Improve speed by using parsed nodes

Before we used the phpdoc context factory to create docblock context.
But since this was parsing the code over any over again it was very slow.
By using the nodes from the php-parser we are way faster.

Thanks to @Ocramius who implemented this in Roave/BetterReflection.

Author: jaapio

.travis.yml

@@ -1,5 +1,5 @@
 language: php
-php: [ 7.1, 7.2, 7.3, 7.4 nightly ]
+php: [ 7.1, 7.2, 7.3, nightly ]
 sudo: false
 
 env:

composer.json

@@ -14,7 +14,7 @@
             "phpDocumentor\\": [
                 "tests/component/",
                 "tests/unit/phpDocumentor",
-                "tests/mocks/"
+                "tests/bench/"
             ]
         }
     },
@@ -27,7 +27,7 @@
     },
     "require-dev": {
         "mockery/mockery": "~1.0",
-        "mikey179/vfsStream": "~1.2"
+        "mikey179/vfsstream": "~1.2"
     },
     "extra": {
         "branch-alias": {

composer.lock

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <phive xmlns="https://phar.io/phive">
   <phar name="phpstan" version="^0.9.1" installed="0.10.7" location="./tools/phpstan" copy="true"/>
-  <phar name="phpunit" version="^6.0" installed="6.5.13" location="./tools/phpunit" copy="true"/>
+  <phar name="phpunit" version="^7.0" installed="7.5.7" location="./tools/phpunit" copy="true"/>
+  <phar name="phpbench" version="^0.16.9" installed="0.16.9" location="./tools/phpbench" copy="true"/>
 </phive>

phive.xml

@@ -0,0 +1,7 @@
+{
+  "bootstrap": "vendor/autoload.php",
+  "path": "tests/bench",
+  "extensions": [
+    "PhpBench\\Extensions\\XDebug\\XDebugExtension"
+  ]
+}

phpbench.json

@@ -26,6 +26,7 @@
 use phpDocumentor\Reflection\Php\StrategyContainer;
 use phpDocumentor\Reflection\Types\Context;
 use phpDocumentor\Reflection\Types\ContextFactory;
+use phpDocumentor\Reflection\Types\NamespaceNodeToContext;
 use PhpParser\Comment\Doc;
 use PhpParser\Node;
 use PhpParser\Node\Stmt\Class_ as ClassNode;
@@ -98,10 +99,7 @@ private function createFile(CreateCommand $command)
         $code = $file->getContents();
         $nodes = $this->nodesFactory->create($code);
 
-        $contextFactory = new ContextFactory();
-        $context = $contextFactory->createForNamespace('\\', $code);
-
-        $docBlock = $this->createFileDocBlock(null, $command->getStrategies(), $context, $nodes);
+        $docBlock = $this->createFileDocBlock(null, $command->getStrategies(), null, $nodes);
 
         $result = new FileElement(
             $file->md5(),
@@ -110,18 +108,20 @@ private function createFile(CreateCommand $command)
             $docBlock
         );
 
-        $this->createElements(new Fqsen('\\'), $nodes, $result, $command->getStrategies());
+        $this->createElements($nodes, $result, $command->getStrategies(), null);
 
         return $result;
     }
 
     /**
      * @param Node[] $nodes
      */
-    private function createElements(Fqsen $namespace, array $nodes, FileElement $file, StrategyContainer $strategies): void
-    {
-        $contextFactory = new ContextFactory();
-        $context = $contextFactory->createForNamespace((string) $namespace, $file->getSource());
+    private function createElements(
+        array $nodes,
+        FileElement $file,
+        StrategyContainer $strategies,
+        ?Context $context
+    ): void {
         foreach ($nodes as $node) {
             switch (get_class($node)) {
                 case ClassNode::class:
@@ -140,8 +140,9 @@ private function createElements(Fqsen $namespace, array $nodes, FileElement $fil
                     $file->addInterface($interface);
                     break;
                 case NamespaceNode::class:
+                    $context = (new NamespaceNodeToContext())($node);
                     $file->addNamespace($node->fqsen);
-                    $this->createElements($node->fqsen, $node->stmts, $file, $strategies);
+                    $this->createElements($node->stmts, $file, $strategies, $context);
                     break;
                 case TraitNode::class:
                     $strategy = $strategies->findMatching($node);