--- /dev/null
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) Fabien Potencier
+ * (c) Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Parses expressions.
+ *
+ * This parser implements a "Precedence climbing" algorithm.
+ *
+ * @see http://www.engr.mun.ca/~theo/Misc/exp_parsing.htm
+ * @see http://en.wikipedia.org/wiki/Operator-precedence_parser
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ *
+ * @internal
+ */
+class Twig_ExpressionParser
+{
+ const OPERATOR_LEFT = 1;
+ const OPERATOR_RIGHT = 2;
+
+ protected $parser;
+ protected $unaryOperators;
+ protected $binaryOperators;
+
+ private $env;
+
+ public function __construct(Twig_Parser $parser, $env = null)
+ {
+ $this->parser = $parser;
+
+ if ($env instanceof Twig_Environment) {
+ $this->env = $env;
+ $this->unaryOperators = $env->getUnaryOperators();
+ $this->binaryOperators = $env->getBinaryOperators();
+ } else {
+ @trigger_error('Passing the operators as constructor arguments to '.__METHOD__.' is deprecated since version 1.27. Pass the environment instead.', E_USER_DEPRECATED);
+
+ $this->env = $parser->getEnvironment();
+ $this->unaryOperators = func_get_arg(1);
+ $this->binaryOperators = func_get_arg(2);
+ }
+ }
+
+ public function parseExpression($precedence = 0)
+ {
+ $expr = $this->getPrimary();
+ $token = $this->parser->getCurrentToken();
+ while ($this->isBinary($token) && $this->binaryOperators[$token->getValue()]['precedence'] >= $precedence) {
+ $op = $this->binaryOperators[$token->getValue()];
+ $this->parser->getStream()->next();
+
+ if ('is not' === $token->getValue()) {
+ $expr = $this->parseNotTestExpression($expr);
+ } elseif ('is' === $token->getValue()) {
+ $expr = $this->parseTestExpression($expr);
+ } elseif (isset($op['callable'])) {
+ $expr = call_user_func($op['callable'], $this->parser, $expr);
+ } else {
+ $expr1 = $this->parseExpression(self::OPERATOR_LEFT === $op['associativity'] ? $op['precedence'] + 1 : $op['precedence']);
+ $class = $op['class'];
+ $expr = new $class($expr, $expr1, $token->getLine());
+ }
+
+ $token = $this->parser->getCurrentToken();
+ }
+
+ if (0 === $precedence) {
+ return $this->parseConditionalExpression($expr);
+ }
+
+ return $expr;
+ }
+
+ protected function getPrimary()
+ {
+ $token = $this->parser->getCurrentToken();
+
+ if ($this->isUnary($token)) {
+ $operator = $this->unaryOperators[$token->getValue()];
+ $this->parser->getStream()->next();
+ $expr = $this->parseExpression($operator['precedence']);
+ $class = $operator['class'];
+
+ return $this->parsePostfixExpression(new $class($expr, $token->getLine()));
+ } elseif ($token->test(Twig_Token::PUNCTUATION_TYPE, '(')) {
+ $this->parser->getStream()->next();
+ $expr = $this->parseExpression();
+ $this->parser->getStream()->expect(Twig_Token::PUNCTUATION_TYPE, ')', 'An opened parenthesis is not properly closed');
+
+ return $this->parsePostfixExpression($expr);
+ }
+
+ return $this->parsePrimaryExpression();
+ }
+
+ protected function parseConditionalExpression($expr)
+ {
+ while ($this->parser->getStream()->nextIf(Twig_Token::PUNCTUATION_TYPE, '?')) {
+ if (!$this->parser->getStream()->nextIf(Twig_Token::PUNCTUATION_TYPE, ':')) {
+ $expr2 = $this->parseExpression();
+ if ($this->parser->getStream()->nextIf(Twig_Token::PUNCTUATION_TYPE, ':')) {
+ $expr3 = $this->parseExpression();
+ } else {
+ $expr3 = new Twig_Node_Expression_Constant('', $this->parser->getCurrentToken()->getLine());
+ }
+ } else {
+ $expr2 = $expr;
+ $expr3 = $this->parseExpression();
+ }
+
