|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
/* |
|
4
|
|
|
* This file is part of Twig. |
|
5
|
|
|
* |
|
6
|
|
|
* (c) Fabien Potencier |
|
7
|
|
|
* (c) Armin Ronacher |
|
8
|
|
|
* |
|
9
|
|
|
* For the full copyright and license information, please view the LICENSE |
|
10
|
|
|
* file that was distributed with this source code. |
|
11
|
|
|
*/ |
|
12
|
|
|
|
|
13
|
|
|
/** |
|
14
|
|
|
* Parses expressions. |
|
15
|
|
|
* |
|
16
|
|
|
* This parser implements a "Precedence climbing" algorithm. |
|
17
|
|
|
* |
|
18
|
|
|
* @see http://www.engr.mun.ca/~theo/Misc/exp_parsing.htm |
|
19
|
|
|
* @see http://en.wikipedia.org/wiki/Operator-precedence_parser |
|
20
|
|
|
* |
|
21
|
|
|
* @author Fabien Potencier <[email protected]> |
|
22
|
|
|
* |
|
23
|
|
|
* @internal |
|
24
|
|
|
*/ |
|
25
|
|
|
class Twig_ExpressionParser |
|
26
|
|
|
{ |
|
27
|
|
|
const OPERATOR_LEFT = 1; |
|
28
|
|
|
const OPERATOR_RIGHT = 2; |
|
29
|
|
|
|
|
30
|
|
|
private $parser; |
|
31
|
|
|
private $env; |
|
32
|
|
|
private $unaryOperators; |
|
33
|
|
|
private $binaryOperators; |
|
34
|
|
|
|
|
35
|
|
|
public function __construct(Twig_Parser $parser, Twig_Environment $env) |
|
36
|
|
|
{ |
|
37
|
|
|
$this->parser = $parser; |
|
38
|
|
|
$this->env = $env; |
|
39
|
|
|
$this->unaryOperators = $env->getUnaryOperators(); |
|
40
|
|
|
$this->binaryOperators = $env->getBinaryOperators(); |
|
41
|
|
|
} |
|
42
|
|
|
|
|
43
|
|
|
public function parseExpression($precedence = 0) |
|
44
|
|
|
{ |
|
45
|
|
|
$expr = $this->getPrimary(); |
|
46
|
|
|
$token = $this->parser->getCurrentToken(); |
|
47
|
|
|
while ($this->isBinary($token) && $this->binaryOperators[$token->getValue()]['precedence'] >= $precedence) { |
|
48
|
|
|
$op = $this->binaryOperators[$token->getValue()]; |
|
49
|
|
|
$this->parser->getStream()->next(); |
|
50
|
|
|
|
|
51
|
|
|
if ('is not' === $token->getValue()) { |
|
52
|
|
|
$expr = $this->parseNotTestExpression($expr); |
|
53
|
|
|
} elseif ('is' === $token->getValue()) { |
|
54
|
|
|
$expr = $this->parseTestExpression($expr); |
|
55
|
|
|
} elseif (isset($op['callable'])) { |
|
56
|
|
|
$expr = $op['callable']($this->parser, $expr); |
|
57
|
|
|
} else { |
|
58
|
|
|
$expr1 = $this->parseExpression(self::OPERATOR_LEFT === $op['associativity'] ? $op['precedence'] + 1 : $op['precedence']); |
|
59
|
|
|
$class = $op['class']; |
|
60
|
|
|
$expr = new $class($expr, $expr1, $token->getLine()); |
|
61
|
|
|
} |
|
62
|
|
|
|
|
63
|
|
|
$token = $this->parser->getCurrentToken(); |
|
64
|
|
|
} |
|
65
|
|
|
|
|
66
|
|
|
if (0 === $precedence) { |
|
67
|
|
|
return $this->parseConditionalExpression($expr); |
|
68
|
|
|
} |
|
69
|
|
|
|
|
70
|
|
|
return $expr; |
|
71
|
|
|
} |
|
72
|
|
|
|
|
73
|
|
|
private function getPrimary() |
|
74
|
|
|
{ |
|
75
|
|
|
$token = $this->parser->getCurrentToken(); |
|
76
|
|
|
|
|
77
|
|
|
if ($this->isUnary($token)) { |
|
78
|
|
|
$operator = $this->unaryOperators[$token->getValue()]; |
|
79
|
|
|
$this->parser->getStream()->next(); |
|
80
|
|
|
$expr = $this->parseExpression($operator['precedence']); |
|
81
|
|
|
$class = $operator['class']; |
|
82
|
|
|
|
|
83
|
|
|
return $this->parsePostfixExpression(new $class($expr, $token->getLine())); |
|
84
|
|
|
} elseif ($token->test(Twig_Token::PUNCTUATION_TYPE, '(')) { |
|
85
|
|
|
$this->parser->getStream()->next(); |
|
86
|
|
|
$expr = $this->parseExpression(); |
|
87
|
|
|
$this->parser->getStream()->expect(Twig_Token::PUNCTUATION_TYPE, ')', 'An opened parenthesis is not properly closed'); |
|
88
|
|
|
|
|
89
|
|
|
return $this->parsePostfixExpression($expr); |
|
90
|
|
|
} |
|
91
|
|
|
|
|
92
|
|
|
return $this->parsePrimaryExpression(); |
|
93
|
|
|
} |
|
94
|
|
|
|
|
95
|
|
|
private function parseConditionalExpression($expr) |
|
96
|
|
|
{ |
|
97
|
|
|
