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

Example 81 with LabelNode

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

the class ClassTransformer method patchInventoryPlayer.

private byte[] patchInventoryPlayer(byte[] basicClass) {
    ClassNode classNode = new ClassNode();
    ClassReader classReader = new ClassReader(basicClass);
    classReader.accept(classNode, 0);
    logger.log(Level.DEBUG, "Found InventoryPlayer Class: " + classNode.name);
    MethodNode dropAllItems = null;
    for (MethodNode mn : classNode.methods) {
        if (mn.name.equals(MCPNames.method("func_70436_m"))) {
            dropAllItems = mn;
            break;
        }
    }
    if (dropAllItems != null) {
        logger.log(Level.DEBUG, " - Found dropAllItems (1/2)");
        for (int i = 0; i < dropAllItems.instructions.size(); i++) {
            AbstractInsnNode ain = dropAllItems.instructions.get(i);
            if (ain instanceof JumpInsnNode) {
                JumpInsnNode jin = (JumpInsnNode) ain;
                if (jin.getOpcode() == Opcodes.IFNE) {
                    AbstractInsnNode before = dropAllItems.instructions.get(i - 1);
                    if (before instanceof MethodInsnNode && ((MethodInsnNode) before).name.equals(MCPNames.method("func_190926_b"))) {
                        LabelNode l0 = jin.label;
                        InsnList toInsert = new InsnList();
                        toInsert.add(new VarInsnNode(ALOAD, 0));
                        toInsert.add(new VarInsnNode(ILOAD, 3));
                        toInsert.add(new VarInsnNode(ALOAD, 4));
                        toInsert.add(new MethodInsnNode(Opcodes.INVOKESTATIC, asmHandler, "shouldPlayerDrop", "(Lnet/minecraft/entity/player/InventoryPlayer;ILnet/minecraft/item/ItemStack;)Z", false));
                        toInsert.add(new JumpInsnNode(IFEQ, l0));
                        dropAllItems.instructions.insert(jin, toInsert);
                        i += 5;
                        logger.log(Level.DEBUG, " - Patched dropAllItems (2/2)");
                    }
                }
            }
        }
    }
    CustomClassWriter writer = new CustomClassWriter(ClassWriter.COMPUTE_MAXS | ClassWriter.COMPUTE_FRAMES);
    classNode.accept(writer);
    return writer.toByteArray();
}

Example 82 with LabelNode

use of org.objectweb.asm.tree.LabelNode in project CodeChickenLib by Chicken-Bones.

the class ASMBlock method mergeLabels.

/**
 * Pulls all common labels from other into this
 * @return this
 */
public ASMBlock mergeLabels(ASMBlock other) {
    if (labels.isEmpty() || other.labels.isEmpty())
        return this;
    // common labels, give them our nodes
    HashMap<LabelNode, LabelNode> labelMap = list.identityLabelMap();
    for (Entry<String, LabelNode> entry : other.labels.entrySet()) {
        LabelNode old = labels.get(entry.getKey());
        if (old != null)
            labelMap.put(old, entry.getValue());
    }
    HashSet<LabelNode> usedLabels = new HashSet<LabelNode>();
    for (AbstractInsnNode insn = other.list.list.getFirst(); insn != null; insn = insn.getNext()) if (insn.getType() == LABEL)
        usedLabels.add((LabelNode) insn);
    replaceLabels(labelMap, usedLabels);
    return this;
}

Example 83 with LabelNode

use of org.objectweb.asm.tree.LabelNode in project spring-loaded by spring-projects.

the class TypeDiffComputer method sameLookupSwitchInsn.

@SuppressWarnings("unchecked")
private static boolean sameLookupSwitchInsn(AbstractInsnNode o, AbstractInsnNode n) {
    if (!(n instanceof LookupSwitchInsnNode)) {
        return false;
    }
    LookupSwitchInsnNode lsio = (LookupSwitchInsnNode) o;
    LookupSwitchInsnNode lsin = (LookupSwitchInsnNode) n;
    if (sameLabels(lsio.dflt, lsin.dflt)) {
        return false;
    }
    List<Integer> keyso = lsio.keys;
    List<Integer> keysn = lsin.keys;
    if (keyso.size() != keysn.size()) {
        return false;
    }
    for (int i = 0, max = keyso.size(); i < max; i++) {
        if (keyso.get(i) != keysn.get(i)) {
            return false;
        }
    }
    List<LabelNode> labelso = lsio.labels;
    List<LabelNode> labelsn = lsin.labels;
    if (labelso.size() != labelsn.size()) {
        return false;
    }
    for (int i = 0, max = labelso.size(); i < max; i++) {
        if (!sameLabelNode(labelso.get(i), labelsn.get(i))) {
            return false;
        }
    }
    return true;
}

Example 84 with LabelNode

use of org.objectweb.asm.tree.LabelNode in project pinpoint by naver.

the class ASMMethodVariables method initLocalVariables.

// new method only.
public void initLocalVariables(final InsnList instructions) {
    // find enter & exit instruction.
    final LabelNode variableStartLabelNode = new LabelNode();
    final LabelNode variableEndLabelNode = new LabelNode();
    if (instructions.getFirst() != null) {
        instructions.insertBefore(instructions.getFirst(), variableStartLabelNode);
    } else {
        instructions.insert(variableStartLabelNode);
    }
    instructions.insert(instructions.getLast(), variableEndLabelNode);
    if (!isStatic()) {
        addLocalVariable("this", Type.getObjectType(this.declaringClassInternalName).getDescriptor(), variableStartLabelNode, variableEndLabelNode);
    }
    for (Type type : this.argumentTypes) {
        addLocalVariable(JavaAssistUtils.javaClassNameToVariableName(type.getClassName()), type.getDescriptor(), variableStartLabelNode, variableEndLabelNode);
    }
}

Example 85 with LabelNode

use of org.objectweb.asm.tree.LabelNode in project maple-ir by LLVM-but-worse.

the class LookupSwitchInsnNodeSerializer method deserialize.

@Override
public LookupSwitchInsnNode deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException {
    JsonObject jsonObject = (JsonObject) json;
    LabelNode dflt = context.deserialize(jsonObject.get("dflt"), LabelNode.class);
    List<Integer> keysList = context.deserialize(jsonObject.get("keys"), List.class);
    List<LabelNode> labelsList = context.deserialize(jsonObject.get("labels"), List.class);
    int[] keys = new int[keysList.size()];
    for (int i = 0; i < keys.length; i++) {
        keys[i] = keysList.get(i);
    }
    LabelNode[] labels = new LabelNode[labelsList.size()];
    for (int i = 0; i < labels.length; i++) {
        labels[i] = labelsList.get(i);
    }
    return new LookupSwitchInsnNode(dflt, keys, labels);
}