List of usage examples for org.objectweb.asm MethodVisitor visitJumpInsn
public void visitJumpInsn(final int opcode, final Label label)
From source file:com.googlecode.d2j.converter.IR2JConverter.java
License:Apache License
private void reBuildJumpInstructions(IfStmt st, MethodVisitor asm) { Label target = (Label) st.target.tag; Value v = st.op;// ww w . j a v a 2 s . c o m Value v1 = v.getOp1(); Value v2 = v.getOp2(); String type = v1.valueType; switch (type.charAt(0)) { case '[': case 'L': // IF_ACMPx // IF[non]null if (isZeroOrNull(v1) || isZeroOrNull(v2)) { // IF[non]null if (isZeroOrNull(v2)) {// v2 is null accept(v1, asm); } else { accept(v2, asm); } asm.visitJumpInsn(v.vt == VT.EQ ? IFNULL : IFNONNULL, target); } else { accept(v1, asm); accept(v2, asm); asm.visitJumpInsn(v.vt == VT.EQ ? IF_ACMPEQ : IF_ACMPNE, target); } break; default: // IFx // IF_ICMPx if (isZeroOrNull(v1) || isZeroOrNull(v2)) { // IFx if (isZeroOrNull(v2)) {// v2 is zero accept(v1, asm); } else { accept(v2, asm); } switch (v.vt) { case NE: asm.visitJumpInsn(IFNE, target); break; case EQ: asm.visitJumpInsn(IFEQ, target); break; case GE: asm.visitJumpInsn(IFGE, target); break; case GT: asm.visitJumpInsn(IFGT, target); break; case LE: asm.visitJumpInsn(IFLE, target); break; case LT: asm.visitJumpInsn(IFLT, target); break; } } else { // IF_ICMPx accept(v1, asm); accept(v2, asm); switch (v.vt) { case NE: asm.visitJumpInsn(IF_ICMPNE, target); break; case EQ: asm.visitJumpInsn(IF_ICMPEQ, target); break; case GE: asm.visitJumpInsn(IF_ICMPGE, target); break; case GT: asm.visitJumpInsn(IF_ICMPGT, target); break; case LE: asm.visitJumpInsn(IF_ICMPLE, target); break; case LT: asm.visitJumpInsn(IF_ICMPLT, target); break; } } break; } }
From source file:com.googlecode.ddom.weaver.asm.MethodVisitorTee.java
License:Apache License
public void visitJumpInsn(int opcode, Label label) { for (MethodVisitor visitor : visitors) { visitor.visitJumpInsn(opcode, label); }/*www.j a va2 s . co m*/ }
From source file:com.googlecode.ddom.weaver.ext.ModelExtensionFactoryImplementation.java
License:Apache License
public void accept(ClassVisitor classVisitor) { // Note: the name chosen here must match what is expected in ExtensionFactoryLocator String name = Util.classNameToInternalName(implementationInfo.getFactoryInterface().getName() + "$$Impl"); String factoryInterfaceName = Util .classNameToInternalName(implementationInfo.getFactoryInterface().getName()); classVisitor.visit(Opcodes.V1_5, Opcodes.ACC_PUBLIC, name, null, "java/lang/Object", new String[] { factoryInterfaceName }); {/*w w w .j av a 2s . c o m*/ FieldVisitor fw = classVisitor.visitField(Opcodes.ACC_PUBLIC | Opcodes.ACC_FINAL | Opcodes.ACC_STATIC, "INSTANCE", "L" + factoryInterfaceName + ";", null, null); if (fw != null) { fw.visitEnd(); } } { FieldVisitor fw = classVisitor.visitField(Opcodes.ACC_PRIVATE | Opcodes.ACC_FINAL, "delegates", "Ljava/util/Map;", null, null); if (fw != null) { fw.visitEnd(); } } { MethodVisitor mv = classVisitor.visitMethod(Opcodes.ACC_PRIVATE, "<init>", "()V", null, null); if (mv != null) { mv.visitCode(); Label l0 = new Label(); mv.visitLabel(l0); // Call constructor from superclass mv.visitVarInsn(Opcodes.ALOAD, 0); mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/lang/Object", "<init>", "()V"); // Create delegates map mv.visitVarInsn(Opcodes.ALOAD, 