+ $expr = new Twig_Node_Expression_Conditional($expr, $expr2, $expr3, $this->parser->getCurrentToken()->getLine());
+ }
+
+ return $expr;
+ }
+
+ protected function isUnary(Twig_Token $token)
+ {
+ return $token->test(Twig_Token::OPERATOR_TYPE) && isset($this->unaryOperators[$token->getValue()]);
+ }
+
+ protected function isBinary(Twig_Token $token)
+ {
+ return $token->test(Twig_Token::OPERATOR_TYPE) && isset($this->binaryOperators[$token->getValue()]);
+ }
+
+ public function parsePrimaryExpression()
+ {
+ $token = $this->parser->getCurrentToken();
+ switch ($token->getType()) {
+ case Twig_Token::NAME_TYPE:
+ $this->parser->getStream()->next();
+ switch ($token->getValue()) {
+ case 'true':
+ case 'TRUE':
+ $node = new Twig_Node_Expression_Constant(true, $token->getLine());
+ break;
+
+ case 'false':
+ case 'FALSE':
+ $node = new Twig_Node_Expression_Constant(false, $token->getLine());
+ break;
+
+ case 'none':
+ case 'NONE':
+ case 'null':
+ case 'NULL':
+ $node = new Twig_Node_Expression_Constant(null, $token->getLine());
+ break;
+
+ default:
+ if ('(' === $this->parser->getCurrentToken()->getValue()) {
+ $node = $this->getFunctionNode($token->getValue(), $token->getLine());
+ } else {
+ $node = new Twig_Node_Expression_Name($token->getValue(), $token->getLine());
+ }
+ }
+ break;
+
+ case Twig_Token::NUMBER_TYPE:
+ $this->parser->getStream()->next();
+ $node = new Twig_Node_Expression_Constant($token->getValue(), $token->getLine());
+ break;
+
+ case Twig_Token::STRING_TYPE:
+ case Twig_Token::INTERPOLATION_START_TYPE:
+ $node = $this->parseStringExpression();
+ break;
+
+ case Twig_Token::OPERATOR_TYPE:
+ if (preg_match(Twig_Lexer::REGEX_NAME, $token->getValue(), $matches) && $matches[0] == $token->getValue()) {
+ // in this context, string operators are variable names
+ $this->parser->getStream()->next();
+ $node = new Twig_Node_Expression_Name($token->getValue(), $token->getLine());
+ break;
+ } elseif (isset($this->unaryOperators[$token->getValue()])) {
+ $class = $this->unaryOperators[$token->getValue()]['class'];
+
+ $ref = new ReflectionClass($class);
+ $negClass = 'Twig_Node_Expression_Unary_Neg';
+ $posClass = 'Twig_Node_Expression_Unary_Pos';
+ if (!(in_array($ref->getName(), array($negClass, $posClass)) || $ref->isSubclassOf($negClass) || $ref->isSubclassOf($posClass))) {
+ throw new Twig_Error_Syntax(sprintf('Unexpected unary operator "%s".', $token->getValue()), $token->getLine(), $this->parser->getStream()->getSourceContext());
+ }
+
+ $this->parser->getStream()->next();
+ $expr = $this->parsePrimaryExpression();
+
+ $node = new $class($expr, $token->getLine());
+ break;
+ }
+
+ default:
+ if ($token->test(Twig_Token::PUNCTUATION_TYPE, '[')) {
+ $node = $this->parseArrayExpression();
+ } elseif ($token->test(Twig_Token::PUNCTUATION_TYPE, '{')) {
+ $node = $this->parseHashExpression();
+ } else {
+ throw new Twig_Error_Syntax(sprintf('Unexpected token "%s" of value "%s".', Twig_Token::typeToEnglish($token->getType()), $token->getValue()), $token->getLine(), $this->parser->getStream()->getSourceContext());
+ }
+ }
+
+ return $this->parsePostfixExpression($node);
+ }
+
+ public function parseStringExpression()
+ {
+ $stream = $this->parser->getStream();
+
+ $nodes = array();
+ // a string cannot be followed by another string in a single expression
+ $nextCanBeString = true;
+ while (true) {
+ if ($nextCanBeString && $token = $stream->nextIf(Twig_Token::STRING_TYPE)) {
+ $nodes[] = new Twig_Node_Expression_Constant($token->getValue(), $token->getLine());
+ $nextCanBeString = false;