while ($this->parser->getStream()->nextIf(Twig_Token::PUNCTUATION_TYPE, '?')) { |
|
98
|
|
|
if (!$this->parser->getStream()->nextIf(Twig_Token::PUNCTUATION_TYPE, ':')) { |
|
99
|
|
|
$expr2 = $this->parseExpression(); |
|
100
|
|
|
if ($this->parser->getStream()->nextIf(Twig_Token::PUNCTUATION_TYPE, ':')) { |
|
101
|
|
|
$expr3 = $this->parseExpression(); |
|
102
|
|
|
} else { |
|
103
|
|
|
$expr3 = new Twig_Node_Expression_Constant('', $this->parser->getCurrentToken()->getLine()); |
|
104
|
|
|
} |
|
105
|
|
|
} else { |
|
106
|
|
|
$expr2 = $expr; |
|
107
|
|
|
$expr3 = $this->parseExpression(); |
|
108
|
|
|
} |
|
109
|
|
|
|
|
110
|
|
|
$expr = new Twig_Node_Expression_Conditional($expr, $expr2, $expr3, $this->parser->getCurrentToken()->getLine()); |
|
111
|
|
|
} |
|
112
|
|
|
|
|
113
|
|
|
return $expr; |
|
114
|
|
|
} |
|
115
|
|
|
|
|
116
|
|
|
private function isUnary(Twig_Token $token) |
|
117
|
|
|
{ |
|
118
|
|
|
return $token->test(Twig_Token::OPERATOR_TYPE) && isset($this->unaryOperators[$token->getValue()]); |
|
119
|
|
|
} |
|
120
|
|
|
|
|
121
|
|
|
private function isBinary(Twig_Token $token) |
|
122
|
|
|
{ |
|
123
|
|
|
return $token->test(Twig_Token::OPERATOR_TYPE) && isset($this->binaryOperators[$token->getValue()]); |
|
124
|
|
|
} |
|
125
|
|
|
|
|
126
|
|
|
public function parsePrimaryExpression() |
|
127
|
|
|
{ |
|
128
|
|
|
$token = $this->parser->getCurrentToken(); |
|
129
|
|
|
switch ($token->getType()) { |
|
130
|
|
|
case Twig_Token::NAME_TYPE: |
|
131
|
|
|
$this->parser->getStream()->next(); |
|
132
|
|
|
switch ($token->getValue()) { |
|
133
|
|
|
case 'true': |
|
134
|
|
|
case 'TRUE': |
|
135
|
|
|
$node = new Twig_Node_Expression_Constant(true, $token->getLine()); |
|
136
|
|
|
break; |
|
137
|
|
|
|
|
138
|
|
|
case 'false': |
|
139
|
|
|
case 'FALSE': |
|
140
|
|
|
$node = new Twig_Node_Expression_Constant(false, $token->getLine()); |
|
141
|
|
|
break; |
|
142
|
|
|
|
|
143
|
|
|
case 'none': |
|
144
|
|
|
case 'NONE': |
|
145
|
|
|
case 'null': |
|
146
|
|
|
case 'NULL': |
|
147
|
|
|
$node = new Twig_Node_Expression_Constant(null, $token->getLine()); |
|
148
|
|
|
break; |
|
149
|
|
|
|
|
150
|
|
|
default: |
|
151
|
|
|
if ('(' === $this->parser->getCurrentToken()->getValue()) { |
|
152
|
|
|
$node = $this->getFunctionNode($token->getValue(), $token->getLine()); |
|
153
|
|
|
} else { |
|
154
|
|
|
$node = new Twig_Node_Expression_Name($token->getValue(), $token->getLine()); |
|
155
|
|
|
} |
|
156
|
|
|
} |
|
157
|
|
|
break; |
|
158
|
|
|
|
|
159
|
|
|
case Twig_Token::NUMBER_TYPE: |
|
160
|
|
|
$this->parser->getStream()->next(); |
|
161
|
|
|
$node = new Twig_Node_Expression_Constant($token->getValue(), $token->getLine()); |
|
162
|
|
|
break; |
|
163
|
|
|
|
|
164
|
|
|
case Twig_Token::STRING_TYPE: |
|
165
|
|
|
case Twig_Token::INTERPOLATION_START_TYPE: |
|
166
|
|
|
$node = $this->parseStringExpression(); |
|
167
|
|
|
break; |
|
168
|
|
|
|
|
169
|
|
|
case Twig_Token::OPERATOR_TYPE: |
|
170
|
|
|
if (preg_match(Twig_Lexer::REGEX_NAME, $token->getValue(), $matches) && $matches[0] == $token->getValue()) { |
|
171
|
|
|
// in this context, string operators are variable names |
|
172
|
|
|
$this->parser->getStream()->next(); |
|
173
|
|
|
$node = new Twig_Node_Expression_Name($token->getValue(), $token->getLine()); |
|
174
|
|
|
break; |
|
175
|
|
|
} elseif (isset($this->unaryOperators[$token->getValue()])) { |
|
176
|
|
|
$class = $this->unaryOperators[$token->getValue()]['class']; |
|
177
|
|
|
|
|
178
|
|
|
$ref = new ReflectionClass($class); |
|
179
|
|
|
$negClass = 'Twig_Node_Expression_Unary_Neg'; |
|
180
|
|
|
$posClass = 'Twig_Node_Expression_Unary_Pos'; |
|
181
|
|
|
if (!(in_array($ref->getName(), array($negClass, $posClass)) || $ref->isSubclassOf($negClass) || $ref->isSubclassOf($posClass))) { |
|
182
|
|
|
