List of usage examples for org.objectweb.asm MethodVisitor visitMaxs
public void visitMaxs(final int maxStack, final int maxLocals)
From source file:blockphysics.asm.BPTransformer.java
License:Open Source License
private byte[] transformEntityBoat(byte[] bytes) { /*try//from w ww . j a v a 2 s. c o m { FileOutputStream fos = new FileOutputStream("d:/EntityBoat.orig.class"); fos.write(bytes); fos.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); }*/ System.out.print("[BlockPhysics] Patching EntityBoat.class .............."); ClassNode classNode = new ClassNode(); ClassReader classReader = new ClassReader(bytes); classReader.accept(classNode, 0); ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS); classNode.accept(cw); MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "al", "()V", null, null); mv.visitCode(); mv.visitInsn(RETURN); mv.visitMaxs(0, 1); mv.visitEnd(); cw.visitEnd(); System.out.println("OK"); /*try { FileOutputStream fos = new FileOutputStream("d:/EntityBoat.class"); fos.write(cw.toByteArray()); fos.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); }*/ return cw.toByteArray(); }
From source file:blockphysics.asm.BPTransformer.java
License:Open Source License
private byte[] transformEntityFallingSand(byte[] bytes) { /*try// ww w .j a va 2 s .c o m { FileOutputStream fos = new FileOutputStream("d:/EntityFallingSand.orig.class"); fos.write(bytes); fos.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); }*/ System.out.print("[BlockPhysics] Patching EntityFallingSand.class ......."); boolean ok = false; boolean ok2 = false; boolean ok3 = false; boolean ok4 = false; boolean ok5 = false; boolean ok6 = false; boolean ok7 = false; boolean ok8 = false; boolean ok9 = false, ok10 = false; ClassNode classNode = new ClassNode(); ClassReader classReader = new ClassReader(bytes); classReader.accept(classNode, 0); MethodNode m; Iterator<MethodNode> methods = classNode.methods.iterator(); while (methods.hasNext()) { m = methods.next(); if (m.name.equals("<init>") && m.desc.equals("(Labv;)V")) { for (int index = m.instructions.size() - 1; index >= 0; index--) { if (m.instructions.get(index).getOpcode() == RETURN) { InsnList toInject = new InsnList(); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new InsnNode(ICONST_1)); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "m", "Z")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new LdcInsnNode(new Float("0.996"))); toInject.add(new LdcInsnNode(new Float("0.996"))); toInject.add(new MethodInsnNode(INVOKEVIRTUAL, "sq", "a", "(FF)V")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "sq", "P", "F")); toInject.add(new InsnNode(FCONST_2)); toInject.add(new InsnNode(FDIV)); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "N", "F")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new InsnNode(DCONST_0)); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "x", "D")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new InsnNode(DCONST_0)); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "y", "D")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new InsnNode(DCONST_0)); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "z", "D")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new InsnNode(DCONST_0)); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "accelerationX", "D")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new LdcInsnNode(new Double("-0.024525"))); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "accelerationY", "D")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new InsnNode(DCONST_0)); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "accelerationZ", "D")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new