support navigation in stacktraces where class fqns are prefixed with module name (IDEA-165456)

java/java-tests/testSrc/com/intellij/navigation/ExceptionFilterTest.java

@@ -0,0 +1,38 @@
+/*
+ * Copyright 2000-2016 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.intellij.navigation;
+
+import com.intellij.execution.filters.ExceptionInfoCache;
+import com.intellij.execution.filters.ExceptionWorker;
+import com.intellij.psi.PsiClass;
+import com.intellij.psi.search.GlobalSearchScope;
+import com.intellij.testFramework.fixtures.JavaCodeInsightFixtureTestCase;
+
+public class ExceptionFilterTest extends JavaCodeInsightFixtureTestCase {
+
+  public void testJava9ModulePrefixed() throws Throwable {
+    PsiClass psiClass = myFixture.addClass("package p; public class A {\n" +
+                                          "  public void foo() {}\n" +
+                                          "}");
+    ExceptionWorker worker = new ExceptionWorker(new ExceptionInfoCache(GlobalSearchScope.projectScope(getProject())));
+    String line = "at mod.name/p.A.foo(A.java:2)";
+    worker.execute(line, line.length());
+    PsiClass aClass = worker.getPsiClass();
+    assertNotNull(aClass);
+    assertEquals(psiClass, aClass);
+  }
+}

java/openapi/src/com/intellij/execution/filters/ExceptionWorker.java

@@ -196,9 +196,11 @@ public class ExceptionWorker {
     
     final int dotIdx = line.lastIndexOf('.', lParenIdx);
     if (dotIdx < 0 || dotIdx < startIdx) return null;
+    int moduleIdx = line.indexOf('/');
+    int classNameIdx = moduleIdx > -1 && moduleIdx < lParenIdx ? moduleIdx + 1 : startIdx + 1 + (startIdx >= 0 ? AT.length() : 0);
 
     // class, method, link
-    return Trinity.create(new TextRange(startIdx + 1 + (startIdx >= 0 ? AT.length() : 0), handleSpaces(line, dotIdx, -1, true)),
+    return Trinity.create(new TextRange(classNameIdx, handleSpaces(line, dotIdx, -1, true)),
                           new TextRange(handleSpaces(line, dotIdx + 1, 1, true), handleSpaces(line, lParenIdx + 1, -1, true)),
                           new TextRange(lParenIdx, rParenIdx));
   }