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

Example 6 with LocalVariableNode

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

the class ImplicitElseTransformer method isDefinedBefore.

@SuppressWarnings("unchecked")
private boolean isDefinedBefore(MethodNode mn, VarInsnNode var, AbstractInsnNode position) {
    // TODO: Iterate over local variables and check if local is defined here
    List<LocalVariableNode> localVar = mn.localVariables;
    if (localVar.isEmpty()) {
        // If we have no debug information, try to guess
        AbstractInsnNode pos = position.getPrevious();
        while (pos != mn.instructions.getFirst()) {
            if (pos instanceof VarInsnNode) {
                VarInsnNode vn = (VarInsnNode) pos;
                if (var.var == vn.var) {
                    return true;
                }
            }
            pos = pos.getPrevious();
        }
    } else {
        int current = mn.instructions.indexOf(position);
        for (LocalVariableNode local : localVar) {
            if (local.index == var.var) {
                int start = mn.instructions.indexOf(local.start);
                int end = mn.instructions.indexOf(local.end);
                if (current >= start && current <= end)
                    return true;
            }
        }
    }
    return false;
}

Example 7 with LocalVariableNode

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

the class ReplaceVariable method getLocalReplacements.

private Map<String, InsnList> getLocalReplacements(MethodNode mn, String desc, AbstractInsnNode node, Frame frame) {
    Map<String, InsnList> replacements = new HashMap<String, InsnList>();
    // if (desc.equals("I"))
    // return replacements;
    int otherNum = -1;
    if (node instanceof VarInsnNode) {
        VarInsnNode vNode = (VarInsnNode) node;
        otherNum = vNode.var;
    }
    if (otherNum == -1)
        return replacements;
    int currentId = mn.instructions.indexOf(node);
    logger.info("Looking for replacements at position " + currentId + " of variable " + otherNum + " of type " + desc);
    for (Object v : mn.localVariables) {
        LocalVariableNode localVar = (LocalVariableNode) v;
        int startId = mn.instructions.indexOf(localVar.start);
        int endId = mn.instructions.indexOf(localVar.end);
        logger.info("Checking local variable " + localVar.name + " of type " + localVar.desc + " at index " + localVar.index);
        if (!localVar.desc.equals(desc))
            logger.info("- Types do not match");
        if (localVar.index == otherNum)
            logger.info("- Replacement = original");
        if (currentId < startId)
            logger.info("- Out of scope (start)");
        if (currentId > endId)
            logger.info("- Out of scope (end)");
        BasicValue newValue = (BasicValue) frame.getLocal(localVar.index);
        if (newValue == BasicValue.UNINITIALIZED_VALUE)
            logger.info("- Not initialized");
        if (localVar.desc.equals(desc) && localVar.index != otherNum && currentId >= startId && currentId <= endId && newValue != BasicValue.UNINITIALIZED_VALUE) {
            logger.info("Adding local variable " + localVar.name + " of type " + localVar.desc + " at index " + localVar.index + ",  " + startId + "-" + endId + ", " + currentId);
            InsnList list = new InsnList();
            if (node.getOpcode() == Opcodes.GETFIELD) {
                // Remove field owner from stack
                list.add(new InsnNode(Opcodes.POP));
            }
            list.add(new VarInsnNode(getLoadOpcode(localVar), localVar.index));
            replacements.put(localVar.name, list);
        }
    }
    return replacements;
}

Example 8 with LocalVariableNode

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

the class ReplaceVariable method getName.

private String getName(MethodNode mn, AbstractInsnNode node) throws VariableNotFoundException {
    if (node instanceof VarInsnNode) {
        LocalVariableNode var = getLocal(mn, node, ((VarInsnNode) node).var);
        return var.name;
    } else if (node instanceof FieldInsnNode) {
        return ((FieldInsnNode) node).name;
    } else if (node instanceof IincInsnNode) {
        IincInsnNode incNode = (IincInsnNode) node;
        LocalVariableNode var = getLocal(mn, node, incNode.var);
        return var.name;
    } else {
        throw new RuntimeException("Unknown variable node: " + node);
    }
}

Example 9 with LocalVariableNode

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

the class ReplaceVariable method getLocalReplacementsInc.

private Map<String, InsnList> getLocalReplacementsInc(MethodNode mn, String desc, IincInsnNode node, Frame frame) {
    Map<String, InsnList> replacements = new HashMap<String, InsnList>();
    int otherNum = -1;
    otherNum = node.var;
    int currentId = mn.instructions.indexOf(node);
    for (Object v : mn.localVariables) {
        LocalVariableNode localVar = (LocalVariableNode) v;
        int startId = mn.instructions.indexOf(localVar.start);
        int endId = mn.instructions.indexOf(localVar.end);
        logger.info("Checking local variable " + localVar.name + " of type " + localVar.desc + " at index " + localVar.index);
        if (!localVar.desc.equals(desc))
            logger.info("- Types do not match: " + localVar.name);
        if (localVar.index == otherNum)
            logger.info("- Replacement = original " + localVar.name);
        if (currentId < startId)
            logger.info("- Out of scope (start) " + localVar.name);
        if (currentId > endId)
            logger.info("- Out of scope (end) " + localVar.name);
        BasicValue newValue = (BasicValue) frame.getLocal(localVar.index);
        if (newValue == BasicValue.UNINITIALIZED_VALUE)
            logger.info("- Not initialized");
        if (localVar.desc.equals(desc) && localVar.index != otherNum && currentId >= startId && currentId <= endId && newValue != BasicValue.UNINITIALIZED_VALUE) {
            logger.info("Adding local variable " + localVar.name + " of type " + localVar.desc + " at index " + localVar.index);
            InsnList list = new InsnList();
            list.add(new IincInsnNode(localVar.index, node.incr));
            replacements.put(localVar.name, list);
        }
    }
    return replacements;
}

Example 10 with LocalVariableNode

use of org.objectweb.asm.tree.LocalVariableNode in project Random-Things by lumien231.

the class ClassTransformer method getNextIndex.

public int getNextIndex(MethodNode mn) {
    Iterator it = mn.localVariables.iterator();
    int max = 0;
    int next = 0;
    while (it.hasNext()) {
        LocalVariableNode var = (LocalVariableNode) it.next();
        int index = var.index;
        if (index >= max) {
            max = index;
            next = max + Type.getType(var.desc).getSize();
        }
    }
    return next;
}