Example usage for org.objectweb.asm.tree MethodNode visitMaxs

List of usage examples for org.objectweb.asm.tree MethodNode visitMaxs

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Introduction

In this page you can find the example usage for org.objectweb.asm.tree MethodNode visitMaxs.

Prototype

@Override
    public void visitMaxs(final int maxStack, final int maxLocals)

Source Link

Usage

From source file:com.seovic.pof.PortableTypeGenerator.java

License:Apache License

private void implementDefaultConstructor() {
    MethodNode ctor = findMethod("<init>", "()V");
    if (ctor == null) {
        ctor = new MethodNode(ACC_PUBLIC, "<init>", "()V", null, null);

        ctor.visitCode();/*from w ww.  j  a v  a  2 s  .c  o  m*/
        ctor.visitVarInsn(ALOAD, 0);
        ctor.visitMethodInsn(INVOKESPECIAL, cn.superName, "<init>", "()V");
        ctor.visitInsn(RETURN);
        ctor.visitMaxs(1, 1);
        ctor.visitEnd();

        cn.methods.add(ctor);
    } else if ((ctor.access & ACC_PUBLIC) == 0) {
        LOG.info("Class " + cn.name + " has a non-public default constructor. Making it public.");
        ctor.access = ACC_PUBLIC;
    }
}

From source file:com.seovic.pof.PortableTypeGenerator.java

License:Apache License

private void implementReadExternal() {
    int index = 0;

    MethodNode mn = new MethodNode(ACC_PRIVATE, "readExternal", "(Lcom/tangosol/io/pof/PofReader;)V", null,
            new String[] { "java/io/IOException" });
    mn.visitCode();/*from  w ww. j  av  a 2  s .  c o  m*/

    for (int version : properties.keySet()) {
        mn.visitVarInsn(ALOAD, 1);
        mn.visitMethodInsn(INVOKEINTERFACE, "com/tangosol/io/pof/PofReader", "getVersionId", "()I");
        mn.visitIntInsn(BIPUSH, version);
        Label l = new Label();
        mn.visitJumpInsn(IF_ICMPLT, l);

        SortedSet<FieldNode> fields = properties.get(version);
        for (FieldNode fn : fields) {
            Type type = Type.getType(fn.desc);

            if (isDebugEnabled()) {
                mn.visitLdcInsn("reading attribute " + index + " (" + fn.name + ") from POF stream");
                mn.visitIntInsn(BIPUSH, 7);
                mn.visitMethodInsn(INVOKESTATIC, "com/tangosol/net/CacheFactory", "log",
                        "(Ljava/lang/String;I)V");
            }
            mn.visitVarInsn(ALOAD, 0);
            mn.visitVarInsn(ALOAD, 1);
            mn.visitIntInsn(BIPUSH, index++);

            ReadMethod readMethod = getReadMethod(fn, type);
            readMethod.createTemplate(mn, fn, type);
            mn.visitMethodInsn(INVOKEINTERFACE, "com/tangosol/io/pof/PofReader", readMethod.getName(),
                    readMethod.getDescriptor());
            if (type.getSort() == Type.OBJECT || "readObjectArray".equals(readMethod.getName())) {
                mn.visitTypeInsn(CHECKCAST, type.getInternalName());
            }
            mn.visitFieldInsn(PUTFIELD, cn.name, fn.name, fn.desc);
        }

        mn.visitLabel(l);
        mn.visitFrame(F_SAME, 0, null, 0, null);
    }

    mn.visitInsn(RETURN);
    mn.visitMaxs(0, 0);
    mn.visitEnd();

    if (!hasMethod(mn)) {
        cn.methods.add(mn);
    }
    LOG.debug("Implemented method: " + mn.name);
}

From source file:com.seovic.pof.PortableTypeGenerator.java

License:Apache License

private void implementWriteExternal() {
    int index = 0;

