replaced require with class_exists

src/Cache/CacheInterface.php

@@ -2,7 +2,7 @@
 
 namespace Twig\Cache;
 
-require __DIR__.'/../../lib/Twig/CacheInterface.php';
+class_exists('Twig_CacheInterface');
 
 if (\false) {
     interface CacheInterface extends \Twig_CacheInterface

src/Extension/ExtensionInterface.php

@@ -2,7 +2,7 @@
 
 namespace Twig\Extension;
 
-require __DIR__.'/../../lib/Twig/ExtensionInterface.php';
+class_exists('Twig_ExtensionInterface');
 
 if (\false) {
     interface ExtensionInterface extends \Twig_ExtensionInterface

src/Extension/GlobalsInterface.php

@@ -2,7 +2,7 @@
 
 namespace Twig\Extension;
 
-require __DIR__.'/../../lib/Twig/Extension/GlobalsInterface.php';
+class_exists('Twig_Extension_GlobalsInterface');
 
 if (\false) {
     interface GlobalsInterface extends \Twig_Extension_ExtensionInterface

src/Extension/InitRuntimeInterface.php

@@ -2,7 +2,7 @@
 
 namespace Twig\Extension;
 
-require __DIR__.'/../../lib/Twig/Extension/InitRuntimeInterface.php';
+class_exists('Twig_Extension_InitRuntimeInterface');
 
 if (\false) {
     interface InitRuntimeInterface extends \Twig_Extension_InitRuntimeInterface

src/Loader/ExistsLoaderInterface.php

@@ -2,7 +2,7 @@
 
 namespace Twig\Loader;
 
-require __DIR__.'/../../lib/Twig/ExistsLoaderInterface.php';
+class_exists('Twig_ExistsLoaderInterface');
 
 if (\false) {
     interface ExistsLoaderInterface extends \Twig_ExistsLoaderInterface

src/Loader/LoaderInterface.php

@@ -2,7 +2,7 @@
 
 namespace Twig\Loader;
 
-require __DIR__.'/../../lib/Twig/LoaderInterface.php';
+class_exists('Twig_LoaderInterface');
 
 if (\false) {
     interface LoaderInterface extends \Twig_LoaderInterface

src/Loader/SourceContextLoaderInterface.php

@@ -2,7 +2,7 @@
 
 namespace Twig\Loader;
 
-require __DIR__.'/../../lib/Twig/SourceContextLoaderInterface.php';
+class_exists('Twig_SourceContextLoaderInterface');
 
 if (\false) {
     interface SourceContextLoaderInterface extends \Twig_SourceContextLoaderInterface

src/Node/NodeCaptureInterface.php

@@ -2,7 +2,7 @@
 
 namespace Twig\Node;
 
-require __DIR__.'/../../lib/Twig/NodeCaptureInterface.php';
+class_exists('Twig_NodeCaptureInterface');
 
 if (\false) {
     interface NodeCaptureInterface extends \Twig_NodeCaptureInterface

src/Node/NodeOutputInterface.php

@@ -2,7 +2,7 @@
 
 namespace Twig\Node;
 
-require __DIR__.'/../../lib/Twig/NodeOutputInterface.php';
+class_exists('Twig_NodeOutputInterface');
 
 if (\false) {
     interface NodeOutputInterface extends \Twig_NodeOutputInterface

src/NodeVisitor/NodeVisitorInterface.php

@@ -2,7 +2,7 @@
 
 namespace Twig\NodeVisitor;
 
-require __DIR__.'/../../lib/Twig/NodeVisitorInterface.php';
+class_exists('Twig_NodeVisitorInterface');
 
 if (\false) {
     interface NodeVisitorInterface extends \Twig_NodeVisitorInterface

src/RuntimeLoader/RuntimeLoaderInterface.php

@@ -2,7 +2,7 @@
 
 namespace Twig\RuntimeLoader;
 
-require __DIR__.'/../../lib/Twig/RuntimeLoaderInterface.php';
+class_exists('Twig_RuntimeLoaderInterface');
 
 if (\false) {
     interface RuntimeLoaderInterface extends \Twig_RuntimeLoaderInterface

src/Sandbox/SecurityPolicyInterface.php

@@ -2,7 +2,7 @@
 
 namespace Twig\Sandbox;
 
-require __DIR__.'/../../lib/Twig/Sandbox/SecurityPolicyInterface.php';
+class_exists('Twig_Sandbox_SecurityPolicyInterface');
 
 if (\false) {
     interface SecurityPolicyInterface extends \Twig_Sandbox_SecurityPolicyInterface

src/TokenParser/TokenParserInterface.php

@@ -2,7 +2,7 @@
 
 namespace Twig\TokenParser;
 
-require __DIR__.'/../../lib/Twig/TokenParserInterface.php';
+class_exists('Twig_TokenParserInterface');
 
 if (\false) {
     interface TokenParserInterface extends \Twig_TokenParserInterface