Example usage for org.objectweb.asm.tree InsnList InsnList

List of usage examples for org.objectweb.asm.tree InsnList InsnList

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

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InsnList

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

License:Creative Commons License

private static byte[] transformEnderman(byte[] bytes) {
    ClassNode clazz = ASMHelper.createClassNode(bytes);
    MethodNode method = ASMHelper.findMethod(clazz, ASMNames.MD_ENDERMAN_SHOULD_ATTACK_PLAYER);

    InsnList needle = new InsnList();
    needle.add(new VarInsnNode(Opcodes.ALOAD, 1));
    needle.add(ASMHelper.getFieldInsnNode(Opcodes.GETFIELD, ASMNames.FD_PLAYER_INVENTORY));
    needle.add(ASMHelper.getFieldInsnNode(Opcodes.GETFIELD, ASMNames.FD_INVPLAYER_ARMOR_INVENTORY));
    needle.add(new InsnNode(Opcodes.ICONST_3));
    needle.add(new InsnNode(Opcodes.AALOAD));
    needle.add(new VarInsnNode(Opcodes.ASTORE, 2));

    AbstractInsnNode insertPt = ASMHelper.findFirstNodeFromNeedle(method.instructions, needle);

    InsnList newInstr = new InsnList();
    newInstr.add(ASMHelper.getFieldInsnNode(Opcodes.GETSTATIC, ASMNames.FD_SAPUTILS_EVENT_BUS));
    newInstr.add(new TypeInsnNode(Opcodes.NEW, ASMNames.CL_ENDER_FACING_EVENT));
    newInstr.add(new InsnNode(Opcodes.DUP));
    newInstr.add(new VarInsnNode(Opcodes.ALOAD, 1));
    newInstr.add(new VarInsnNode(Opcodes.ALOAD, 0));
    newInstr.add(ASMHelper.getMethodInsnNode(Opcodes.INVOKESPECIAL, ASMNames.MD_ENDERFACINGEVENT_INIT, false));
    newInstr.add(ASMHelper.getMethodInsnNode(Opcodes.INVOKEVIRTUAL, ASMNames.MD_EVENT_BUS_POST, false));
    LabelNode l1 = new LabelNode();
    newInstr.add(new JumpInsnNode(Opcodes.IFEQ, l1));
    newInstr.add(new InsnNode(Opcodes.ICONST_0));
    newInstr.add(new InsnNode(Opcodes.IRETURN));
    newInstr.add(l1);//from   ww w.ja v  a 2 s .  c o  m

    method.instructions.insertBefore(insertPt, newInstr);

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

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

License:Creative Commons License

private static byte[] transformWorld(byte[] bytes) {
    ClassNode clazz = ASMHelper.createClassNode(bytes);
    MethodNode method = ASMHelper.findMethod(clazz, ASMNames.MD_WORLD_GET_COLLIDING_BB);

    InsnList needle = new InsnList();
    LabelNode ln = new LabelNode();
    needle.add(ln);//from  w  w w .  jav  a2s. c  om
    needle.add(new LineNumberNode(-1, ln));
    needle.add(new VarInsnNode(Opcodes.ALOAD, 0));
    needle.add(new VarInsnNode(Opcodes.ALOAD, 1));
    needle.add(new VarInsnNode(Opcodes.ALOAD, 2));
    needle.add(new VarInsnNode(Opcodes.DLOAD, -1));
    needle.add(new VarInsnNode(Opcodes.DLOAD, -1));
    needle.add(new VarInsnNode(Opcodes.DLOAD, -1));
    needle.add(ASMHelper.getMethodInsnNode(Opcodes.INVOKEVIRTUAL, ASMNames.MD_AABB_EXPAND, false));
    needle.add(
            ASMHelper.getMethodInsnNode(Opcodes.INVOKEVIRTUAL, ASMNames.MD_WORLD_GET_ENTITIES_EXCLUDE, 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(ASMHelper.getFieldInsnNode(Opcodes.GETSTATIC, ASMNames.FD_SAPUTILS_EVENT_BUS));
    injectList.add(new TypeInsnNode(Opcodes.NEW, ASMNames.CL_COLLIDING_ENTITY_CHECK_EVENT));
    injectList.add(new InsnNode(Opcodes.DUP));
    injectList.add(new VarInsnNode(Opcodes.ALOAD, 0));
    injectList.add(new VarInsnNode(Opcodes.ALOAD, insertPoint.var));
    injectList.add(new VarInsnNode(Opcodes.ALOAD, 1));
    injectList.add(new VarInsnNode(Opcodes.ALOAD, 2));
    injectList.add(
            ASMHelper.getMethodInsnNode(Opcodes.INVOKESPECIAL, ASMNames.MD_SAP_COLLENTITYCHKEVT_INIT, false));
    injectList.add(ASMHelper.getMethodInsnNode(Opcodes.INVOKEVIRTUAL, ASMNames.MD_EVENT_BUS_POST, false));
    injectList.add(new InsnNode(Opcodes.POP));

