redundant type args: process nested calls (IDEA-117945)

java/java-analysis-impl/src/com/intellij/codeInspection/miscGenerics/RedundantTypeArgsInspection.java

@@ -74,14 +74,18 @@ public class RedundantTypeArgsInspection extends GenericsInspectionToolBase {
   public ProblemDescriptor[] getDescriptions(@NotNull PsiElement place, @NotNull final InspectionManager inspectionManager, boolean isOnTheFly) {
     final List<ProblemDescriptor> problems = new ArrayList<ProblemDescriptor>();
     place.accept(new JavaRecursiveElementWalkingVisitor() {
-      @Override public void visitMethodCallExpression(PsiMethodCallExpression expression) {
+      @Override
+      public void visitMethodCallExpression(PsiMethodCallExpression expression) {
+        super.visitMethodCallExpression(expression);
         final PsiType[] typeArguments = expression.getTypeArguments();
         if (typeArguments.length > 0) {
           checkCallExpression(expression.getMethodExpression(), typeArguments, expression, inspectionManager, problems);
         }
       }
 
-      @Override public void visitNewExpression(PsiNewExpression expression) {
+      @Override
+      public void visitNewExpression(PsiNewExpression expression) {
+        super.visitNewExpression(expression);
         final PsiType[] typeArguments = expression.getTypeArguments();
         if (typeArguments.length > 0) {
           final PsiJavaCodeReferenceElement classReference = expression.getClassReference();

java/java-tests/testData/inspection/redundantTypeArgs/NestedCalls.java

@@ -0,0 +1,18 @@
+import java.io.Serializable;
+
+final class Expected {
+  public static <P extends Serializable> Expected make(final P good) {
+    return null;
+  }
+}
+
+interface Serializer {
+  <T> T deserialize(final Class<T> type);
+}
+
+class FooBar {
+  <T extends Serializable> void invoke(final Class<T> rpc, final Serializer serializer) {
+    Expected.make(serializer.<warning descr="Explicit type arguments can be inferred"><T></warning>deserialize(rpc));
+  }
+}
+

java/java-tests/testSrc/com/intellij/codeInspection/RedundantTypeArgsInspectionTest.java

@@ -37,4 +37,8 @@ public class RedundantTypeArgsInspectionTest extends JavaCodeInsightFixtureTestC
   public void testBoundInference() throws Throwable {
     doTest();
   }
+
+  public void testNestedCalls() throws Throwable {
+    doTest();
+  }
 }