Index: src/org/aspectj/ajdt/internal/compiler/lookup/EclipseSourceLocation.java
===================================================================
RCS file: /home/technology/org.aspectj/modules/org.aspectj.ajdt.core/src/org/aspectj/ajdt/internal/compiler/lookup/EclipseSourceLocation.java,v
retrieving revision 1.10
diff -u -r1.10 EclipseSourceLocation.java
--- src/org/aspectj/ajdt/internal/compiler/lookup/EclipseSourceLocation.java	18 Mar 2006 12:00:02 -0000	1.10
+++ src/org/aspectj/ajdt/internal/compiler/lookup/EclipseSourceLocation.java	5 Apr 2006 10:53:10 -0000
@@ -61,6 +61,7 @@
 
 	public File getSourceFile() {
 		if (null == file) {
+			hashCode = 0;
 			if (filename==null) {
 //            if ((null == result) 
 //                || (null == result.fileName)
@@ -136,4 +137,25 @@
         if (getOffset()>=0) { sb.append("::").append(getOffset()); }
         return sb.toString();
     }
+    
+    public boolean equals(Object other) {
+        if (! (other instanceof EclipseSourceLocation)) return false;
+        EclipseSourceLocation o = (EclipseSourceLocation) other;
+        return (o.startPos == startPos) 
+        	&& (o.endPos == endPos)
+        	&& o.getSourceFile().equals(getSourceFile());
+    }
+
+	private volatile int hashCode = 0;
+    public int hashCode() {
+    	if (hashCode == 0) {
+            int result = 17;
+            result = 37*result + startPos;
+            result = 37*result + endPos;
+            result = 37*result + getSourceFile().hashCode();
+            hashCode = result;			
+		}
+        return hashCode;
+    }
+    
 }