From 4f5b44bd3bd490309eb2ba7b44df4769816ba729 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Nicolas=20L=C5=93uillet?= Date: Sat, 3 Aug 2013 19:26:54 +0200 Subject: twig implementation --- inc/3rdparty/Twig/NodeVisitor/Escaper.php | 167 ----------------- inc/3rdparty/Twig/NodeVisitor/Optimizer.php | 246 ------------------------- inc/3rdparty/Twig/NodeVisitor/SafeAnalysis.php | 131 ------------- inc/3rdparty/Twig/NodeVisitor/Sandbox.php | 92 --------- 4 files changed, 636 deletions(-) delete mode 100644 inc/3rdparty/Twig/NodeVisitor/Escaper.php delete mode 100644 inc/3rdparty/Twig/NodeVisitor/Optimizer.php delete mode 100644 inc/3rdparty/Twig/NodeVisitor/SafeAnalysis.php delete mode 100644 inc/3rdparty/Twig/NodeVisitor/Sandbox.php (limited to 'inc/3rdparty/Twig/NodeVisitor') diff --git a/inc/3rdparty/Twig/NodeVisitor/Escaper.php b/inc/3rdparty/Twig/NodeVisitor/Escaper.php deleted file mode 100644 index cc4b3d71..00000000 --- a/inc/3rdparty/Twig/NodeVisitor/Escaper.php +++ /dev/null @@ -1,167 +0,0 @@ - - */ -class Twig_NodeVisitor_Escaper implements Twig_NodeVisitorInterface -{ - protected $statusStack = array(); - protected $blocks = array(); - protected $safeAnalysis; - protected $traverser; - protected $defaultStrategy = false; - protected $safeVars = array(); - - public function __construct() - { - $this->safeAnalysis = new Twig_NodeVisitor_SafeAnalysis(); - } - - /** - * Called before child nodes are visited. - * - * @param Twig_NodeInterface $node The node to visit - * @param Twig_Environment $env The Twig environment instance - * - * @return Twig_NodeInterface The modified node - */ - public function enterNode(Twig_NodeInterface $node, Twig_Environment $env) - { - if ($node instanceof Twig_Node_Module) { - if ($env->hasExtension('escaper') && $defaultStrategy = $env->getExtension('escaper')->getDefaultStrategy($node->getAttribute('filename'))) { - $this->defaultStrategy = $defaultStrategy; - } - $this->safeVars = array(); - } elseif ($node instanceof Twig_Node_AutoEscape) { - $this->statusStack[] = $node->getAttribute('value'); - } elseif ($node instanceof Twig_Node_Block) { - $this->statusStack[] = isset($this->blocks[$node->getAttribute('name')]) ? $this->blocks[$node->getAttribute('name')] : $this->needEscaping($env); - } elseif ($node instanceof Twig_Node_Import) { - $this->safeVars[] = $node->getNode('var')->getAttribute('name'); - } - - return $node; - } - - /** - * Called after child nodes are visited. - * - * @param Twig_NodeInterface $node The node to visit - * @param Twig_Environment $env The Twig environment instance - * - * @return Twig_NodeInterface The modified node - */ - public function leaveNode(Twig_NodeInterface $node, Twig_Environment $env) - { - if ($node instanceof Twig_Node_Module) { - $this->defaultStrategy = false; - $this->safeVars = array(); - } elseif ($node instanceof Twig_Node_Expression_Filter) { - return $this->preEscapeFilterNode($node, $env); - } elseif ($node instanceof Twig_Node_Print) { - return $this->escapePrintNode($node, $env, $this->needEscaping($env)); - } - - if ($node instanceof Twig_Node_AutoEscape || $node instanceof Twig_Node_Block) { - array_pop($this->statusStack); - } elseif ($node instanceof Twig_Node_BlockReference) { - $this->blocks[$node->getAttribute('name')] = $this->needEscaping($env); - } - - return $node; - } - - protected function escapePrintNode(Twig_Node_Print $node, Twig_Environment $env, $type) - { - if (false === $type) { - return $node; - } - - $expression = $node->getNode('expr'); - - if ($this->isSafeFor($type, $expression, $env)) { - return $node; - } - - $class = get_class($node); - - return new $class( - $this->getEscaperFilter($type, $expression), - $node->getLine() - ); - } - - protected function preEscapeFilterNode(Twig_Node_Expression_Filter $filter, Twig_Environment $env) - { - $name = $filter->getNode('filter')->getAttribute('value'); - - $type = $env->getFilter($name)->getPreEscape(); - if (null === $type) { - return $filter; - } - - $node = $filter->getNode('node'); - if ($this->isSafeFor($type, $node, $env)) { - return $filter; - } - - $filter->setNode('node', $this->getEscaperFilter($type, $node)); - - return $filter; - } - - protected function isSafeFor($type, Twig_NodeInterface $expression, $env) - { - $safe = $this->safeAnalysis->getSafe($expression); - - if (null === $safe) { - if (null === $this->traverser) { - $this->traverser = new Twig_NodeTraverser($env, array($this->safeAnalysis)); - } - - $this->safeAnalysis->setSafeVars($this->safeVars); - - $this->traverser->traverse($expression); - $safe = $this->safeAnalysis->getSafe($expression); - } - - return in_array($type, $safe) || in_array('all', $safe); - } - - protected function needEscaping(Twig_Environment $env) - { - if (count($this->statusStack)) { - return $this->statusStack[count($this->statusStack) - 1]; - } - - return $this->defaultStrategy ? $this->defaultStrategy : false; - } - - protected function getEscaperFilter($type, Twig_NodeInterface $node) - { - $line = $node->getLine(); - $name = new Twig_Node_Expression_Constant('escape', $line); - $args = new Twig_Node(array(new Twig_Node_Expression_Constant((string) $type, $line), new Twig_Node_Expression_Constant(null, $line), new Twig_Node_Expression_Constant(true, $line))); - - return new Twig_Node_Expression_Filter($node, $name, $args, $line); - } - - /** - * {@inheritdoc} - */ - public function getPriority() - { - return 0; - } -} diff --git a/inc/3rdparty/Twig/NodeVisitor/Optimizer.php b/inc/3rdparty/Twig/NodeVisitor/Optimizer.php deleted file mode 100644 index a254def7..00000000 --- a/inc/3rdparty/Twig/NodeVisitor/Optimizer.php +++ /dev/null @@ -1,246 +0,0 @@ - - */ -class Twig_NodeVisitor_Optimizer implements Twig_NodeVisitorInterface -{ - const OPTIMIZE_ALL = -1; - const OPTIMIZE_NONE = 0; - const OPTIMIZE_FOR = 2; - const OPTIMIZE_RAW_FILTER = 4; - const OPTIMIZE_VAR_ACCESS = 8; - - protected $loops = array(); - protected $optimizers; - protected $prependedNodes = array(); - protected $inABody = false; - - /** - * Constructor. - * - * @param integer $optimizers The optimizer mode - */ - public function __construct($optimizers = -1) - { - if (!is_int($optimizers) || $optimizers > 2) { - throw new InvalidArgumentException(sprintf('Optimizer mode "%s" is not valid.', $optimizers)); - } - - $this->optimizers = $optimizers; - } - - /** - * {@inheritdoc} - */ - public function enterNode(Twig_NodeInterface $node, Twig_Environment $env) - { - if (self::OPTIMIZE_FOR === (self::OPTIMIZE_FOR & $this->optimizers)) { - $this->enterOptimizeFor($node, $env); - } - - if (!version_compare(phpversion(), '5.4.0RC1', '>=') && self::OPTIMIZE_VAR_ACCESS === (self::OPTIMIZE_VAR_ACCESS & $this->optimizers) && !$env->isStrictVariables() && !$env->hasExtension('sandbox')) { - if ($this->inABody) { - if (!$node instanceof Twig_Node_Expression) { - if (get_class($node) !