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org.pitest.mutationtest.engine.gregor.mutators.rv.UOI4Mutator Maven / Gradle / Ivy
package org.pitest.mutationtest.engine.gregor.mutators.rv;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Opcodes;
import org.pitest.bytecode.ASMVersion;
import org.pitest.mutationtest.engine.MutationIdentifier;
import org.pitest.mutationtest.engine.gregor.MethodInfo;
import org.pitest.mutationtest.engine.gregor.MethodMutatorFactory;
import org.pitest.mutationtest.engine.gregor.MutationContext;
/**
* Mutation operator changing (a) to (--a)
*/
public enum UOI4Mutator implements MethodMutatorFactory {
UOI_4_MUTATOR;
public MethodVisitor create(final MutationContext context, final MethodInfo methodInfo,
final MethodVisitor methodVisitor) {
return new UOI4MethodVisitor(this, context, methodVisitor);
}
public String getGloballyUniqueId() {
return this.getClass().getName();
}
public String getName() {
return name();
}
}
class UOI4MethodVisitor extends MethodVisitor {
private final MethodMutatorFactory factory;
private final MutationContext context;
UOI4MethodVisitor(final MethodMutatorFactory factory, final MutationContext context,
final MethodVisitor delegateMethodVisitor) {
super(ASMVersion.ASM_VERSION, delegateMethodVisitor);
this.factory = factory;
this.context = context;
}
private boolean shouldMutate(String description) {
if (context.getClassInfo().isEnum()) {
return false;
} else {
final MutationIdentifier newId = this.context.registerMutation(this.factory, description);
return this.context.shouldMutate(newId);
}
}
@Override
public void visitVarInsn(int opcode, int var) {
switch (opcode) {
case Opcodes.ILOAD:
if (this.shouldMutate("Decremented (--a) integer local variable number " + var)) {
mv.visitIincInsn(var, -1);
}
mv.visitVarInsn(opcode, var);
break;
case Opcodes.FLOAD:
if (this.shouldMutate("Decremented (--a) float local variable number " + var)) {
mv.visitVarInsn(opcode, var);
mv.visitInsn(Opcodes.FCONST_1);
mv.visitInsn(Opcodes.FSUB);
mv.visitVarInsn(Opcodes.FSTORE, var);
}
mv.visitVarInsn(opcode, var);
break;
case Opcodes.LLOAD:
if (this.shouldMutate("Decremented (--a) long local variable number " + var)) {
mv.visitVarInsn(opcode, var);
mv.visitInsn(Opcodes.LCONST_1);
mv.visitInsn(Opcodes.LSUB);
mv.visitVarInsn(Opcodes.LSTORE, var);
}
mv.visitVarInsn(opcode, var);
break;
case Opcodes.DLOAD:
if (this.shouldMutate("Decremented (--a) double local variable number " + var)) {
mv.visitVarInsn(opcode, var);
mv.visitInsn(Opcodes.DCONST_1);
mv.visitInsn(Opcodes.DSUB);
mv.visitVarInsn(Opcodes.DSTORE, var);
}
mv.visitVarInsn(opcode, var);
break;
default:
mv.visitVarInsn(opcode, var);
break;
}
}
// ARRAYS
@Override
public void visitInsn(final int opcode) {
// I F L D + BS
switch (opcode) {
case Opcodes.IALOAD:
if (this.shouldMutate("Decremented (--a) integer array field")) {
mv.visitInsn(Opcodes.DUP2);
mv.visitInsn(opcode);
