be enclosed in parentheses -- (1 + 2) |
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| 285 | if (($token = $stream->nextIf(Twig_Token::STRING_TYPE)) || ($token = $stream->nextIf(Twig_Token::NAME_TYPE)) || $token = $stream->nextIf(Twig_Token::NUMBER_TYPE)) { |
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| 286 | $key = new Twig_Node_Expression_Constant($token->getValue(), $token->getLine()); |
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| 287 | } elseif ($stream->test(Twig_Token::PUNCTUATION_TYPE, '(')) { |
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| 288 | $key = $this->parseExpression(); |
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| 289 | } else { |
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| 290 | $current = $stream->getCurrent(); |
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| 291 | |||
| 292 | throw new Twig_Error_Syntax(sprintf('A hash key must be a quoted string, a number, a name, or an expression enclosed in parentheses (unexpected token "%s" of value "%s".', Twig_Token::typeToEnglish($current->getType()), $current->getValue()), $current->getLine(), $stream->getSourceContext()); |
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| 293 | } |
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| 294 | |||
| 295 | $stream->expect(Twig_Token::PUNCTUATION_TYPE, ':', 'A hash key must be followed by a colon (:)'); |
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| 296 | $value = $this->parseExpression(); |
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| 297 | |||
| 298 | $node->addElement($value, $key); |
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| 299 | } |
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| 300 | $stream->expect(Twig_Token::PUNCTUATION_TYPE, '}', 'An opened hash is not properly closed'); |
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| 301 | |||
| 302 | return $node; |
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| 303 | } |
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| 304 | |||
| 305 | public function parsePostfixExpression($node) |
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| 306 | { |
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| 307 | while (true) { |
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| 308 | $token = $this->parser->getCurrentToken(); |
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| 309 | if (Twig_Token::PUNCTUATION_TYPE == $token->getType()) { |
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| 310 | if ('.' == $token->getValue() || '[' == $token->getValue()) { |
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| 311 | $node = $this->parseSubscriptExpression($node); |
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| 312 | } elseif ('|' == $token->getValue()) { |
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| 313 | $node = $this->parseFilterExpression($node); |
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| 314 | } else { |
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| 315 | break; |
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| 316 | } |
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| 317 | } else { |
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| 318 | break; |
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| 319 | } |
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| 320 | } |
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| 321 | |||
| 322 | return $node; |
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| 323 | } |
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| 324 | |||
| 325 | public function getFunctionNode($name, $line) |
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| 326 | { |
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| 327 | switch ($name) { |
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| 328 | case 'parent': |
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| 329 | $this->parseArguments(); |
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| 330 | if (!count($this->parser->getBlockStack())) { |
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| 331 | throw new Twig_Error_Syntax('Calling "parent" outside a block is forbidden.', $line, $this->parser->getStream()->getSourceContext()); |
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| 332 | } |
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| 333 | |||
| 334 | if (!$this->parser->getParent() && !$this->parser->hasTraits()) { |
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| 335 | throw new Twig_Error_Syntax('Calling "parent" on a template that does not extend nor "use" another template is forbidden.', $line, $this->parser->getStream()->getSourceContext()); |
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| 336 | } |
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| 337 | |||
| 338 | return new Twig_Node_Expression_Parent($this->parser->peekBlockStack(), $line); |
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| 339 | case 'block': |
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| 340 | $args = $this->parseArguments(); |
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| 341 | if (count($args) < 1) { |
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| 342 | throw new Twig_Error_Syntax('The "block" function takes one argument (the block name).', $line, $this->parser->getStream()->getSourceContext()); |
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| 343 | } |
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| 344 | |||
| 345 | return new Twig_Node_Expression_BlockReference($args->getNode(0), count($args) > 1 ? $args->getNode(1) : null, $line); |
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| 346 | case 'attribute': |
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| 347 | $args = $this->parseArguments(); |
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| 348 | if (count($args) < 2) { |
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| 349 | throw new Twig_Error_Syntax('The "attribute" function takes at least two arguments (the variable and the attributes).', $line, $this->parser->getStream()->getSourceContext()); |
