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

Example 31 with LocalVariableNode

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

the class ReplaceVariable method getReplacements.

/**
 * Retrieve the set of variables that have the same type and are in scope
 *
 * @param node
 * @return
 */
private Map<String, InsnList> getReplacements(MethodNode mn, String className, AbstractInsnNode node, Frame frame) {
    Map<String, InsnList> variables = new HashMap<String, InsnList>();
    if (node instanceof VarInsnNode) {
        VarInsnNode var = (VarInsnNode) node;
        try {
            LocalVariableNode origVar = getLocal(mn, node, var.var);
            // LocalVariableNode origVar = (LocalVariableNode) mn.localVariables.get(var.var);
            logger.debug("Looking for replacements for " + origVar.name + " of type " + origVar.desc + " at index " + origVar.index);
            // FIXXME: ASM gets scopes wrong, so we only use primitive vars?
            // if (!origVar.desc.startsWith("L"))
            variables.putAll(getLocalReplacements(mn, origVar.desc, node, frame));
            variables.putAll(getFieldReplacements(mn, className, origVar.desc, node));
        } catch (VariableNotFoundException e) {
            logger.info("Could not find variable, not replacing it: " + var.var);
            Iterator<?> it = mn.localVariables.iterator();
            while (it.hasNext()) {
                LocalVariableNode n = (LocalVariableNode) it.next();
                logger.info(n.index + ": " + n.name);
            }
            logger.info(e.toString());
            e.printStackTrace();
        }
    } else if (node instanceof FieldInsnNode) {
        FieldInsnNode field = (FieldInsnNode) node;
        if (field.owner.replace('/', '.').equals(className)) {
            logger.info("Looking for replacements for static field " + field.name + " of type " + field.desc);
            variables.putAll(getLocalReplacements(mn, field.desc, node, frame));
            variables.putAll(getFieldReplacements(mn, className, field.desc, node));
        }
    } else if (node instanceof IincInsnNode) {
        IincInsnNode incNode = (IincInsnNode) node;
        try {
            LocalVariableNode origVar = getLocal(mn, node, incNode.var);
            variables.putAll(getLocalReplacementsInc(mn, origVar.desc, incNode, frame));
        } catch (VariableNotFoundException e) {
            logger.info("Could not find variable, not replacing it: " + incNode.var);
        }
    } else {
    // throw new RuntimeException("Unknown type: " + node);
    }
    return variables;
}

Example 32 with LocalVariableNode

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

the class ReplaceArithmeticOperator method getNextIndex.

/**
 * <p>getNextIndex</p>
 *
 * @param mn a {@link org.objectweb.asm.tree.MethodNode} object.
 * @return a int.
 */
@SuppressWarnings("rawtypes")
public static 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();
        }
    }
    if (next == 0)
        next = getNextIndexFromLoad(mn);
    return next;
}

Example 33 with LocalVariableNode

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

the class InsertUnaryOperator method getLocal.

private LocalVariableNode getLocal(MethodNode mn, AbstractInsnNode node, int index) throws VariableNotFoundException {
    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);
        if (currentId >= startId && currentId <= endId && localVar.index == index)
            return localVar;
    }
    throw new VariableNotFoundException("Could not find local variable " + index + " at position " + currentId + ", have variables: " + mn.localVariables.size());
}

Example 34 with LocalVariableNode

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

the class InsertUnaryOperator 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 35 with LocalVariableNode

use of org.objectweb.asm.tree.LocalVariableNode in project DynamicSurroundings by OreCruncher.

the class SoundCrashFixStreamThread method transmorgrify.

@Override
public boolean transmorgrify(final ClassNode cn) {
    final String name = "run";
    final String sig = "()V";
    final MethodNode m = findMethod(cn, sig, name);
    if (m != null) {
        logMethod(Transformer.log(), m, "Found!");
        for (final Iterator<?> iterator = m.instructions.iterator(); iterator.hasNext(); ) {
            AbstractInsnNode insn = (AbstractInsnNode) iterator.next();
            if (insn instanceof MethodInsnNode && ((MethodInsnNode) insn).owner.equals("java/util/ListIterator") && ((MethodInsnNode) insn).name.equals("next")) {
                insn = insn.getNext().getNext();
                final LocalVariableNode var = findLocalVariable(m, "src");
                if (var != null) {
                    m.instructions.insert(insn, new VarInsnNode(Opcodes.ASTORE, var.index));
                    m.instructions.insert(insn, new MethodInsnNode(Opcodes.INVOKESTATIC, "org/blockartistry/DynSurround/client/sound/fix/SoundFixMethods", "removeSource", "(Lpaulscode/sound/Source;)Lpaulscode/sound/Source;", false));
                    m.instructions.insert(insn, new VarInsnNode(Opcodes.ALOAD, var.index));
                    return true;
                }
            }
        }
    } else {
        Transformer.log().error("Unable to locate method {}{}", name, sig);
    }
    Transformer.log().info("Unable to patch [{}]!", getClassName());
    return false;
}