+ } elseif ($stream->nextIf(Twig_Token::INTERPOLATION_START_TYPE)) {
+ $nodes[] = $this->parseExpression();
+ $stream->expect(Twig_Token::INTERPOLATION_END_TYPE);
+ $nextCanBeString = true;
+ } else {
+ break;
+ }
+ }
+
+ $expr = array_shift($nodes);
+ foreach ($nodes as $node) {
+ $expr = new Twig_Node_Expression_Binary_Concat($expr, $node, $node->getTemplateLine());
+ }
+
+ return $expr;
+ }
+
+ public function parseArrayExpression()
+ {
+ $stream = $this->parser->getStream();
+ $stream->expect(Twig_Token::PUNCTUATION_TYPE, '[', 'An array element was expected');
+
+ $node = new Twig_Node_Expression_Array(array(), $stream->getCurrent()->getLine());
+ $first = true;
+ while (!$stream->test(Twig_Token::PUNCTUATION_TYPE, ']')) {
+ if (!$first) {
+ $stream->expect(Twig_Token::PUNCTUATION_TYPE, ',', 'An array element must be followed by a comma');
+
+ // trailing ,?
+ if ($stream->test(Twig_Token::PUNCTUATION_TYPE, ']')) {
+ break;
+ }
+ }
+ $first = false;
+
+ $node->addElement($this->parseExpression());
+ }
+ $stream->expect(Twig_Token::PUNCTUATION_TYPE, ']', 'An opened array is not properly closed');
+
+ return $node;
+ }
+
+ public function parseHashExpression()
+ {
+ $stream = $this->parser->getStream();
+ $stream->expect(Twig_Token::PUNCTUATION_TYPE, '{', 'A hash element was expected');
+
+ $node = new Twig_Node_Expression_Array(array(), $stream->getCurrent()->getLine());
+ $first = true;
+ while (!$stream->test(Twig_Token::PUNCTUATION_TYPE, '}')) {
+ if (!$first) {
+ $stream->expect(Twig_Token::PUNCTUATION_TYPE, ',', 'A hash value must be followed by a comma');
+
+ // trailing ,?
+ if ($stream->test(Twig_Token::PUNCTUATION_TYPE, '}')) {
+ break;
+ }
+ }
+ $first = false;
+
+ // a hash key can be:
+ //
+ // * a number -- 12
+ // * a string -- 'a'
+ // * a name, which is equivalent to a string -- a
+ // * an expression, which must be enclosed in parentheses -- (1 + 2)
+ if (($token = $stream->nextIf(Twig_Token::STRING_TYPE)) || ($token = $stream->nextIf(Twig_Token::NAME_TYPE)) || $token = $stream->nextIf(Twig_Token::NUMBER_TYPE)) {
+ $key = new Twig_Node_Expression_Constant($token->getValue(), $token->getLine());
+ } elseif ($stream->test(Twig_Token::PUNCTUATION_TYPE, '(')) {
+ $key = $this->parseExpression();
+ } else {
+ $current = $stream->getCurrent();
+
+ throw new Twig_Error_Syntax(sprintf('A hash key must be a quoted string, a number, a name, or an expression enclosed in parentheses (unexpected token "%s" of value "%s".', Twig_Token::typeToEnglish($current->getType()), $current->getValue()), $current->getLine(), $stream->getSourceContext());
+ }
+
+ $stream->expect(Twig_Token::PUNCTUATION_TYPE, ':', 'A hash key must be followed by a colon (:)');
+ $value = $this->parseExpression();
+
+ $node->addElement($value, $key);
+ }
+ $stream->expect(Twig_Token::PUNCTUATION_TYPE, '}', 'An opened hash is not properly closed');
+
+ return $node;
+ }
+
+ public function parsePostfixExpression($node)
+ {
+ while (true) {
+ $token = $this->parser->getCurrentToken();
+ if ($token->getType() == Twig_Token::PUNCTUATION_TYPE) {
+ if ('.' == $token->getValue() || '[' == $token->getValue()) {
+ $node = $this->parseSubscriptExpression($node);
+ } elseif ('|' == $token->getValue()) {
+ $node = $this->parseFilterExpression($node);
+ } else {
+ break;
+ }
+ } else {
+ break;
+ }
+ }
+
+ return $node;
+ }
+
+ public function getFunctionNode($name, $line)
+ {
+ switch ($name) {
+ case 'parent':
+ $this->parseArguments();
+ if (!count($this->parser->getBlockStack())) {