InsnNode(ICONST_0)); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "slideDir", "B")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new InsnNode(ICONST_1)); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "Z", "Z")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new LdcInsnNode(new Float("0.8"))); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "aa", "F")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new InsnNode(ICONST_4)); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "dead", "B")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new InsnNode(ICONST_0)); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "bpdata", "I")); m.instructions.insertBefore(m.instructions.get(index), toInject); ok10 = true; break; } } } else if (m.name.equals("<init>") && m.desc.equals("(Labv;DDDII)V")) { for (int index = 0; index < m.instructions.size(); index++) { if (m.instructions.get(index).getOpcode() == INVOKEVIRTUAL && m.instructions.get(index).getType() == AbstractInsnNode.METHOD_INSN && ((MethodInsnNode) m.instructions.get(index)).owner.equals("sq") && ((MethodInsnNode) m.instructions.get(index)).name.equals("a")) { m.instructions.set(m.instructions.get(index - 1), new LdcInsnNode(new Float("0.996"))); m.instructions.set(m.instructions.get(index - 2), new LdcInsnNode(new Float("0.996"))); ok = true; break; } } for (int index = m.instructions.size() - 1; index >= 0; index--) { if (m.instructions.get(index).getOpcode() == RETURN) { InsnList toInject = new InsnList(); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new InsnNode(DCONST_0)); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "accelerationX", "D")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new LdcInsnNode(new Double("-0.024525"))); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "accelerationY", "D")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new InsnNode(DCONST_0)); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "accelerationZ", "D")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new InsnNode(ICONST_0)); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "slideDir", "B")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new InsnNode(ICONST_1)); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "Z", "Z")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new LdcInsnNode(new Float("0.8"))); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "aa", "F")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new InsnNode(ICONST_4)); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "dead", "B")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new InsnNode(ICONST_0)); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "bpdata", "I")); m.instructions.insertBefore(m.instructions.get(index), toInject); ok2 = true; break; } } } else if (m.name.equals("K") && m.desc.equals("()Z")) { InsnList toInject = new InsnList(); toInject.add(new InsnNode(ICONST_0)); toInject.add(new InsnNode(IRETURN)); m.instructions.clear(); m.localVariables.clear(); m.instructions.add(toInject); ok9 = true; } else if (m.name.equals("l_") && m.desc.equals("()V")) { InsnList toInject = new InsnList(); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "sq", "q", "Labv;")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new MethodInsnNode(INVOKESTATIC, "blockphysics/BlockPhysics", "fallingSandUpdate", "(Labv;Lsq;)V")); toInject.add(new InsnNode(RETURN)); m.instructions.clear(); m.localVariables.clear(); m.instructions.add(toInject); ok3 = true; } else if (m.name.equals("b") && m.desc.equals("(F)V")) { m.instructions.clear(); m.localVariables.clear(); m.instructions.add(new