    MethodNode mn = new MethodNode(ACC_PRIVATE, "writeExternal", "(Lcom/tangosol/io/pof/PofWriter;)V", null,
            new String[] { "java/io/IOException" });
    mn.visitCode();//from  ww w .  j  a  v  a2  s.com

    for (int version : properties.keySet()) {
        SortedSet<FieldNode> fields = properties.get(version);
        for (FieldNode fn : fields) {
            addPofIndex(fn, index);
            Type type = Type.getType(fn.desc);

            if (isDebugEnabled()) {
                mn.visitLdcInsn("writing attribute " + index + " (" + fn.name + ") to POF stream");
                mn.visitIntInsn(BIPUSH, 7);
                mn.visitMethodInsn(INVOKESTATIC, "com/tangosol/net/CacheFactory", "log",
                        "(Ljava/lang/String;I)V");
            }
            mn.visitVarInsn(ALOAD, 1);
            mn.visitIntInsn(BIPUSH, index++);
            mn.visitVarInsn(ALOAD, 0);
            mn.visitFieldInsn(GETFIELD, cn.name, fn.name, fn.desc);

            WriteMethod writeMethod = getWriteMethod(fn, type);
            writeMethod.pushUniformTypes(mn);
            mn.visitMethodInsn(INVOKEINTERFACE, "com/tangosol/io/pof/PofWriter", writeMethod.getName(),
                    writeMethod.getDescriptor());
        }
    }

    mn.visitInsn(RETURN);
    mn.visitMaxs(0, 0);
    mn.visitEnd();

    if (!hasMethod(mn)) {
        cn.methods.add(mn);
    }
    LOG.debug("Implemented method: " + mn.name);
}

From source file:de.sanandrew.core.manpack.transformer.TransformBadPotionsATN.java

License:Creative Commons License

private byte[] transformPotion(byte[] bytes) {
    ClassNode cn = ASMHelper.createClassNode(bytes);

    if (ASMHelper.hasClassMethodName(cn, ASMNames.M_isBadEffect)) {
        return bytes;
    }/*from ww w. jav a  2s.c  om*/

    MethodNode method = new MethodNode(Opcodes.ACC_PUBLIC, ASMNames.M_isBadEffect, "()Z", null, null);
    method.visitCode();
    Label l0 = new Label();
    method.visitLabel(l0);
    method.visitVarInsn(Opcodes.ALOAD, 0);
    method.visitFieldInsn(Opcodes.GETFIELD, "net/minecraft/potion/Potion", ASMNames.F_isBadEffect, "Z");
    method.visitInsn(Opcodes.IRETURN);
    Label l1 = new Label();
    method.visitLabel(l1);
    method.visitLocalVariable("this", "Lnet/minecraft/potion/Potion;", null, l0, l1, 0);
    method.visitMaxs(0, 0);
    method.visitEnd();

    cn.methods.add(method);

    bytes = ASMHelper.createBytes(cn, ClassWriter.COMPUTE_FRAMES | ClassWriter.COMPUTE_MAXS);

    return bytes;
}

From source file:de.sanandrew.core.manpack.transformer.TransformELBAttackingPlayer.java

License:Creative Commons License

private static byte[] transformAccessors(byte[] bytes) {
    ClassNode clazz = ASMHelper.createClassNode(bytes);