throw new Twig_Error_Syntax(sprintf('Unexpected unary operator "%s".', $token->getValue()), $token->getLine(), $this->parser->getStream()->getSourceContext()); |
|
183
|
|
|
} |
|
184
|
|
|
|
|
185
|
|
|
$this->parser->getStream()->next(); |
|
186
|
|
|
$expr = $this->parsePrimaryExpression(); |
|
187
|
|
|
|
|
188
|
|
|
$node = new $class($expr, $token->getLine()); |
|
189
|
|
|
break; |
|
190
|
|
|
} |
|
191
|
|
|
|
|
192
|
|
|
// no break |
|
193
|
|
|
default: |
|
194
|
|
|
if ($token->test(Twig_Token::PUNCTUATION_TYPE, '[')) { |
|
195
|
|
|
$node = $this->parseArrayExpression(); |
|
196
|
|
|
} elseif ($token->test(Twig_Token::PUNCTUATION_TYPE, '{')) { |
|
197
|
|
|
$node = $this->parseHashExpression(); |
|
198
|
|
|
} elseif ($token->test(Twig_Token::OPERATOR_TYPE, '=') && ('==' === $this->parser->getStream()->look(-1)->getValue() || '!=' === $this->parser->getStream()->look(-1)->getValue())) { |
|
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(), $this->parser->getStream()->getSourceContext()); |
|
200
|
|
|
} else { |
|
201
|
|
|
throw new Twig_Error_Syntax(sprintf('Unexpected token "%s" of value "%s".', Twig_Token::typeToEnglish($token->getType()), $token->getValue()), $token->getLine(), $this->parser->getStream()->getSourceContext()); |
|
202
|
|
|
} |
|
203
|
|
|
} |
|
204
|
|
|
|
|
205
|
|
|
return $this->parsePostfixExpression($node); |
|
206
|
|
|
} |
|
207
|
|
|
|
|
208
|
|
|
public function parseStringExpression() |
|
209
|
|
|
{ |
|
210
|
|
|
$stream = $this->parser->getStream(); |
|
211
|
|
|
|
|
212
|
|
|
$nodes = array(); |
|
213
|
|
|
// a string cannot be followed by another string in a single expression |
|
214
|
|
|
$nextCanBeString = true; |
|
215
|
|
|
while (true) { |
|
216
|
|
|
if ($nextCanBeString && $token = $stream->nextIf(Twig_Token::STRING_TYPE)) { |
|
217
|
|
|
$nodes[] = new Twig_Node_Expression_Constant($token->getValue(), $token->getLine()); |
|
218
|
|
|
$nextCanBeString = false; |
|
219
|
|
|
} elseif ($stream->nextIf(Twig_Token::INTERPOLATION_START_TYPE)) { |
|
220
|
|
|
$nodes[] = $this->parseExpression(); |
|
221
|
|
|
$stream->expect(Twig_Token::INTERPOLATION_END_TYPE); |
|
222
|
|
|
$nextCanBeString = true; |
|
223
|
|
|
} else { |
|
224
|
|
|
break; |
|
225
|
|
|
} |
|
226
|
|
|
} |
|
227
|
|
|
|
|
228
|
|
|
$expr = array_shift($nodes); |
|
229
|
|
|
foreach ($nodes as $node) { |
|
230
|
|
|
$expr = new Twig_Node_Expression_Binary_Concat($expr, $node, $node->getTemplateLine()); |
|
231
|
|
|
} |
|
232
|
|
|
|
|
233
|
|
|
return $expr; |
|
234
|
|
|
} |
|
235
|
|
|
|
|
236
|
|
|
public function parseArrayExpression() |
|
237
|
|
|
{ |
|
238
|
|
|
$stream = $this->parser->getStream(); |
|
239
|
|
|
$stream->expect(Twig_Token::PUNCTUATION_TYPE, '[', 'An array element was expected'); |
|
240
|
|
|
|
|
241
|
|
|
$node = new Twig_Node_Expression_Array(array(), $stream->getCurrent()->getLine()); |
|
242
|
|
|
$first = true; |
|
243
|
|
|
while (!$stream->test(Twig_Token::PUNCTUATION_TYPE, ']')) { |
|
244
|
|
|
if (!$first) { |
|
245
|
|
|
$stream->expect(Twig_Token::PUNCTUATION_TYPE, ',', 'An array element must be followed by a comma'); |
|
246
|
|
|
|
|
247
|
|
|
// trailing ,? |
|
248
|
|
|
if ($stream->test(Twig_Token::PUNCTUATION_TYPE, ']')) { |
|
249
|
|
|
break; |
|
250
|
|
|
} |
|
251
|
|
|
} |
|
252
|
|
|
$first = false; |
|
253
|
|
|
|
|
254
|
|
|
$node->addElement($this->parseExpression()); |
|
255
|
|
|
} |
|
256
|
|
|
$stream->expect(Twig_Token::PUNCTUATION_TYPE, ']', 'An opened array is not properly closed'); |
|
257
|
|
|
|
|
258
|
|
|
return $node; |
|
259
|
|
|
} |
|
260
|
|
|
|
|
261
|
|
|
public function parseHashExpression() |
|
262
|
|
|
{ |
|
263
|
|
|
$stream = $this->parser->getStream(); |
|
264
|
|
|
$stream->expect(Twig_Token::PUNCTUATION_TYPE, '{', 'A hash element was expected'); |
|
265
|
|
|
|
|
266
|
|
|