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| 350 | } |
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| 351 | |||
| 352 | return new Twig_Node_Expression_GetAttr($args->getNode(0), $args->getNode(1), count($args) > 2 ? $args->getNode(2) : null, Twig_Template::ANY_CALL, $line); |
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| 353 | default: |
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| 354 | if (null !== $alias = $this->parser->getImportedSymbol('function', $name)) { |
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| 355 | $arguments = new Twig_Node_Expression_Array(array(), $line); |
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| 356 | foreach ($this->parseArguments() as $n) { |
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| 357 | $arguments->addElement($n); |
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| 358 | } |
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| 359 | |||
| 360 | $node = new Twig_Node_Expression_MethodCall($alias['node'], $alias['name'], $arguments, $line); |
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| 361 | $node->setAttribute('safe', true); |
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| 362 | |||
| 363 | return $node; |
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| 364 | } |
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| 365 | |||
| 366 | $args = $this->parseArguments(true); |
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| 367 | $class = $this->getFunctionNodeClass($name, $line); |
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| 368 | |||
| 369 | return new $class($name, $args, $line); |
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| 370 | } |
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| 371 | } |
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| 372 | |||
| 373 | public function parseSubscriptExpression($node) |
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| 374 | { |
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| 375 | $stream = $this->parser->getStream(); |
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| 376 | $token = $stream->next(); |
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| 377 | $lineno = $token->getLine(); |
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| 378 | $arguments = new Twig_Node_Expression_Array(array(), $lineno); |
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| 379 | $type = Twig_Template::ANY_CALL; |
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| 380 | if ('.' == $token->getValue()) { |
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| 381 | $token = $stream->next(); |
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| 382 | if ( |
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| 383 | Twig_Token::NAME_TYPE == $token->getType() |
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| 384 | || |
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| 385 | Twig_Token::NUMBER_TYPE == $token->getType() |
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| 386 | || |
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| 387 | (Twig_Token::OPERATOR_TYPE == $token->getType() && preg_match(Twig_Lexer::REGEX_NAME, $token->getValue())) |
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| 388 | ) { |
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| 389 | $arg = new Twig_Node_Expression_Constant($token->getValue(), $lineno); |
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| 390 | |||
| 391 | if ($stream->test(Twig_Token::PUNCTUATION_TYPE, '(')) { |
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| 392 | $type = Twig_Template::METHOD_CALL; |
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| 393 | foreach ($this->parseArguments() as $n) { |
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| 394 | $arguments->addElement($n); |
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| 395 | } |
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| 396 | } |
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| 397 | } else { |
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| 398 | throw new Twig_Error_Syntax('Expected name or number.', $lineno, $stream->getSourceContext()); |
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| 399 | } |
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| 400 | |||
| 401 | if ($node instanceof Twig_Node_Expression_Name && null !== $this->parser->getImportedSymbol('template', $node->getAttribute('name'))) { |
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| 402 | if (!$arg instanceof Twig_Node_Expression_Constant) { |
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|
introduced
by
|
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| 403 | throw new Twig_Error_Syntax(sprintf('Dynamic macro names are not supported (called on "%s").', $node->getAttribute('name')), $token->getLine(), $stream->getSourceContext()); |
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| 404 | } |
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| 405 | |||
| 406 | $name = $arg->getAttribute('value'); |
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| 407 | |||
| 408 | $node = new Twig_Node_Expression_MethodCall($node, 'macro_'.$name, $arguments, $lineno); |
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| 409 | $node->setAttribute('safe', true); |
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| 410 | |||
| 411 | return $node; |
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| 412 | } |
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| 413 | } else { |
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| 414 | $type = Twig_Template::ARRAY_CALL; |
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| 415 | |||
| 416 | // slice? |
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| 417 | $slice = false; |
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| 418 | if ($stream->test(Twig_Token::PUNCTUATION_TYPE, ':')) { |
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| 419 | $slice = true; |
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| 420 | $arg = new Twig_Node_Expression_Constant(0, $token->getLine()); |