    int complete = 0;
    for (MethodNode method : clazz.methods) {
        switch (method.name) {
        case "getELAttackingPlayer": {
            method.instructions.clear();
            method.visitCode();/*  w  ww .ja  va2  s  . c  om*/
            Label l0 = new Label();
            method.visitLabel(l0);
            method.visitVarInsn(Opcodes.ALOAD, 0);
            method.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "net/minecraft/entity/EntityLivingBase",
                    "_SAP_getAttackingPlayer", "()Lnet/minecraft/entity/player/EntityPlayer;", false);
            method.visitInsn(Opcodes.ARETURN);
            Label l1 = new Label();
            method.visitLabel(l1);
            method.visitLocalVariable("entity", "Lnet/minecraft/entity/EntityLivingBase;", null, l0, l1, 0);
            method.visitMaxs(0, 0);
            method.visitEnd();
            complete++;
            continue;
        }
        case "setELAttackingPlayer": {
            method.instructions.clear();
            method.visitCode();
            Label l0 = new Label();
            method.visitLabel(l0);
            method.visitVarInsn(Opcodes.ALOAD, 1);
            method.visitVarInsn(Opcodes.ALOAD, 0);
            method.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "net/minecraft/entity/EntityLivingBase",
                    "_SAP_setAttackingPlayer", "(Lnet/minecraft/entity/player/EntityPlayer;)V", false);
            Label l1 = new Label();
            method.visitLabel(l1);
            method.visitInsn(Opcodes.RETURN);
            Label l2 = new Label();
            method.visitLabel(l2);
            method.visitLocalVariable("player", "Lnet/minecraft/entity/player/EntityPlayer;", null, l0, l2, 0);
            method.visitLocalVariable("entity", "Lnet/minecraft/entity/EntityLivingBase;", null, l0, l2, 1);
            method.visitMaxs(0, 0);
            method.visitEnd();
            complete++;
            continue;
        }
        case "getELRecentlyHit": {
            method.instructions.clear();
            method.visitCode();
            Label l0 = new Label();
            method.visitLabel(l0);
            method.visitVarInsn(Opcodes.ALOAD, 0);
            method.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "net/minecraft/entity/EntityLivingBase",
                    "_SAP_getRecentlyHit", "()I", false);
            method.visitInsn(Opcodes.IRETURN);
            Label l1 = new Label();
            method.visitLabel(l1);
            method.visitLocalVariable("entity", "Lnet/minecraft/entity/EntityLivingBase;", null, l0, l1, 0);
            method.visitMaxs(0, 0);
            method.visitEnd();
            complete++;
            continue;
        }
        case "setELRecentlyHit": {
            method.instructions.clear();
            method.visitCode();
            Label l0 = new Label();
            method.visitLabel(l0);
            method.visitVarInsn(Opcodes.ALOAD, 1);
            method.visitVarInsn(Opcodes.ILOAD, 0);
            method.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "net/minecraft/entity/EntityLivingBase",
                    "_SAP_setRecentlyHit", "(I)V", false);
            Label l1 = new Label();
            method.visitLabel(l1);
            method.visitInsn(Opcodes.RETURN);
            Label l2 = new Label();
            method.visitLabel(l2);
            method.visitLocalVariable("hit", "I", null, l0, l2, 0);
            method.visitLocalVariable("entity", "Lnet/minecraft/entity/EntityLivingBase;", null, l0, l2, 1);
            method.visitMaxs(0, 0);
            method.visitEnd();
            complete++;
            continue;
        }
        }

        if (complete >= 4) {
            break;
        }
    }

    bytes = ASMHelper.createBytes(clazz, ClassWriter.COMPUTE_FRAMES | ClassWriter.COMPUTE_MAXS);

    return bytes;
}

From source file:de.sanandrew.core.manpack.transformer.TransformELBAttackingPlayer.java

License:Creative Commons License

private static byte[] transformAttackingPlayer(byte[] bytes) {
    ClassNode clazz = ASMHelper.createClassNode(bytes);

    /** ADD GETTER FOR ATTACKING PLAYER **/
    {//from  w  w w.  j  a v a2 s  .  c o m
        MethodNode method = new MethodNode(Opcodes.ACC_PUBLIC, "_SAP_getAttackingPlayer",
                "()Lnet/minecraft/entity/player/EntityPlayer;", null, null);
        method.visitCode();
        Label l0 = new Label();
        method.visitLabel(l0);
        method.visitVarInsn(Opcodes.ALOAD, 0);
        method.visitFieldInsn(Opcodes.GETFIELD, "net/minecraft/entity/EntityLivingBase",
                ASMNames.F_attackingPlayer, "Lnet/minecraft/entity/player/EntityPlayer;");
        method.visitInsn(Opcodes.ARETURN);
        Label l1 = new Label();
        method.visitLabel(l1);
        method.visitLocalVariable("this", "Lnet/minecraft/entity/EntityLivingBase;", null, l0, l1, 0);
        method.visitMaxs(0, 0);
        method.visitEnd();
        clazz.methods.add(method);
    }

