<?php /* * This file is part of Twig. * * (c) 2012 Fabien Potencier * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ abstract class Twig_Node_Expression_Call extends Twig_Node_Expression { protected function compileCallable(Twig_Compiler $compiler) { $callable = $this->getAttribute('callable'); $closingParenthesis = false; if ($callable) { if (is_string($callable)) { $compiler->raw($callable); } elseif (is_array($callable) && $callable[0] instanceof Twig_ExtensionInterface) { $compiler->raw(sprintf('$this->env->getExtension(\'%s\')->%s', $callable[0]->getName(), $callable[1])); } else { $type = ucfirst($this->getAttribute('type')); $compiler->raw(sprintf('call_user_func_array($this->env->get%s(\'%s\')->getCallable(), array', $type, $this->getAttribute('name'))); $closingParenthesis = true; } } else { $compiler->raw($this->getAttribute('thing')->compile()); } $this->compileArguments($compiler); if ($closingParenthesis) { $compiler->raw(')'); } } protected function compileArguments(Twig_Compiler $compiler) { $compiler->raw('('); $first = true; if ($this->hasAttribute('needs_environment') && $this->getAttribute('needs_environment')) { $compiler->raw('$this->env'); $first = false; } if ($this->hasAttribute('needs_context') && $this->getAttribute('needs_context')) { if (!$first) { $compiler->raw(', '); } $compiler->raw('$context'); $first = false; } if ($this->hasAttribute('arguments')) { foreach ($this->getAttribute('arguments') as $argument) { if (!$first) { $compiler->raw(', '); } $compiler->string($argument); $first = false; } } if ($this->hasNode('node')) { if (!$first) { $compiler->raw(', '); } $compiler->subcompile($this->getNode('node')); $first = false; } if ($this->hasNode('arguments') && null !== $this->getNode('arguments')) { $callable = $this->hasAttribute('callable') ? $this->getAttribute('callable') : null; $arguments = $this->getArguments($callable, $this->getNode('arguments')); foreach ($arguments as $node) { if (!$first) { $compiler->raw(', '); } $compiler->subcompile($node); $first = false; } } $compiler->raw(')'); } protected function getArguments($callable, $arguments) { $parameters = array(); $named = false; foreach ($arguments as $name => $node) { if (!is_int($name)) { $named = true; $name = $this->normalizeName($name); } elseif ($named) { throw new Twig_Error_Syntax(sprintf('Positional arguments cannot be used after named arguments for %s "%s".', $this->getAttribute('type'), $this->getAttribute('name'))); } $parameters[$name] = $node; } if (!$named) { return $parameters; } if (!$callable) { throw new LogicException(sprintf('Named arguments are not supported for %s "%s".', $this->getAttribute('type'), $this->getAttribute('name'))); } // manage named arguments if (is_array($callable)) { $r = new ReflectionMethod($callable[0], $callable[1]); } elseif (is_object($callable) && !$callable instanceof Closure) { $r = new ReflectionObject($callable); $r = $r->getMethod('__invoke'); } else { $r = new ReflectionFunction($callable); } $definition = $r->getParameters(); if ($this->hasNode('node')) { array_shift($definition); } if ($this->hasAttribute('needs_environment') && $this->getAttribute('needs_environment')) { array_shift($definition); } if ($this->hasAttribute('needs_context') && $this->getAttribute('needs_context')) { array_shift($definition); } if ($this->hasAttribute('arguments') && null !== $this->getAttribute('arguments')) { foreach ($this->getAttribute('arguments') as $argument) { array_shift($definition); } } $arguments = array(); $pos = 0; foreach ($definition as $param) { $name = $this->normalizeName($param->name); if (array_key_exists($name, $parameters)) { if (array_key_exists($pos, $parameters)) { throw new Twig_Error_Syntax(sprintf('Argument "%s" is defined twice for %s "%s".', $name, $this->getAttribute('type'), $this->getAttribute('name'))); } $arguments[] = $parameters[$name]; unset($parameters[$name]); } elseif (array_key_exists($pos, $parameters)) { $arguments[] = $parameters[$pos]; unset($parameters[$pos]); ++$pos; } elseif ($param->isDefaultValueAvailable()) { $arguments[] = new Twig_Node_Expression_Constant($param->getDefaultValue(), -1); } elseif ($param->isOptional()) { break; } else { throw new Twig_Error_Syntax(sprintf('Value for argument "%s" is required for %s "%s".', $name, $this->getAttribute('type'), $this->getAttribute('name'))); } } if (!empty($parameters)) { throw new Twig_Error_Syntax(sprintf('Unknown argument%s "%s" for %s "%s".', count($parameters) > 1 ? 's' : '' , implode('", "', array_keys($parameters)), $this->getAttribute('type'), $this->getAttribute('name'))); } return $arguments; } protected function normalizeName($name) { return strtolower(preg_replace(array('/([A-Z]+)([A-Z][a-z])/', '/([a-z\d])([A-Z])/'), array('\\1_\\2', '\\1_\\2'), $name)); } }