InsnNode(RETURN)); ok4 = true; } else if (m.name.equals("b") && m.desc.equals("(Lbx;)V")) { for (int index = m.instructions.size() - 1; index >= 0; index--) { if (m.instructions.get(index).getOpcode() == RETURN) { InsnList toInject = new InsnList(); toInject.add(new VarInsnNode(ALOAD, 1)); toInject.add(new LdcInsnNode("Acceleration")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new InsnNode(ICONST_3)); toInject.add(new IntInsnNode(NEWARRAY, T_DOUBLE)); toInject.add(new InsnNode(DUP)); toInject.add(new InsnNode(ICONST_0)); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "sq", "accelerationX", "D")); toInject.add(new InsnNode(DASTORE)); toInject.add(new InsnNode(DUP)); toInject.add(new InsnNode(ICONST_1)); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "sq", "accelerationY", "D")); toInject.add(new InsnNode(DASTORE)); toInject.add(new InsnNode(DUP)); toInject.add(new InsnNode(ICONST_2)); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "sq", "accelerationZ", "D")); toInject.add(new InsnNode(DASTORE)); toInject.add(new MethodInsnNode(INVOKEVIRTUAL, "sq", "a", "([D)Lcf;")); toInject.add(new MethodInsnNode(INVOKEVIRTUAL, "bx", "a", "(Ljava/lang/String;Lck;)V")); toInject.add(new VarInsnNode(ALOAD, 1)); toInject.add(new LdcInsnNode("BPData")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new FieldInsnNode(GETFIELD, "sq", "bpdata", "I")); toInject.add(new InsnNode(I2B)); toInject.add(new MethodInsnNode(INVOKEVIRTUAL, "bx", "a", "(Ljava/lang/String;B)V")); m.instructions.insertBefore(m.instructions.get(index), toInject); ok5 = true; break; } } } else if (m.name.equals("a") && m.desc.equals("(Lbx;)V")) { while (!(m.instructions.get(0).getType() == AbstractInsnNode.LDC_INSN && ((LdcInsnNode) m.instructions.get(0)).cst.equals("Data"))) { m.instructions.remove(m.instructions.get(0)); ok6 = true; } InsnList toInject = new InsnList(); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new VarInsnNode(ALOAD, 1)); toInject.add(new MethodInsnNode(INVOKESTATIC, "blockphysics/BlockPhysics", "readFallingSandID", "(Lbx;)I")); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "a", "I")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new VarInsnNode(ALOAD, 1)); m.instructions.insertBefore(m.instructions.get(0), toInject); for (int index = m.instructions.size() - 1; index >= 0; index--) { if (m.instructions.get(index).getOpcode() == RETURN) { toInject = new InsnList(); toInject.add(new VarInsnNode(ALOAD, 1)); toInject.add(new LdcInsnNode("Acceleration")); toInject.add(new MethodInsnNode(INVOKEVIRTUAL, "bx", "b", "(Ljava/lang/String;)Z")); LabelNode l4 = new LabelNode(); toInject.add(new JumpInsnNode(IFEQ, l4)); toInject.add(new VarInsnNode(ALOAD, 1)); toInject.add(new LdcInsnNode("Acceleration")); toInject.add(new MethodInsnNode(INVOKEVIRTUAL, "bx", "m", "(Ljava/lang/String;)Lcf;")); toInject.add(new VarInsnNode(ASTORE, 2)); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new VarInsnNode(ALOAD, 2)); toInject.add(new InsnNode(ICONST_0)); toInject.add(new MethodInsnNode(INVOKEVIRTUAL, "cf", "b", "(I)Lck;")); toInject.add(new TypeInsnNode(CHECKCAST, "ca")); toInject.add(new FieldInsnNode(GETFIELD, "ca", "a", "D")); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "accelerationX", "D")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new VarInsnNode(ALOAD, 2)); toInject.add(new InsnNode(ICONST_1)); toInject.add(new MethodInsnNode(INVOKEVIRTUAL, "cf", "b", "(I)Lck;")); toInject.add(new TypeInsnNode(CHECKCAST, "ca")); toInject.add(new FieldInsnNode(GETFIELD, "ca", "a", "D")); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "accelerationY", "D")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new