1 files changed, 93 insertions, 0 deletions
diff --git a/third_party/java/proguard/proguard5.3.3/src/proguard/optimize/info/SuperInvocationMarker.java b/third_party/java/proguard/proguard5.3.3/src/proguard/optimize/info/SuperInvocationMarker.java
new file mode 100644
index 0000000000..63e6225504
--- /dev/null
+++ b/third_party/java/proguard/proguard5.3.3/src/proguard/optimize/info/SuperInvocationMarker.java
@@ -0,0 +1,93 @@
+/*
+ * ProGuard -- shrinking, optimization, obfuscation, and preverification
+ *             of Java bytecode.
+ *
+ * Copyright (c) 2002-2017 Eric Lafortune @ GuardSquare
+ *
+ * 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.RefConstant;
+import proguard.classfile.constant.visitor.ConstantVisitor;
+import proguard.classfile.instruction.*;
+import proguard.classfile.instruction.visitor.InstructionVisitor;
+import proguard.classfile.util.SimplifiedVisitor;
+
+/**
+ * This InstructionVisitor marks all methods that invoke super methods (other
+ * than initializers) from the instructions that it visits.
+ *
+ * @author Eric Lafortune
+ */
+public class SuperInvocationMarker
+extends      SimplifiedVisitor
+implements   InstructionVisitor,
+             ConstantVisitor
+{
+    private boolean invokesSuperMethods;
+
+
+    // 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_INVOKESPECIAL)
+        {
+            invokesSuperMethods = false;
+
+            clazz.constantPoolEntryAccept(constantInstruction.constantIndex, this);
+
+            if (invokesSuperMethods)
+            {
+                setInvokesSuperMethods(method);
+            }
+        }
+    }
+
+
+    // Implementations for ConstantVisitor.
+
+    public void visitAnyMethodrefConstant(Clazz clazz, RefConstant refConstant)
+    {
+        invokesSuperMethods =
+            !clazz.equals(refConstant.referencedClass) &&
+            !refConstant.getName(clazz).equals(ClassConstants.METHOD_NAME_INIT);
+    }
+
+
+    // Small utility methods.
+
+    private static void setInvokesSuperMethods(Method method)
+    {
+        MethodOptimizationInfo info = MethodOptimizationInfo.getMethodOptimizationInfo(method);
+        if (info != null)
+        {
+            info.setInvokesSuperMethods();
+        }
+    }
+
+
+    public static boolean invokesSuperMethods(Method method)
+    {
+        MethodOptimizationInfo info = MethodOptimizationInfo.getMethodOptimizationInfo(method);
+        return info == null || info.invokesSuperMethods();
+    }
+}