+ throw new Twig_Error_Syntax('Calling "parent" outside a block is forbidden.', $line, $this->parser->getStream()->getSourceContext());
+ }
+
+ if (!$this->parser->getParent() && !$this->parser->hasTraits()) {
+ throw new Twig_Error_Syntax('Calling "parent" on a template that does not extend nor "use" another template is forbidden.', $line, $this->parser->getStream()->getSourceContext());
+ }
+
+ return new Twig_Node_Expression_Parent($this->parser->peekBlockStack(), $line);
+ case 'block':
+ $args = $this->parseArguments();
+ if (count($args) < 1) {
+ throw new Twig_Error_Syntax('The "block" function takes one argument (the block name).', $line, $this->parser->getStream()->getSourceContext());
+ }
+
+ return new Twig_Node_Expression_BlockReference($args->getNode(0), count($args) > 1 ? $args->getNode(1) : null, $line);
+ case 'attribute':
+ $args = $this->parseArguments();
+ if (count($args) < 2) {
+ throw new Twig_Error_Syntax('The "attribute" function takes at least two arguments (the variable and the attributes).', $line, $this->parser->getStream()->getSourceContext());
+ }
+
+ return new Twig_Node_Expression_GetAttr($args->getNode(0), $args->getNode(1), count($args) > 2 ? $args->getNode(2) : null, Twig_Template::ANY_CALL, $line);
+ default:
+ if (null !== $alias = $this->parser->getImportedSymbol('function', $name)) {
+ $arguments = new Twig_Node_Expression_Array(array(), $line);
+ foreach ($this->parseArguments() as $n) {
+ $arguments->addElement($n);
+ }
+
+ $node = new Twig_Node_Expression_MethodCall($alias['node'], $alias['name'], $arguments, $line);
+ $node->setAttribute('safe', true);
+
+ return $node;
+ }
+
+ $args = $this->parseArguments(true);
+ $class = $this->getFunctionNodeClass($name, $line);
+
+ return new $class($name, $args, $line);
+ }
+ }
+
+ public function parseSubscriptExpression($node)
+ {
+ $stream = $this->parser->getStream();
+ $token = $stream->next();
+ $lineno = $token->getLine();
+ $arguments = new Twig_Node_Expression_Array(array(), $lineno);
+ $type = Twig_Template::ANY_CALL;
+ if ($token->getValue() == '.') {
+ $token = $stream->next();
+ if (
+ $token->getType() == Twig_Token::NAME_TYPE
+ ||
+ $token->getType() == Twig_Token::NUMBER_TYPE
+ ||
+ ($token->getType() == Twig_Token::OPERATOR_TYPE && preg_match(Twig_Lexer::REGEX_NAME, $token->getValue()))
+ ) {
+ $arg = new Twig_Node_Expression_Constant($token->getValue(), $lineno);
+
+ if ($stream->test(Twig_Token::PUNCTUATION_TYPE, '(')) {
+ $type = Twig_Template::METHOD_CALL;
+ foreach ($this->parseArguments() as $n) {
+ $arguments->addElement($n);
+ }
+ }
+ } else {
+ throw new Twig_Error_Syntax('Expected name or number.', $lineno, $stream->getSourceContext());
+ }
+
+ if ($node instanceof Twig_Node_Expression_Name && null !== $this->parser->getImportedSymbol('template', $node->getAttribute('name'))) {
+ if (!$arg instanceof Twig_Node_Expression_Constant) {
+ throw new Twig_Error_Syntax(sprintf('Dynamic macro names are not supported (called on "%s").', $node->getAttribute('name')), $token->getLine(), $stream->getSourceContext());
+ }
+
+ $name = $arg->getAttribute('value');
+
+ if ($this->parser->isReservedMacroName($name)) {
+ throw new Twig_Error_Syntax(sprintf('"%s" cannot be called as macro as it is a reserved keyword.', $name), $token->getLine(), $stream->getSourceContext());
+ }
+
+ $node = new Twig_Node_Expression_MethodCall($node, 'get'.$name, $arguments, $lineno);
+ $node->setAttribute('safe', true);
+
+ return $node;
+ }
+ } else {
+ $type = Twig_Template::ARRAY_CALL;
+
+ // slice?