$node = new Twig_Node_Expression_Array(array(), $stream->getCurrent()->getLine()); |
|
267
|
|
|
$first = true; |
|
268
|
|
|
while (!$stream->test(Twig_Token::PUNCTUATION_TYPE, '}')) { |
|
269
|
|
|
if (!$first) { |
|
270
|
|
|
$stream->expect(Twig_Token::PUNCTUATION_TYPE, ',', 'A hash value must be followed by a comma'); |
|
271
|
|
|
|
|
272
|
|
|
// trailing ,? |
|
273
|
|
|
if ($stream->test(Twig_Token::PUNCTUATION_TYPE, '}')) { |
|
274
|
|
|
break; |
|
275
|
|
|
} |
|
276
|
|
|
} |
|
277
|
|
|
$first = false; |
|
278
|
|
|
|
|
279
|
|
|
// a hash key can be: |
|
280
|
|
|
// |
|
281
|
|
|
// * a number -- 12 |
|
282
|
|
|
// * a string -- 'a' |
|
283
|
|
|
// * a name, which is equivalent to a string -- a |
|
284
|
|
|
// * an expression, which must be enclosed in parentheses -- (1 + 2) |
|
285
|
|
|
if (($token = $stream->nextIf(Twig_Token::STRING_TYPE)) || ($token = $stream->nextIf(Twig_Token::NAME_TYPE)) || $token = $stream->nextIf(Twig_Token::NUMBER_TYPE)) { |
|
286
|
|
|
$key = new Twig_Node_Expression_Constant($token->getValue(), $token->getLine()); |
|
287
|
|
|
} elseif ($stream->test(Twig_Token::PUNCTUATION_TYPE, '(')) { |
|
288
|
|
|
$key = $this->parseExpression(); |
|
289
|
|
|
} else { |
|
290
|
|
|
$current = $stream->getCurrent(); |
|
291
|
|
|
|
|
292
|
|
|
throw new Twig_Error_Syntax(sprintf('A hash key must be a quoted string, a number, a name, or an expression enclosed in parentheses (unexpected token "%s" of value "%s".', Twig_Token::typeToEnglish($current->getType()), $current->getValue()), $current->getLine(), $stream->getSourceContext()); |
|
293
|
|
|
} |
|
294
|
|
|
|
|
295
|
|
|
$stream->expect(Twig_Token::PUNCTUATION_TYPE, ':', 'A hash key must be followed by a colon (:)'); |
|
296
|
|
|
$value = $this->parseExpression(); |
|
297
|
|
|
|
|
298
|
|
|
$node->addElement($value, $key); |
|
299
|
|
|
} |
|
300
|
|
|
$stream->expect(Twig_Token::PUNCTUATION_TYPE, '}', 'An opened hash is not properly closed'); |
|
301
|
|
|
|
|
302
|
|
|
return $node; |
|
303
|
|
|
} |
|
304
|
|
|
|
|
305
|
|
|
public function parsePostfixExpression($node) |
|
306
|
|
|
{ |
|
307
|
|
|
while (true) { |
|
308
|
|
|
$token = $this->parser->getCurrentToken(); |
|
309
|
|
|
if (Twig_Token::PUNCTUATION_TYPE == $token->getType()) { |
|
310
|
|
|
if ('.' == $token->getValue() || '[' == $token->getValue()) { |
|
311
|
|
|
$node = $this->parseSubscriptExpression($node); |
|
312
|
|
|
} elseif ('|' == $token->getValue()) { |
|
313
|
|
|
$node = $this->parseFilterExpression($node); |
|
314
|
|
|
} else { |
|
315
|
|
|
break; |
|
316
|
|
|
} |
|
317
|
|
|
} else { |
|
318
|
|
|
break; |
|
319
|
|
|
} |
|
320
|
|
|
} |
|
321
|
|
|
|
|
322
|
|
|
return $node; |
|
323
|
|
|
} |
|
324
|
|
|
|
|
325
|
|
|
public function getFunctionNode($name, $line) |
|
326
|
|
|
{ |
|
327
|
|
|
switch ($name) { |
|
328
|
|
|
case 'parent': |
|
329
|
|
|
$this->parseArguments(); |
|
330
|
|
|
if (!count($this->parser->getBlockStack())) { |
|
331
|
|
|
throw new Twig_Error_Syntax('Calling "parent" outside a block is forbidden.', $line, $this->parser->getStream()->getSourceContext()); |
|
332
|
|
|
} |
|
333
|
|
|
|
|
334
|
|
|
if (!$this->parser->getParent() && !$this->parser->hasTraits()) { |
|
335
|
|
|
throw new Twig_Error_Syntax('Calling "parent" on a template that does not extend nor "use" another template is forbidden.', $line, $this->parser->getStream()->getSourceContext()); |
|
336
|
|
|
} |
|
337
|
|
|
|
|
338
|
|
|
return new Twig_Node_Expression_Parent($this->parser->peekBlockStack(), $line); |
|
339
|
|
|
case 'block': |
|
340
|
|
|
$args = $this->parseArguments(); |
|
341
|
|
|
if (count($args) < 1) { |
|
342
|
|
|
throw new Twig_Error_Syntax('The "block" function takes one argument (the block name).', $line, $this->parser->getStream()->getSourceContext()); |
|
343
|
|
|
} |
|
344
|
|
|
|
|
345
|
|
