Tweak how hashCode and equals works for MethodReferences

This fixes an issue where method references weren't being properly
interned when generating a dex file

1 files changed, 51 insertions, 0 deletions

diff --git a/util/src/main/java/org/jf/util/CharSequenceUtils.java b/util/src/main/java/org/jf/util/CharSequenceUtils.java
new file mode 100644
index 00000000..f78d9bee
--- /dev/null
+++ b/util/src/main/java/org/jf/util/CharSequenceUtils.java
@@ -0,0 +1,51 @@
+/*
+ * Copyright 2013, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package org.jf.util;
+
+import com.google.common.base.Function;
+import com.google.common.base.Functions;
+import com.google.common.collect.Lists;
+
+import java.util.List;
+
+public class CharSequenceUtils {
+    private static final Function<Object, String> TO_STRING = Functions.toStringFunction();
+
+    public static int listHashCode(List<? extends CharSequence> list) {
+        return Lists.transform(list, TO_STRING).hashCode();
+    }
+
+    public static boolean listEquals(List<? extends CharSequence> list1, List<? extends CharSequence> list2) {
+        return Lists.transform(list1, TO_STRING).equals(
+                Lists.transform(list2, TO_STRING));
+    }
+}