new inference: proceed with additional constraints when no nested calls available (IDEA-124424)

java/java-psi-impl/src/com/intellij/psi/impl/source/resolve/graphInference/InferenceSession.java

@@ -221,7 +221,8 @@ public class InferenceSession {
         return prepareSubstitution();
       }
 
-      if (parameters != null && args != null && !MethodCandidateInfo.isOverloadCheck()) {
+      if (parameters != null && args != null &&
+          !MethodCandidateInfo.ourOverloadGuard.currentStack().contains(PsiUtil.skipParenthesizedExprUp(parent.getParent()))) {
         final Set<ConstraintFormula> additionalConstraints = new LinkedHashSet<ConstraintFormula>();
         if (parameters.length > 0) {
           collectAdditionalConstraints(parameters, args, properties.getMethod(), PsiSubstitutor.EMPTY, additionalConstraints, properties.isVarargs(), true);

java/java-psi-impl/src/com/intellij/psi/impl/source/tree/java/PsiConditionalExpressionImpl.java

@@ -92,7 +92,7 @@ public class PsiConditionalExpressionImpl extends ExpressionPsiElement implement
 
     if (PsiUtil.isLanguageLevel8OrHigher(this) && 
         PsiPolyExpressionUtil.isPolyExpression(this) && 
-        !MethodCandidateInfo.ourOverloadGuard.currentStack().contains(this.getParent())) {
+        !MethodCandidateInfo.ourOverloadGuard.currentStack().contains(PsiUtil.skipParenthesizedExprUp(this.getParent()))) {
       //15.25.3 Reference Conditional Expressions 
       // The type of a poly reference conditional expression is the same as its target type.
       return InferenceSession.getTargetType(this);

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/lambda/newLambda/IDEA124424.java

@@ -0,0 +1,12 @@
+import java.util.stream.Stream;
+
+import static java.util.stream.Collectors.toList;
+
+class Main {
+  void bar(final Stream<Object> objectStream) {
+    foo(objectStream.map(o -> "str").collect(toList()));
+  }
+
+  void foo(Iterable<?> k){}
+  void foo(String s){}
+}

java/java-tests/testSrc/com/intellij/codeInsight/daemon/lambda/NewLambdaHighlightingTest.java

@@ -92,6 +92,7 @@ public class NewLambdaHighlightingTest extends LightDaemonAnalyzerTestCase {
   public void testIDEA124961() { doTest(); }
   public void testIDEA126109() { doTest(); }
   public void testIDEA126809() { doTest(); }
+  public void testIDEA124424() { doTest(); }
 
   public void testIDEA127596() throws Exception {
     doTest();