VarInsnNode(ALOAD, 2)); toInject.add(new InsnNode(ICONST_2)); toInject.add(new MethodInsnNode(INVOKEVIRTUAL, "cf", "b", "(I)Lck;")); toInject.add(new TypeInsnNode(CHECKCAST, "ca")); toInject.add(new FieldInsnNode(GETFIELD, "ca", "a", "D")); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "accelerationZ", "D")); LabelNode l5 = new LabelNode(); toInject.add(new JumpInsnNode(GOTO, l5)); toInject.add(l4); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new InsnNode(DCONST_0)); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "accelerationX", "D")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new InsnNode(DCONST_0)); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "accelerationY", "D")); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new InsnNode(DCONST_0)); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "accelerationZ", "D")); toInject.add(l5); toInject.add(new VarInsnNode(ALOAD, 1)); toInject.add(new LdcInsnNode("BPData")); toInject.add(new MethodInsnNode(INVOKEVIRTUAL, "bx", "b", "(Ljava/lang/String;)Z")); LabelNode l7 = new LabelNode(); toInject.add(new JumpInsnNode(IFEQ, l7)); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new VarInsnNode(ALOAD, 1)); toInject.add(new LdcInsnNode("BPData")); toInject.add(new MethodInsnNode(INVOKEVIRTUAL, "bx", "c", "(Ljava/lang/String;)B")); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "bpdata", "I")); LabelNode l8 = new LabelNode(); toInject.add(new JumpInsnNode(GOTO, l8)); toInject.add(l7); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new InsnNode(ICONST_0)); toInject.add(new FieldInsnNode(PUTFIELD, "sq", "bpdata", "I")); toInject.add(l8); m.instructions.insertBefore(m.instructions.get(index), toInject); ok7 = true; break; } } } else if (m.name.equals("au") && m.desc.equals("()Z")) { InsnList toInject = new InsnList(); toInject.add(new VarInsnNode(ALOAD, 0)); toInject.add(new MethodInsnNode(INVOKEVIRTUAL, "sq", "ae", "()Z")); toInject.add(new InsnNode(IRETURN)); m.instructions.clear(); m.localVariables.clear(); m.instructions.add(toInject); ok8 = true; } } ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS); classNode.accept(cw); FieldVisitor fv; fv = cw.visitField(ACC_PUBLIC, "accelerationX", "D", null, null); fv.visitEnd(); fv = cw.visitField(ACC_PUBLIC, "accelerationY", "D", null, null); fv.visitEnd(); fv = cw.visitField(ACC_PUBLIC, "accelerationZ", "D", null, null); fv.visitEnd(); fv = cw.visitField(ACC_PUBLIC, "bpdata", "I", null, null); fv.visitEnd(); fv = cw.visitField(ACC_PUBLIC, "slideDir", "B", null, null); fv.visitEnd(); fv = cw.visitField(ACC_PUBLIC, "media", "I", null, null); fv.visitEnd(); fv = cw.visitField(ACC_PUBLIC, "dead", "B", null, null); fv.visitEnd(); MethodVisitor mv; mv = cw.visitMethod(ACC_PUBLIC, "D", "()Lasu;", null, null); mv.visitCode(); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, "sq", "E", "Lasu;"); mv.visitInsn(ARETURN); mv.visitMaxs(1, 1); mv.visitEnd(); mv = cw.visitMethod(ACC_PUBLIC, "al", "()V", null, null); mv.visitCode(); mv.visitInsn(RETURN); mv.visitMaxs(0, 1); mv.visitEnd(); mv = cw.visitMethod(ACC_PUBLIC, "d", "(DDD)V", null, null); mv.visitCode(); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, "sq", "q", "Labv;"); mv.visitVarInsn(ALOAD, 0); mv.visitVarInsn(DLOAD, 1); mv.visitVarInsn(DLOAD, 3); mv.visitVarInsn(DLOAD, 5); mv.visitMethodInsn(INVOKESTATIC, "blockphysics/BlockPhysics", "moveEntity", "(Labv;Lsq;DDD)V"); mv.visitInsn(RETURN); mv.visitMaxs(8, 7); mv.visitEnd(); if (!ok8) { mv = cw.visitMethod(ACC_PUBLIC, "au", "()Z", null, null); mv.visitCode(); mv.visitVarInsn(ALOAD, 0); mv.visitMethodInsn(INVOKEVIRTUAL, "sq", "ae", "()Z"); mv.visitInsn(IRETURN); mv.visitMaxs(0, 0); mv.visitEnd(); ok8 = true; } cw.visitEnd(); if (ok && ok2 && ok3 && ok4 && ok5 && ok6 && ok7 && ok8 && ok9 && ok10) System.out.println("OK"); else System.out.println("Failed." + ok + ok2 + ok3 + ok4 + ok5 + ok6 + ok7 + ok8 + ok9 + ok10); /*try { FileOutputStream fos = new FileOutputStream("d:/EntityFallingSand.class"); fos.write(cw.toByteArray()); fos.