|
return new Twig_Node_Expression_BlockReference($args->getNode(0), count($args) > 1 ? $args->getNode(1) : null, $line); |
|
346
|
|
|
case 'attribute': |
|
347
|
|
|
$args = $this->parseArguments(); |
|
348
|
|
|
if (count($args) < 2) { |
|
349
|
|
|
throw new Twig_Error_Syntax('The "attribute" function takes at least two arguments (the variable and the attributes).', $line, $this->parser->getStream()->getSourceContext()); |
|
350
|
|
|
} |
|
351
|
|
|
|
|
352
|
|
|
return new Twig_Node_Expression_GetAttr($args->getNode(0), $args->getNode(1), count($args) > 2 ? $args->getNode(2) : null, Twig_Template::ANY_CALL, $line); |
|
353
|
|
|
default: |
|
354
|
|
|
if (null !== $alias = $this->parser->getImportedSymbol('function', $name)) { |
|
355
|
|
|
$arguments = new Twig_Node_Expression_Array(array(), $line); |
|
356
|
|
|
foreach ($this->parseArguments() as $n) { |
|
357
|
|
|
$arguments->addElement($n); |
|
358
|
|
|
} |
|
359
|
|
|
|
|
360
|
|
|
$node = new Twig_Node_Expression_MethodCall($alias['node'], $alias['name'], $arguments, $line); |
|
361
|
|
|
$node->setAttribute('safe', true); |
|
362
|
|
|
|
|
363
|
|
|
return $node; |
|
364
|
|
|
} |
|
365
|
|
|
|
|
366
|
|
|
$args = $this->parseArguments(true); |
|
367
|
|
|
$class = $this->getFunctionNodeClass($name, $line); |
|
368
|
|
|
|
|
369
|
|
|
return new $class($name, $args, $line); |
|
370
|
|
|
} |
|
371
|
|
|
} |
|
372
|
|
|
|
|
373
|
|
|
public function parseSubscriptExpression($node) |
|
374
|
|
|
{ |
|
375
|
|
|
$stream = $this->parser->getStream(); |
|
376
|
|
|
$token = $stream->next(); |
|
377
|
|
|
$lineno = $token->getLine(); |
|
378
|
|
|
$arguments = new Twig_Node_Expression_Array(array(), $lineno); |
|
379
|
|
|
$type = Twig_Template::ANY_CALL; |
|
380
|
|
|
if ('.' == $token->getValue()) { |
|
381
|
|
|
$token = $stream->next(); |
|
382
|
|
|
if ( |
|
383
|
|
|
Twig_Token::NAME_TYPE == $token->getType() |
|
384
|
|
|
|| |
|
385
|
|
|
Twig_Token::NUMBER_TYPE == $token->getType() |
|
386
|
|
|
|| |
|
387
|
|
|
(Twig_Token::OPERATOR_TYPE == $token->getType() && preg_match(Twig_Lexer::REGEX_NAME, $token->getValue())) |
|
388
|
|
|
) { |
|
389
|
|
|
$arg = new Twig_Node_Expression_Constant($token->getValue(), $lineno); |
|
390
|
|
|
|
|
391
|
|
|
if ($stream->test(Twig_Token::PUNCTUATION_TYPE, '(')) { |
|
392
|
|
|
$type = Twig_Template::METHOD_CALL; |
|
393
|
|
|
foreach ($this->parseArguments() as $n) { |
|
394
|
|
|
$arguments->addElement($n); |
|
395
|
|
|
} |
|
396
|
|
|
} |
|
397
|
|
|
} else { |
|
398
|
|
|
throw new Twig_Error_Syntax('Expected name or number.', $lineno, $stream->getSourceContext()); |
|
399
|
|
|
} |
|
400
|
|
|
|
|
401
|
|
|
if ($node instanceof Twig_Node_Expression_Name && null !== $this->parser->getImportedSymbol('template', $node->getAttribute('name'))) { |
|
402
|
|
|
if (!$arg instanceof Twig_Node_Expression_Constant) { |
|
|
|
|
|
|
403
|
|
|
throw new Twig_Error_Syntax(sprintf('Dynamic macro names are not supported (called on "%s").', $node->getAttribute('name')), $token->getLine(), $stream->getSourceContext()); |
|
404
|
|
|
} |
|
405
|
|
|
|
|
406
|
|
|
$name = $arg->getAttribute('value'); |
|
407
|
|
|
|
|
408
|
|
|
$node = new Twig_Node_Expression_MethodCall($node, 'macro_'.$name, $arguments, $lineno); |
|
409
|
|
|
$node->setAttribute('safe', true); |
|
410
|
|
|
|
|
411
|
|
|
return $node; |
|
412
|
|
|
} |
|
413
|
|
|
} else { |
|
414
|
|
|
$type = Twig_Template::ARRAY_CALL; |
|
415
|
|
|
|
|
416
|
|
|
// slice? |
|
417
|
|
|
$slice = false; |
|
418
|
|
|
if ($stream->test(Twig_Token::PUNCTUATION_TYPE, ':')) { |
|
419
|
|
|
$slice = true; |
|
420
|
|
|
$arg = new Twig_Node_Expression_Constant(0, $token->getLine()); |
|
421
|
|
|
} else { |
|
422
|
|
|
$arg = $this->parseExpression(); |
|
423
|
|
|
} |
|
424
|
|
|
|
|
425
|
|
|
if ($stream->nextIf(Twig_Token::PUNCTUATION_TYPE, ':')) { |
