From cc3647f65b5641e36bb4051455d39a03fcecf708 Mon Sep 17 00:00:00 2001
From: Dmitry Jemerov <yole@jetbrains.com>
Date: Tue, 27 Jul 2010 20:11:41 +0400
Subject: [PATCH] don't apply loose isReferenceTo() logic of qualified
 references with unknown qualifier type to __init__ calls (otherwise we get
 very weird results when searching usages of class) (PY-1450)

---
 .../jetbrains/python/psi/impl/PyQualifiedReferenceImpl.java  | 3 ++-
 python/testData/findUsages/UnresolvedClassInit.py            | 3 +++
 python/testSrc/com/jetbrains/python/PyFindUsagesTest.java    | 5 +++++
 3 files changed, 10 insertions(+), 1 deletion(-)
 create mode 100644 python/testData/findUsages/UnresolvedClassInit.py

diff --git a/python/src/com/jetbrains/python/psi/impl/PyQualifiedReferenceImpl.java b/python/src/com/jetbrains/python/psi/impl/PyQualifiedReferenceImpl.java
index 1e08b1084544..ce7ec0db5141 100644
--- a/python/src/com/jetbrains/python/psi/impl/PyQualifiedReferenceImpl.java
+++ b/python/src/com/jetbrains/python/psi/impl/PyQualifiedReferenceImpl.java
@@ -8,6 +8,7 @@ import com.intellij.psi.PsiElement;
 import com.intellij.psi.PsiFile;
 import com.intellij.util.ArrayUtil;
 import com.intellij.util.ProcessingContext;
+import com.jetbrains.python.PyNames;
 import com.jetbrains.python.psi.*;
 import com.jetbrains.python.psi.patterns.SyntaxMatchers;
 import com.jetbrains.python.psi.resolve.*;
@@ -242,7 +243,7 @@ public class PyQualifiedReferenceImpl extends PyReferenceImpl {
     }
     final String referencedName = myElement.getReferencedName();
     if (element instanceof PyFunction && Comparing.equal(referencedName, ((PyFunction)element).getName()) &&
-        ((PyFunction)element).getContainingClass() != null) {
+        ((PyFunction)element).getContainingClass() != null && !PyNames.INIT.equals(referencedName)) {
       final PyExpression qualifier = myElement.getQualifier();
       if (qualifier != null && qualifier.getType(TypeEvalContext.fast()) == null) {
         return true;
diff --git a/python/testData/findUsages/UnresolvedClassInit.py b/python/testData/findUsages/UnresolvedClassInit.py
new file mode 100644
index 000000000000..4e5df21c202e
--- /dev/null
+++ b/python/testData/findUsages/UnresolvedClassInit.py
@@ -0,0 +1,3 @@
+class <caret>B(C):
+    def __init__(self):
+        C.__init__(self)
\ No newline at end of file
diff --git a/python/testSrc/com/jetbrains/python/PyFindUsagesTest.java b/python/testSrc/com/jetbrains/python/PyFindUsagesTest.java
index 69e02baf7f8c..e80f0333962e 100644
--- a/python/testSrc/com/jetbrains/python/PyFindUsagesTest.java
+++ b/python/testSrc/com/jetbrains/python/PyFindUsagesTest.java
@@ -54,6 +54,11 @@ public class PyFindUsagesTest extends PyLightFixtureTestCase {
     assertUsages(usages, "<caret>parm+1");
   }
 
+  public void testUnresolvedClassInit() {   // PY-1450
+    final Collection<UsageInfo> usages = myFixture.testFindUsages("findUsages/UnresolvedClassInit.py");
+    assertUsages(usages);
+  }
+
   private void assertUsages(Collection<UsageInfo> usages, String... usageTexts) {
     assertEquals(usageTexts.length, usages.size());
     List<UsageInfo> sortedUsages = new ArrayList<UsageInfo>(usages);