== 'Twig_Node') { - array_unshift($this->prependedNodes, array()); - } - } else { - $node = $this->optimizeVariables($node, $env); - } - } elseif ($node instanceof Twig_Node_Body) { - $this->inABody = true; - } - } - - return $node; - } - - /** - * {@inheritdoc} - */ - public function leaveNode(Twig_NodeInterface $node, Twig_Environment $env) - { - $expression = $node instanceof Twig_Node_Expression; - - if (self::OPTIMIZE_FOR === (self::OPTIMIZE_FOR & $this->optimizers)) { - $this->leaveOptimizeFor($node, $env); - } - - if (self::OPTIMIZE_RAW_FILTER === (self::OPTIMIZE_RAW_FILTER & $this->optimizers)) { - $node = $this->optimizeRawFilter($node, $env); - } - - $node = $this->optimizePrintNode($node, $env); - - if (self::OPTIMIZE_VAR_ACCESS === (self::OPTIMIZE_VAR_ACCESS & $this->optimizers) && !$env->isStrictVariables() && !$env->hasExtension('sandbox')) { - if ($node instanceof Twig_Node_Body) { - $this->inABody = false; - } elseif ($this->inABody) { - if (!$expression && get_class($node) !== 'Twig_Node' && $prependedNodes = array_shift($this->prependedNodes)) { - $nodes = array(); - foreach (array_unique($prependedNodes) as $name) { - $nodes[] = new Twig_Node_SetTemp($name, $node->getLine()); - } - - $nodes[] = $node; - $node = new Twig_Node($nodes); - } - } - } - - return $node; - } - - protected function optimizeVariables($node, $env) - { - if ('Twig_Node_Expression_Name' === get_class($node) && $node->isSimple()) { - $this->prependedNodes[0][] = $node->getAttribute('name'); - - return new Twig_Node_Expression_TempName($node->getAttribute('name'), $node->getLine()); - } - - return $node; - } - - /** - * Optimizes print nodes. - * - * It replaces: - * - * * "echo $this->render(Parent)Block()" with "$this->display(Parent)Block()" - * - * @param Twig_NodeInterface $node A Node - * @param Twig_Environment $env The current Twig environment - */ - protected function optimizePrintNode($node, $env) - { - if (!$node instanceof Twig_Node_Print) { - return $node; - } - - if ( - $node->getNode('expr') instanceof Twig_Node_Expression_BlockReference || - $node->getNode('expr') instanceof Twig_Node_Expression_Parent - ) { - $node->getNode('expr')->setAttribute('output', true); - - return $node->getNode('expr'); - } - - return $node; - } - - /** - * Removes "raw" filters. - * - * @param Twig_NodeInterface $node A Node - * @param Twig_Environment $env The current Twig environment - */ - protected function optimizeRawFilter($node, $env) - { - if ($node instanceof Twig_Node_Expression_Filter && 'raw' == $node->getNode('filter')->getAttribute('value')) { - return $node->getNode('node'); - } - - return $node; - } - - /** - * Optimizes "for" tag by removing the "loop" variable creation whenever possible. - * - * @param Twig_NodeInterface $node A Node - * @param Twig_Environment $env The current Twig environment - */ - protected function enterOptimizeFor($node, $env) - { - if ($node instanceof Twig_Node_For) { - // disable the loop variable by default - $node->setAttribute('with_loop', false); - array_unshift($this->loops, $node); - } elseif (!$this->loops) { - // we are outside a loop - return; - } - - // when do we need to add the loop variable back? - - // the loop variable is referenced for the current loop - elseif ($node instanceof Twig_Node_Expression_Name && 'loop' === $node->getAttribute('name')) { - $this->addLoopToCurrent(); - } - - // block reference - elseif ($node instanceof Twig_Node_BlockReference || $node instanceof Twig_Node_Expression_BlockReference) { - $this->addLoopToCurrent(); - } - - // include without the only attribute - elseif ($node instanceof Twig_Node_Include && !