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| 421 | } else { |
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| 422 | $arg = $this->parseExpression(); |
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| 423 | } |
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| 424 | |||
| 425 | if ($stream->nextIf(Twig_Token::PUNCTUATION_TYPE, ':')) { |
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| 426 | $slice = true; |
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| 427 | } |
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| 428 | |||
| 429 | if ($slice) { |
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| 430 | if ($stream->test(Twig_Token::PUNCTUATION_TYPE, ']')) { |
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| 431 | $length = new Twig_Node_Expression_Constant(null, $token->getLine()); |
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| 432 | } else { |
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| 433 | $length = $this->parseExpression(); |
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| 434 | } |
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| 435 | |||
| 436 | $class = $this->getFilterNodeClass('slice', $token->getLine()); |
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| 437 | $arguments = new Twig_Node(array($arg, $length)); |
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| 438 | $filter = new $class($node, new Twig_Node_Expression_Constant('slice', $token->getLine()), $arguments, $token->getLine()); |
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| 439 | |||
| 440 | $stream->expect(Twig_Token::PUNCTUATION_TYPE, ']'); |
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| 441 | |||
| 442 | return $filter; |
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| 443 | } |
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| 444 | |||
| 445 | $stream->expect(Twig_Token::PUNCTUATION_TYPE, ']'); |
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| 446 | } |
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| 447 | |||
| 448 | return new Twig_Node_Expression_GetAttr($node, $arg, $arguments, $type, $lineno); |
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| 449 | } |
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| 450 | |||
| 451 | public function parseFilterExpression($node) |
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| 452 | { |
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| 453 | $this->parser->getStream()->next(); |
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| 454 | |||
| 455 | return $this->parseFilterExpressionRaw($node); |
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| 456 | } |
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| 457 | |||
| 458 | public function parseFilterExpressionRaw($node, $tag = null) |
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| 459 | { |
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| 460 | while (true) { |
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| 461 | $token = $this->parser->getStream()->expect(Twig_Token::NAME_TYPE); |
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| 462 | |||
| 463 | $name = new Twig_Node_Expression_Constant($token->getValue(), $token->getLine()); |
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| 464 | if (!$this->parser->getStream()->test(Twig_Token::PUNCTUATION_TYPE, '(')) { |
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| 465 | $arguments = new Twig_Node(); |
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| 466 | } else { |
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| 467 | $arguments = $this->parseArguments(true); |
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| 468 | } |
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| 469 | |||
| 470 | $class = $this->getFilterNodeClass($name->getAttribute('value'), $token->getLine()); |
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| 471 | |||
| 472 | $node = new $class($node, $name, $arguments, $token->getLine(), $tag); |
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| 473 | |||
| 474 | if (!$this->parser->getStream()->test(Twig_Token::PUNCTUATION_TYPE, '|')) { |
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| 475 | break; |
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| 476 | } |
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| 477 | |||
| 478 | $this->parser->getStream()->next(); |
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| 479 | } |
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| 480 | |||
| 481 | return $node; |
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| 482 | } |
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| 483 | |||
| 484 | /** |
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| 485 | * Parses arguments. |
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| 486 | * |
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| 487 | * @param bool $namedArguments Whether to allow named arguments or not |
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| 488 | * @param bool $definition Whether we are parsing arguments for a function definition |
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| 489 | * |
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| 490 | * @return Twig_Node |
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| 491 | * |
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| 492 | * @throws Twig_Error_Syntax |
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| 493 | */ |
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| 494 | public function parseArguments($namedArguments = false, $definition = false) |
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| 495 | { |
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| 496 | $args = array(); |
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| 497 | $stream = $this->parser->getStream(); |
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| 498 | |||
| 499 | $stream->expect(Twig_Token::PUNCTUATION_TYPE, '(', 'A list of arguments must begin with an opening parenthesis'); |
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| 500 | while (!$stream->test(Twig_Token::PUNCTUATION_TYPE, ')')) { |
