/** {@inheritDoc} */
@Override
public List<Mutation> apply(
MethodNode mn,
String className,
String methodName,
BytecodeInstruction instruction,
Frame frame) {
List<Mutation> mutations = new LinkedList<Mutation>();
FieldInsnNode node = (FieldInsnNode) instruction.getASMNode();
Type fieldType = Type.getType(node.desc);
// insert mutation into bytecode with conditional
InsnList mutation = new InsnList();
logger.debug("Mutation deletefield for statement " + node.name + node.desc);
if (node.getOpcode() == Opcodes.GETFIELD) {
logger.debug("Deleting source of type " + node.owner);
mutation.add(new InsnNode(Opcodes.POP));
}
mutation.add(getDefault(fieldType));
// insert mutation into pool
Mutation mutationObject =
MutationPool.addMutation(
className,
methodName,
NAME + " " + node.name + node.desc,
instruction,
mutation,
getInfectionDistance(node, mutation));
mutations.add(mutationObject);
return mutations;
}
/** {@inheritDoc} */
@Override
public List<Mutation> apply(
MethodNode mn,
String className,
String methodName,
BytecodeInstruction instruction,
Frame frame) {
List<Mutation> mutations = new LinkedList<Mutation>();
Object value = getValue(instruction.getASMNode());
for (Object replacement : getReplacement(value)) {
// insert mutation into bytecode with conditional
LdcInsnNode mutation = new LdcInsnNode(replacement);
// insert mutation into pool
String summary = NAME + " - " + value + " -> " + replacement;
if (replacement instanceof String) {
summary = summary.replace("*/", "*_/");
}
Mutation mutationObject =
MutationPool.addMutation(
className,
methodName,
summary,
instruction,
mutation,
Mutation.getDefaultInfectionDistance());
mutations.add(mutationObject);
}
return mutations;
}
/** {@inheritDoc} */
@Override
public List<Mutation> apply(
MethodNode mn,
String className,
String methodName,
BytecodeInstruction instruction,
Frame frame) {
JumpInsnNode node = (JumpInsnNode) instruction.getASMNode();
List<Mutation> mutations = new LinkedList<Mutation>();
LabelNode target = node.label;
boolean isBoolean =
frame.getStack(frame.getStackSize() - 1) == BooleanValueInterpreter.BOOLEAN_VALUE;
for (Integer op : getOperators(node.getOpcode(), isBoolean)) {
logger.debug("Adding replacement " + op);
if (op >= 0) {
// insert mutation into bytecode with conditional
JumpInsnNode mutation = new JumpInsnNode(op, target);
// insert mutation into pool
Mutation mutationObject =
MutationPool.addMutation(
className,
methodName,
"ReplaceComparisonOperator " + getOp(node.getOpcode()) + " -> " + getOp(op),
instruction,
mutation,
getInfectionDistance(node.getOpcode(), op));
mutations.add(mutationObject);
} else {
// Replace relational operator with TRUE/FALSE
InsnList mutation = new InsnList();
if (opcodesInt.contains(node.getOpcode())) mutation.add(new InsnNode(Opcodes.POP));
else mutation.add(new InsnNode(Opcodes.POP2));
if (op == TRUE) {
mutation.add(new LdcInsnNode(1));
} else {
mutation.add(new LdcInsnNode(0));
}
mutation.add(new JumpInsnNode(Opcodes.IFNE, target));
Mutation mutationObject =
MutationPool.addMutation(
className,
methodName,
"ReplaceComparisonOperator " + getOp(node.getOpcode()) + " -> " + op,
instruction,
mutation,
getInfectionDistance(node.getOpcode(), op));
mutations.add(mutationObject);
}
}
return mutations;
}
/** {@inheritDoc} */
@Override
public boolean isApplicable(BytecodeInstruction instruction) {
return instruction.getASMNode().getOpcode() == Opcodes.GETFIELD
|| instruction.getASMNode().getOpcode() == Opcodes.GETSTATIC;
}