Examples with LabelNode org.objectweb.asm.tree.LabelNode used on opensource projects

Example 6 with LabelNode

use of org.objectweb.asm.tree.LabelNode in project evosuite by EvoSuite.

the class BooleanTestabilityTransformation method insertGetBefore.

/**
 * Insert a call that takes a boolean from the stack, and returns the
 * appropriate distance
 *
 * @param position
 * @param list
 */
public void insertGetBefore(AbstractInsnNode position, InsnList list) {
    logger.info("Inserting get call before");
    // Here, branchId is the first control dependency
    // list.insertBefore(position,
    // new LdcInsnNode(getControlDependentBranchID(currentMethodNode,
    // position)));
    // insertControlDependencyPlaceholder(currentMethodNode, position);
    // branch
    // approx
    // value
    Label label = new Label();
    LabelNode labelNode = new LabelNode(label);
    // BooleanTestabilityPlaceholderTransformer.addControlDependencyPlaceholder(label,
    // insnNode);
    currentMethodNode.instructions.insertBefore(position, labelNode);
    // instructions.insertBefore(insnNode, new LdcInsnNode(0));
    // mn.instructions.insertBefore(insnNode, new LdcInsnNode(0));
    currentMethodNode.instructions.insertBefore(position, new LdcInsnNode(getControlDependentBranchID(currentMethodNode, position)));
    currentMethodNode.instructions.insertBefore(position, new InsnNode(Opcodes.SWAP));
    currentMethodNode.instructions.insertBefore(position, new LdcInsnNode(getApproximationLevel(currentMethodNode, position)));
    currentMethodNode.instructions.insertBefore(position, new InsnNode(Opcodes.SWAP));
    MethodInsnNode get = new MethodInsnNode(Opcodes.INVOKESTATIC, Type.getInternalName(BooleanHelper.class), "getDistance", Type.getMethodDescriptor(Type.INT_TYPE, new Type[] { Type.INT_TYPE, Type.INT_TYPE, Type.INT_TYPE }), false);
    list.insertBefore(position, get);
}

Example 7 with LabelNode

use of org.objectweb.asm.tree.LabelNode in project evosuite by EvoSuite.

the class BooleanTestabilityTransformation method insertBranchIdPlaceholder.

private void insertBranchIdPlaceholder(MethodNode mn, JumpInsnNode jumpNode, int branchId) {
    Label label = new Label();
    LabelNode labelNode = new LabelNode(label);
    // BooleanTestabilityPlaceholderTransformer.addBranchPlaceholder(label, jumpNode);
    mn.instructions.insertBefore(jumpNode, labelNode);
    // mn.instructions.insertBefore(jumpNode, new LdcInsnNode(0));
    mn.instructions.insertBefore(jumpNode, new LdcInsnNode(branchId));
}

Example 8 with LabelNode

use of org.objectweb.asm.tree.LabelNode in project evosuite by EvoSuite.

the class BranchInstrumentation method addInstrumentationForDefaultTableswitchCase.

/**
 * <p>
 * addInstrumentationForDefaultTableswitchCase
 * </p>
 *
 * @param v
 *            a {@link org.evosuite.graphs.cfg.BytecodeInstruction} object.
 * @param instrumentation
 *            a {@link org.objectweb.asm.tree.InsnList} object.
 */
protected void addInstrumentationForDefaultTableswitchCase(BytecodeInstruction v, InsnList instrumentation) {
    if (!v.isTableSwitch())
        throw new IllegalArgumentException("tableswitch instruction expected");
    // setup instructions
    TableSwitchInsnNode toInstrument = (TableSwitchInsnNode) v.getASMNode();
    LabelNode caseLabel = new LabelNode();
    LabelNode defaultLabel = new LabelNode();
    LabelNode endLabel = new LabelNode();
    int keySize = (toInstrument.max - toInstrument.min) + 1;
    LabelNode[] caseLabels = new LabelNode[keySize];
    for (int i = 0; i < keySize; i++) caseLabels[i] = caseLabel;
    TableSwitchInsnNode mySwitch = new TableSwitchInsnNode(toInstrument.min, toInstrument.max, defaultLabel, caseLabels);
    // add instrumentation
    addDefaultCaseInstrumentation(v, instrumentation, mySwitch, defaultLabel, caseLabel, endLabel);
}

Example 9 with LabelNode

use of org.objectweb.asm.tree.LabelNode in project evosuite by EvoSuite.

the class BranchInstrumentation method analyze.

/*
	 * (non-Javadoc)
	 *
	 * @see
	 * org.evosuite.cfg.MethodInstrumentation#analyze(org.objectweb
	 * .asm.tree.MethodNode, org.jgrapht.Graph, java.lang.String,
	 * java.lang.String, int)
	 */
/**
 * {@inheritDoc}
 */
@SuppressWarnings("unchecked")
@Override
public void analyze(ClassLoader classLoader, MethodNode mn, String className, String methodName, int access) {
    this.classLoader = classLoader;
    RawControlFlowGraph graph = GraphPool.getInstance(classLoader).getRawCFG(className, methodName);
    Iterator<AbstractInsnNode> j = mn.instructions.iterator();
    while (j.hasNext()) {
        AbstractInsnNode in = j.next();
        for (BytecodeInstruction v : graph.vertexSet()) {
            // If this is in the CFG and it's a branch...
            if (in.equals(v.getASMNode())) {
                if (v.isBranch()) {
                    if (in.getPrevious() instanceof LabelNode) {
                        LabelNode label = (LabelNode) in.getPrevious();
                        if (label.getLabel() instanceof AnnotatedLabel) {
                            AnnotatedLabel aLabel = (AnnotatedLabel) label.getLabel();
                            if (aLabel.isStartTag()) {
                                if (!aLabel.shouldIgnore()) {
                                    logger.debug("Found artificial branch: " + v);
                                    Branch b = BranchPool.getInstance(classLoader).getBranchForInstruction(v);
                                    b.setInstrumented(true);
                                } else {
                                    continue;
                                }
                            }
                        }
                    }
                    mn.instructions.insertBefore(v.getASMNode(), getInstrumentation(v));
                } else if (v.isSwitch()) {
                    mn.instructions.insertBefore(v.getASMNode(), getSwitchInstrumentation(v, mn, className, methodName));
                }
            }
        }
    }
    mn.maxStack += 4;
}

Example 10 with LabelNode

use of org.objectweb.asm.tree.LabelNode in project evosuite by EvoSuite.

the class NegateCondition method apply.

/* (non-Javadoc)
	 * @see org.evosuite.cfg.instrumentation.MutationOperator#apply(org.objectweb.asm.tree.MethodNode, java.lang.String, java.lang.String, org.evosuite.cfg.BytecodeInstruction)
	 */
/**
 * {@inheritDoc}
 */
@Override
public List<Mutation> apply(MethodNode mn, String className, String methodName, BytecodeInstruction instruction, Frame frame) {
    List<Mutation> mutations = new LinkedList<Mutation>();
    JumpInsnNode node = (JumpInsnNode) instruction.getASMNode();
    LabelNode target = node.label;
    // insert mutation into bytecode with conditional
    JumpInsnNode mutation = new JumpInsnNode(getOpposite(node.getOpcode()), target);
    // insert mutation into pool
    Mutation mutationObject = MutationPool.addMutation(className, methodName, NAME, instruction, mutation, Mutation.getDefaultInfectionDistance());
    mutations.add(mutationObject);
    return mutations;
}