    /** ADD SETTER FOR ATTACKING PLAYER **/
    {
        MethodNode method = new MethodNode(Opcodes.ACC_PUBLIC, "_SAP_setAttackingPlayer",
                "(Lnet/minecraft/entity/player/EntityPlayer;)V", null, null);
        method.visitCode();
        Label l0 = new Label();
        method.visitLabel(l0);
        method.visitVarInsn(Opcodes.ALOAD, 0);
        method.visitVarInsn(Opcodes.ALOAD, 1);
        method.visitFieldInsn(Opcodes.PUTFIELD, "net/minecraft/entity/EntityLivingBase",
                ASMNames.F_attackingPlayer, "Lnet/minecraft/entity/player/EntityPlayer;");
        Label l1 = new Label();
        method.visitLabel(l1);
        method.visitInsn(Opcodes.RETURN);
        Label l2 = new Label();
        method.visitLabel(l2);
        method.visitLocalVariable("this", "Lnet/minecraft/entity/EntityLivingBase;", null, l0, l2, 0);
        method.visitLocalVariable("player", "Lnet/minecraft/entity/player/EntityPlayer;", null, l0, l2, 1);
        method.visitMaxs(0, 0);
        method.visitEnd();
        clazz.methods.add(method);
    }

    /** ADD GETTER FOR RECENTLY HIT **/
    {
        MethodNode method = new MethodNode(Opcodes.ACC_PUBLIC, "_SAP_getRecentlyHit", "()I", null, null);
        method.visitCode();
        Label l0 = new Label();
        method.visitLabel(l0);
        method.visitVarInsn(Opcodes.ALOAD, 0);
        method.visitFieldInsn(Opcodes.GETFIELD, "net/minecraft/entity/EntityLivingBase", ASMNames.F_recentlyHit,
                "I");
        method.visitInsn(Opcodes.IRETURN);
        Label l1 = new Label();
        method.visitLabel(l1);
        method.visitLocalVariable("this", "Lnet/minecraft/entity/EntityLivingBase;", null, l0, l1, 0);
        method.visitMaxs(0, 0);
        method.visitEnd();
        clazz.methods.add(method);
    }

    /** ADD SETTER FOR RECENTLY HIT **/
    {
        MethodNode method = new MethodNode(Opcodes.ACC_PUBLIC, "_SAP_setRecentlyHit", "(I)V", null, null);
        method.visitCode();
        Label l0 = new Label();
        method.visitLabel(l0);
        method.visitVarInsn(Opcodes.ALOAD, 0);
        method.visitVarInsn(Opcodes.ILOAD, 1);
        method.visitFieldInsn(Opcodes.PUTFIELD, "net/minecraft/entity/EntityLivingBase", ASMNames.F_recentlyHit,
                "I");
        Label l1 = new Label();
        method.visitLabel(l1);
        method.visitInsn(Opcodes.RETURN);
        Label l2 = new Label();
        method.visitLabel(l2);
        method.visitLocalVariable("this", "Lnet/minecraft/entity/EntityLivingBase;", null, l0, l2, 0);
        method.visitLocalVariable("hit", "I", null, l0, l2, 1);
        method.visitMaxs(0, 0);
        method.visitEnd();
        clazz.methods.add(method);
    }

    bytes = ASMHelper.createBytes(clazz, /*ClassWriter.COMPUTE_FRAMES |*/ ClassWriter.COMPUTE_MAXS);

    return bytes;
}

From source file:de.sanandrew.core.manpack.transformer.TransformEntityCollision.java

License:Creative Commons License

private static byte[] transformEntity(byte[] bytes) {
    ClassNode clazz = ASMHelper.createClassNode(bytes);

