/*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html.
*
* This file is a derivative of code released under the terms listed below.
*
*/
/*
*
* Copyright (c) 2009-2012,
*
* Adam Fuchs <afuchs@cs.umd.edu>
* Avik Chaudhuri <avik@cs.umd.edu>
* Steve Suh <suhsteve@gmail.com>
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. 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.
*
* 3. The names of the contributors may not 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 com.ibm.wala.dalvik.dex.instructions;
import org.jf.dexlib.Code.Opcode;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.ibm.wala.dalvik.classLoader.DexIMethod;
public abstract class Instruction {
public static class Visitor {
private static final Logger logger = LoggerFactory.getLogger(Instruction.Visitor.class);
public void visitArrayLength(ArrayLength instruction) {
logger.error("visitArrayLength not overridden");
}
public void visitArrayGet(ArrayGet instruction) {
logger.error("visitArrayGet not overridden");
}
public void visitArrayPut(ArrayPut instruction) {
logger.error("visitArrayPut not overridden");
}
public void visitArrayFill(ArrayFill instruction) {
logger.error("visitArrayFill not overridden");
}
public void visitBinaryOperation(BinaryOperation instruction) {
logger.error("visitBinaryOperation not overridden");
}
public void visitBinaryLiteral(BinaryLiteralOperation binaryLiteralOperation) {
logger.error("visitBinaryLiteral not overridden");
}
public void visitBranch(Branch instruction) {
logger.error("visitBranch not overridden");
}
public void visitCheckCast(CheckCast checkCast) {
logger.error("visitCheckCast not overridden");
}
public void visitConstant(Constant instruction) {
logger.error("visitConstant not overridden");
}
public void visitGetField(GetField instruction) {
logger.error("visitGetField not overridden");
}
public void visitGoto(Goto inst) {
logger.error("visitGoto not overridden");
}
public void visitInstanceof(InstanceOf instruction) {
logger.error("visitInstanceof not overridden");
}
public void visitInvoke(Invoke instruction) {
logger.error("visitInvoke not overridden");
}
public void visitMonitor(Monitor instruction) {
logger.error("visitMonitor not overridden");
}
public void visitNew(New instruction) {
logger.error("visitNew not overridden");
}
public void visitNewArray(NewArray newArray) {
logger.error("visitNewArray not overridden");
}
public void visitNewArrayFilled(NewArrayFilled newArrayFilled) {
logger.error("visitNewArrayFilled not overridden");
}
public void visitPutField(PutField instruction) {
logger.error("visitPutField not overridden");
}
public void visitReturn(Return return1) {
logger.error("visitReturn not overridden");
}
public void visitSwitch(Switch instruction) {
logger.error("visitSwitch not overridden");
}
public void visitThrow(Throw instruction) {
logger.error("visitThrow not overridden");
}
public void visitUnaryOperation(UnaryOperation instruction) {
logger.error("visitUnaryOperation not overridden");
}
}
public final int pc;
final protected Opcode opcode;
final protected DexIMethod method;
public final static int[] noInstructions = new int[0];
protected Instruction(int pc, Opcode op, DexIMethod method)
{
this.pc = pc;
this.opcode = op;
this.method = method;
}
/**
* True if the instruction can continue.
* @see com.ibm.wala.shrikeBT.IInstruction#isFallThrough()
*/
public boolean isFallThrough() {
return opcode.canContinue();
}
/**
* True if the instruction can throw an exception
* @see com.ibm.wala.shrikeBT.IInstruction#isPEI()
*/
public boolean isPEI() {
return opcode.canThrow();
}
/**
* @return The DexIMethod which contains this instruction.
*/
public DexIMethod getParentMethod(){
return method;
}
/**
* @return The opcode associated with this instruction.
*/
public Opcode getOpcode(){
return opcode;
}
public int[] getBranchTargets() {
return noInstructions;
}
public abstract void visit(Visitor visitor);
}