0); mv.visitTypeInsn(Opcodes.NEW, "java/util/HashMap"); mv.visitInsn(Opcodes.DUP); mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/util/HashMap", "<init>", "()V"); mv.visitFieldInsn(Opcodes.PUTFIELD, name, "delegates", "Ljava/util/Map;"); // Populate delegates map for (ModelExtensionInfo modelExtensionInfo : implementationInfo.getModelExtensions()) { for (ModelExtensionInterfaceInfo extensionInterface : modelExtensionInfo .getExtensionInterfaces()) { if (!extensionInterface.isAbstract()) { // TODO: this is stupid; we should not recreate the info object here ModelExtensionClassInfo modelExtensionClassInfo = new ModelExtensionClassInfo( implementationInfo.getImplementation(), modelExtensionInfo.getRootInterface(), extensionInterface); String factoryDelegateImplName = Util.classNameToInternalName( modelExtensionClassInfo.getFactoryDelegateImplementationClassName()); mv.visitVarInsn(Opcodes.ALOAD, 0); mv.visitFieldInsn(Opcodes.GETFIELD, name, "delegates", "Ljava/util/Map;"); mv.visitLdcInsn(Type.getObjectType(Util.classNameToInternalName( modelExtensionClassInfo.getExtensionInterface().getClassInfo().getName()))); mv.visitTypeInsn(Opcodes.NEW, factoryDelegateImplName); mv.visitInsn(Opcodes.DUP); mv.visitMethodInsn(Opcodes.INVOKESPECIAL, factoryDelegateImplName, "<init>", "()V"); mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, "java/util/Map", "put", "(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;"); mv.visitInsn(Opcodes.POP); } } } mv.visitInsn(Opcodes.RETURN); Label l1 = new Label(); mv.visitLabel(l1); mv.visitLocalVariable("this", "L" + name + ";", null, l0, l1, 0); mv.visitMaxs(4, 1); mv.visitEnd(); } } String factoryDelegateInterfaceName = Util .classNameToInternalName(implementationInfo.getFactoryDelegateInterfaceName()); String getDelegateDesc = "(Ljava/lang/Class;)L" + factoryDelegateInterfaceName + ";"; { MethodVisitor mv = classVisitor.visitMethod(Opcodes.ACC_PRIVATE, "getDelegate", getDelegateDesc, null, null); if (mv != null) { mv.visitCode(); Label l0 = new Label(); mv.visitLabel(l0); mv.visitVarInsn(Opcodes.ALOAD, 0); mv.visitFieldInsn(Opcodes.GETFIELD, name, "delegates", "Ljava/util/Map;"); mv.visitVarInsn(Opcodes.ALOAD, 1); mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, "java/util/Map", "get", "(Ljava/lang/Object;)Ljava/lang/Object;"); mv.visitTypeInsn(Opcodes.CHECKCAST, factoryDelegateInterfaceName); mv.visitInsn(Opcodes.ARETURN); Label l1 = new Label(); mv.visitLabel(l1); mv.visitLocalVariable("this", "L" + name + ";", null, l0, l1, 0); mv.visitLocalVariable("extensionInterface", "Ljava/lang/Class;", null, l0, l1, 1); mv.visitMaxs(2, 2); mv.visitEnd(); } } String implementationName = Util.classNameToInternalName(implementationInfo.getImplementation().getName()); for (ConstructorInfo constructor : implementationInfo.getConstructors()) { Type[] constructorArgumentTypes = constructor.getArgumentTypes(); Type[] argumentTypes = new Type[constructorArgumentTypes.length + 1]; argumentTypes[0] = Type.getObjectType("java/lang/Class"); System.arraycopy(constructorArgumentTypes, 0, argumentTypes, 1, constructorArgumentTypes.length); MethodVisitor mv = classVisitor.visitMethod(Opcodes.ACC_PUBLIC, "create", Type.getMethodDescriptor(Type.getObjectType(implementationName), argumentTypes), null, null); if (mv != null) { mv.visitCode(); Label l0 = new Label(); mv.visitLabel(l0); mv.visitVarInsn(Opcodes.ALOAD, 1); Label l1 = new