mv.visitInsn(Opcodes.ICONST_1);
mv.visitInsn(Opcodes.ISUB);
mv.visitInsn(Opcodes.DUP_X2);
mv.visitInsn(Opcodes.IASTORE);
} else {
mv.visitInsn(opcode);
}
break;
case Opcodes.FALOAD:
if (this.shouldMutate("Decremented (--a) float array field")) {
mv.visitInsn(Opcodes.DUP2);
mv.visitInsn(opcode);
mv.visitInsn(Opcodes.FCONST_1);
mv.visitInsn(Opcodes.FSUB);
mv.visitInsn(Opcodes.DUP_X2);
mv.visitInsn(Opcodes.FASTORE);
} else {
mv.visitInsn(opcode);
}
break;
case Opcodes.LALOAD:
if (this.shouldMutate("Decremented (--a) long array field")) {
mv.visitInsn(Opcodes.DUP2);
mv.visitInsn(opcode);
mv.visitInsn(Opcodes.LCONST_1);
mv.visitInsn(Opcodes.LSUB);
mv.visitInsn(Opcodes.DUP2_X2);
mv.visitInsn(Opcodes.LASTORE);
} else {
mv.visitInsn(opcode);
}
break;
case Opcodes.DALOAD:
if (this.shouldMutate("Decremented (--a) double array field")) {
mv.visitInsn(Opcodes.DUP2);
mv.visitInsn(opcode);
mv.visitInsn(Opcodes.DCONST_1);
mv.visitInsn(Opcodes.DSUB);
mv.visitInsn(Opcodes.DUP2_X2);
mv.visitInsn(Opcodes.DASTORE);
} else {
mv.visitInsn(opcode);
}
break;
case Opcodes.BALOAD:
if (this.shouldMutate("Decremented (--a) byte array field")) {
mv.visitInsn(Opcodes.DUP2);
mv.visitInsn(opcode);
mv.visitInsn(Opcodes.ICONST_1);
mv.visitInsn(Opcodes.ISUB);
mv.visitInsn(Opcodes.I2B);
mv.visitInsn(Opcodes.DUP_X2);
mv.visitInsn(Opcodes.BASTORE);
} else {
mv.visitInsn(opcode);
}
break;
case Opcodes.SALOAD:
if (this.shouldMutate("Decremented (--a) short array field")) {
mv.visitInsn(Opcodes.DUP2);
mv.visitInsn(opcode);
mv.visitInsn(Opcodes.ICONST_1);
mv.visitInsn(Opcodes.ISUB);
mv.visitInsn(Opcodes.I2S);
mv.visitInsn(Opcodes.DUP_X2);
mv.visitInsn(Opcodes.SASTORE);
} else {
mv.visitInsn(opcode);
}
break;
default:
mv.visitInsn(opcode);
break;
}
}
// PARAMETERS, static or not.
@Override
public void visitFieldInsn(int opcode, String owner, String name, String desc) {
// GETFIELD I,F,L,D + B,S
if ((opcode == Opcodes.GETFIELD)) {
if (desc.equals("I")) {
if (this.shouldMutate("Decremented (--a) integer field" + name)) {
mv.visitInsn(Opcodes.DUP);
mv.visitFieldInsn(opcode, owner, name, desc);
mv.visitInsn(Opcodes.ICONST_1);
mv.visitInsn(Opcodes.ISUB);
mv.visitInsn(Opcodes.DUP_X1);
mv.visitFieldInsn(Opcodes.PUTFIELD, owner, name, desc);
return;
}
}
if (desc.equals("F")) {
if (this.shouldMutate("Decremented (--a) float field" + name)) {
mv.visitInsn(Opcodes.DUP);
mv.visitFieldInsn(opcode, owner, name, desc);
mv.visitInsn(Opcodes.FCONST_1);
mv.visitInsn(Opcodes.FSUB);
mv.visitInsn(Opcodes.DUP_X1);
mv.visitFieldInsn(Opcodes.PUTFIELD, owner, name, desc);
return;
}
}
if (desc.equals("J")) {
if (this.shouldMutate("Decremented (--a) long field" + name)) {
mv.visitInsn(Opcodes.DUP);
mv.visitFieldInsn(opcode, owner, name, desc);
mv.visitInsn(Opcodes.LCONST_1);
mv.visitInsn(Opcodes.LSUB);
mv.visitInsn(Opcodes.DUP2_X1);
mv.visitFieldInsn(Opcodes.PUTFIELD, owner, name, desc);
return;
}
}
if (desc.equals("D")) {
