/**
* 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.Expression;
import org.jreversepro.ast.intermediate.CompleteLine;
import org.jreversepro.reflect.instruction.Instruction;
/**
* @(#) PopEvaluator.java
*
* JReversePro - Java Decompiler / Disassembler.
* Copyright (C) 2008 Karthik Kumar.
* EMail: akkumar@users.sourceforge.net
*
* 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.
**/
/**
* @author akkumar
*
*/
public class PopEvaluator extends AbstractInstructionEvaluator {
/**
* @param context
*/
public PopEvaluator(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) {
if (ins.opcode == OPCODE_POP) {
Expression op1 = evalMachine.pop();
statements.append(new CompleteLine(ins, op1));
} else if (ins.opcode == OPCODE_POP2) {
// To Assess its use properly.
Expression op1 = evalMachine.pop();
if (op1.isCategory1()) {
evalMachine.pop();
}
} else {
throw new UnsupportedOperationException("Unsupported opcode");
}
}
/*
* (non-Javadoc)
*
* @seenet.sf.jrevpro.decompile.evaluator.AbstractInstructionEvaluator#
* getProcessingOpcodes()
*/
@Override
Iterable<Integer> getProcessingOpcodes() {
return Arrays.asList(OPCODE_POP, OPCODE_POP2);
}
}