Label(); mv.visitJumpInsn(Opcodes.IFNONNULL, l1); mv.visitTypeInsn(Opcodes.NEW, implementationName); mv.visitInsn(Opcodes.DUP); for (int i = 0; i < constructorArgumentTypes.length; i++) { mv.visitVarInsn(constructorArgumentTypes[i].getOpcode(Opcodes.ILOAD), i + 2); } mv.visitMethodInsn(Opcodes.INVOKESPECIAL, implementationName, "<init>", constructor.getDescriptor()); mv.visitInsn(Opcodes.ARETURN); mv.visitLabel(l1); mv.visitVarInsn(Opcodes.ALOAD, 0); mv.visitVarInsn(Opcodes.ALOAD, 1); mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, name, "getDelegate", getDelegateDesc); for (int i = 0; i < constructorArgumentTypes.length; i++) { mv.visitVarInsn(constructorArgumentTypes[i].getOpcode(Opcodes.ILOAD), i + 2); } mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, factoryDelegateInterfaceName, "create", constructor.getFactoryDelegateMethodDescriptor()); mv.visitInsn(Opcodes.ARETURN); Label l3 = new Label(); mv.visitLabel(l3); mv.visitLocalVariable("this", "L" + name + ";", null, l0, l3, 0); mv.visitLocalVariable("extensionInterface", "Ljava/lang/Class;", null, l0, l3, 1); for (int i = 0; i < constructorArgumentTypes.length; i++) { mv.visitLocalVariable("arg" + i, constructorArgumentTypes[i].getDescriptor(), null, l0, l3, i + 2); } mv.visitMaxs(argumentTypes.length + 1, argumentTypes.length + 1); mv.visitEnd(); } } { MethodVisitor mv = classVisitor.visitMethod(Opcodes.ACC_STATIC, "<clinit>", "()V", null, null); if (mv != null) { mv.visitCode(); mv.visitTypeInsn(Opcodes.NEW, name); mv.visitInsn(Opcodes.DUP); mv.visitMethodInsn(Opcodes.INVOKESPECIAL, name, "<init>", "()V"); mv.visitFieldInsn(Opcodes.PUTSTATIC, name, "INSTANCE", "L" + factoryInterfaceName + ";"); mv.visitInsn(Opcodes.RETURN); mv.visitMaxs(2, 0); mv.visitEnd(); } } classVisitor.visitEnd(); }
From source file:com.ibm.layout.GenArray1D.java
License:Open Source License
/** * Generate bytecodes for runtime class//from w w w. j a va 2 s . c o m * * @return byte array containing bytecodes for runtime class * @throws Exception */ public byte[] genBytecode() throws Exception { ClassWriter cw = new ClassWriter(0); MethodVisitor mv; FieldVisitor fv; final boolean itf = false; /* If user-defined array class is supplied, use it as superclass, and use its name instead of generating it */ cw.visit(V1_8, ACC_FINAL + ACC_SUPER, arrayImplClassName, arrayInterfaceClassSig, "java/lang/Object", new String[] { arrayInterfaceClassName }); { fv = cw.visitField(ACC_PROTECTED + ACC_FINAL, "elementSize", "J", null, null); fv.visitEnd(); } { fv = cw.visitField(ACC_PRIVATE + ACC_FINAL, "arraySize", "J", null, null); fv.visitEnd(); } { fv = cw.visitField(ACC_PROTECTED + ACC_FINAL, "length", "J", null, null); fv.visitEnd(); } { mv = cw.visitMethod(ACC_PROTECTED, "<init>", "(JJ)V", null, null); mv.visitCode(); mv.visitVarInsn(ALOAD, 0); mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false); mv.visitVarInsn(ALOAD, 0); mv.visitVarInsn(LLOAD, 1); mv.visitFieldInsn(PUTFIELD, arrayImplClassName, "length", "J"); mv.visitVarInsn(ALOAD, 0); mv.visitVarInsn(LLOAD, 3); mv.visitFieldInsn(PUTFIELD, arrayImplClassName, "elementSize", "J"); mv.visitVarInsn(ALOAD, 0); mv.visitVarInsn(LLOAD, 1); mv.visitVarInsn(LLOAD, 3); mv.visitInsn(LMUL); mv.visitFieldInsn(PUTFIELD, arrayImplClassName, "arraySize", "J"); mv.visitInsn(RETURN); mv.visitMaxs(5, 5); mv.visitEnd(); } { mv = cw.visitMethod(ACC_PUBLIC, "sizeof", "()J", null, null); mv.visitCode(); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, arrayImplClassName, "arraySize", "J"); mv.visitInsn(LRETURN); mv.visitMaxs(2, 1); mv.visitEnd(); } { mv = cw.visitMethod(ACC_PUBLIC, "toString", "()Ljava/lang/String;", null, null); mv.visitCode(); mv.visitTypeInsn(NEW, "java/lang/StringBuffer"); mv.visitInsn(DUP); mv.visitLdcInsn("["); mv.visitMethodInsn(INVOKESPECIAL, "java/lang/StringBuffer", "<init>", "(Ljava/lang/String;)V", false); mv.visitVarInsn(ASTORE, 1); mv.visitInsn(LCONST_0); mv.visitVarInsn(LSTORE, 2); Label l0 = new Label(); mv.visitJumpInsn(GOTO, l0); Label l1 = new Label(); mv.visitLabel(l1); mv.visitFrame(Opcodes.F_APPEND, 2, new Object[] { "java/lang/StringBuffer", Opcodes.LONG }, 0, null); mv.visitVarInsn(ALOAD, 1); mv.visitTypeInsn(NEW, "java/lang/StringBuilder"); mv.visitInsn(DUP); mv.visitLdcInsn(" "); mv.visitMethodInsn(INVOKESPECIAL, "java/lang/StringBuilder", "<init>", "(Ljava/lang/String;)V", false); mv.visitVarInsn(ALOAD, 0); mv.visitVarInsn(LLOAD, 2); mv.visitMethodInsn(INVOKEVIRTUAL, arrayImplClassName, "at", "(J)L" + elementInterfaceClassName + ";", false); mv.visitMethodInsn(INVOKEINTERFACE, elementInterfaceClassName, "toString", "()Ljava/lang/String;", true); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "toString", "()Ljava/lang/String;", false); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuffer", "append", "(Ljava/lang/String;)Ljava/lang/StringBuffer;", false); mv.visitInsn(POP); mv.visitVarInsn(LLOAD, 2); mv.visitInsn(LCONST_1); mv.visitInsn(LADD); mv.visitVarInsn(LSTORE, 2); mv.visitLabel(l0); mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null); mv.visitVarInsn(LLOAD, 2); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, arrayImplClassName, "length", "J"); mv.visitInsn(LCMP); mv.visitJumpInsn(IFLT, l1); mv.visitVarInsn(ALOAD, 1); mv.visitLdcInsn(" ]"); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuffer", "append", "(Ljava/lang/String;)Ljava/lang/StringBuffer;", false); mv.visitInsn(POP); mv.visitVarInsn(ALOAD, 1); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuffer", "toString", "()Ljava/lang/String;", false); mv.visitInsn(ARETURN); mv.visitMaxs(5, 4); mv.visitEnd(); } { mv = cw.visitMethod(ACC_PUBLIC + ACC_STATIC, "getComponentType", "()Ljava/lang/Class;", "()Ljava/lang/Class<*>;", null); mv.visitCode(); mv.visitLdcInsn(Type.getType("L" + elementInterfaceClassName + ";")); mv.visitInsn(ARETURN); mv.visitMaxs(1, 0); mv.visitEnd(); } { mv = cw.visitMethod(ACC_PUBLIC + ACC_FINAL, "getLength", "()J", null, null); mv.visitCode(); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, arrayImplClassName, "length", "J"); mv.visitInsn(LRETURN); mv.visitMaxs(2, 1); mv.visitEnd(); } { mv = cw.visitMethod(ACC_PUBLIC, "at", "(J)L" + elementInterfaceClassName + ";", null, null); mv.visitCode(); mv.visitTypeInsn(NEW, elementImplClassName); mv.visitInsn(DUP); mv.visitMethodInsn(INVOKESPECIAL, elementImplClassName, "<init>", "()V", itf); mv.visitVarInsn(ASTORE, 3); mv.visitTypeInsn(NEW, "com/ibm/layout/Location"); mv.visitInsn(DUP); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, this.arrayImplClassName, "location", "Lcom/ibm/layout/Location;"); mv.visitVarInsn(LLOAD, 1); mv.visitVarInsn(ALOAD, 3); mv.visitMethodInsn(INVOKEVIRTUAL, elementImplClassName, "sizeof", "()J", itf); mv.visitInsn(LMUL); mv.visitMethodInsn(INVOKESPECIAL, "com/ibm/layout/Location", "<init>", "(Lcom/ibm/layout/Location;J)V", itf); mv.visitVarInsn(ASTORE, 