$node->getAttribute('only')) { - $this->addLoopToAll(); - } - - // the loop variable is referenced via an attribute - elseif ($node instanceof Twig_Node_Expression_GetAttr - && (!$node->getNode('attribute') instanceof Twig_Node_Expression_Constant - || 'parent' === $node->getNode('attribute')->getAttribute('value') - ) - && (true === $this->loops[0]->getAttribute('with_loop') - || ($node->getNode('node') instanceof Twig_Node_Expression_Name - && 'loop' === $node->getNode('node')->getAttribute('name') - ) - ) - ) { - $this->addLoopToAll(); - } - } - - /** - * Optimizes "for" tag by removing the "loop" variable creation whenever possible. - * - * @param Twig_NodeInterface $node A Node - * @param Twig_Environment $env The current Twig environment - */ - protected function leaveOptimizeFor($node, $env) - { - if ($node instanceof Twig_Node_For) { - array_shift($this->loops); - } - } - - protected function addLoopToCurrent() - { - $this->loops[0]->setAttribute('with_loop', true); - } - - protected function addLoopToAll() - { - foreach ($this->loops as $loop) { - $loop->setAttribute('with_loop', true); - } - } - - /** - * {@inheritdoc} - */ - public function getPriority() - { - return 255; - } -} diff --git a/inc/3rdparty/Twig/NodeVisitor/SafeAnalysis.php b/inc/3rdparty/Twig/NodeVisitor/SafeAnalysis.php deleted file mode 100644 index c4bbd812..00000000 --- a/inc/3rdparty/Twig/NodeVisitor/SafeAnalysis.php +++ /dev/null @@ -1,131 +0,0 @@ -safeVars = $safeVars; - } - - public function getSafe(Twig_NodeInterface $node) - { - $hash = spl_object_hash($node); - if (isset($this->data[$hash])) { - foreach ($this->data[$hash] as $bucket) { - if ($bucket['key'] === $node) { - return $bucket['value']; - } - } - } - } - - protected function setSafe(Twig_NodeInterface $node, array $safe) - { - $hash = spl_object_hash($node); - if (isset($this->data[$hash])) { - foreach ($this->data[$hash] as &$bucket) { - if ($bucket['key'] === $node) { - $bucket['value'] = $safe; - - return; - } - } - } - $this->data[$hash][] = array( - 'key' => $node, - 'value' => $safe, - ); - } - - public function enterNode(Twig_NodeInterface $node, Twig_Environment $env) - { - return $node; - } - - public function leaveNode(Twig_NodeInterface $node, Twig_Environment $env) - { - if ($node instanceof Twig_Node_Expression_Constant) { - // constants are marked safe for all - $this->setSafe($node, array('all')); - } elseif ($node instanceof Twig_Node_Expression_BlockReference) { - // blocks are safe by definition - $this->setSafe($node, array('all')); - } elseif ($node instanceof Twig_Node_Expression_Parent) { - // parent block is safe by definition - $this->setSafe($node, array('all')); - } elseif ($node instanceof Twig_Node_Expression_Conditional) { - // intersect safeness of both operands - $safe = $this->intersectSafe($this->getSafe($node->getNode('expr2')), $this->getSafe($node->getNode('expr3'))); - $this->setSafe($node, $safe); - } elseif ($node instanceof Twig_Node_Expression_Filter) { - // filter expression is safe when the filter is safe - $name = $node->getNode('filter')->getAttribute('value'); - $args = $node->getNode('arguments'); - if (false !== $filter = $env->getFilter($name)) { - $safe = $filter->getSafe($args); - if (null === $safe) { - $safe = $this->intersectSafe($this->getSafe($node->getNode('node')), $filter->getPreservesSafety()); - } - $this->setSafe($node, $safe); - } else { - $this->setSafe($node, array()); - } - } elseif ($node instanceof Twig_Node_Expression_Function) { - // function expression is safe when the function is safe - $name = $node->getAttribute('name'); - $args = $node->getNode('arguments'); - $function = $env->getFunction($name); - if (false !