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| 501 | if (!empty($args)) { |
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| 502 | $stream->expect(Twig_Token::PUNCTUATION_TYPE, ',', 'Arguments must be separated by a comma'); |
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| 503 | } |
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| 504 | |||
| 505 | if ($definition) { |
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| 506 | $token = $stream->expect(Twig_Token::NAME_TYPE, null, 'An argument must be a name'); |
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| 507 | $value = new Twig_Node_Expression_Name($token->getValue(), $this->parser->getCurrentToken()->getLine()); |
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| 508 | } else { |
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| 509 | $value = $this->parseExpression(); |
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| 510 | } |
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| 511 | |||
| 512 | $name = null; |
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| 513 | if ($namedArguments && $token = $stream->nextIf(Twig_Token::OPERATOR_TYPE, '=')) { |
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| 514 | if (!$value instanceof Twig_Node_Expression_Name) { |
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| 515 | throw new Twig_Error_Syntax(sprintf('A parameter name must be a string, "%s" given.', get_class($value)), $token->getLine(), $stream->getSourceContext()); |
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| 516 | } |
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| 517 | $name = $value->getAttribute('name'); |
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| 518 | |||
| 519 | if ($definition) { |
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| 520 | $value = $this->parsePrimaryExpression(); |
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| 521 | |||
| 522 | if (!$this->checkConstantExpression($value)) { |
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| 523 | throw new Twig_Error_Syntax(sprintf('A default value for an argument must be a constant (a boolean, a string, a number, or an array).'), $token->getLine(), $stream->getSourceContext()); |
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| 524 | } |
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| 525 | } else { |
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| 526 | $value = $this->parseExpression(); |
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| 527 | } |
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| 528 | } |
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| 529 | |||
| 530 | if ($definition) { |
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| 531 | if (null === $name) { |
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| 532 | $name = $value->getAttribute('name'); |
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| 533 | $value = new Twig_Node_Expression_Constant(null, $this->parser->getCurrentToken()->getLine()); |
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| 534 | } |
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| 535 | $args[$name] = $value; |
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| 536 | } else { |
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| 537 | if (null === $name) { |
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| 538 | $args[] = $value; |
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| 539 | } else { |
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| 540 | $args[$name] = $value; |
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| 541 | } |
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| 542 | } |
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| 543 | } |
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| 544 | $stream->expect(Twig_Token::PUNCTUATION_TYPE, ')', 'A list of arguments must be closed by a parenthesis'); |
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| 545 | |||
| 546 | return new Twig_Node($args); |
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| 547 | } |
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| 548 | |||
| 549 | public function parseAssignmentExpression() |
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| 550 | { |
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| 551 | $stream = $this->parser->getStream(); |
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| 552 | $targets = array(); |
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| 553 | while (true) { |
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| 554 | $token = $stream->expect(Twig_Token::NAME_TYPE, null, 'Only variables can be assigned to'); |
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| 555 | $value = $token->getValue(); |
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| 556 | if (in_array(strtolower($value), array('true', 'false', 'none', 'null'))) { |
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| 557 | throw new Twig_Error_Syntax(sprintf('You cannot assign a value to "%s".', $value), $token->getLine(), $stream->getSourceContext()); |
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| 558 | } |
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| 559 | $targets[] = new Twig_Node_Expression_AssignName($value, $token->getLine()); |
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| 560 | |||
| 561 | if (!$stream->nextIf(Twig_Token::PUNCTUATION_TYPE, ',')) { |
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| 562 | break; |
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| 563 | } |
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| 564 | } |
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| 565 | |||
| 566 | return new Twig_Node($targets); |
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| 567 | } |
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| 568 | |||
| 569 | public function parseMultitargetExpression() |
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| 570 | { |
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| 571 | $targets = array(); |
