<?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));
}
}