    method.instructions.insert(insertPoint, injectList);

    // insert entity-sensitive bounding box method

    needle = new InsnList();
    ln = new LabelNode();
    needle.add(ln);
    needle.add(new LineNumberNode(-1, ln));
    needle.add(new VarInsnNode(Opcodes.ALOAD, 11));
    needle.add(new VarInsnNode(Opcodes.ILOAD, 12));
    needle.add(ASMHelper.getMethodInsnNode(Opcodes.INVOKEINTERFACE, ASMNames.MD_LIST_GET, true));
    needle.add(new TypeInsnNode(Opcodes.CHECKCAST, ASMNames.CL_ENTITY));
    needle.add(ASMHelper.getMethodInsnNode(Opcodes.INVOKEVIRTUAL, ASMNames.MD_ENTITY_GET_BOUNDING_BOX, false));
    needle.add(new VarInsnNode(Opcodes.ASTORE, -1));

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

    injectList = new InsnList();
    injectList.add(new LabelNode());
    injectList.add(new VarInsnNode(Opcodes.ALOAD, 11));
    injectList.add(new VarInsnNode(Opcodes.ILOAD, 12));
    injectList.add(ASMHelper.getMethodInsnNode(Opcodes.INVOKEINTERFACE, ASMNames.MD_LIST_GET, true));
    injectList.add(new TypeInsnNode(Opcodes.CHECKCAST, ASMNames.CL_ENTITY));
    injectList.add(new VarInsnNode(Opcodes.ALOAD, 1));
    injectList.add(new VarInsnNode(Opcodes.ALOAD, insertPoint.var));
    injectList.add(
            ASMHelper.getMethodInsnNode(Opcodes.INVOKEVIRTUAL, ASMNames.MD_SAP_ENTITY_GET_BOUNDING_BOX, false));
    injectList.add(new VarInsnNode(Opcodes.ASTORE, insertPoint.var));

    method.instructions.insert(insertPoint, injectList);

    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();//  www .  j  a  v  a  2s  .  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 void transformGetTotalArmorValue(MethodNode method) {
    InsnList needle = new InsnList();
    needle.add(new LabelNode());
    needle.add(new LineNumberNode(-1, new LabelNode()));
    needle.add(ASMHelper.getFieldInsnNode(Opcodes.GETSTATIC, ASMNames.FD_HORSE_ARMOR_VALUES));
    needle.add(new VarInsnNode(Opcodes.ALOAD, 0));
    needle.add(ASMHelper.getMethodInsnNode(Opcodes.INVOKEVIRTUAL, ASMNames.MD_HORSE_FUNC110241CB, false));

    AbstractInsnNode pointer = ASMHelper.findFirstNodeFromNeedle(method.instructions, needle);

    InsnList newInstr = new InsnList();

