/**
* JReversePro - Java Decompiler / Disassembler.
* Copyright (C) 2008 Karthik Kumar.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
**/
package org.jreversepro.ast.evaluator;
import java.util.Arrays;
import org.jreversepro.ast.expression.BinaryOpExpression;
import org.jreversepro.ast.expression.Constant;
import org.jreversepro.ast.expression.Variable;
import org.jreversepro.ast.expression.BinaryOpExpression.BinaryOperator;
import org.jreversepro.ast.intermediate.CompleteLine;
import org.jreversepro.reflect.instruction.Instruction;
/**
* @author akkumar
*
*/
public class IINCEvaluator extends AbstractInstructionEvaluator {
/**
* @param context
*/
public IINCEvaluator(EvaluatorContext context) {
super(context);
}
/*
* (non-Javadoc)
*
* @see
* net.sf.jrevpro.decompile.evaluator.AbstractInstructionEvaluator#evaluate
* (net.sf.jrevpro.reflect.instruction.Instruction)
*/
@Override
void evaluate(Instruction ins) {
Variable var = new Variable(varTable, JVM_TYPE_INT, ins
.getArgUnsignedWide(), ins.currentPc);
int constant = ins.getArgWide(1);
if (constant < 0) {
Constant ct = new Constant(-constant);
statements.append(new CompleteLine(ins, new BinaryOpExpression(var,
BinaryOperator.SMART_MINUS, ct, JVM_TYPE_INT)));
} else {
Constant ct = new Constant(constant);
statements.append(new CompleteLine(ins, new BinaryOpExpression(var,
BinaryOperator.SMART_PLUS, ct, JVM_TYPE_INT)));
}
}
/*
* (non-Javadoc)
*
* @seenet.sf.jrevpro.decompile.evaluator.AbstractInstructionEvaluator#
* getProcessingOpcodes()
*/
@Override
Iterable<Integer> getProcessingOpcodes() {
return Arrays.asList(OPCODE_IINC);
}
}