--- /dev/null
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 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
+{
+ private $reflector;
+
+ protected function compileCallable(Twig_Compiler $compiler)
+ {
+ $closingParenthesis = false;
+ if ($this->hasAttribute('callable') && $callable = $this->getAttribute('callable')) {
+ if (is_string($callable) && false === strpos($callable, '::')) {
+ $compiler->raw($callable);
+ } else {
+ list($r, $callable) = $this->reflectCallable($callable);
+ if ($r instanceof ReflectionMethod && is_string($callable[0])) {
+ if ($r->isStatic()) {
+ $compiler->raw(sprintf('%s::%s', $callable[0], $callable[1]));
+ } else {
+ $compiler->raw(sprintf('$this->env->getRuntime(\'%s\')->%s', $callable[0], $callable[1]));
+ }
+ } elseif ($r instanceof ReflectionMethod && $callable[0] instanceof Twig_ExtensionInterface) {
+ $compiler->raw(sprintf('$this->env->getExtension(\'%s\')->%s', get_class($callable[0]), $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')) {
+ $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)
+ {
+ $callType = $this->getAttribute('type');
+ $callName = $this->getAttribute('name');
+
+ $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".', $callType, $callName));
+ }
+
+ $parameters[$name] = $node;
+ }
+
+ $isVariadic = $this->hasAttribute('is_variadic') && $this->getAttribute('is_variadic');
+ if (!$named && !$isVariadic) {
+ return $parameters;
+ }
+
+ if (!$callable) {
+ if ($named) {
+ $message = sprintf('Named arguments are not supported for %s "%s".', $callType, $callName);
+ } else {
+ $message = sprintf('Arbitrary positional arguments are not supported for %s "%s".', $callType, $callName);
+ }
+
+ throw new LogicException($message);
+ }
+
+ $callableParameters = $this->getCallableParameters($callable, $isVariadic);
+ $arguments = array();
+ $names = array();
+ $missingArguments = array();
+ $optionalArguments = array();
+ $pos = 0;
+ foreach ($callableParameters as $callableParameter) {
+ $names[] = $name = $this->normalizeName($callableParameter->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, $callType, $callName));
+ }
+
+ if (count($missingArguments)) {
+ throw new Twig_Error_Syntax(sprintf(
+ 'Argument "%s" could not be assigned for %s "%s(%s)" because it is mapped to an internal PHP function which cannot determine default value for optional argument%s "%s".',
+ $name, $callType, $callName, implode(', ', $names), count($missingArguments) > 1 ? 's' : '', implode('", "', $missingArguments))
+ );
+ }
+
+ $arguments = array_merge($arguments, $optionalArguments);
+ $arguments[] = $parameters[$name];
+ unset($parameters[$name]);
+ $optionalArguments = array();
+ } elseif (array_key_exists($pos, $parameters)) {
+ $arguments = array_merge($arguments, $optionalArguments);
+ $arguments[] = $parameters[$pos];
+ unset($parameters[$pos]);
+ $optionalArguments = array();
+ ++$pos;
+ } elseif ($callableParameter->isDefaultValueAvailable()) {
+ $optionalArguments[] = new Twig_Node_Expression_Constant($callableParameter->getDefaultValue(), -1);
+ } elseif ($callableParameter->isOptional()) {
+ if (empty($parameters)) {
+ break;
+ } else {
+ $missingArguments[] = $name;
+ }
+ } else {
+ throw new Twig_Error_Syntax(sprintf('Value for argument "%s" is required for %s "%s".', $name, $callType, $callName));
+ }
+ }
+
+ if ($isVariadic) {
+ $arbitraryArguments = new Twig_Node_Expression_Array(array(), -1);
+ foreach ($parameters as $key => $value) {
+ if (is_int($key)) {
+ $arbitraryArguments->addElement($value);
+ } else {
+ $arbitraryArguments->addElement($value, new Twig_Node_Expression_Constant($key, -1));
+ }
+ unset($parameters[$key]);
+ }
+
+ if ($arbitraryArguments->count()) {
+ $arguments = array_merge($arguments, $optionalArguments);
+ $arguments[] = $arbitraryArguments;
+ }
+ }
+
+ if (!empty($parameters)) {
+ $unknownParameter = null;
+ foreach ($parameters as $parameter) {
+ if ($parameter instanceof Twig_Node) {
+ $unknownParameter = $parameter;
+ break;
+ }
+ }
+
+ throw new Twig_Error_Syntax(sprintf(
+ 'Unknown argument%s "%s" for %s "%s(%s)".',
+ count($parameters) > 1 ? 's' : '', implode('", "', array_keys($parameters)), $callType, $callName, implode(', ', $names)
+ ), $unknownParameter ? $unknownParameter->getTemplateLine() : -1);
+ }
+
+ 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'), $name));
+ }
+
+ private function getCallableParameters($callable, $isVariadic)
+ {
+ list($r) = $this->reflectCallable($callable);
+ if (null === $r) {
+ return array();
+ }
+
+ $parameters = $r->getParameters();
+ if ($this->hasNode('node')) {
+ array_shift($parameters);
+ }
+ if ($this->hasAttribute('needs_environment') && $this->getAttribute('needs_environment')) {
+ array_shift($parameters);
+ }
+ if ($this->hasAttribute('needs_context') && $this->getAttribute('needs_context')) {
+ array_shift($parameters);
+ }
+ if ($this->hasAttribute('arguments') && null !== $this->getAttribute('arguments')) {
+ foreach ($this->getAttribute('arguments') as $argument) {
+ array_shift($parameters);
+ }
+ }
+ if ($isVariadic) {
+ $argument = end($parameters);
+ if ($argument && $argument->isArray() && $argument->isDefaultValueAvailable() && array() === $argument->getDefaultValue()) {
+ array_pop($parameters);
+ } else {
+ $callableName = $r->name;
+ if ($r instanceof ReflectionMethod) {
+ $callableName = $r->getDeclaringClass()->name.'::'.$callableName;
+ }
+
+ throw new LogicException(sprintf('The last parameter of "%s" for %s "%s" must be an array with default value, eg. "array $arg = array()".', $callableName, $this->getAttribute('type'), $this->getAttribute('name')));
+ }
+ }
+
+ return $parameters;
+ }
+
+ private function reflectCallable($callable)
+ {
+ if (null !== $this->reflector) {
+ return $this->reflector;
+ }
+
+ if (is_array($callable)) {
+ if (!method_exists($callable[0], $callable[1])) {
+ // __call()
+ return array(null, array());
+ }
+ $r = new ReflectionMethod($callable[0], $callable[1]);
+ } elseif (is_object($callable) && !$callable instanceof Closure) {
+ $r = new ReflectionObject($callable);
+ $r = $r->getMethod('__invoke');
+ $callable = array($callable, '__invoke');
+ } elseif (is_string($callable) && false !== $pos = strpos($callable, '::')) {
+ $class = substr($callable, 0, $pos);
+ $method = substr($callable, $pos + 2);
+ if (!method_exists($class, $method)) {
+ // __staticCall()
+ return array(null, array());
+ }
+ $r = new ReflectionMethod($callable);
+ $callable = array($class, $method);
+ } else {
+ $r = new ReflectionFunction($callable);
+ }
+
+ return $this->reflector = array($r, $callable);
+ }
+}
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