    newInstr.add(new LabelNode());
    newInstr.add(new VarInsnNode(Opcodes.ALOAD, 0));
    newInstr.add(/*  w  w w. j ava 2  s . co m*/
            ASMHelper.getMethodInsnNode(Opcodes.INVOKESPECIAL, ASMNames.MD_SAP_GET_CUSTOM_ARMOR_ITEM, false));
    newInstr.add(new VarInsnNode(Opcodes.ASTORE, 1));
    newInstr.add(new LabelNode());
    newInstr.add(new VarInsnNode(Opcodes.ALOAD, 1));
    newInstr.add(ASMHelper.getMethodInsnNode(Opcodes.INVOKEVIRTUAL, ASMNames.MD_ITEMSTACK_GET_ITEM, false));
    newInstr.add(new TypeInsnNode(Opcodes.INSTANCEOF, ASMNames.CL_ITEM_HORSE_ARMOR));
    LabelNode l2 = new LabelNode();
    newInstr.add(new JumpInsnNode(Opcodes.IFEQ, l2));
    newInstr.add(new LabelNode());
    newInstr.add(new VarInsnNode(Opcodes.ALOAD, 1));
    newInstr.add(ASMHelper.getMethodInsnNode(Opcodes.INVOKEVIRTUAL, ASMNames.MD_ITEMSTACK_GET_ITEM, false));
    newInstr.add(new TypeInsnNode(Opcodes.CHECKCAST, ASMNames.CL_ITEM_HORSE_ARMOR));
    newInstr.add(new VarInsnNode(Opcodes.ALOAD, 0));
    newInstr.add(new VarInsnNode(Opcodes.ALOAD, 1));
    newInstr.add(ASMHelper.getMethodInsnNode(Opcodes.INVOKEVIRTUAL, ASMNames.MD_SAP_GET_ARMOR_VALUE, false));
    newInstr.add(new InsnNode(Opcodes.IRETURN));
    newInstr.add(l2);

    method.instructions.insertBefore(pointer, newInstr);
}

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

License:Creative Commons License

private static void transformOnInvChanged(MethodNode method) {
    InsnList needle = new InsnList();
    needle.add(new VarInsnNode(Opcodes.ALOAD, 0));
    needle.add(ASMHelper.getMethodInsnNode(Opcodes.INVOKEVIRTUAL, ASMNames.MD_HORSE_IS_SADDLED, false));
    needle.add(new VarInsnNode(Opcodes.ISTORE, 3));

    AbstractInsnNode pointer = ASMHelper.findLastNodeFromNeedle(method.instructions, needle);

    InsnList newInstr = new InsnList();
    newInstr.add(new LabelNode());
    newInstr.add(new VarInsnNode(Opcodes.ALOAD, 0));
    newInstr.add(/*from  ww  w . j a v  a2  s . c om*/
            ASMHelper.getMethodInsnNode(Opcodes.INVOKESPECIAL, ASMNames.MD_SAP_GET_CUSTOM_ARMOR_ITEM, false));
    newInstr.add(new VarInsnNode(Opcodes.ASTORE, 4));

    method.instructions.insert(pointer, newInstr);

    needle = new InsnList();
    needle.add(new LdcInsnNode("mob.horse.armor"));
    needle.add(new LdcInsnNode(0.5F));
    needle.add(new InsnNode(Opcodes.FCONST_1));
    needle.add(ASMHelper.getMethodInsnNode(Opcodes.INVOKEVIRTUAL, ASMNames.MD_HORSE_PLAY_SOUND, false));
    needle.add(new LabelNode());

    pointer = ASMHelper.findLastNodeFromNeedle(method.instructions, needle);

    newInstr = new InsnList();
    newInstr.add(new VarInsnNode(Opcodes.ALOAD, 4));
    newInstr.add(ASMHelper.getMethodInsnNode(Opcodes.INVOKEVIRTUAL, ASMNames.MD_ITEMSTACK_GET_ITEM, false));
    newInstr.add(ASMHelper.getFieldInsnNode(Opcodes.GETSTATIC, ASMNames.FD_ITEMS_IRON_SHOVEL));
    LabelNode l9 = new LabelNode();
    newInstr.add(new JumpInsnNode(Opcodes.IF_ACMPNE, l9));
    newInstr.add(new VarInsnNode(Opcodes.ALOAD, 4));
    newInstr.add(new VarInsnNode(Opcodes.ALOAD, 0));
    newInstr.add(
            ASMHelper.getMethodInsnNode(Opcodes.INVOKESPECIAL, ASMNames.MD_SAP_GET_CUSTOM_ARMOR_ITEM, false));
    newInstr.add(
            ASMHelper.getMethodInsnNode(Opcodes.INVOKEVIRTUAL, ASMNames.MD_ITEMSTACK_IS_ITEM_EQUAL, false));
    newInstr.add(new JumpInsnNode(Opcodes.IFNE, l9));
    newInstr.add(new LabelNode());
    newInstr.add(new VarInsnNode(Opcodes.ALOAD, 0));
    newInstr.add(new LdcInsnNode("mob.horse.armor"));
    newInstr.add(new LdcInsnNode(0.5F));
    newInstr.add(new InsnNode(Opcodes.FCONST_1));
    newInstr.add(ASMHelper.getMethodInsnNode(Opcodes.INVOKEVIRTUAL, ASMNames.MD_HORSE_PLAY_SOUND, false));
    newInstr.add(l9);