+ $slice = false;
+ if ($stream->test(Twig_Token::PUNCTUATION_TYPE, ':')) {
+ $slice = true;
+ $arg = new Twig_Node_Expression_Constant(0, $token->getLine());
+ } else {
+ $arg = $this->parseExpression();
+ }
+
+ if ($stream->nextIf(Twig_Token::PUNCTUATION_TYPE, ':')) {
+ $slice = true;
+ }
+
+ if ($slice) {
+ if ($stream->test(Twig_Token::PUNCTUATION_TYPE, ']')) {
+ $length = new Twig_Node_Expression_Constant(null, $token->getLine());
+ } else {
+ $length = $this->parseExpression();
+ }
+
+ $class = $this->getFilterNodeClass('slice', $token->getLine());
+ $arguments = new Twig_Node(array($arg, $length));
+ $filter = new $class($node, new Twig_Node_Expression_Constant('slice', $token->getLine()), $arguments, $token->getLine());
+
+ $stream->expect(Twig_Token::PUNCTUATION_TYPE, ']');
+
+ return $filter;
+ }
+
+ $stream->expect(Twig_Token::PUNCTUATION_TYPE, ']');
+ }
+
+ return new Twig_Node_Expression_GetAttr($node, $arg, $arguments, $type, $lineno);
+ }
+
+ public function parseFilterExpression($node)
+ {
+ $this->parser->getStream()->next();
+
+ return $this->parseFilterExpressionRaw($node);
+ }
+
+ public function parseFilterExpressionRaw($node, $tag = null)
+ {
+ while (true) {
+ $token = $this->parser->getStream()->expect(Twig_Token::NAME_TYPE);
+
+ $name = new Twig_Node_Expression_Constant($token->getValue(), $token->getLine());
+ if (!$this->parser->getStream()->test(Twig_Token::PUNCTUATION_TYPE, '(')) {
+ $arguments = new Twig_Node();
+ } else {
+ $arguments = $this->parseArguments(true);
+ }
+
+ $class = $this->getFilterNodeClass($name->getAttribute('value'), $token->getLine());
+
+ $node = new $class($node, $name, $arguments, $token->getLine(), $tag);
+
+ if (!$this->parser->getStream()->test(Twig_Token::PUNCTUATION_TYPE, '|')) {
+ break;
+ }
+
+ $this->parser->getStream()->next();
+ }
+
+ return $node;
+ }
+
+ /**
+ * Parses arguments.