|
426
|
|
|
$slice = true; |
|
427
|
|
|
} |
|
428
|
|
|
|
|
429
|
|
|
if ($slice) { |
|
430
|
|
|
if ($stream->test(Twig_Token::PUNCTUATION_TYPE, ']')) { |
|
431
|
|
|
$length = new Twig_Node_Expression_Constant(null, $token->getLine()); |
|
432
|
|
|
} else { |
|
433
|
|
|
$length = $this->parseExpression(); |
|
434
|
|
|
} |
|
435
|
|
|
|
|
436
|
|
|
$class = $this->getFilterNodeClass('slice', $token->getLine()); |
|
437
|
|
|
$arguments = new Twig_Node(array($arg, $length)); |
|
438
|
|
|
$filter = new $class($node, new Twig_Node_Expression_Constant('slice', $token->getLine()), $arguments, $token->getLine()); |
|
439
|
|
|
|
|
440
|
|
|
$stream->expect(Twig_Token::PUNCTUATION_TYPE, ']'); |
|
441
|
|
|
|
|
442
|
|
|
return $filter; |
|
443
|
|
|
} |
|
444
|
|
|
|
|
445
|
|
|
$stream->expect(Twig_Token::PUNCTUATION_TYPE, ']'); |
|
446
|
|
|
} |
|
447
|
|
|
|
|
448
|
|
|
return new Twig_Node_Expression_GetAttr($node, $arg, $arguments, $type, $lineno); |
|
449
|
|
|
} |
|
450
|
|
|
|
|
451
|
|
|
public function parseFilterExpression($node) |
|
452
|
|
|
{ |
|
453
|
|
|
$this->parser->getStream()->next(); |
|
454
|
|
|
|
|
455
|
|
|
return $this->parseFilterExpressionRaw($node); |
|
456
|
|
|
} |
|
457
|
|
|
|
|
458
|
|
|
public function parseFilterExpressionRaw($node, $tag = null) |
|
459
|
|
|
{ |
|
460
|
|
|
while (true) { |
|
461
|
|
|
$token = $this->parser->getStream()->expect(Twig_Token::NAME_TYPE); |
|
462
|
|
|
|
|
463
|
|
|
$name = new Twig_Node_Expression_Constant($token->getValue(), $token->getLine()); |
|
464
|
|
|
if (!$this->parser->getStream()->test(Twig_Token::PUNCTUATION_TYPE, '(')) { |
|
465
|
|
|
$arguments = new Twig_Node(); |
|
466
|
|
|
} else { |
|
467
|
|
|
$arguments = $this->parseArguments(true); |
|
468
|
|
|
} |
|
469
|
|
|
|
|
470
|
|
|
$class = $this->getFilterNodeClass($name->getAttribute('value'), $token->getLine()); |
|
471
|
|
|
|
|
472
|
|
|
$node = new $class($node, $name, $arguments, $token->getLine(), $tag); |
|
473
|
|
|
|
|
474
|
|
|
if (!$this->parser->getStream()->test(Twig_Token::PUNCTUATION_TYPE, '|')) { |
|
475
|
|
|
break; |
|
476
|
|
|
} |
|
477
|
|
|
|
|
478
|
|
|
$this->parser->getStream()->next(); |
|
479
|
|
|
} |
|
480
|
|
|
|
|
481
|
|
|
return $node; |
|
482
|
|
|
} |
|
483
|
|
|
|
|
484
|
|
|
/** |
|
485
|
|
|
* Parses arguments. |
|
486
|
|
|
* |
|
487
|
|
|
* @param bool $namedArguments Whether to allow named arguments or not |
|
488
|
|
|
* @param bool $definition Whether we are parsing arguments for a function definition |
|
489
|
|
|
* |
|
490
|
|
|
* @return Twig_Node |
|
491
|
|
|
* |
|
492
|
|
|
* @throws Twig_Error_Syntax |
|
493
|
|
|
*/ |
|
494
|
|
|
public function parseArguments($namedArguments = false, $definition = false) |
|
495
|
|
|
{ |
|
496
|
|
|
$args = array(); |
|
497
|
|
|
$stream = $this->parser->getStream(); |
|
498
|
|
|
|
|
499
|
|
|
$stream->expect(Twig_Token::PUNCTUATION_TYPE, '(', 'A list of arguments must begin with an opening parenthesis'); |
|
500
|
|
|
while (!$stream->test(Twig_Token::PUNCTUATION_TYPE, ')')) { |
|
501
|
|
|
if (!empty($args)) { |
|
502
|
|
|
$stream->expect(Twig_Token::PUNCTUATION_TYPE, ',', 'Arguments must be separated by a comma'); |
|
503
|
|
|
} |
|
504
|
|
|
|
|
505
|
|
|
if ($definition) { |
|
506
|
|
|
$token = $stream->expect(Twig_Token::NAME_TYPE, null, 'An argument must be a name'); |
|
507
|
|
|
$value = new Twig_Node_Expression_Name($token->getValue(), $this->parser->getCurrentToken()->getLine()); |
|
508
|
|
|
} else { |
|
509
|
|
|
$value = $this->parseExpression(); |
|
510
|
|
|
} |
|
511
|
|
|
|
|
512
|
|
|
$name = null; |
|
513
|
|
|
if ($namedArguments && $token = $stream->nextIf(Twig_Token::OPERATOR_TYPE, '=')) { |
|
514
|
|
|
if (!$value instanceof Twig_Node_Expression_Name) { |
|
515
|
|
|
