List of usage examples for org.objectweb.asm Opcodes ALOAD
int ALOAD
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From source file:de.javanarior.vo.generator.ByteCodeGenerator.java
License:Apache License
/** * Generate a implementation of a value object. * * @param valueType/*w ww . j a v a 2 s . com*/ * - value object type * @param technicalType * - to which the value object is mapped * @param wrapperClass * - abstract wrapper class, correspond to the technical type * @return class name and byte code in a container */ /* CHECKSTYLE:OFF */ public static ByteCodeContainer generate(Class<?> valueType, Class<? extends Comparable<?>> technicalType, @SuppressWarnings("rawtypes") Class<? extends AbstractValue> wrapperClass) { /* CHECKSTYLE:ON */ if (!isInterface(valueType)) { throw new IllegalArgumentException("Could not generate implementation for class " + valueType.getName() + ". Please provide interface"); } ClassWriter classWriter = new ClassWriter(0); MethodVisitor methodVisitor; classWriter.visit(Opcodes.V1_7, Opcodes.ACC_PUBLIC + Opcodes.ACC_SUPER, implementationClassName(valueType), "L" + parentClassName(wrapperClass) + "<" + addTypeDiscriptor(valueType) + ">;" + addTypeDiscriptor(valueType), parentClassName(wrapperClass), implementedInterfaces(valueType)); methodVisitor = classWriter.visitMethod(Opcodes.ACC_PUBLIC, CONSTRUCTOR, methodDescriptor(technicalType), null, null); methodVisitor.visitCode(); Label label0 = new Label(); methodVisitor.visitLabel(label0); /* CHECKSTYLE:OFF */ methodVisitor.visitLineNumber(8, label0); /* CHECKSTYLE:ON */ methodVisitor.visitVarInsn(Opcodes.ALOAD, 0); methodVisitor.visitVarInsn(getILOADOpCode(technicalType), 1); methodVisitor.visitMethodInsn(Opcodes.INVOKESPECIAL, parentClassName(wrapperClass), CONSTRUCTOR, methodDescriptor(technicalType), false); Label label1 = new Label(); methodVisitor.visitLabel(label1); /* CHECKSTYLE:OFF */ methodVisitor.visitLineNumber(9, label1); /* CHECKSTYLE:ON */ methodVisitor.visitInsn(Opcodes.RETURN); Label label2 = new Label(); methodVisitor.visitLabel(label2); methodVisitor.visitLocalVariable("this", addTypeSignature(implementationClassName(valueType)), null, label0, label2, 0); methodVisitor.visitLocalVariable("value", getType(technicalType), null, label0, label2, 1); int stackSize = getStackSize(Type.getDescriptor(technicalType)); methodVisitor.visitMaxs(stackSize, stackSize); methodVisitor.visitEnd(); classWriter.visitEnd(); return new ByteCodeContainer(binaryClassName(valueType), classWriter.toByteArray()); }
From source file:de.kandid.model.Emitter.java
License:Apache License
/** * Assembles a class that implements the given interface by generating the byte code. * @param interfaze the interface to implement * @return the class// ww w . j a v a2s. c o m */ private static Class<? extends Emitter<?>> makeClass(Class<?> interfaze) { String nameClass = _nameEmitter + '$' + interfaze.getName().replace('.', '$'); String nameInterface = Type.getInternalName(interfaze); // ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS | ClassWriter.COMPUTE_FRAMES); ClassWriter cw = new ClassWriter(0); cw.visit(V1_4, ACC_PUBLIC + ACC_SUPER, nameClass, null, _nameEmitter, new String[] { name(interfaze) }); // Generate default construcotor MethodVisitor cv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null); cv.visitVarInsn(ALOAD, 0); cv.visitMethodInsn(INVOKESPECIAL, _nameEmitter, "<init>", "()V"); cv.visitInsn(RETURN); cv.visitMaxs(1, 1); // Generate methods Method[] methods = interfaze.getMethods(); for (int i = 0; i < methods.length; ++i) { final Method m = methods[i]; if (m.getReturnType() != void.class) throw new IllegalArgumentException("Method " + m.toGenericString() + " must not return a value"); final String descMethod = Type.getMethodDescriptor(m); final MethodVisitor mw = cw.visitMethod(ACC_PUBLIC + ACC_SYNCHRONIZED, m.getName(), descMethod, null, null); final Type[] argTypes = Type.getArgumentTypes(m); // for (int i = 0; i < _end; i += 2) // ((Listener) _listeners[i]).send(...); int localStart = 1; // give one for "this" for (Type at : argTypes) localStart += at.getSize(); Label entry = new Label(); Label exit = new Label(); mw.visitLabel(entry); // _isFiring = true; mw.visitVarInsn(ALOAD, 0); mw.visitInsn(Opcodes.ICONST_1); mw.visitFieldInsn(Opcodes.PUTFIELD, nameClass, "_isFiring", Type.BOOLEAN_TYPE.getDescriptor()); // setup local variables: i, _listeners, _end mw.visitLocalVariable("i", Type.INT_TYPE.getDescriptor(), null, entry, exit, localStart); mw.visitInsn(Opcodes.ICONST_0); mw.visitIntInsn(Opcodes.ISTORE, localStart); mw.visitLocalVariable("listeners", _descObjectArray, null, entry, exit, localStart + 1); mw.visitVarInsn(ALOAD, 0); mw.visitFieldInsn(GETFIELD, nameClass, "_listeners", _descObjectArray); mw.visitIntInsn(Opcodes.ASTORE, localStart + 1); mw.visitLocalVariable("end", Type.INT_TYPE.getDescriptor(), null, entry, exit, localStart + 2); mw.visitVarInsn(ALOAD, 0); mw.visitFieldInsn(GETFIELD, nameClass, "_end", Type.INT_TYPE.getDescriptor()); mw.visitIntInsn(Opcodes.ISTORE, localStart + 2); final Label condition = new Label(); mw.visitJumpInsn(GOTO, condition); final Label loop = new Label(); mw.visitLabel(loop); //((Listener) _listeners[i]).doSomething() mw.visitIntInsn(Opcodes.ALOAD, localStart + 1); mw.visitIntInsn(Opcodes.ILOAD, localStart); mw.visitInsn(Opcodes.AALOAD); mw.visitTypeInsn(CHECKCAST, nameInterface); int offs = 1; // give one for "this" for (Type at : argTypes) { mw.visitVarInsn(at.getOpcode(ILOAD), offs); offs += at.getSize(); } mw.visitMethodInsn(INVOKEINTERFACE, nameInterface, m.getName(), descMethod); // i += 2 mw.visitIincInsn(localStart, 2); // if (i < end) goto loop mw.visitLabel(condition); mw.visitIntInsn(Opcodes.ILOAD, localStart); mw.visitIntInsn(Opcodes.ILOAD, localStart + 2); mw.visitJumpInsn(Opcodes.IF_ICMPLT, loop); // _isFiring = false; mw.visitVarInsn(ALOAD, 0); mw.visitInsn(Opcodes.ICONST_0); mw.visitFieldInsn(Opcodes.PUTFIELD, nameClass, "_isFiring", Type.BOOLEAN_TYPE.getDescriptor()); mw.visitLabel(exit); mw.visitInsn(RETURN); mw.visitMaxs(localStart + 2, localStart + 3); mw.visitEnd(); } cw.visitEnd(); return _loader.loadClass(cw, nameClass.replace('/', '.')); }
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; }/* w ww .j a va 2 s. c o m*/ 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 w w .ja v a 2 s . co m 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 www . j a v a 2 s . c om*/ 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.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 2s .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[] transformEntity(byte[] bytes) { ClassNode clazz = ASMHelper.createClassNode(bytes); MethodNode method = ASMHelper.getMethodNode(Opcodes.ACC_PUBLIC, ASMNames.MD_SAP_ENTITY_GET_BOUNDING_BOX); method.visitCode();/*from w ww .ja v a 2 s. c om*/ 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.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 .j a v a 2s. co m 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();/*from w w w . j a v a2 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 v a 2 s . c om 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; }