+ *
+ * @param bool $namedArguments Whether to allow named arguments or not
+ * @param bool $definition Whether we are parsing arguments for a function definition
+ *
+ * @return Twig_Node
+ *
+ * @throws Twig_Error_Syntax
+ */
+ public function parseArguments($namedArguments = false, $definition = false)
+ {
+ $args = array();
+ $stream = $this->parser->getStream();
+
+ $stream->expect(Twig_Token::PUNCTUATION_TYPE, '(', 'A list of arguments must begin with an opening parenthesis');
+ while (!$stream->test(Twig_Token::PUNCTUATION_TYPE, ')')) {
+ if (!empty($args)) {
+ $stream->expect(Twig_Token::PUNCTUATION_TYPE, ',', 'Arguments must be separated by a comma');
+ }
+
+ if ($definition) {
+ $token = $stream->expect(Twig_Token::NAME_TYPE, null, 'An argument must be a name');
+ $value = new Twig_Node_Expression_Name($token->getValue(), $this->parser->getCurrentToken()->getLine());
+ } else {
+ $value = $this->parseExpression();
+ }
+
+ $name = null;
+ if ($namedArguments && $token = $stream->nextIf(Twig_Token::OPERATOR_TYPE, '=')) {
+ if (!$value instanceof Twig_Node_Expression_Name) {
+ throw new Twig_Error_Syntax(sprintf('A parameter name must be a string, "%s" given.', get_class($value)), $token->getLine(), $stream->getSourceContext());
+ }
+ $name = $value->getAttribute('name');
+
+ if ($definition) {
+ $value = $this->parsePrimaryExpression();
+
+ if (!$this->checkConstantExpression($value)) {
+ 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());
+ }
+ } else {
+ $value = $this->parseExpression();
+ }
+ }
+
+ if ($definition) {
+ if (null === $name) {
+ $name = $value->getAttribute('name');
+ $value = new Twig_Node_Expression_Constant(null, $this->parser->getCurrentToken()->getLine());
+ }
+ $args[$name] = $value;
+ } else {
+ if (null === $name) {
+ $args[] = $value;
+ } else {
+ $args[$name] = $value;
+ }
+ }
+ }
+ $stream->expect(Twig_Token::PUNCTUATION_TYPE, ')', 'A list of arguments must be closed by a parenthesis');
+
+ return new Twig_Node($args);
+ }
+
+ public function parseAssignmentExpression()
+ {
+ $stream = $this->parser->getStream();
+ $targets = array();
+ while (true) {
+ $token = $stream->expect(Twig_Token::NAME_TYPE, null, 'Only variables can be assigned to');
+ $value = $token->getValue();
+ if (in_array(strtolower($value), array('true', 'false', 'none', 'null'))) {
+ throw new Twig_Error_Syntax(sprintf('You cannot assign a value to "%s".', $value), $token->getLine(), $stream->getSourceContext());
+ }
+ $targets[] = new Twig_Node_Expression_AssignName($value, $token->getLine());
+
+ if (!$stream->nextIf(Twig_Token::PUNCTUATION_TYPE, ',')) {
+ break;
+ }
+ }
+
+ return new Twig_Node($targets);
+ }
+
+ public function parseMultitargetExpression()
+ {
+ $targets = array();
+ while (true) {
+ $targets[] = $this->parseExpression();
+ if (!$this->parser->getStream()->nextIf(Twig_Token::PUNCTUATION_TYPE, ',')) {
+ break;
+ }
+ }
+
+ return new Twig_Node($targets);
+ }
+
+ private function parseNotTestExpression(Twig_NodeInterface $node)
+ {
+ return new Twig_Node_Expression_Unary_Not($this->parseTestExpression($node), $this->parser->getCurrentToken()->getLine());
+ }
+
+ private function parseTestExpression(Twig_NodeInterface $node)
+ {
+ $stream = $this->parser->getStream();
+ list($name, $test) = $this->getTest($node->getTemplateLine());
+
+ $class = $this->getTestNodeClass($test);
+ $arguments = null;
+ if ($stream->test(Twig_Token::PUNCTUATION_TYPE, '(')) {
+ $arguments = $this->parser->getExpressionParser()->parseArguments(true);
+ }
+
+ return new $class($node, $name, $arguments, $this->parser->getCurrentToken()->getLine());
+ }
+
+ private function getTest($line)
+ {
+ $stream = $this->parser->getStream();
+ $name = $stream->expect(Twig_Token::NAME_TYPE)->getValue();
+
+ if ($test = $this->env->getTest($name)) {
+ return array($name, $test);
+ }
+
+ if ($stream->test(Twig_Token::NAME_TYPE)) {
+ // try 2-words tests
+ $name = $name.' '.$this->parser->getCurrentToken()->getValue();
+