throw new Twig_Error_Syntax(sprintf('A parameter name must be a string, "%s" given.', get_class($value)), $token->getLine(), $stream->getSourceContext()); |
|
516
|
|
|
} |
|
517
|
|
|
$name = $value->getAttribute('name'); |
|
518
|
|
|
|
|
519
|
|
|
if ($definition) { |
|
520
|
|
|
$value = $this->parsePrimaryExpression(); |
|
521
|
|
|
|
|
522
|
|
|
if (!$this->checkConstantExpression($value)) { |
|
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()); |
|
524
|
|
|
} |
|
525
|
|
|
} else { |
|
526
|
|
|
$value = $this->parseExpression(); |
|
527
|
|
|
} |
|
528
|
|
|
} |
|
529
|
|
|
|
|
530
|
|
|
if ($definition) { |
|
531
|
|
|
if (null === $name) { |
|
532
|
|
|
$name = $value->getAttribute('name'); |
|
533
|
|
|
$value = new Twig_Node_Expression_Constant(null, $this->parser->getCurrentToken()->getLine()); |
|
534
|
|
|
} |
|
535
|
|
|
$args[$name] = $value; |
|
536
|
|
|
} else { |
|
537
|
|
|
if (null === $name) { |
|
538
|
|
|
$args[] = $value; |
|
539
|
|
|
} else { |
|
540
|
|
|
$args[$name] = $value; |
|
541
|
|
|
} |
|
542
|
|
|
} |
|
543
|
|
|
} |
|
544
|
|
|
$stream->expect(Twig_Token::PUNCTUATION_TYPE, ')', 'A list of arguments must be closed by a parenthesis'); |
|
545
|
|
|
|
|
546
|
|
|
return new Twig_Node($args); |
|
547
|
|
|
} |
|
548
|
|
|
|
|
549
|
|
|
public function parseAssignmentExpression() |
|
550
|
|
|
{ |
|
551
|
|
|
$stream = $this->parser->getStream(); |
|
552
|
|
|
$targets = array(); |
|
553
|
|
|
while (true) { |
|
554
|
|
|
$token = $stream->expect(Twig_Token::NAME_TYPE, null, 'Only variables can be assigned to'); |
|
555
|
|
|
$value = $token->getValue(); |
|
556
|
|
|
if (in_array(strtolower($value), array('true', 'false', 'none', 'null'))) { |
|
557
|
|
|
throw new Twig_Error_Syntax(sprintf('You cannot assign a value to "%s".', $value), $token->getLine(), $stream->getSourceContext()); |
|
558
|
|
|
} |
|
559
|
|
|
$targets[] = new Twig_Node_Expression_AssignName($value, $token->getLine()); |
|
560
|
|
|
|
|
561
|
|
|
if (!$stream->nextIf(Twig_Token::PUNCTUATION_TYPE, ',')) { |
|
562
|
|
|
break; |
|
563
|
|
|
} |
|
564
|
|
|
} |
|
565
|
|
|
|
|
566
|
|
|
return new Twig_Node($targets); |
|
567
|
|
|
} |
|
568
|
|
|
|
|
569
|
|
|
public function parseMultitargetExpression() |
|
570
|
|
|
{ |
|
571
|
|
|
$targets = array(); |
|
572
|
|
|
while (true) { |
|
573
|
|
|
$targets[] = $this->parseExpression(); |
|
574
|
|
|
if (!$this->parser->getStream()->nextIf(Twig_Token::PUNCTUATION_TYPE, ',')) { |
|
575
|
|
|
break; |
|
576
|
|
|
} |
|
577
|
|
|
} |
|
578
|
|
|
|
|
579
|
|
|
return new Twig_Node($targets); |
|
580
|
|
|
} |
|
581
|
|
|
|
|
582
|
|
|
private function parseNotTestExpression(Twig_Node $node) |
|
583
|
|
|
{ |
|
584
|
|
|
return new Twig_Node_Expression_Unary_Not($this->parseTestExpression($node), $this->parser->getCurrentToken()->getLine()); |
|
585
|
|
|
} |
|
586
|
|
|
|
|
587
|
|
|
private function parseTestExpression(Twig_Node $node) |
|
588
|
|
|
{ |
|
589
|
|
|
$stream = $this->parser->getStream(); |
|
590
|
|
|
list($name, $test) = $this->getTest($node->getTemplateLine()); |
|
591
|
|
|
|
|
592
|
|
|
$class = $this->getTestNodeClass($test); |
|
593
|
|
|
$arguments = null; |
|
594
|
|
|
if ($stream->test(Twig_Token::PUNCTUATION_TYPE, '(')) { |
|
595
|
|
|
$arguments = $this->parser->getExpressionParser()->parseArguments(true); |
|
596
|
|
|
} |
|
597
|
|
|
|
|
598
|
|
|
return new $class($node, $name, $arguments, $this->parser->getCurrentToken()->getLine()); |
|
599
|
|
|
} |
|
600
|
|
|
|
|
601
|
|
|
private function getTest($line) |
|
602
|
|
|
{ |
|
603
|
|
|
$stream = $this->parser->getStream(); |
|
604
|
|
|
$name = $stream->expect(Twig_Token::NAME_TYPE)->getValue(); |
|
605
|
|
|
|
|
606
|
|
|
if ($test = $this->env->getTest($name)) { |
|
607
|
|
|
return array($name, $test); |
|
608
|
|
|
} |
|
609
|
|
|
|
|
610
|
|
|