    MethodNode method = ASMHelper.getMethodNode(Opcodes.ACC_PUBLIC, ASMNames.MD_SAP_ENTITY_GET_BOUNDING_BOX);
    method.visitCode();//w  w  w .  ja va  2  s .c  o m
    Label l0 = new Label();
    method.visitLabel(l0);
    method.visitVarInsn(Opcodes.ALOAD, 2);
    method.visitInsn(Opcodes.ARETURN);
    Label l1 = new Label();
    method.visitLabel(l1);
    method.visitLocalVariable("this", ASMNames.CL_T_ENTITY, null, l0, l1, 0);
    method.visitLocalVariable("entity", ASMNames.CL_T_ENTITY, null, l0, l1, 1);
    method.visitLocalVariable("oldAABB", ASMNames.CL_T_AXIS_ALIGNED_BB, null, l0, l1, 2);
    method.visitMaxs(1, 2);
    method.visitEnd();

    clazz.methods.add(method);

    bytes = ASMHelper.createBytes(clazz, /*ClassWriter.COMPUTE_FRAMES |*/ ClassWriter.COMPUTE_MAXS);
    return bytes;
}

From source file:de.sanandrew.core.manpack.transformer.TransformEntityThrowable.java

License:Creative Commons License

private static byte[] transformLqThrowable(byte[] bytes) {
    ClassNode classNode = ASMHelper.createClassNode(bytes);

    MethodNode method = ASMHelper.getMethodNode(Opcodes.ACC_PUBLIC, ASMNames.MD_SAP_CAN_IMPACT_ON_LIQUID);

    method.visitCode();/*from ww w .j  av a  2  s.c o m*/
    Label label1 = new Label();
    method.visitLabel(label1);
    method.visitInsn(Opcodes.ICONST_0);
    method.visitInsn(Opcodes.IRETURN);
    Label label2 = new Label();
    method.visitLabel(label2);
    method.visitLocalVariable("this", ASMNames.CL_T_ENTITY_THROWABLE, null, label1, label2, 0);
    method.visitMaxs(0, 0);
    method.visitEnd();
    classNode.methods.add(method);

    method = ASMHelper.findMethod(classNode, ASMNames.MD_THROWABLE_ON_UPDATE);

    InsnList needle = new InsnList();
    needle.add(ASMHelper.getFieldInsnNode(Opcodes.GETFIELD, ASMNames.FD_THROWABLE_MOTION_Z));
    needle.add(new InsnNode(Opcodes.DADD));
    needle.add(ASMHelper.getMethodInsnNode(Opcodes.INVOKESTATIC, ASMNames.MD_VEC3_CREATE_VECTOR_HELPER, false));
    needle.add(new VarInsnNode(Opcodes.ASTORE, 2));
    needle.add(new LabelNode());
    needle.add(new LineNumberNode(-1, new LabelNode()));
    needle.add(new VarInsnNode(Opcodes.ALOAD, 0));
    needle.add(ASMHelper.getFieldInsnNode(Opcodes.GETFIELD, ASMNames.FD_THROWABLE_WORLD_OBJ));
    needle.add(new VarInsnNode(Opcodes.ALOAD, 1));
    needle.add(new VarInsnNode(Opcodes.ALOAD, 2));
    needle.add(ASMHelper.getMethodInsnNode(Opcodes.INVOKEVIRTUAL, ASMNames.MD_WORLD_RAY_TRACE_BLOCKS, false));
    needle.add(new VarInsnNode(Opcodes.ASTORE, -1));

    VarInsnNode insertPoint = (VarInsnNode) ASMHelper.findLastNodeFromNeedle(method.instructions, needle);

    InsnList injectList = new InsnList();
    injectList.add(new LabelNode());
    injectList.add(new VarInsnNode(Opcodes.ALOAD, 0));
    injectList.add(ASMHelper.getFieldInsnNode(Opcodes.GETFIELD, ASMNames.FD_THROWABLE_WORLD_OBJ));
    injectList.add(new VarInsnNode(Opcodes.ALOAD, 1));
    injectList.add(new VarInsnNode(Opcodes.ALOAD, 2));
    injectList.add(new VarInsnNode(Opcodes.ALOAD, 0));
    injectList.add(
            ASMHelper.getMethodInsnNode(Opcodes.INVOKEVIRTUAL, ASMNames.MD_SAP_CAN_IMPACT_ON_LIQUID, false));
    injectList.add(
            ASMHelper.getMethodInsnNode(Opcodes.INVOKEVIRTUAL, ASMNames.MD_WORLD_RAY_TRACE_BLOCKS_Z, false));
    injectList.add(new VarInsnNode(Opcodes.ASTORE, insertPoint.var));

    method.instructions.insert(insertPoint, injectList);

    return ASMHelper.createBytes(classNode, /*ClassWriter.COMPUTE_FRAMES |*/ ClassWriter.COMPUTE_MAXS);
}

