make it more clear in while loading which class from which module did NCDFE occur inside groovyc

plugins/groovy/jps-plugin/src/org/jetbrains/jps/incremental/groovy/GroovycOutputParser.java

@@ -158,6 +158,11 @@ public class GroovycOutputParser {
                                    ? BuildMessage.Kind.WARNING
                                    : BuildMessage.Kind.INFO;
 
+        if (StringUtil.isEmpty(url) || "null".equals(url)) {
+          url = null;
+          message = "While compiling " + myChunk.getPresentableShortName() + ": " + message;
+        }
+
         CompilerMessage compilerMessage = new CompilerMessage("Groovyc", kind, message, url, -1, -1, -1, lineInt, columnInt);
         if (LOG.isDebugEnabled()) {
           LOG.debug("Message: " + compilerMessage);
@@ -227,7 +232,7 @@ public class GroovycOutputParser {
       if (msg.contains(GroovyRtConstants.NO_GROOVY)) {
         messages.add(reportNoGroovy());
       } else {
-        messages.add(new CompilerMessage("Groovyc", BuildMessage.Kind.INFO, msg));
+        messages.add(new CompilerMessage("Groovyc", BuildMessage.Kind.INFO, "While compiling " + myChunk.getPresentableShortName() + ":" + msg));
       }
 
     }

plugins/groovy/jps-plugin/src/org/jetbrains/jps/incremental/groovy/JointCompilationClassLoader.java

@@ -32,6 +32,18 @@ class JointCompilationClassLoader extends UrlClassLoader {
     myClassPath = super.getClassPath();
   }
 
+  @Override
+  protected Class _defineClass(String name, byte[] b) {
+    try {
+      return super._defineClass(name, b);
+    }
+    catch (NoClassDefFoundError e) {
+      NoClassDefFoundError wrap = new NoClassDefFoundError(e.getMessage() + " needed for " + name);
+      wrap.initCause(e);
+      throw wrap;
+    }
+  }
+
   @NotNull
   @Override
   protected ClassPath getClassPath() {

plugins/groovy/rt/src/org/jetbrains/groovy/compiler/rt/GroovyCompilerWrapper.java

@@ -73,7 +73,7 @@ public class GroovyCompilerWrapper {
     }
     catch (NoClassDefFoundError e) {
       final String className = e.getMessage();
-      if (className.startsWith("org/apache/ivy/")) {
+      if (className.contains("org/apache/ivy/")) {
         addMessageWithoutLocation("Cannot @Grab without Ivy, please add it to your module dependencies (NoClassDefFoundError: " + className + ")", true);
       } else {
         throw e;

plugins/groovy/rt/src/org/jetbrains/groovy/compiler/rt/GroovycRunner.java

@@ -23,6 +23,7 @@ import java.io.BufferedReader;
 import java.io.File;
 import java.io.FileReader;
 import java.io.IOException;
+import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 import java.net.URL;
 import java.util.*;
@@ -135,7 +136,8 @@ public class GroovycRunner {
       method.invoke(null, forStubs, argPath, configScript, mailbox);
     }
     catch (Throwable e) {
-      while (e.getCause() != null) {
+      //noinspection InstanceofCatchParameter
+      while (e instanceof InvocationTargetException) {
         e = e.getCause();
       }
       e.printStackTrace();