diff --git a/debug/org.eclipse.cdt.debug.core/src/org/eclipse/cdt/debug/core/ICSourceLocator.java b/debug/org.eclipse.cdt.debug.core/src/org/eclipse/cdt/debug/core/ICSourceLocator.java
index 61016174117..dba4157b8f6 100644
--- a/debug/org.eclipse.cdt.debug.core/src/org/eclipse/cdt/debug/core/ICSourceLocator.java
+++ b/debug/org.eclipse.cdt.debug.core/src/org/eclipse/cdt/debug/core/ICSourceLocator.java
@@ -5,7 +5,9 @@
  */
 package org.eclipse.cdt.debug.core;
 
+import org.eclipse.core.resources.IFile;
 import org.eclipse.core.resources.IProject;
+import org.eclipse.core.resources.IResource;
 import org.eclipse.debug.core.DebugException;
 import org.eclipse.debug.core.model.ISourceLocator;
 
@@ -46,4 +48,39 @@ public interface ICSourceLocator extends ISourceLocator
 	 * 		   or -1 if line number information is unavailable
 	 */
 	int getLineNumber( IStackFrameInfo frameInfo );
-}
+
+	/**
+	 * Returns a source element that corresponds to the given file name, or
+	 * <code>null</code> if a source element could not be located.
+	 * 
+	 * @param fileName the file name for which to locate source
+	 * @return an object representing a source element. 
+	 */
+	Object getSourceElement( String fileName );
+	
+	/**
+	 * Returns a source element that corresponds to the given function, or
+	 * <code>null</code> if a source element could not be located.
+	 * 
+	 * @param function the function name for which to locate source
+	 * @return an object representing a source element. 
+	 */
+	Object getSourceElementForFunection( String function );
+	
+	/**
+	 * Returns a source element that corresponds to the given address, or
+	 * <code>null</code> if a source element could not be located.
+	 * 
+	 * @param address the address for which to locate source
+	 * @return an object representing a source element. 
+	 */
+	Object getSourceElementForAddress( long address );
+	
+	/**
+	 * Returns whether the given resource is contained in this source locator.
+	 * 
+	 * @param resource the resource
+	 * @return whether the given resource is contained in this source locator
+	 */
+	boolean contains( IResource resource ); 
+}
\ No newline at end of file
diff --git a/debug/org.eclipse.cdt.debug.core/src/org/eclipse/cdt/debug/internal/core/CSourceLocator.java b/debug/org.eclipse.cdt.debug.core/src/org/eclipse/cdt/debug/internal/core/CSourceLocator.java
index 4ff09bf8440..8adb87f484b 100644
--- a/debug/org.eclipse.cdt.debug.core/src/org/eclipse/cdt/debug/internal/core/CSourceLocator.java
+++ b/debug/org.eclipse.cdt.debug.core/src/org/eclipse/cdt/debug/internal/core/CSourceLocator.java
@@ -215,4 +215,78 @@ public class CSourceLocator implements ICSourceLocator
 		}
 		return null;		
 	}
+
+	/* (non-Javadoc)
+	 * @see org.eclipse.cdt.debug.core.ICSourceLocator#getSourceElement(String)
+	 */
+	public Object getSourceElement( String fileName )
+	{
+		return findFile( fProject, fileName );
+	}
+
+	/* (non-Javadoc)
+	 * @see org.eclipse.cdt.debug.core.ICSourceLocator#getSourceElementForAddress(long)
+	 */
+	public Object getSourceElementForAddress( long address )
+	{
+		return null;
+	}
+
+	/* (non-Javadoc)
+	 * @see org.eclipse.cdt.debug.core.ICSourceLocator#getSourceElementForFunection(String)
+	 */
+	public Object getSourceElementForFunection( String function )
+	{
+		return null;
+	}
+
+	/* (non-Javadoc)
+	 * @see org.eclipse.cdt.debug.core.ICSourceLocator#contains(IResource)
+	 */
+	public boolean contains( IResource resource )
+	{
+		if ( resource instanceof IProject )
+		{
+			if ( fProject.equals( resource ) )
+			{
+				return true;
+			}
+			IProject[] projects = getReferencedProjects();
+			for ( int i = 0; i < projects.length; ++i )
+			{
+				if ( projects[i].equals( resource ) )
+				{
+					return true;
+				}
+			}
+			return false;
+		}
+		if ( fProject.exists( resource.getFullPath() ) )
+		{
+			return true;
+		}
+		IProject[] projects = getReferencedProjects();
+		for ( int i = 0; i < projects.length; ++i )
+		{
+			if ( projects[i].exists( resource.getFullPath() ) )
+			{
+				return true;
+			}
+		}
+		return false;
+	}
+	
+	protected IProject[] getReferencedProjects()
+	{
+		IProject[] projects = new IProject[0];
+		try
+		{
+			projects = fProject.getReferencedProjects();
+		}
+		catch( CoreException e )
+		{
+			CDebugCorePlugin.log( e );
+		}
+		return projects;
+	}
 }