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| 572 | while (true) { |
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| 573 | $targets[] = $this->parseExpression(); |
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| 574 | if (!$this->parser->getStream()->nextIf(Twig_Token::PUNCTUATION_TYPE, ',')) { |
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| 575 | break; |
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| 576 | } |
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| 577 | } |
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| 578 | |||
| 579 | return new Twig_Node($targets); |
||
| 580 | } |
||
| 581 | |||
| 582 | private function parseNotTestExpression(Twig_Node $node) |
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| 583 | { |
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| 584 | return new Twig_Node_Expression_Unary_Not($this->parseTestExpression($node), $this->parser->getCurrentToken()->getLine()); |
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| 585 | } |
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| 586 | |||
| 587 | private function parseTestExpression(Twig_Node $node) |
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| 588 | { |
||
| 589 | $stream = $this->parser->getStream(); |
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| 590 | list($name, $test) = $this->getTest($node->getTemplateLine()); |
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| 591 | |||
| 592 | $class = $this->getTestNodeClass($test); |
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| 593 | $arguments = null; |
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| 594 | if ($stream->test(Twig_Token::PUNCTUATION_TYPE, '(')) { |
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| 595 | $arguments = $this->parser->getExpressionParser()->parseArguments(true); |
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| 596 | } |
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| 597 | |||
| 598 | return new $class($node, $name, $arguments, $this->parser->getCurrentToken()->getLine()); |
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| 599 | } |
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| 600 | |||
| 601 | private function getTest($line) |
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| 602 | { |
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| 603 | $stream = $this->parser->getStream(); |
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| 604 | $name = $stream->expect(Twig_Token::NAME_TYPE)->getValue(); |
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| 605 | |||
| 606 | if ($test = $this->env->getTest($name)) { |
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| 607 | return array($name, $test); |
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| 608 | } |
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| 609 | |||
| 610 | if ($stream->test(Twig_Token::NAME_TYPE)) { |
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| 611 | // try 2-words tests |
||
| 612 | $name = $name.' '.$this->parser->getCurrentToken()->getValue(); |
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| 613 | |||
| 614 | if ($test = $this->env->getTest($name)) { |
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| 615 | $stream->next(); |
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| 616 | |||
| 617 | return array($name, $test); |
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| 618 | } |
||
| 619 | } |
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| 620 | |||
| 621 | $e = new Twig_Error_Syntax(sprintf('Unknown "%s" test.', $name), $line, $stream->getSourceContext()); |
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| 622 | $e->addSuggestions($name, array_keys($this->env->getTests())); |
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| 623 | |||
| 624 | throw $e; |
||
| 625 | } |
||
| 626 | |||
| 627 | private function getTestNodeClass($test) |
||
| 646 | } |
||
| 647 | |||
| 648 | private function getFunctionNodeClass($name, $line) |
||
| 649 | { |
||
| 650 | if (false === $function = $this->env->getFunction($name)) { |
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| 651 | $e = new Twig_Error_Syntax(sprintf('Unknown "%s" function.', $name), $line, $this->parser->getStream()->getSourceContext()); |
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| 652 | $e->addSuggestions($name, array_keys($this->env->getFunctions())); |
||
| 653 | |||
| 654 | throw $e; |
||
| 655 | } |
||
| 656 | |||
| 657 | if ($function->isDeprecated()) { |
||
| 658 | $message = sprintf('Twig Function "%s" is deprecated', $function->getName()); |
||
| 659 | if (!is_bool($function->getDeprecatedVersion())) { |
||
| 660 | $message .= sprintf(' since version %s', $function->getDeprecatedVersion()); |
||
| 661 | } |
||
| 662 | if ($function->getAlternative()) { |
||
| 663 | $message .= sprintf('. Use "%s" instead', $function->getAlternative()); |
||
| 664 | } |
||
| 665 | $src = $this->parser->getStream()->getSourceContext(); |
||
| 666 | $message .= sprintf(' in %s at line %d.', $src->getPath() ?: $src->getName(), $line); |
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| 667 | |||
| 668 | @trigger_error($message, E_USER_DEPRECATED); |
||
| 669 | } |
||
| 670 | |||
| 671 | return $function->getNodeClass(); |
||
| 672 | } |
||
| 673 | |||
| 674 | private function getFilterNodeClass($name, $line) |
||
| 698 | } |
||
| 699 | |||
| 700 | // checks that the node only contains "constant" elements |
||
| 701 | private function checkConstantExpression(Twig_Node $node) |
||
| 702 | { |
||
| 703 | if (!($node instanceof Twig_Node_Expression_Constant || $node instanceof Twig_Node_Expression_Array |
||
| 704 | || $node instanceof Twig_Node_Expression_Unary_Neg || $node instanceof Twig_Node_Expression_Unary_Pos |
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| 705 | )) { |
||
| 706 | return false; |
||
| 707 | } |
||
| 708 | |||
| 716 | } |
||
| 717 | } |
||
| 718 | |||
| 719 | class_alias('Twig_ExpressionParser', 'Twig\ExpressionParser', false); |
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| 720 |
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