bug #2507 Move class_exists() at the bottom of files (nicolas-grekas)

This PR was merged into the 1.x branch.

Discussion
----------

Move class_exists() at the bottom of files

Fixes #2503
Closes #2506

Commits
-------

95e912b Move class_exists() at the bottom of files

lib/Twig/BaseNodeVisitor.php

@@ -9,9 +9,6 @@
  * file that was distributed with this source code.
  */
 
-class_exists('Twig_Environment');
-class_exists('Twig_Node');
-
 /**
  * Twig_BaseNodeVisitor can be used to make node visitors compatible with Twig 1.x and 2.x.
  *
@@ -53,3 +50,5 @@ abstract protected function doLeaveNode(Twig_Node $node, Twig_Environment $env);
 }
 
 class_alias('Twig_BaseNodeVisitor', 'Twig\NodeVisitor\AbstractNodeVisitor', false);
+class_exists('Twig_Environment');
+class_exists('Twig_Node');

lib/Twig/Compiler.php

@@ -10,8 +10,6 @@
  * file that was distributed with this source code.
  */
 
-class_exists('Twig_Node');
-
 /**
  * Compiles a node to PHP code.
  *
@@ -283,3 +281,4 @@ public function getVarName()
 }
 
 class_alias('Twig_Compiler', 'Twig\Compiler', false);
+class_exists('Twig_Node');

lib/Twig/Error.php

@@ -9,8 +9,6 @@
  * file that was distributed with this source code.
  */
 
-class_exists('Twig_Source');
-
 /**
  * Twig base exception.
  *
@@ -362,3 +360,4 @@ protected function guessTemplateInfo()
 }
 
 class_alias('Twig_Error', 'Twig\Error\Error', false);
+class_exists('Twig_Source');

lib/Twig/Extension.php

@@ -9,8 +9,6 @@
  * file that was distributed with this source code.
  */
 
-class_exists('Twig_Environment');
-
 abstract class Twig_Extension implements Twig_ExtensionInterface
 {
     /**
@@ -68,3 +66,4 @@ public function getName()
 }
 
 class_alias('Twig_Extension', 'Twig\Extension\AbstractExtension', false);
+class_exists('Twig_Environment');

lib/Twig/Extension/Profiler.php

@@ -9,8 +9,6 @@
  * file that was distributed with this source code.
  */
 
-class_exists('Twig_Profiler_Profile');
-
 class Twig_Extension_Profiler extends Twig_Extension
 {
     private $actives = array();
@@ -48,3 +46,4 @@ public function getName()
 }
 
 class_alias('Twig_Extension_Profiler', 'Twig\Extension\ProfilerExtension', false);
+class_exists('Twig_Profiler_Profile');

lib/Twig/ExtensionInterface.php

@@ -9,8 +9,6 @@
  * file that was distributed with this source code.
  */
 
-class_exists('Twig_Environment');
-
 /**
  * Interface implemented by extension classes.
  *
@@ -89,3 +87,4 @@ public function getName();
 }
 
 class_alias('Twig_ExtensionInterface', 'Twig\Extension\ExtensionInterface', false);
+class_exists('Twig_Environment');

lib/Twig/Node.php

@@ -10,8 +10,6 @@
  * file that was distributed with this source code.
  */
 
-class_exists('Twig_Compiler');
-
 /**
  * Represents a node in the AST.
  *
@@ -255,3 +253,4 @@ public function getFilename()
 }
 
 class_alias('Twig_Node', 'Twig\Node\Node', false);
+class_exists('Twig_Compiler');

lib/Twig/NodeVisitorInterface.php

@@ -9,9 +9,6 @@
  * file that was distributed with this source code.
  */
 
-class_exists('Twig_Environment');
-class_exists('Twig_Node');
-
 /**
  * Twig_NodeVisitorInterface is the interface the all node visitor classes must implement.
  *
@@ -44,3 +41,5 @@ public function getPriority();
 }
 
 class_alias('Twig_NodeVisitorInterface', 'Twig\NodeVisitor\NodeVisitorInterface', false);
+class_exists('Twig_Environment');
+class_exists('Twig_Node');

lib/Twig/Parser.php

@@ -10,9 +10,6 @@
  * file that was distributed with this source code.
  */
 
-class_exists('Twig_Node');
-class_exists('Twig_TokenStream');
-
 /**
  * Default parser implementation.
  *
@@ -409,3 +406,5 @@ protected function filterBodyNodes(Twig_NodeInterface $node)
 }
 
 class_alias('Twig_Parser', 'Twig\Parser', false);
+class_exists('Twig_Node');
+class_exists('Twig_TokenStream');

lib/Twig/Test/NodeTestCase.php

@@ -9,9 +9,6 @@
  * file that was distributed with this source code.
  */
 
-class_exists('Twig_Environment');
-class_exists('Twig_Node');
-
 use PHPUnit\Framework\TestCase;
 
 abstract class Twig_Test_NodeTestCase extends TestCase
@@ -74,3 +71,5 @@ protected function getAttributeGetter()
 }
 
 class_alias('Twig_Test_NodeTestCase', 'Twig\Test\NodeTestCase', false);
+class_exists('Twig_Environment');
+class_exists('Twig_Node');

lib/Twig/TokenParserInterface.php

@@ -9,9 +9,6 @@
  * file that was distributed with this source code.
  */
 
-class_exists('Twig_Parser');
-class_exists('Twig_Token');
-
 /**
  * Interface implemented by token parsers.
  *
@@ -42,3 +39,5 @@ public function getTag();
 }
 
 class_alias('Twig_TokenParserInterface', 'Twig\TokenParser\TokenParserInterface', false);
+class_exists('Twig_Parser');
+class_exists('Twig_Token');