1 files changed, 0 insertions, 156 deletions
diff --git a/src/proguard/optimize/peephole/UnreachableExceptionRemover.java b/src/proguard/optimize/peephole/UnreachableExceptionRemover.java
deleted file mode 100644
index 150c4c5..0000000
--- a/src/proguard/optimize/peephole/UnreachableExceptionRemover.java
+++ /dev/null
@@ -1,156 +0,0 @@
-/*
- * 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.peephole;
-
-import proguard.classfile.*;
-import proguard.classfile.attribute.*;
-import proguard.classfile.attribute.visitor.*;
-import proguard.classfile.instruction.*;
-import proguard.classfile.util.SimplifiedVisitor;
-import proguard.optimize.info.ExceptionInstructionChecker;
-
-/**
- * This AttributeVisitor removes exception handlers that are unreachable in the
- * code attributes that it visits.
- *
- * @author Eric Lafortune
- */
-public class UnreachableExceptionRemover
-extends      SimplifiedVisitor
-implements   AttributeVisitor,
-             ExceptionInfoVisitor
-{
-    private final ExceptionInfoVisitor extraExceptionInfoVisitor;
-
-
-    /**
-     * Creates a new UnreachableExceptionRemover.
-     */
-    public UnreachableExceptionRemover()
-    {
-        this(null);
-    }
-
-
-    /**
-     * Creates a new UnreachableExceptionRemover.
-     * @param extraExceptionInfoVisitor an optional extra visitor for all
-     *                                  removed exceptions.
-     */
-    public UnreachableExceptionRemover(ExceptionInfoVisitor extraExceptionInfoVisitor)
-    {
-        this.extraExceptionInfoVisitor = extraExceptionInfoVisitor;
-    }
-
-
-    // Implementations for AttributeVisitor.
-
-    public void visitAnyAttribute(Clazz clazz, Attribute attribute) {}
-
-
-    public void visitCodeAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute)
-    {
-        // Go over the exception table.
-        codeAttribute.exceptionsAccept(clazz, method, this);
-
-        // Remove exceptions with empty code blocks.
-        codeAttribute.u2exceptionTableLength =
-            removeEmptyExceptions(codeAttribute.exceptionTable,
-                                  codeAttribute.u2exceptionTableLength);
-    }
-
-
-    // Implementations for ExceptionInfoVisitor.
-
-    public void visitExceptionInfo(Clazz clazz, Method method, CodeAttribute codeAttribute, ExceptionInfo exceptionInfo)
-    {
-        if (!mayThrowExceptions(clazz,
-                                method,
-                                codeAttribute,
-                                exceptionInfo.u2startPC,
-                                exceptionInfo.u2endPC))
-        {
-            // Make the code block empty.
-            exceptionInfo.u2endPC = exceptionInfo.u2startPC;
-
-            if (extraExceptionInfoVisitor != null)
-            {
-                extraExceptionInfoVisitor.visitExceptionInfo(clazz, method, codeAttribute, exceptionInfo);
-            }
-        }
-    }
-
-
-    // Small utility methods.
-
-    /**
-     * Returns whether the specified block of code may throw exceptions.
-     */
-    private boolean mayThrowExceptions(Clazz         clazz,
-                                       Method        method,
-                                       CodeAttribute codeAttribute,
-                                       int           startOffset,
-                                       int           endOffset)
-    {
-        byte[] code = codeAttribute.code;
-
-        // Go over all instructions.
-        int offset = startOffset;
-        while (offset < endOffset)
-        {
-            // Get the current instruction.
-            Instruction instruction = InstructionFactory.create(code, offset);
-
-            // Check if it may be throwing exceptions.
-            if (instruction.mayThrowExceptions())
-            {
-                return true;
-            }
-
-            // Go to the next instruction.
-            offset += instruction.length(offset);
-        }
-
-        return false;
-    }
-
-
-    /**
-     * Returns the given list of exceptions, without the ones that have empty
-     * code blocks.
-     */
-    private int removeEmptyExceptions(ExceptionInfo[] exceptionInfos,
-                                      int             exceptionInfoCount)
-    {
-        // Overwrite all empty exceptions.
-        int newIndex = 0;
-        for (int index = 0; index < exceptionInfoCount; index++)
-        {
-            ExceptionInfo exceptionInfo = exceptionInfos[index];
-            if (exceptionInfo.u2startPC < exceptionInfo.u2endPC)
-            {
-                exceptionInfos[newIndex++] = exceptionInfo;
-            }
-        }
-
-        return newIndex;
-    }
-}