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); }*/ return cw.toByteArray(); }
From source file:blue.lapis.pore.event.PoreListenerGenerator.java
License:Open Source License
private static byte[] generate(String name, Class<?> pore, Class<?> sponge, EventPriority priority, Order order) {/* w w w . j a va 2 s. c o m*/ name = name.replace('.', '/'); String poreName = Type.getInternalName(pore); String spongeSignature = "(L" + Type.getInternalName(sponge) + ";)V"; ClassWriter cw = new ClassWriter(0); MethodVisitor mv; AnnotationVisitor av; cw.visit(V1_6, ACC_PUBLIC + ACC_FINAL + ACC_SUPER, name, null, "java/lang/Object", null); { mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null); mv.visitCode(); mv.visitVarInsn(ALOAD, 0); mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false); mv.visitInsn(RETURN); mv.visitMaxs(1, 1); mv.visitEnd(); } { mv = cw.visitMethod(ACC_PUBLIC, "on" + sponge.getSimpleName(), spongeSignature, null, null); { av = mv.visitAnnotation(ANNOTATION_DESCRIPTOR, true); av.visitEnum("order", ORDER_DESCRIPTOR, order.name()); av.visitEnd(); } mv.visitCode(); mv.visitVarInsn(ALOAD, 1); mv.visitMethodInsn(INVOKESTATIC, EVENT_WRAPPER_CLASS, "get", GET_CACHE, false); mv.visitTypeInsn(CHECKCAST, poreName); mv.visitVarInsn(ASTORE, 2); mv.visitVarInsn(ALOAD, 2); Label l0 = new Label(); mv.visitJumpInsn(IFNONNULL, l0); mv.visitVarInsn(ALOAD, 1); mv.visitTypeInsn(NEW, poreName); mv.visitInsn(DUP); mv.visitVarInsn(ALOAD, 1); mv.visitMethodInsn(INVOKESPECIAL, poreName, "<init>", spongeSignature, false); mv.visitInsn(DUP); mv.visitVarInsn(ASTORE, 2); mv.visitMethodInsn(INVOKESTATIC, EVENT_WRAPPER_CLASS, "set", SET_CACHE, false); mv.visitLabel(l0); mv.visitFrame(F_APPEND, 1, new Object[] { poreName }, 0, null); mv.visitVarInsn(ALOAD, 2); mv.visitFieldInsn(GETSTATIC, PRIORITY_CLASS, priority.name(), PRIORITY_DESCRIPTOR); mv.visitMethodInsn(INVOKESTATIC, EVENT_WRAPPER_CLASS, "call", CALL_EVENT, false); mv.visitInsn(RETURN); mv.visitMaxs(4, 3); mv.visitEnd(); } cw.visitEnd(); return cw.toByteArray(); }
From source file:bluejelly.PrimTransformer.java
License:BSD License
private void generate(PrimInfo pi) { for (int i = 0; i < pi.arity; i++) { Label start = new Label(); Label end = new Label(); String method = getMethodName(pi, i); String cont = getContName(pi, i); MethodVisitor v = cv.visitMethod(ACC_PUBLIC, method, DESC, null, null); generateAnn(v, pi, i);//from w w w . ja va 2 s. c om v.visitCode(); v.visitLabel(start); if (i == 0) { v.visitIntInsn(ALOAD, 1); pushIntConst(v, pi.arity); v.visitMethodInsn(INVOKEVIRTUAL, CTX, "stackCheck", "(I)V"); } v.visitIntInsn(ALOAD, 1); pushIntConst(v, i << 1); v.visitLdcInsn(cont); v.visitMethodInsn(INVOKEVIRTUAL, CTX, "evalVar", "(ILjava/lang/String;)V"); v.visitLabel(end); v.visitInsn(RETURN); v.visitLocalVariable("ctx", Type.getDescriptor(ExecutionContext.class), null, start, end, 1); v.visitMaxs(3, 2); v.visitEnd(); } }
From source file:bluejelly.runtime.ModuleLoader.java
License:BSD License
