From 53448937562673adcc8dcb1ade8f7bd5f4001984 Mon Sep 17 00:00:00 2001
From: Nathan Ridge
Date: Thu, 30 Jun 2016 18:06:07 -0400
Subject: Bug 496628 - Avoid codan markers that cover an entire class
 declaration

This fixes a regression from bug 486610 which introduced these in some cases.

Change-Id: I791528ce7f0bc061386aaa97dd9cecb7abeecd72
---
 .../cdt/codan/core/cxx/model/AbstractIndexAstChecker.java |  8 +++++++-
 .../checkers/NonVirtualDestructorCheckerTest.java         | 15 +++++++++++++++
 2 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/codan/org.eclipse.cdt.codan.core.cxx/src/org/eclipse/cdt/codan/core/cxx/model/AbstractIndexAstChecker.java b/codan/org.eclipse.cdt.codan.core.cxx/src/org/eclipse/cdt/codan/core/cxx/model/AbstractIndexAstChecker.java
index 92cbfed1b00..d1b9a8ce869 100644
--- a/codan/org.eclipse.cdt.codan.core.cxx/src/org/eclipse/cdt/codan/core/cxx/model/AbstractIndexAstChecker.java
+++ b/codan/org.eclipse.cdt.codan.core.cxx/src/org/eclipse/cdt/codan/core/cxx/model/AbstractIndexAstChecker.java
@@ -22,6 +22,7 @@ import org.eclipse.cdt.codan.core.model.IProblemLocation;
 import org.eclipse.cdt.codan.core.model.IProblemLocationFactory;
 import org.eclipse.cdt.codan.core.model.IRunnableInEditorChecker;
 import org.eclipse.cdt.core.dom.ast.IASTComment;
+import org.eclipse.cdt.core.dom.ast.IASTCompositeTypeSpecifier;
 import org.eclipse.cdt.core.dom.ast.IASTFileLocation;
 import org.eclipse.cdt.core.dom.ast.IASTImageLocation;
 import org.eclipse.cdt.core.dom.ast.IASTMacroExpansionLocation;
@@ -198,7 +199,12 @@ public abstract class AbstractIndexAstChecker extends AbstractCheckerWithProblem
 			}
 		}
 		// If the raw signature has more than one line, we highlight only the code
-		// related to the problem.
+		// related to the problem. However, if the problem is associated with a
+		// node representing a class definition, do not highlight the entire class
+		// definition, because that can result in many lines being highlighted.
+		if (astNode instanceof IASTCompositeTypeSpecifier) {
+			return locFactory.createProblemLocation(getFile(), line);
+		} 
 		int start = astLocation.getNodeOffset();
 		int end = start + astLocation.getNodeLength();
 		return locFactory.createProblemLocation(getFile(), start, end, line);
diff --git a/codan/org.eclipse.cdt.codan.core.test/src/org/eclipse/cdt/codan/core/internal/checkers/NonVirtualDestructorCheckerTest.java b/codan/org.eclipse.cdt.codan.core.test/src/org/eclipse/cdt/codan/core/internal/checkers/NonVirtualDestructorCheckerTest.java
index 89629e2f105..d795824f419 100644
--- a/codan/org.eclipse.cdt.codan.core.test/src/org/eclipse/cdt/codan/core/internal/checkers/NonVirtualDestructorCheckerTest.java
+++ b/codan/org.eclipse.cdt.codan.core.test/src/org/eclipse/cdt/codan/core/internal/checkers/NonVirtualDestructorCheckerTest.java
@@ -14,6 +14,7 @@ package org.eclipse.cdt.codan.core.internal.checkers;
 
 import org.eclipse.cdt.codan.core.test.CheckerTestCase;
 import org.eclipse.cdt.codan.internal.checkers.NonVirtualDestructor;
+import org.eclipse.core.resources.IMarker;
 
 /**
  * Test for {@link NonVirtualDestructor} class.
@@ -203,4 +204,18 @@ public class NonVirtualDestructorCheckerTest extends CheckerTestCase {
 		loadCodeAndRun(getAboveComment());
 		assertMessageContains("Foo", markers[0]);
 	}
+
+	//	class Foo {
+	//		virtual void bar();
+	//	};
+	public void testBug496628_MarkerBounds() throws Exception {
+		String code = getAboveComment();
+		loadCodeAndRun(code);
+		IMarker marker = checkErrorLine(1);
+		int start = marker.getAttribute(IMarker.CHAR_START, -1);
+		int end = marker.getAttribute(IMarker.CHAR_END, -1);
+		// The error should not cover the entire class
+		assertTrue((start == -1 && end == -1) ||  // ok, not multi-line
+				   !code.substring(start, end).contains("\n"));
+	}
 }
-- 
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