override/implement: do not add type parameters from super method if supercalss was erased (IDEA-142453)

java/java-impl/src/com/intellij/codeInsight/generation/GenerateMembersUtil.java

@@ -312,7 +312,7 @@ public class GenerateMembersUtil {
                                                          @Nullable PsiTypeParameterList targetTypeParameterList,
                                                          @NotNull PsiSubstitutor substitutor, 
                                                          @NotNull PsiMethod sourceMethod) {
-    if (sourceTypeParameterList == null || targetTypeParameterList == null) {
+    if (sourceTypeParameterList == null || targetTypeParameterList == null || PsiUtil.isRawSubstitutor(sourceMethod, substitutor)) {
       return substitutor;
     }
 

java/java-tests/testData/codeInsight/overrideImplement/afterRawInheritanceWithMethodTypeParameters.java

@@ -0,0 +1,12 @@
+class Foo<T> {
+  <S> S foo(T foo) {
+    return null;
+  }
+}
+
+class Bar<S> extends Foo {
+    @Override
+    Object foo(Object foo) {
+        <selection>return super.foo(foo);</selection>
+    }
+}

java/java-tests/testData/codeInsight/overrideImplement/beforeRawInheritanceWithMethodTypeParameters.java

@@ -0,0 +1,9 @@
+class Foo<T> {
+  <S> S foo(T foo) {
+    return null;
+  }
+}
+
+class Bar<S> extends Foo {
+  <caret>
+}

java/java-tests/testSrc/com/intellij/codeInsight/OverrideImplement15Test.java

@@ -16,6 +16,7 @@
 package com.intellij.codeInsight;
 
 import com.intellij.codeInsight.generation.JavaOverrideMethodsHandler;
+import com.intellij.codeInsight.generation.OverrideImplementExploreUtil;
 import com.intellij.codeInsight.generation.OverrideImplementUtil;
 import com.intellij.codeInsight.generation.PsiMethodMember;
 import com.intellij.codeInsight.intention.impl.ImplementAbstractMethodHandler;
@@ -68,6 +69,7 @@ public class OverrideImplement15Test extends LightCodeInsightTestCase {
   public void testMultipleInterfaceInheritance() { doTest(false); }
   public void testResolveTypeParamConflict() { doTest(false); }
   public void testRawInheritance() { doTest(false); }
+  public void testRawInheritanceWithMethodTypeParameters() { doTest(false); }
 
   public void testLongFinalParameterList() {
     CodeStyleSettings codeStyleSettings = CodeStyleSettingsManager.getSettings(getProject()).clone();
@@ -156,7 +158,8 @@ public class OverrideImplement15Test extends LightCodeInsightTestCase {
       assert superClass != null;
       PsiMethod method = superClass.getMethods()[0];
       final PsiSubstitutor substitutor = TypeConversionUtil.getSuperClassSubstitutor(superClass, psiClass, PsiSubstitutor.EMPTY);
-      final List<PsiMethodMember> candidates = Collections.singletonList(new PsiMethodMember(method, substitutor));
+      final List<PsiMethodMember> candidates = Collections.singletonList(new PsiMethodMember(method, 
+                                                                                             OverrideImplementExploreUtil.correctSubstitutor(method, substitutor)));
       OverrideImplementUtil.overrideOrImplementMethodsInRightPlace(getEditor(), psiClass, candidates, copyJavadoc, true);
     }
     else {