if (this.shouldMutate("Decremented (--a) double field" + name)) {
mv.visitInsn(Opcodes.DUP);
mv.visitFieldInsn(opcode, owner, name, desc);
mv.visitInsn(Opcodes.DCONST_1);
mv.visitInsn(Opcodes.DSUB);
mv.visitInsn(Opcodes.DUP2_X1);
mv.visitFieldInsn(Opcodes.PUTFIELD, owner, name, desc);
return;
}
}
if (desc.equals("B")) {
if (this.shouldMutate("Decremented (--a) double field" + name)) {
mv.visitInsn(Opcodes.DUP);
mv.visitFieldInsn(opcode, owner, name, desc);
mv.visitInsn(Opcodes.ICONST_1);
mv.visitInsn(Opcodes.ISUB);
mv.visitInsn(Opcodes.I2B);
mv.visitInsn(Opcodes.DUP_X1);
mv.visitFieldInsn(Opcodes.PUTFIELD, owner, name, desc);
return;
}
}
if (desc.equals("S")) {
if (this.shouldMutate("Decremented (--a) short field" + name)) {
mv.visitInsn(Opcodes.DUP);
mv.visitFieldInsn(opcode, owner, name, desc);
mv.visitInsn(Opcodes.ICONST_1);
mv.visitInsn(Opcodes.ISUB);
mv.visitInsn(Opcodes.I2S);
mv.visitInsn(Opcodes.DUP_X1);
mv.visitFieldInsn(Opcodes.PUTFIELD, owner, name, desc);
return;
}
}
}
// GETSTATIC I,F,L,D + B,S
if (opcode == Opcodes.GETSTATIC) {
if (desc.equals("I")) {
if (this.shouldMutate("Decremented (--a) static integer field" + name)) {
mv.visitFieldInsn(opcode, owner, name, desc);
mv.visitInsn(Opcodes.ICONST_1);
mv.visitInsn(Opcodes.ISUB);
mv.visitInsn(Opcodes.DUP);
mv.visitFieldInsn(Opcodes.PUTSTATIC, owner, name, desc);
return;
}
}
if (desc.equals("F")) {
if (this.shouldMutate("Decremented (--a) static float field" + name)) {
mv.visitFieldInsn(opcode, owner, name, desc);
mv.visitInsn(Opcodes.FCONST_1);
mv.visitInsn(Opcodes.FSUB);
mv.visitInsn(Opcodes.DUP);
mv.visitFieldInsn(Opcodes.PUTSTATIC, owner, name, desc);
return;
}
}
if (desc.equals("J")) {
if (this.shouldMutate("Decremented (--a) static long field" + name)) {
mv.visitFieldInsn(opcode, owner, name, desc);
mv.visitInsn(Opcodes.LCONST_1);
mv.visitInsn(Opcodes.LSUB);
mv.visitInsn(Opcodes.DUP2);
mv.visitFieldInsn(Opcodes.PUTSTATIC, owner, name, desc);
return;
}
}
if (desc.equals("D")) {
if (this.shouldMutate("Decremented (--a) static double field" + name)) {
mv.visitFieldInsn(opcode, owner, name, desc);
mv.visitInsn(Opcodes.DCONST_1);
mv.visitInsn(Opcodes.DSUB);
mv.visitInsn(Opcodes.DUP2);
mv.visitFieldInsn(Opcodes.PUTSTATIC, owner, name, desc);
return;
}
}
if (desc.equals("B")) {
if (this.shouldMutate("Decremented (--a) static byte field" + name)) {
mv.visitFieldInsn(opcode, owner, name, desc);
mv.visitInsn(Opcodes.ICONST_1);
mv.visitInsn(Opcodes.ISUB);
mv.visitInsn(Opcodes.I2B);
mv.visitInsn(Opcodes.DUP);
mv.visitFieldInsn(Opcodes.PUTSTATIC, owner, name, desc);
return;
}
}
if (desc.equals("S")) {
if (this.shouldMutate("Decremented (--a) static short field" + name)) {
mv.visitFieldInsn(opcode, owner, name, desc);
mv.visitInsn(Opcodes.ICONST_1);
mv.visitInsn(Opcodes.ISUB);
mv.visitInsn(Opcodes.I2S);
mv.visitInsn(Opcodes.DUP);
mv.visitFieldInsn(Opcodes.PUTSTATIC, owner, name, desc);
return;
}
}
}
mv.visitFieldInsn(opcode, owner, name, desc);
}
}