== $function) { - $this->setSafe($node, $function->getSafe($args)); - } else { - $this->setSafe($node, array()); - } - } elseif ($node instanceof Twig_Node_Expression_MethodCall) { - if ($node->getAttribute('safe')) { - $this->setSafe($node, array('all')); - } else { - $this->setSafe($node, array()); - } - } elseif ($node instanceof Twig_Node_Expression_GetAttr && $node->getNode('node') instanceof Twig_Node_Expression_Name) { - $name = $node->getNode('node')->getAttribute('name'); - // attributes on template instances are safe - if ('_self' == $name || in_array($name, $this->safeVars)) { - $this->setSafe($node, array('all')); - } else { - $this->setSafe($node, array()); - } - } else { - $this->setSafe($node, array()); - } - - return $node; - } - - protected function intersectSafe(array $a = null, array $b = null) - { - if (null === $a || null === $b) { - return array(); - } - - if (in_array('all', $a)) { - return $b; - } - - if (in_array('all', $b)) { - return $a; - } - - return array_intersect($a, $b); - } - - /** - * {@inheritdoc} - */ - public function getPriority() - { - return 0; - } -} diff --git a/inc/3rdparty/Twig/NodeVisitor/Sandbox.php b/inc/3rdparty/Twig/NodeVisitor/Sandbox.php deleted file mode 100644 index fb27045b..00000000 --- a/inc/3rdparty/Twig/NodeVisitor/Sandbox.php +++ /dev/null @@ -1,92 +0,0 @@ - - */ -class Twig_NodeVisitor_Sandbox implements Twig_NodeVisitorInterface -{ - protected $inAModule = false; - protected $tags; - protected $filters; - protected $functions; - - /** - * Called before child nodes are visited. - * - * @param Twig_NodeInterface $node The node to visit - * @param Twig_Environment $env The Twig environment instance - * - * @return Twig_NodeInterface The modified node - */ - public function enterNode(Twig_NodeInterface $node, Twig_Environment $env) - { - if ($node instanceof Twig_Node_Module) { - $this->inAModule = true; - $this->tags = array(); - $this->filters = array(); - $this->functions = array(); - - return $node; - } elseif ($this->inAModule) { - // look for tags - if ($node->getNodeTag()) { - $this->tags[] = $node->getNodeTag(); - } - - // look for filters - if ($node instanceof Twig_Node_Expression_Filter) { - $this->filters[] = $node->getNode('filter')->getAttribute('value'); - } - - // look for functions - if ($node instanceof Twig_Node_Expression_Function) { - $this->functions[] = $node->getAttribute('name'); - } - - // wrap print to check __toString() calls - if ($node instanceof Twig_Node_Print) { - return new Twig_Node_SandboxedPrint($node->getNode('expr'), $node->getLine(), $node->getNodeTag()); - } - } - - return $node; - } - - /** - * Called after child nodes are visited. - * - * @param Twig_NodeInterface $node The node to visit - * @param Twig_Environment $env The Twig environment instance - * - * @return Twig_NodeInterface The modified node - */ - public function leaveNode(Twig_NodeInterface $node, Twig_Environment $env) - { - if ($node instanceof Twig_Node_Module) { - $this->inAModule = false; - - return new Twig_Node_SandboxedModule($node, array_unique($this->filters), array_unique($this->tags), array_unique($this->functions)); - } - - return $node; - } - - /** - * {@inheritdoc} - */ - public function getPriority() - { - return 0; - } -} -- cgit v1.2.3