From 11675322eeaaf63bc0c39de4a6420f12e2233284 Mon Sep 17 00:00:00 2001
From: Alexey Sedunov <alexey.sedunov@jetbrains.com>
Date: Fri, 27 Mar 2015 16:23:22 +0300
Subject: [PATCH] Find Usages: Fix exception in the search of class with
 default parameters in primary constructor

---
 .../findUsages/handlers/KotlinFindClassUsagesHandler.kt   | 2 ++
 .../primaryConstructorWithDefaultParams.0.kt              | 8 ++++++++
 .../primaryConstructorWithDefaultParams.results.txt       | 2 ++
 .../kotlin/findUsages/JetFindUsagesTestGenerated.java     | 6 ++++++
 4 files changed, 18 insertions(+)
 create mode 100644 idea/testData/findUsages/kotlin/findClassUsages/primaryConstructorWithDefaultParams.0.kt
 create mode 100644 idea/testData/findUsages/kotlin/findClassUsages/primaryConstructorWithDefaultParams.results.txt

diff --git a/idea/src/org/jetbrains/kotlin/idea/findUsages/handlers/KotlinFindClassUsagesHandler.kt b/idea/src/org/jetbrains/kotlin/idea/findUsages/handlers/KotlinFindClassUsagesHandler.kt
index bfe02c2a785..37933bbd722 100644
--- a/idea/src/org/jetbrains/kotlin/idea/findUsages/handlers/KotlinFindClassUsagesHandler.kt
+++ b/idea/src/org/jetbrains/kotlin/idea/findUsages/handlers/KotlinFindClassUsagesHandler.kt
@@ -43,6 +43,7 @@ import com.intellij.find.findUsages.JavaFindUsagesHandlerFactory
 import com.intellij.psi.PsiMethod
 import com.intellij.psi.search.searches.MethodReferencesSearch
 import com.intellij.util.CommonProcessors
+import org.jetbrains.kotlin.asJava.KotlinLightMethod
 import org.jetbrains.kotlin.asJava.toLightClass
 import org.jetbrains.kotlin.idea.search.usagesSearch.processDelegationCallConstructorUsages
 
@@ -93,6 +94,7 @@ public class KotlinFindClassUsagesHandler(
             if (kotlinOptions.searchConstructorUsages) {
                 val constructors = classOrObject.toLightClass()?.getConstructors() ?: PsiMethod.EMPTY_ARRAY
                 for (constructor in constructors) {
+                    if (constructor !is KotlinLightMethod) continue
                     constructor.processDelegationCallConstructorUsages(constructor.getUseScope()) {
                         it.getCalleeExpression()?.getReference()?.let { KotlinFindUsagesHandler.processUsage(uniqueProcessor, it) }
                     }
diff --git a/idea/testData/findUsages/kotlin/findClassUsages/primaryConstructorWithDefaultParams.0.kt b/idea/testData/findUsages/kotlin/findClassUsages/primaryConstructorWithDefaultParams.0.kt
new file mode 100644
index 00000000000..4971773a259
--- /dev/null
+++ b/idea/testData/findUsages/kotlin/findClassUsages/primaryConstructorWithDefaultParams.0.kt
@@ -0,0 +1,8 @@
+// PSI_ELEMENT: org.jetbrains.kotlin.psi.JetClass
+// OPTIONS: usages, constructorUsages
+class <caret>A(a: Int = 1)
+
+fun test() {
+    A(0)
+    A()
+}
\ No newline at end of file
diff --git a/idea/testData/findUsages/kotlin/findClassUsages/primaryConstructorWithDefaultParams.results.txt b/idea/testData/findUsages/kotlin/findClassUsages/primaryConstructorWithDefaultParams.results.txt
new file mode 100644
index 00000000000..6c922e196f9
--- /dev/null
+++ b/idea/testData/findUsages/kotlin/findClassUsages/primaryConstructorWithDefaultParams.results.txt
@@ -0,0 +1,2 @@
+New instance creation (6: 5) A(0)
+New instance creation (7: 5) A()
\ No newline at end of file
diff --git a/idea/tests/org/jetbrains/kotlin/findUsages/JetFindUsagesTestGenerated.java b/idea/tests/org/jetbrains/kotlin/findUsages/JetFindUsagesTestGenerated.java
index 9a7e260a0e8..9d3fab5c629 100644
--- a/idea/tests/org/jetbrains/kotlin/findUsages/JetFindUsagesTestGenerated.java
+++ b/idea/tests/org/jetbrains/kotlin/findUsages/JetFindUsagesTestGenerated.java
@@ -527,6 +527,12 @@ public class JetFindUsagesTestGenerated extends AbstractJetFindUsagesTest {
                 String fileName = JetTestUtils.navigationMetadata("idea/testData/findUsages/kotlin/findClassUsages/kotlinTraitDerivedTraits.0.kt");
                 doTest(fileName);
             }
+
+            @TestMetadata("primaryConstructorWithDefaultParams.0.kt")
+            public void testPrimaryConstructorWithDefaultParams() throws Exception {
+                String fileName = JetTestUtils.navigationMetadata("idea/testData/findUsages/kotlin/findClassUsages/primaryConstructorWithDefaultParams.0.kt");
+                doTest(fileName);
+            }
         }
 
         @TestMetadata("idea/testData/findUsages/kotlin/findFunctionUsages")