if ($stream->test(Twig_Token::NAME_TYPE)) { |
|
611
|
|
|
// try 2-words tests |
|
612
|
|
|
$name = $name.' '.$this->parser->getCurrentToken()->getValue(); |
|
613
|
|
|
|
|
614
|
|
|
if ($test = $this->env->getTest($name)) { |
|
615
|
|
|
$stream->next(); |
|
616
|
|
|
|
|
617
|
|
|
return array($name, $test); |
|
618
|
|
|
} |
|
619
|
|
|
} |
|
620
|
|
|
|
|
621
|
|
|
$e = new Twig_Error_Syntax(sprintf('Unknown "%s" test.', $name), $line, $stream->getSourceContext()); |
|
622
|
|
|
$e->addSuggestions($name, array_keys($this->env->getTests())); |
|
623
|
|
|
|
|
624
|
|
|
throw $e; |
|
625
|
|
|
} |
|
626
|
|
|
|
|
627
|
|
|
private function getTestNodeClass($test) |
|
628
|
|
|
{ |
|
629
|
|
|
if ($test->isDeprecated()) { |
|
630
|
|
|
$stream = $this->parser->getStream(); |
|
631
|
|
|
$message = sprintf('Twig Test "%s" is deprecated', $test->getName()); |
|
632
|
|
|
|
|
633
|
|
|
if (!is_bool($test->getDeprecatedVersion())) { |
|
634
|
|
|
$message .= sprintf(' since version %s', $test->getDeprecatedVersion()); |
|
635
|
|
|
} |
|
636
|
|
|
if ($test->getAlternative()) { |
|
637
|
|
|
$message .= sprintf('. Use "%s" instead', $test->getAlternative()); |
|
638
|
|
|
} |
|
639
|
|
|
$src = $stream->getSourceContext(); |
|
640
|
|
|
$message .= sprintf(' in %s at line %d.', $src->getPath() ?: $src->getName(), $stream->getCurrent()->getLine()); |
|
641
|
|
|
|
|
642
|
|
|
@trigger_error($message, E_USER_DEPRECATED); |
|
643
|
|
|
} |
|
644
|
|
|
|
|
645
|
|
|
return $test->getNodeClass(); |
|
646
|
|
|
} |
|
647
|
|
|
|
|
648
|
|
|
private function getFunctionNodeClass($name, $line) |
|
649
|
|
|
{ |
|
650
|
|
|
if (false === $function = $this->env->getFunction($name)) { |
|
651
|
|
|
$e = new Twig_Error_Syntax(sprintf('Unknown "%s" function.', $name), $line, $this->parser->getStream()->getSourceContext()); |
|
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(), $line); |
|
667
|
|
|
|
|
668
|
|
|
@trigger_error($message, E_USER_DEPRECATED); |
|
669
|
|
|
} |
|
670
|
|
|
|
|
671
|
|
|
return $function->getNodeClass(); |
|
672
|
|
|
} |
|
673
|
|
|
|
|
674
|
|
|
private function getFilterNodeClass($name, $line) |
|
675
|
|
|
{ |
|
676
|
|
|
if (false === $filter = $this->env->getFilter($name)) { |
|
677
|
|
|
$e = new Twig_Error_Syntax(sprintf('Unknown "%s" filter.', $name), $line, $this->parser->getStream()->getSourceContext()); |
|
678
|
|
|
$e->addSuggestions($name, array_keys($this->env->getFilters())); |
|
679
|
|
|
|
|
680
|
|
|
throw $e; |
|
681
|
|
|
} |
|
682
|
|
|
|
|
683
|
|
|
if ($filter->isDeprecated()) { |
|
684
|
|
|
$message = sprintf('Twig Filter "%s" is deprecated', $filter->getName()); |
|
685
|
|
|
if (!is_bool($filter->getDeprecatedVersion())) { |
|
686
|
|
|
$message .= sprintf(' since version %s', $filter->getDeprecatedVersion()); |
|
687
|
|
|
} |
|
688
|
|
|
if ($filter->getAlternative()) { |
|
689
|
|
|
$message .= sprintf('. Use "%s" instead', $filter->getAlternative()); |
|
690
|
|
|
} |
|
691
|
|
|
$src = $this->parser->getStream()->getSourceContext(); |
|
692
|
|
|
$message .= sprintf(' in %s at line %d.', $src->getPath() ?: $src->getName(), $line); |
|
693
|
|
|
|
|
694
|
|
|
@trigger_error($message, E_USER_DEPRECATED); |
|
695
|
|
|
} |
|
696
|
|
|
|
|
697
|
|
|
return $filter->getNodeClass(); |
|
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 || $node instanceof Twig_Node_Expression_Unary_Pos |
|
705
|
|
|
)) { |
|
706
|
|
|
return false; |
|
707
|
|
|
} |
|
708
|
|
|
|
|
709
|
|
|
foreach ($node as $n) { |
|
710
|
|
|
if (!$this->checkConstantExpression($n)) { |
|
711
|
|
|
return false; |
|
712
|
|
|
} |
|
713
|
|
|
} |
|
714
|
|
|
|
|
715
|
|
|
return true; |
|
716
|
|
|
} |
|
717
|
|
|
} |
|
718
|
|
|
|
|
719
|
|
|
class_alias('Twig_ExpressionParser', 'Twig\ExpressionParser', false); |
|
720
|
|
|
|
JuKu /
JuKuCMS
Loading history...