+ if ($test = $this->env->getTest($name)) {
+ $stream->next();
+
+ return array($name, $test);
+ }
+ }
+
+ $e = new Twig_Error_Syntax(sprintf('Unknown "%s" test.', $name), $line, $stream->getSourceContext());
+ $e->addSuggestions($name, array_keys($this->env->getTests()));
+
+ throw $e;
+ }
+
+ private function getTestNodeClass($test)
+ {
+ if ($test instanceof Twig_SimpleTest && $test->isDeprecated()) {
+ $stream = $this->parser->getStream();
+ $message = sprintf('Twig Test "%s" is deprecated', $test->getName());
+ if (!is_bool($test->getDeprecatedVersion())) {
+ $message .= sprintf(' since version %s', $test->getDeprecatedVersion());
+ }
+ if ($test->getAlternative()) {
+ $message .= sprintf('. Use "%s" instead', $test->getAlternative());
+ }
+ $src = $stream->getSourceContext();
+ $message .= sprintf(' in %s at line %d.', $src->getPath() ? $src->getPath() : $src->getName(), $stream->getCurrent()->getLine());
+
+ @trigger_error($message, E_USER_DEPRECATED);
+ }
+
+ if ($test instanceof Twig_SimpleTest) {
+ return $test->getNodeClass();
+ }
+
+ return $test instanceof Twig_Test_Node ? $test->getClass() : 'Twig_Node_Expression_Test';
+ }
+
+ protected function getFunctionNodeClass($name, $line)
+ {
+ if (false === $function = $this->env->getFunction($name)) {
+ $e = new Twig_Error_Syntax(sprintf('Unknown "%s" function.', $name), $line, $this->parser->getStream()->getSourceContext());
+ $e->addSuggestions($name, array_keys($this->env->getFunctions()));
+
+ throw $e;
+ }
+
+ if ($function instanceof Twig_SimpleFunction && $function->isDeprecated()) {
+ $message = sprintf('Twig Function "%s" is deprecated', $function->getName());
+ if (!is_bool($function->getDeprecatedVersion())) {
+ $message .= sprintf(' since version %s', $function->getDeprecatedVersion());
+ }
+ if ($function->getAlternative()) {
+ $message .= sprintf('. Use "%s" instead', $function->getAlternative());
+ }
+ $src = $this->parser->getStream()->getSourceContext();
+ $message .= sprintf(' in %s at line %d.', $src->getPath() ? $src->getPath() : $src->getName(), $line);
+
+ @trigger_error($message, E_USER_DEPRECATED);
+ }
+
+ if ($function instanceof Twig_SimpleFunction) {
+ return $function->getNodeClass();
+ }
+
+ return $function instanceof Twig_Function_Node ? $function->getClass() : 'Twig_Node_Expression_Function';
+ }
+
+ protected function getFilterNodeClass($name, $line)
+ {
+ if (false === $filter = $this->env->getFilter($name)) {
+ $e = new Twig_Error_Syntax(sprintf('Unknown "%s" filter.', $name), $line, $this->parser->getStream()->getSourceContext());
+ $e->addSuggestions($name, array_keys($this->env->getFilters()));
+
+ throw $e;
+ }
+
+ if ($filter instanceof Twig_SimpleFilter && $filter->isDeprecated()) {
+ $message = sprintf('Twig Filter "%s" is deprecated', $filter->getName());
+ if (!is_bool($filter->getDeprecatedVersion())) {
+ $message .= sprintf(' since version %s', $filter->getDeprecatedVersion());
+ }
+ if ($filter->getAlternative()) {
+ $message .= sprintf('. Use "%s" instead', $filter->getAlternative());
+ }
+ $src = $this->parser->getStream()->getSourceContext();
+ $message .= sprintf(' in %s at line %d.', $src->getPath() ? $src->getPath() : $src->getName(), $line);
+
+ @trigger_error($message, E_USER_DEPRECATED);
+ }
+
+ if ($filter instanceof Twig_SimpleFilter) {
+ return $filter->getNodeClass();
+ }
+
+ return $filter instanceof Twig_Filter_Node ? $filter->getClass() : 'Twig_Node_Expression_Filter';
+ }
+
+ // checks that the node only contains "constant" elements
+ protected function checkConstantExpression(Twig_NodeInterface $node)
+ {
+ if (!($node instanceof Twig_Node_Expression_Constant || $node instanceof Twig_Node_Expression_Array
+ || $node instanceof Twig_Node_Expression_Unary_Neg || $node instanceof Twig_Node_Expression_Unary_Pos
+ )) {
+ return false;
+ }
+
+ foreach ($node as $n) {
+ if (!$this->checkConstantExpression($n)) {
+ return false;
+ }
+ }
+
+ return true;
+ }
+}
projects / yaffs-website / blobdiff