From source file:de.sanandrew.core.manpack.transformer.TransformHorseArmor.java

License:Creative Commons License

private static MethodNode injectMethodGetCustomArmorItem() {
    MethodNode method = ASMHelper.getMethodNode(Opcodes.ACC_PRIVATE, ASMNames.MD_SAP_GET_CUSTOM_ARMOR_ITEM);
    method.visitCode();//from   w  w  w. j a  va 2s .  co m
    Label l0 = new Label();
    method.visitLabel(l0);
    method.visitVarInsn(Opcodes.ALOAD, 0);
    ASMHelper.visitFieldInsn(method, Opcodes.GETFIELD, ASMNames.FD_HORSE_DATAWATCHER);
    method.visitIntInsn(Opcodes.BIPUSH, 23);
    ASMHelper.visitMethodInsn(method, Opcodes.INVOKEVIRTUAL, ASMNames.MD_DATAWATCHER_GET_OBJ_STACK, false);
    method.visitInsn(Opcodes.ARETURN);
    Label l1 = new Label();
    method.visitLabel(l1);
    method.visitLocalVariable("this", ASMNames.CL_T_ENTITY_HORSE, null, l0, l1, 0);
    method.visitMaxs(2, 1);
    method.visitEnd();

    return method;
}

From source file:de.sanandrew.core.manpack.transformer.TransformHorseArmor.java

License:Creative Commons License

private static MethodNode injectMethodSetCustomArmorItem() {
    MethodNode method = ASMHelper.getMethodNode(Opcodes.ACC_PRIVATE, ASMNames.MD_SAP_SET_CUSTOM_ARMOR_ITEM);
    method.visitCode();// w w w.java  2  s  .  co  m
    Label l0 = new Label();
    method.visitLabel(l0);
    method.visitVarInsn(Opcodes.ALOAD, 1);
    Label l1 = new Label();
    method.visitJumpInsn(Opcodes.IFNONNULL, l1);
    method.visitTypeInsn(Opcodes.NEW, ASMNames.CL_ITEM_STACK);
    method.visitInsn(Opcodes.DUP);
    ASMHelper.visitFieldInsn(method, Opcodes.GETSTATIC, ASMNames.FD_ITEMS_IRON_SHOVEL);
    method.visitInsn(Opcodes.ICONST_0);
    ASMHelper.visitMethodInsn(method, Opcodes.INVOKESPECIAL, ASMNames.MD_ITEMSTACK_INIT, false);
    method.visitVarInsn(Opcodes.ASTORE, 1);
    method.visitLabel(l1);
    method.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
    method.visitVarInsn(Opcodes.ALOAD, 0);
    ASMHelper.visitFieldInsn(method, Opcodes.GETFIELD, ASMNames.FD_HORSE_DATAWATCHER);
    method.visitIntInsn(Opcodes.BIPUSH, 23);
    method.visitVarInsn(Opcodes.ALOAD, 1);
    ASMHelper.visitMethodInsn(method, Opcodes.INVOKEVIRTUAL, ASMNames.MD_DATAWATCHER_UPDATE_OBJ, false);
    Label l3 = new Label();
    method.visitLabel(l3);
    method.visitInsn(Opcodes.RETURN);
    Label l4 = new Label();
    method.visitLabel(l4);
    method.visitLocalVariable("this", ASMNames.CL_T_ENTITY_HORSE, null, l0, l3, 0);
    method.visitLocalVariable("stack", ASMNames.CL_T_ITEM_STACK, null, l0, l3, 1);
    method.visitMaxs(5, 2);
    method.visitEnd();

    return method;
}