com.retroduction.carma.transformer.asm.ror.ROR_Transition.java Source code

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Here is the source code for com.retroduction.carma.transformer.asm.ror.ROR_Transition.java

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/**
  *  This file is part of Carma (Retroduction.org).
  *
  *  Carma 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 3 of the License, or
  *  (at your option) any later version.
  *
  *  Carma 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 Carma.  If not, see <http://www.gnu.org/licenses/>.
  *
  * Copyright Retroduction.org (c) 2007-2010
  */

package com.retroduction.carma.transformer.asm.ror;

import java.util.List;

import org.objectweb.asm.ClassWriter;
import org.objectweb.asm.tree.AbstractInsnNode;
import org.objectweb.asm.tree.ClassNode;
import org.objectweb.asm.tree.JumpInsnNode;
import org.objectweb.asm.tree.MethodNode;

import com.retroduction.carma.core.api.testrunners.om.Mutant;
import com.retroduction.carma.core.api.testrunners.om.SourceCodeMapping;
import com.retroduction.carma.transformer.CRTEntry;
import com.retroduction.carma.transformer.asm.AbstractASMTransition;

public abstract class ROR_Transition extends AbstractASMTransition {

    /*
     * 2 Integer byte code comparisons implemented:
     * 
     * EQ NE LT LE GT GE
     * 
     * EQ -- impl -- -- -- --
     * 
     * NE impl -- -- -- -- --
     * 
     * LT -- -- -- -- -- impl
     * 
     * LE -- -- -- -- impl --
     * 
     * GT -- -- -- impl -- --
     * 
     * GE -- -- impl -- -- --
     * 
     */

    /*
     * Integer/Const value byte code comparisons implemented:
     * 
     * EQ NE LT LE GT GE
     * 
     * EQ -- impl -- -- -- --
     * 
     * NE impl -- -- -- -- --
     * 
     * LT -- -- -- -- -- impl
     * 
     * LE -- -- -- -- impl --
     * 
     * GT -- -- -- impl -- --
     * 
     * GE -- -- impl -- -- --
     * 
     */

    /*
     * Reference byte code comparisons implemented:
     * 
     * EQ NE
     * 
     * EQ -- impl
     * 
     * NE impl --
     * 
     */

    protected int sourceInstruction;

    protected int targetInstruction;

    @Override
    protected void checkNode(ClassNode classNode, MethodNode methodNode, List<Mutant> result, CRTEntry jcovInfo,
            AbstractInsnNode node) {

        if (node instanceof JumpInsnNode) {

            JumpInsnNode jumpNode = (JumpInsnNode) node;

            if (jumpNode.getOpcode() == this.sourceInstruction) {

                jumpNode.setOpcode(this.targetInstruction);

                ClassWriter writer = new ClassWriter(0);
                classNode.accept(writer);

                SourceCodeMapping sourceMapping = new SourceCodeMapping();
                sourceMapping.setLineStart(jcovInfo.getStartLine());
                sourceMapping.setLineEnd(jcovInfo.getEndLine());
                sourceMapping.setColumnStart(jcovInfo.getStartColumn());
                sourceMapping.setColumnEnd(jcovInfo.getEndColumn());

                Mutant mutant = new Mutant();
                mutant.setByteCode(writer.toByteArray());
                mutant.setSourceMapping(sourceMapping);
                mutant.setSurvived(true);
                mutant.setTransition(this);

                result.add(mutant);
                jumpNode.setOpcode(this.sourceInstruction);

            }

        }
    }
}