    method.instructions.insert(pointer, newInstr);
}

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

License:Creative Commons License

private static void transformArmorTexture(MethodNode method) {
    InsnList needle = new InsnList();
    needle.add(new VarInsnNode(Opcodes.ALOAD, 0));
    needle.add(ASMHelper.getMethodInsnNode(Opcodes.INVOKEVIRTUAL, ASMNames.MD_HORSE_FUNC110241CB, false));
    needle.add(new VarInsnNode(Opcodes.ISTORE, 3));

    AbstractInsnNode node = ASMHelper.findLastNodeFromNeedle(method.instructions, needle);

    InsnList newInstr = new InsnList();
    LabelNode l17 = new LabelNode();
    newInstr.add(l17);//  w ww.j av  a 2 s  .c om
    newInstr.add(new VarInsnNode(Opcodes.ALOAD, 0));
    newInstr.add(
            ASMHelper.getMethodInsnNode(Opcodes.INVOKESPECIAL, ASMNames.MD_SAP_GET_CUSTOM_ARMOR_ITEM, false));
    newInstr.add(new VarInsnNode(Opcodes.ASTORE, 4));
    LabelNode l18 = new LabelNode();
    newInstr.add(l18);
    newInstr.add(new VarInsnNode(Opcodes.ALOAD, 4));
    newInstr.add(ASMHelper.getMethodInsnNode(Opcodes.INVOKEVIRTUAL, ASMNames.MD_ITEMSTACK_GET_ITEM, false));
    newInstr.add(new TypeInsnNode(Opcodes.INSTANCEOF, ASMNames.CL_ITEM_HORSE_ARMOR));
    LabelNode l19 = new LabelNode();
    newInstr.add(new JumpInsnNode(Opcodes.IFEQ, l19));
    LabelNode l20 = new LabelNode();
    newInstr.add(l20);
    newInstr.add(new VarInsnNode(Opcodes.ALOAD, 0));
    newInstr.add(ASMHelper.getFieldInsnNode(Opcodes.GETFIELD, ASMNames.FD_HORSE_FIELD110280BR));
    newInstr.add(new InsnNode(Opcodes.ICONST_2));
    newInstr.add(new VarInsnNode(Opcodes.ALOAD, 4));
    newInstr.add(ASMHelper.getMethodInsnNode(Opcodes.INVOKEVIRTUAL, ASMNames.MD_ITEMSTACK_GET_ITEM, false));
    newInstr.add(new TypeInsnNode(Opcodes.CHECKCAST, ASMNames.CL_ITEM_HORSE_ARMOR));
    newInstr.add(new VarInsnNode(Opcodes.ALOAD, 0));
    newInstr.add(new VarInsnNode(Opcodes.ALOAD, 4));
    newInstr.add(ASMHelper.getMethodInsnNode(Opcodes.INVOKEVIRTUAL, ASMNames.MD_SAP_GET_ARMOR_TEXTURE, false));
    newInstr.add(new InsnNode(Opcodes.AASTORE));
    LabelNode l21 = new LabelNode();
    newInstr.add(l21);
    newInstr.add(new VarInsnNode(Opcodes.ALOAD, 0));
    newInstr.add(new TypeInsnNode(Opcodes.NEW, ASMNames.CL_STRING_BUILDER));
    newInstr.add(new InsnNode(Opcodes.DUP));
    newInstr.add(new VarInsnNode(Opcodes.ALOAD, 0));
    newInstr.add(ASMHelper.getFieldInsnNode(Opcodes.GETFIELD, ASMNames.FD_HORSE_FIELD110286BQ));
    newInstr.add(ASMHelper.getMethodInsnNode(Opcodes.INVOKESTATIC, ASMNames.MD_STRING_VALUE_OF, false));
    newInstr.add(ASMHelper.getMethodInsnNode(Opcodes.INVOKESPECIAL, ASMNames.MD_STRINGBUILDER_INIT, false));
    newInstr.add(new LdcInsnNode("cst-"));
    newInstr.add(ASMHelper.getMethodInsnNode(Opcodes.INVOKEVIRTUAL, ASMNames.MD_STRINGBUILDER_APPEND, false));
    newInstr.add(new VarInsnNode(Opcodes.ALOAD, 4));
    newInstr.add(
            ASMHelper.getMethodInsnNode(Opcodes.INVOKEVIRTUAL, ASMNames.MD_ITEMSTACK_GET_UNLOC_NAME, false));
    newInstr.add(ASMHelper.getMethodInsnNode(Opcodes.INVOKEVIRTUAL, ASMNames.MD_STRINGBUILDER_APPEND, false));
    newInstr.add(
            ASMHelper.getMethodInsnNode(Opcodes.INVOKEVIRTUAL, ASMNames.MD_STRINGBUILDER_TO_STRING, false));
    newInstr.add(ASMHelper.getFieldInsnNode(Opcodes.PUTFIELD, ASMNames.FD_HORSE_FIELD110286BQ));
    newInstr.add(new InsnNode(Opcodes.RETURN));
    newInstr.add(l19);

