public function getFunctionNode($name, $line)
{
$args = $this->parseArguments();
switch ($name) {
case 'parent':
if (!count($this->parser->getBlockStack())) {
throw new Twig_Error_Syntax('Calling "parent" outside a block is forbidden', $line);
}
if (!$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', $line);
}
return new Twig_Node_Expression_Parent($this->parser->peekBlockStack(), $line);
case 'block':
return new Twig_Node_Expression_BlockReference($args->getNode(0), false, $line);
case 'attribute':
if (count($args) < 2) {
throw new Twig_Error_Syntax('The "attribute" function takes at least two arguments (the variable and the attributes)', $line);
}
return new Twig_Node_Expression_GetAttr($args->getNode(0), $args->getNode(1), count($args) > 2 ? $args->getNode(2) : new Twig_Node_Expression_Array(array(), $line), Twig_TemplateInterface::ANY_CALL, $line);
default:
if (null !== ($alias = $this->parser->getImportedFunction($name))) {
$arguments = new Twig_Node_Expression_Array(array(), $line);
foreach ($args as $n) {
$arguments->addElement($n);
}
$node = new Twig_Node_Expression_MethodCall($alias['node'], $alias['name'], $arguments, $line);
$node->setAttribute('safe', true);
return $node;
}
$class = $this->getFunctionNodeClass($name);
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, '(')) {
$type = Twig_TemplateInterface::METHOD_CALL;
foreach ($this->parseArguments() as $n) {
$arguments->addElement($n);
}
}
} else {
throw new Twig_Error_Syntax('Expected name or number', $lineno, $this->parser->getFilename());
}
if ($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(), $this->parser->getFilename());
}
$node = new Twig_Node_Expression_MethodCall($node, 'get' . $arg->getAttribute('value'), $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, $lineno);
}
public function parseSubscriptExpression($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, $this->parser->getFilename());
}
if ($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(), $this->parser->getFilename());
}
$name = $arg->getAttribute('value');
$node = new Twig_Node_Expression_MethodCall($node, 'macro_' . $name, $arguments, $lineno);
$node->setAttribute('safe', true);
return $node;
}
if ($node instanceof Twig_Node_Expression_Name && null !== ($symbol = $this->parser->getImportedSymbol('types', $node->getAttribute('name'))) && false === $this->parser->getEnvironment()->hasExtension('sandbox')) {
$class = $symbol['name'];
if (0 === strcasecmp($class, 'array')) {
$type = Twig_Template::ARRAY_CALL;
return new Twig_Node_Expression_GetAttr($node, $arg, $arguments, $type, $lineno);
}
if (!class_exists($class)) {
throw new Twig_Error_Syntax(sprintf('Class "%s" set for %s was not found.', $class, $node->getAttribute('name')), $token->getLine(), $this->parser->getFilename());
}
$name = $arg->getAttribute('value');
if (Twig_Template::METHOD_CALL !== $type) {
$vars = get_class_vars($class);
if (isset($vars[$name])) {
if ($this->parser->getEnvironment()->hasExtension('sandbox')) {
$this->parser->getEnvironment()->getExtension('sandbox')->checkPropertyAllowed($class, $name);
}
return new Twig_Node_Expression_GetProperty($node, $name, $lineno);
}
}
$methods = array_change_key_case(array_flip(get_class_methods($class)));
$lcItem = strtolower($name);
if (isset($methods[$lcItem])) {
$method = (string) $name;
} elseif (isset($methods['get' . $lcItem])) {
$method = 'get' . $name;
} elseif (isset($methods['is' . $lcItem])) {
$method = 'is' . $name;
} elseif (isset($methods['__call'])) {
$method = (string) $name;
}
if (isset($method)) {
return new Twig_Node_Expression_MethodCall($node, $method, $arguments, $lineno);
}
}
} 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);
}
