1 files changed, 79 insertions, 0 deletions
diff --git a/src/proguard/optimize/info/DynamicInvocationMarker.java b/src/proguard/optimize/info/DynamicInvocationMarker.java
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+++ b/src/proguard/optimize/info/DynamicInvocationMarker.java
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+/*
+ * ProGuard -- shrinking, optimization, obfuscation, and preverification
+ *             of Java bytecode.
+ *
+ * Copyright (c) 2002-2014 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.optimize.info;
+
+import proguard.classfile.*;
+import proguard.classfile.attribute.CodeAttribute;
+import proguard.classfile.constant.*;
+import proguard.classfile.constant.visitor.ConstantVisitor;
+import proguard.classfile.instruction.*;
+import proguard.classfile.instruction.visitor.InstructionVisitor;
+import proguard.classfile.util.SimplifiedVisitor;
+import proguard.classfile.visitor.*;
+
+/**
+ * This InstructionVisitor marks whether the methods whose instructions it
+ * visits contain the invokedynamic instruction.
+ *
+ * @author Eric Lafortune
+ */
+public class DynamicInvocationMarker
+extends      SimplifiedVisitor
+implements   InstructionVisitor,
+             ConstantVisitor,
+             ClassVisitor,
+             MemberVisitor
+{
+    // Implementations for InstructionVisitor.
+
+    public void visitAnyInstruction(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, Instruction instruction) {}
+
+
+    public void visitConstantInstruction(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, ConstantInstruction constantInstruction)
+    {
+        if (constantInstruction.opcode == InstructionConstants.OP_INVOKEDYNAMIC)
+        {
+            setInvokesDynamically(method);
+        }
+    }
+
+
+    // Small utility methods.
+
+    private static void setInvokesDynamically(Method method)
+    {
+        MethodOptimizationInfo info = MethodOptimizationInfo.getMethodOptimizationInfo(method);
+        if (info != null)
+        {
+            info.setInvokesDynamically();
+        }
+    }
+
+
+    /**
+     * Returns whether the given method calls the invokedynamic instruction.
+     */
+    public static boolean invokesDynamically(Method method)
+    {
+        MethodOptimizationInfo info = MethodOptimizationInfo.getMethodOptimizationInfo(method);
+        return info == null || info.invokesDynamically();
+    }
+}