    method.instructions.insert(node, newInstr);
}

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

License:Creative Commons License

private static void transformUpdateHorseSlots(MethodNode method) {
    InsnList needle = new InsnList();
    needle.add(new VarInsnNode(Opcodes.ALOAD, 0));
    needle.add(new VarInsnNode(Opcodes.ALOAD, 0));
    needle.add(ASMHelper.getFieldInsnNode(Opcodes.GETFIELD, ASMNames.FD_HORSE_CHEST));
    needle.add(new InsnNode(Opcodes.ICONST_1));

    AbstractInsnNode pointer = ASMHelper.findFirstNodeFromNeedle(method.instructions, needle);

    InsnList newInstr = new InsnList();
    newInstr.add(new VarInsnNode(Opcodes.ALOAD, 0));
    newInstr.add(new VarInsnNode(Opcodes.ALOAD, 0));
    newInstr.add(ASMHelper.getFieldInsnNode(Opcodes.GETFIELD, ASMNames.FD_HORSE_CHEST));
    newInstr.add(new InsnNode(Opcodes.ICONST_1));
    newInstr.add(ASMHelper.getMethodInsnNode(Opcodes.INVOKEVIRTUAL, ASMNames.MD_ANIMALCHEST_GET_STACK_IN_SLOT,
            false));//w  w w. ja v  a 2 s .  com
    newInstr.add(
            ASMHelper.getMethodInsnNode(Opcodes.INVOKESPECIAL, ASMNames.MD_SAP_SET_CUSTOM_ARMOR_ITEM, false));
    newInstr.add(new LabelNode());

    method.instructions.insertBefore(pointer, newInstr);
}

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

License:Creative Commons License

private static void transformEntityInit(MethodNode method) {
    InsnList needle = new InsnList();
    needle.add(new VarInsnNode(Opcodes.ALOAD, 0));
    needle.add(ASMHelper.getFieldInsnNode(Opcodes.GETFIELD, ASMNames.FD_HORSE_DATAWATCHER));
    needle.add(new IntInsnNode(Opcodes.BIPUSH, 22));
    needle.add(new InsnNode(Opcodes.ICONST_0));
    needle.add(ASMHelper.getMethodInsnNode(Opcodes.INVOKESTATIC, ASMNames.MD_INTEGER_VALUE_OF, false));
    needle.add(ASMHelper.getMethodInsnNode(Opcodes.INVOKEVIRTUAL, ASMNames.MD_DATAWATCHER_ADD_OBJECT, false));

    AbstractInsnNode pointer = ASMHelper.findLastNodeFromNeedle(method.instructions, needle);