/** * Generate a {@link Caf} subclass for the given method information. * /*w w w.java2s .co m*/ * @param module module declaring the method to process * @param ci code info for the method to process * * @return * a {@link Caf} subclass whose <code>fastEnter</code> will call * module.ci.getMethod() with an {@link ExecutionContext} as argument. */ @SuppressWarnings("unchecked") private Class<Caf> generateCaf(Module module, CodeInfo ci) { String nodeName = this.genNodeName(ci); String cafName = Type.getInternalName(Caf.class); String moduleName = Type.getInternalName(module.getClass()); String methodName = ci.getMethod().getName(); ClassWriter cw = new ClassWriter(0); cw.visit(V1_6, ACC_PUBLIC + ACC_FINAL, nodeName, null, cafName, null); { String consDesc = Type.getMethodDescriptor(Type.VOID_TYPE, new Type[] { Type.getType(Module.class), Type.getType(String.class) }); MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "<init>", consDesc, null, null); mv.visitCode(); mv.visitVarInsn(ALOAD, 0); mv.visitVarInsn(ALOAD, 1); mv.visitVarInsn(ALOAD, 2); mv.visitMethodInsn(INVOKESPECIAL, cafName, "<init>", consDesc); mv.visitInsn(RETURN); mv.visitMaxs(3, 3); mv.visitEnd(); } this.generateFastEnter(cw, cafName, moduleName, methodName); cw.visitEnd(); byte[] b = cw.toByteArray(); Class<?> clazz = this.loader.defineClass(nodeName, b); return (Class<Caf>) clazz; }
From source file:bluejelly.runtime.ModuleLoader.java
License:BSD License
/** * Generate a {@link Code} subclass for the given method information. * /* w w w.j a v a 2 s .co m*/ * @param module module declaring the method to process * @param ci code info for the method to process * * @return * a {@link Code} subclass whose <code>fastEnter</code> will call * module.ci.getMethod() with an {@link ExecutionContext} as argument. */ @SuppressWarnings("unchecked") private Class<Code> generateCode(Module module, CodeInfo ci) { String nodeName = this.genNodeName(ci); String codeName = Type.getInternalName(Code.class); String moduleName = Type.getInternalName(module.getClass()); String methodName = ci.getMethod().getName(); ClassWriter cw = new ClassWriter(0); cw.visit(V1_6, ACC_PUBLIC + ACC_FINAL, nodeName, null, codeName, null); { String consDesc = Type.getMethodDescriptor(Type.VOID_TYPE, new Type[] { Type.getType(int.class), Type.getType(Module.class), Type.getType(String.class) }); MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "<init>", consDesc, null, null); mv.visitCode(); mv.visitVarInsn(ALOAD, 0); mv.visitVarInsn(ILOAD, 1); mv.visitVarInsn(ALOAD, 2); mv.visitVarInsn(ALOAD, 3); mv.visitMethodInsn(INVOKESPECIAL, codeName, "<init>", consDesc); mv.visitInsn(RETURN); mv.visitMaxs(4, 4); mv.visitEnd(); } this.generateFastEnter(cw, codeName, moduleName, methodName); cw.visitEnd(); byte[] b = cw.toByteArray(); Class<?> clazz = this.loader.defineClass(nodeName, b); return (Class<Code>) clazz; }
From source file:bluejelly.runtime.ModuleLoader.java
License:BSD License
/** * Override <code>fastEnter</code> method in class being visited * by <code>cw</code>, subclass of <code>superName</code>. Method * will call <code>methodName</code>. declared in class * <code>moduleName</code>. So , assuming class generated by * <code>cw</code> is named <code>X</code>, we will have: * /* w ww. j ava 2 s . co m*/ * <p> * <code> * class X extends superName { * public void fastEnter(ExecutionContext ctx) { * ((moduleName)this.module).methodName(ctx); * } * } * </code> * * @param cw class writer generating class code * @param superName internal name of superclass: Code or Caf * @param moduleName internal name of module class * @param methodName name of method to invoke in module moduleName */ private void generateFastEnter(ClassWriter cw, String superName, String moduleName, String methodName) { String fieldDesc = Type.getDescriptor(Module.class); String methodDesc = "(" + Type.getDescriptor(ExecutionContext.class) + ")V"; MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "fastEnter", methodDesc, null, null); mv.visitCode(); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, superName, "module", fieldDesc); mv.visitTypeInsn(CHECKCAST, moduleName); mv.visitVarInsn(ALOAD, 1); mv.visitMethodInsn(INVOKEVIRTUAL, moduleName, methodName, methodDesc); mv.visitInsn(RETURN); mv.visitMaxs(2, 2); mv.visitEnd(); }
