assert error/NonExistentClass is only generated when mode = SIGNATURES

move classBuilderMode to injector and GenerationState from ClassBuilder

compiler/jet.as.java.psi/src/org/jetbrains/jet/asJava/JetLightClass.java

@@ -44,6 +44,7 @@ import org.jetbrains.annotations.NotNull;
 import org.jetbrains.jet.analyzer.AnalyzeExhaust;
 import org.jetbrains.jet.codegen.ClassBuilder;
 import org.jetbrains.jet.codegen.ClassBuilderFactory;
+import org.jetbrains.jet.codegen.ClassBuilderMode;
 import org.jetbrains.jet.codegen.CompilationErrorHandler;
 import org.jetbrains.jet.codegen.GenerationState;
 import org.jetbrains.jet.lang.psi.JetFile;
@@ -141,6 +142,12 @@ public class JetLightClass extends AbstractLightClass implements JetJavaMirrorMa
         final Stack<StubElement> stubStack = new Stack<StubElement>();
 
         final ClassBuilderFactory builderFactory = new ClassBuilderFactory() {
+            @NotNull
+            @Override
+            public ClassBuilderMode getClassBuilderMode() {
+                return ClassBuilderMode.SIGNATURES;
+            }
+
             @Override
             public ClassBuilder newClassBuilder() {
                 return new StubClassBuilder(stubStack);

compiler/jet.as.java.psi/src/org/jetbrains/jet/asJava/StubClassBuilder.java

@@ -107,9 +107,4 @@ public class StubClassBuilder extends ClassBuilder {
         }
         super.done();
     }
-
-    @Override
-    public Mode generateCode() {
-        return Mode.SIGNATURES;
-    }
 }