/*
* Copyright 2010 Henry Coles
*
* 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.pitest.mutationtest.engine.gregor.mutators;
import java.util.HashMap;
import java.util.Map;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Opcodes;
import org.pitest.mutationtest.engine.gregor.AbstractInsnMutator;
import org.pitest.mutationtest.engine.gregor.InsnSubstitution;
import org.pitest.mutationtest.engine.gregor.MethodInfo;
import org.pitest.mutationtest.engine.gregor.MethodMutatorFactory;
import org.pitest.mutationtest.engine.gregor.MutationContext;
import org.pitest.mutationtest.engine.gregor.ZeroOperandMutation;
public enum MathMutator implements MethodMutatorFactory {
MATH_MUTATOR;
@Override
public MethodVisitor create(final MutationContext context,
final MethodInfo methodInfo, final MethodVisitor methodVisitor) {
return new MathMethodVisitor(this, methodInfo, context, methodVisitor);
}
@Override
public String getGloballyUniqueId() {
return this.getClass().getName();
}
@Override
public String getName() {
return name();
}
}
class MathMethodVisitor extends AbstractInsnMutator {
MathMethodVisitor(final MethodMutatorFactory factory,
final MethodInfo methodInfo, final MutationContext context,
final MethodVisitor writer) {
super(factory, methodInfo, context, writer);
}
private static final Map<Integer, ZeroOperandMutation> MUTATIONS = new HashMap<Integer, ZeroOperandMutation>();
static {
MUTATIONS.put(Opcodes.IADD, new InsnSubstitution(Opcodes.ISUB,
"Replaced integer addition with subtraction"));
MUTATIONS.put(Opcodes.ISUB, new InsnSubstitution(Opcodes.IADD,
"Replaced integer subtraction with addition"));
MUTATIONS.put(Opcodes.IMUL, new InsnSubstitution(Opcodes.IDIV,
"Replaced integer multiplication with division"));
MUTATIONS.put(Opcodes.IDIV, new InsnSubstitution(Opcodes.IMUL,
"Replaced integer division with multiplication"));
MUTATIONS.put(Opcodes.IOR, new InsnSubstitution(Opcodes.IAND,
"Replaced bitwise OR with AND"));
MUTATIONS.put(Opcodes.IAND, new InsnSubstitution(Opcodes.IOR,
"Replaced bitwise AND with OR"));
MUTATIONS.put(Opcodes.IREM, new InsnSubstitution(Opcodes.IMUL,
"Replaced integer modulus with multiplication"));
MUTATIONS.put(Opcodes.IXOR, new InsnSubstitution(Opcodes.IAND,
"Replaced XOR with AND"));
MUTATIONS.put(Opcodes.ISHL, new InsnSubstitution(Opcodes.ISHR,
"Replaced Shift Left with Shift Right"));
MUTATIONS.put(Opcodes.ISHR, new InsnSubstitution(Opcodes.ISHL,
"Replaced Shift Right with Shift Left"));
MUTATIONS.put(Opcodes.IUSHR, new InsnSubstitution(Opcodes.ISHL,
"Replaced Unsigned Shift Right with Shift Left"));
// longs
MUTATIONS.put(Opcodes.LADD, new InsnSubstitution(Opcodes.LSUB,
"Replaced long addition with subtraction"));
MUTATIONS.put(Opcodes.LSUB, new InsnSubstitution(Opcodes.LADD,
"Replaced long subtraction with addition"));
MUTATIONS.put(Opcodes.LMUL, new InsnSubstitution(Opcodes.LDIV,
"Replaced long multiplication with division"));
MUTATIONS.put(Opcodes.LDIV, new InsnSubstitution(Opcodes.LMUL,
"Replaced long division with multiplication"));
MUTATIONS.put(Opcodes.LOR, new InsnSubstitution(Opcodes.LAND,
"Replaced bitwise OR with AND"));
MUTATIONS.put(Opcodes.LAND, new InsnSubstitution(Opcodes.LOR,
"Replaced bitwise AND with OR"));
MUTATIONS.put(Opcodes.LREM, new InsnSubstitution(Opcodes.LMUL,
"Replaced long modulus with multiplication"));
MUTATIONS.put(Opcodes.LXOR, new InsnSubstitution(Opcodes.LAND,
"Replaced XOR with AND"));
MUTATIONS.put(Opcodes.LSHL, new InsnSubstitution(Opcodes.LSHR,
"Replaced Shift Left with Shift Right"));
MUTATIONS.put(Opcodes.LSHR, new InsnSubstitution(Opcodes.LSHL,
"Replaced Shift Right with Shift Left"));
MUTATIONS.put(Opcodes.LUSHR, new InsnSubstitution(Opcodes.LSHL,
"Replaced Unsigned Shift Right with Shift Left"));
// floats
MUTATIONS.put(Opcodes.FADD, new InsnSubstitution(Opcodes.FSUB,
"Replaced float addition with subtraction"));
MUTATIONS.put(Opcodes.FSUB, new InsnSubstitution(Opcodes.FADD,
"Replaced float subtraction with addition"));
MUTATIONS.put(Opcodes.FMUL, new InsnSubstitution(Opcodes.FDIV,
"Replaced float multiplication with division"));
MUTATIONS.put(Opcodes.FDIV, new InsnSubstitution(Opcodes.FMUL,
"Replaced float division with multiplication"));
MUTATIONS.put(Opcodes.FREM, new InsnSubstitution(Opcodes.FMUL,
"Replaced float modulus with multiplication"));
// doubles
MUTATIONS.put(Opcodes.DADD, new InsnSubstitution(Opcodes.DSUB,
"Replaced double addition with subtraction"));
MUTATIONS.put(Opcodes.DSUB, new InsnSubstitution(Opcodes.DADD,
"Replaced double subtraction with addition"));
MUTATIONS.put(Opcodes.DMUL, new InsnSubstitution(Opcodes.DDIV,
"Replaced double multiplication with division"));
MUTATIONS.put(Opcodes.DDIV, new InsnSubstitution(Opcodes.DMUL,
"Replaced double division with multiplication"));
MUTATIONS.put(Opcodes.DREM, new InsnSubstitution(Opcodes.DMUL,
"Replaced double modulus with multiplication"));
}
@Override
protected Map<Integer, ZeroOperandMutation> getMutations() {
return MUTATIONS;
}
}