Merge remote-tracking branch 'aosp/l-preview' into cm-11.0cm-11.0-XNPH05Q-tomato-9828f8e9cccm-11.0-XNPH05Q-bacon-5229c4ef56stable/cm-11.0-XNG3Cstable/cm-11.0-XNG2Sstable/cm-11.0-XNF9Xstable/cm-11.0-XNF8Ystable/cm-11.0shipping/cm-11.0cm-11.0

1 files changed, 86 insertions, 0 deletions

diff --git a/src/proguard/classfile/constant/visitor/ConstantTagFilter.java b/src/proguard/classfile/constant/visitor/ConstantTagFilter.java
new file mode 100644
index 0000000..a3fcc8a
--- /dev/null
+++ b/src/proguard/classfile/constant/visitor/ConstantTagFilter.java
@@ -0,0 +1,86 @@
+/*
+ * ProGuard -- shrinking, optimization, obfuscation, and preverification
+ *             of Java bytecode.
+ *
+ * Copyright (c) 2002-2013 Eric Lafortune (eric@graphics.cornell.edu)
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+package proguard.classfile.constant.visitor;
+
+import proguard.classfile.Clazz;
+import proguard.classfile.constant.*;
+import proguard.classfile.util.SimplifiedVisitor;
+
+/**
+ * This <code>ConstantVisitor</code> delegates its visits to one or more
+ * specified types of constants.
+ *
+ * @author Eric Lafortune
+ */
+public class ConstantTagFilter
+extends      SimplifiedVisitor
+implements   ConstantVisitor
+{
+    private final int             constantTagMask;
+    private final ConstantVisitor constantVisitor;
+
+
+    /**
+     * Creates a new ConstantTagFilter.
+     * @param constantTag     the type of constants for which visits will be
+     *                        delegated.
+     * @param constantVisitor the <code>ConstantVisitor</code> to which visits
+     *                        will be delegated.
+     */
+    public ConstantTagFilter(int             constantTag,
+                             ConstantVisitor constantVisitor)
+    {
+        this.constantTagMask = 1 << constantTag;
+        this.constantVisitor = constantVisitor;
+    }
+
+
+    /**
+     * Creates a new ConstantTagFilter.
+     * @param constantTags    the types of constants for which visits will be
+     *                        delegated.
+     * @param constantVisitor the <code>ConstantVisitor</code> to which visits
+     *                        will be delegated.
+     */
+    public ConstantTagFilter(int[]           constantTags,
+                             ConstantVisitor constantVisitor)
+    {
+        int constantTagMask = 0;
+        for (int index = 0; index < constantTags.length; index++)
+        {
+            constantTagMask |= 1 << constantTags[index];
+        }
+
+        this.constantTagMask = constantTagMask;
+        this.constantVisitor = constantVisitor;
+    }
+
+
+    // Implementations for ConstantVisitor.
+
+    public void visitAnyConstant(Clazz clazz, Constant constant)
+    {
+        if (((1 << constant.getTag()) & constantTagMask) != 0)
+        {
+            constant.accept(clazz, constantVisitor);
+        }
+    }
+}
\ No newline at end of file