From source file:blusunrize.immersiveengineering.common.util.compat.jei.arcfurnace.ArcFurnaceRecipeWrapper.java
private static Class<? extends ArcFurnaceRecipeWrapper> createSubWrapper(String subtype) throws Exception { String entitySuperClassName = Type.getInternalName(ArcFurnaceRecipeWrapper.class); String entityProxySubClassName = ArcFurnaceRecipeWrapper.class.getSimpleName().concat(subtype); ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS); cw.visit(Opcodes.V1_6, Opcodes.ACC_PUBLIC + Opcodes.ACC_SUPER, entityProxySubClassName, null, entitySuperClassName, null); cw.visitSource(entityProxySubClassName.concat(".java"), null); //create constructor String methodDescriptor = "(L" + Type.getInternalName(ArcFurnaceRecipe.class) + ";)V"; MethodVisitor mv = cw.visitMethod(Opcodes.ACC_PUBLIC, "<init>", methodDescriptor, null, null); mv.visitCode();//from w ww . java 2 s . c o m mv.visitVarInsn(Opcodes.ALOAD, 0); mv.visitVarInsn(Opcodes.ALOAD, 1); mv.visitMethodInsn(Opcodes.INVOKESPECIAL, entitySuperClassName, "<init>", methodDescriptor, false); mv.visitInsn(Opcodes.RETURN); mv.visitMaxs(0, 0); mv.visitEnd(); cw.visitEnd(); return (Class<? extends ArcFurnaceRecipeWrapper>) new ProxyClassLoader( Thread.currentThread().getContextClassLoader(), cw.toByteArray()) .loadClass(entityProxySubClassName.replaceAll("/", ".")); }
From source file:boilerplate.processor.adapters.EqualsAdapter.java
License:Open Source License
private void addEqualsMethod(List<FieldInfo> fields) { // CODE: public boolean equals(Object obj) { MethodVisitor mv = cv.visitMethod(ACC_PUBLIC, "equals", "(Ljava/lang/Object;)Z", null, null); mv.visitCode();//from w w w . j a v a 2 s. co m // CODE: if (this == obj) return true; mv.visitVarInsn(ALOAD, 0); mv.visitVarInsn(ALOAD, 1); Label l0 = new Label(); mv.visitJumpInsn(IF_ACMPNE, l0); mv.visitInsn(ICONST_1); mv.visitInsn(IRETURN); mv.visitLabel(l0); mv.visitFrame(F_SAME, 0, null, 0, null); // CODE: if (!(obj instanceof Foo)) return false; mv.visitVarInsn(ALOAD, 1); mv.visitTypeInsn(INSTANCEOF, typeInfo.type); Label l1 = new Label(); mv.visitJumpInsn(IFNE, l1); mv.visitInsn(ICONST_0); mv.visitInsn(IRETURN); mv.visitLabel(l1); mv.visitFrame(F_SAME, 0, null, 0, null); // CODE: final Foo other = (Foo) obj; mv.visitVarInsn(ALOAD, 1); mv.visitTypeInsn(CHECKCAST, typeInfo.type); mv.visitVarInsn(ASTORE, 2); for (FieldInfo info : fields) { addTest(mv, info); } // CODE: return true; } mv.visitInsn(ICONST_1); mv.visitInsn(IRETURN); mv.visitMaxs(1, 2); mv.visitEnd(); }
From source file:boilerplate.processor.adapters.EqualsAdapter.java
License:Open Source License
private void addHashCodeMethod(List<FieldInfo> fields) { // CODE: public int hashCode() { MethodVisitor mv = cv.visitMethod(ACC_PUBLIC, "hashCode", "()I", null, null); mv.visitCode();/*from w ww . j a v a 2s . co m*/ // CODE: final int prime = 31; mv.visitIntInsn(BIPUSH, 31); mv.visitVarInsn(ISTORE, 1); mv.visitInsn(ICONST_1); // CODE: int result = 1; mv.visitVarInsn(ISTORE, 2); for (FieldInfo fieldInfo : fields) { addCalculation(mv, fieldInfo); } // CODE: return result; } mv.visitVarInsn(ILOAD, 2); mv.visitInsn(IRETURN); mv.visitMaxs(1, 3); mv.visitEnd(); }