Revert: Improve class loading in GroovyMethodInfo. (cf9bf0e)

plugins/groovy/src/org/jetbrains/plugins/groovy/util/ClassInstanceCache.java

@@ -1,5 +1,7 @@
 package org.jetbrains.plugins.groovy.util;
 
+import com.intellij.ide.plugins.IdeaPluginDescriptor;
+import com.intellij.ide.plugins.PluginManager;
 import com.intellij.util.containers.ConcurrentHashMap;
 import org.jetbrains.annotations.NotNull;
 
@@ -13,16 +15,34 @@ public class ClassInstanceCache {
   private ClassInstanceCache() {
   }
 
+  private static Object createInstance(@NotNull String className) {
+    try {
+      try {
+        return Class.forName(className).newInstance();
+      }
+      catch (ClassNotFoundException e) {
+        for (IdeaPluginDescriptor descriptor : PluginManager.getPlugins()) {
+          try {
+            return descriptor.getPluginClassLoader().loadClass(className).newInstance();
+          }
+          catch (ClassNotFoundException ignored) {
+
+          }
+        }
+
+        throw new RuntimeException("Class not found: " + className);
+      }
+    }
+    catch (Exception e) {
+      throw new RuntimeException(e);
+    }
+  }
+
   @SuppressWarnings("unchecked")
   public static <T> T getInstance(@NotNull String className, ClassLoader classLoader) {
     Object res = CACHE.get(className);
     if (res == null) {
-      try {
-        res = classLoader.loadClass(className).newInstance();
-      }
-      catch (Exception e) {
-        throw new RuntimeException(e);
-      }
+      res = createInstance(className);
 
       Object oldValue = CACHE.putIfAbsent(className, res);
       if (oldValue != null) {
@@ -32,4 +52,5 @@ public class ClassInstanceCache {
 
     return (T)res;
   }
+  
 }