    InsnList newInstr = new InsnList();
    newInstr.add(new LabelNode());
    newInstr.add(new VarInsnNode(Opcodes.ALOAD, 0));
    newInstr.add(ASMHelper.getFieldInsnNode(Opcodes.GETFIELD, ASMNames.FD_HORSE_DATAWATCHER));
    newInstr.add(new IntInsnNode(Opcodes.BIPUSH, 23));
    newInstr.add(new TypeInsnNode(Opcodes.NEW, ASMNames.CL_ITEM_STACK));
    newInstr.add(new InsnNode(Opcodes.DUP));
    newInstr.add(ASMHelper.getFieldInsnNode(Opcodes.GETSTATIC, ASMNames.FD_ITEMS_IRON_SHOVEL));
    newInstr.add(new InsnNode(Opcodes.ICONST_0));
    newInstr.add(ASMHelper.getMethodInsnNode(Opcodes.INVOKESPECIAL, ASMNames.MD_ITEMSTACK_INIT, false));
    newInstr.add(ASMHelper.getMethodInsnNode(Opcodes.INVOKEVIRTUAL, ASMNames.MD_DATAWATCHER_ADD_OBJECT, false));

    method.instructions.insert(pointer, newInstr);
}

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

License:Creative Commons License

private static void transformIsValidArmor(MethodNode method) {
    InsnList needle = new InsnList();
    needle.add(new LabelNode());
    needle.add(new LineNumberNode(-1, new LabelNode()));
    needle.add(new VarInsnNode(Opcodes.ALOAD, 0));
    needle.add(ASMHelper.getFieldInsnNode(Opcodes.GETSTATIC, ASMNames.FD_ITEMS_IRON_HORSE_ARMOR));
    needle.add(new JumpInsnNode(Opcodes.IF_ACMPEQ, new LabelNode()));

    AbstractInsnNode node = ASMHelper.findFirstNodeFromNeedle(method.instructions, needle);

    InsnList newInstr = new InsnList();
    newInstr.add(new LabelNode());
    newInstr.add(new VarInsnNode(Opcodes.ALOAD, 0));
    newInstr.add(new TypeInsnNode(Opcodes.INSTANCEOF, ASMNames.CL_ITEM_HORSE_ARMOR));
    LabelNode ln = new LabelNode();
    newInstr.add(new JumpInsnNode(Opcodes.IFEQ, ln));
    newInstr.add(new LabelNode());
    newInstr.add(new InsnNode(Opcodes.ICONST_1));
    newInstr.add(new InsnNode(Opcodes.IRETURN));
    newInstr.add(ln);//from   w  ww  .  jav a 2s  . c  o  m

    method.instructions.insertBefore(node, newInstr);
}

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

License:Creative Commons License

private static void transformInteract(MethodNode method) {

    InsnList needle = new InsnList();
    needle.add(ASMHelper.getFieldInsnNode(Opcodes.GETSTATIC, ASMNames.FD_ITEMS_DIAMOND_HORSE_ARMOR));
    needle.add(new JumpInsnNode(Opcodes.IF_ACMPNE, new LabelNode()));
    needle.add(new LabelNode());
    needle.add(new LineNumberNode(-1, new LabelNode()));
    needle.add(new InsnNode(Opcodes.ICONST_3));
    needle.add(new VarInsnNode(Opcodes.ISTORE, 4));
    needle.add(new LabelNode());
    needle.add(new LineNumberNode(-1, new LabelNode()));
    needle.add(new FrameNode(Opcodes.F_SAME, 0, null, 0, null));

    AbstractInsnNode node = ASMHelper.findLastNodeFromNeedle(method.instructions, needle);

    InsnList newInstr = new InsnList();
    newInstr.add(new LabelNode());
    newInstr.add(new VarInsnNode(Opcodes.ALOAD, 2));
    newInstr.add(ASMHelper.getMethodInsnNode(Opcodes.INVOKEVIRTUAL, ASMNames.MD_ITEMSTACK_GET_ITEM, false));
    newInstr.add(new TypeInsnNode(Opcodes.INSTANCEOF, ASMNames.CL_ITEM_HORSE_ARMOR));
    LabelNode l8 = new LabelNode();
    newInstr.add(new JumpInsnNode(Opcodes.IFEQ, l8));
    newInstr.add(new LabelNode());
    newInstr.add(new InsnNode(Opcodes.ICONST_4));
    newInstr.add(new VarInsnNode(Opcodes.ISTORE, 4));
    newInstr.add(l8);//from  w w w.  jav  a2s  . co m
    newInstr.add(new FrameNode(Opcodes.F_SAME, 0, null, 0, null));

    method.instructions.insert(node, newInstr);
}