From 5599770fed0b787e48efe3c840d12959eaebff3d Mon Sep 17 00:00:00 2001
From: wisberg <wisberg>
Date: Wed, 14 May 2003 05:04:49 +0000
Subject: [PATCH] - new filter to remove arbitrary elements from diffs   (used
 to not report unexpected info messages in diffs)

---
 .../src/org/aspectj/testing/util/Diffs.java   | 40 ++++++++++++++++++-
 1 file changed, 39 insertions(+), 1 deletion(-)

diff --git a/testing/src/org/aspectj/testing/util/Diffs.java b/testing/src/org/aspectj/testing/util/Diffs.java
index 7f77afc64..4e493534f 100644
--- a/testing/src/org/aspectj/testing/util/Diffs.java
+++ b/testing/src/org/aspectj/testing/util/Diffs.java
@@ -13,6 +13,7 @@
 
 package org.aspectj.testing.util;
 
+import java.util.*;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.Comparator;
@@ -26,6 +27,11 @@ import org.aspectj.bridge.MessageUtil;
 /** result struct for expected/actual diffs for Collection */
 public class Diffs {
 
+    public static final Filter ACCEPT_ALL = new Filter() {
+        public boolean accept(Object o) {
+            return true;
+        }
+    };
      // XXX List -> Collection b/c comparator orders 
     public static final Diffs NONE 
         = new Diffs("NONE", Collections.EMPTY_LIST, Collections.EMPTY_LIST);
@@ -50,7 +56,21 @@ public class Diffs {
                       || (0 != this.unexpected.size()));
     }
 
-    public Diffs(String label, List expected, List actual, Comparator comparator) {
+    public Diffs(
+        String label, 
+        List expected, 
+        List actual, 
+        Comparator comparator) {
+        this(label, expected, actual, comparator, ACCEPT_ALL, ACCEPT_ALL);
+    }
+    
+    public Diffs(
+        String label, 
+        List expected, 
+        List actual, 
+        Comparator comparator,
+        Filter missingFilter,
+        Filter unexpectedFilter) {
         label = label.trim();
         if (null == label) {
             label = ": ";
@@ -62,7 +82,21 @@ public class Diffs {
         ArrayList unexpect = new ArrayList();
         
         org.aspectj.testing.util.LangUtil.makeSoftDiffs(expected, actual, miss, unexpect, comparator);
+        if (null != missingFilter) {
+            for (ListIterator iter = miss.listIterator(); iter.hasNext();) {
+                if (!missingFilter.accept(iter.next())) {
+                    iter.remove();
+                }
+            }
+        }
         missing = Collections.unmodifiableList(miss);
+        if (null != unexpectedFilter) {
+            for (ListIterator iter = unexpect.listIterator(); iter.hasNext();) {
+                if (!unexpectedFilter.accept(iter.next())) {
+                    iter.remove();
+                }
+            }
+        }
         unexpected = Collections.unmodifiableList(unexpect);
         different = ((0 != this.missing.size()) 
                       || (0 != this.unexpected.size()));
@@ -99,5 +133,9 @@ public class Diffs {
         return label + "(unexpected=" + unexpected.size() 
             + ", missing=" + missing.size() + ")";
     }
+    public static interface Filter {
+        /** @return true to keep input in list of messages */
+        boolean accept(Object input);
+    }
 }
 
-- 
2.39.5