4); mv.visitVarInsn(ALOAD, 3); mv.visitVarInsn(ALOAD, 4); mv.visitMethodInsn(INVOKEVIRTUAL, elementImplClassName, "bindLocation", "(Lcom/ibm/layout/Location;)V", itf); mv.visitVarInsn(ALOAD, 3); mv.visitInsn(ARETURN); mv.visitMaxs(7, 5); mv.visitEnd(); } { mv = cw.visitMethod(ACC_PUBLIC, "range", "(JJ)Lcom/ibm/layout/Array1D;", "(JJ)Lcom/ibm/layout/Array1D<" + elementInterfaceClassName + ";>;", null); mv.visitCode(); mv.visitTypeInsn(NEW, arrayImplClassName); mv.visitInsn(DUP); mv.visitVarInsn(LLOAD, 3); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, this.arrayImplClassName, "elementSize", "J"); mv.visitMethodInsn(INVOKESPECIAL, this.arrayImplClassName, "<init>", "(JJ)V", itf); mv.visitVarInsn(ASTORE, 5); mv.visitTypeInsn(NEW, "com/ibm/layout/Location"); mv.visitInsn(DUP); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, arrayImplClassName, "location", "Lcom/ibm/layout/Location;"); mv.visitVarInsn(LLOAD, 1); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, arrayImplClassName, "elementSize", "J"); mv.visitInsn(LMUL); mv.visitMethodInsn(INVOKESPECIAL, "com/ibm/layout/Location", "<init>", "(Lcom/ibm/layout/Location;J)V", itf); mv.visitVarInsn(ASTORE, 6); mv.visitVarInsn(ALOAD, 5); mv.visitVarInsn(ALOAD, 6); mv.visitMethodInsn(INVOKEVIRTUAL, arrayImplClassName, "bindLocation", "(Lcom/ibm/layout/Location;)V", itf); mv.visitVarInsn(ALOAD, 5); mv.visitInsn(ARETURN); mv.visitMaxs(7, 7); mv.visitEnd(); } { mv = cw.visitMethod(ACC_PUBLIC, "put", "(JL" + elementInterfaceClassName + ";)V", null, null); mv.visitCode(); mv.visitVarInsn(ALOAD, 0); mv.visitVarInsn(LLOAD, 1); mv.visitMethodInsn(INVOKEVIRTUAL, arrayImplClassName, "at", "(J)L" + elementInterfaceClassName + ";", itf); mv.visitTypeInsn(CHECKCAST, elementImplClassName); mv.visitVarInsn(ALOAD, 3); mv.visitTypeInsn(CHECKCAST, elementImplClassName); mv.visitMethodInsn(INVOKEVIRTUAL, elementImplClassName, "copyFrom", "(L" + elementImplClassName + ";)V", itf); mv.visitInsn(RETURN); mv.visitMaxs(3, 4); mv.visitEnd(); } { mv = cw.visitMethod(ACC_PUBLIC + ACC_BRIDGE + ACC_SYNTHETIC, "at", "(J)Lcom/ibm/layout/Layout;", null, null); mv.visitCode(); mv.visitVarInsn(ALOAD, 0); mv.visitVarInsn(LLOAD, 1); mv.visitMethodInsn(INVOKEVIRTUAL, arrayImplClassName, "at", "(J)L" + elementInterfaceClassName + ";", itf); mv.visitInsn(ARETURN); mv.visitMaxs(3, 3); mv.visitEnd(); } { mv = cw.visitMethod(ACC_PUBLIC + ACC_BRIDGE + ACC_SYNTHETIC, "put", "(JLcom/ibm/layout/Layout;)V", null, null); mv.visitCode(); mv.visitVarInsn(ALOAD, 0); mv.visitVarInsn(LLOAD, 1); mv.visitVarInsn(ALOAD, 3); mv.visitTypeInsn(CHECKCAST, elementInterfaceClassName); mv.visitMethodInsn(INVOKEVIRTUAL, arrayImplClassName, "put", "(JL" + elementInterfaceClassName + ";)V", itf); mv.visitInsn(RETURN); mv.visitMaxs(4, 4); mv.visitEnd(); } ImplHelper.genLayoutTypeImpl(cw, mv, fv, arrayImplClassName, false); cw.visitEnd(); return cw.toByteArray(); }
From source file:com.ibm.layout.GenArray2D.java
License:Open Source License
/** * Generate bytecodes for runtime class// www. ja v a2 s . com * * @return byte array containing bytecodes for runtime class * @throws Exception */ public byte[] genBytecode() throws Exception { ClassWriter cw = new ClassWriter(0); MethodVisitor mv = null; FieldVisitor fv = null; final boolean itf = false; cw.visit(V1_8, ACC_FINAL + ACC_SUPER, arrayImplClassName, arrayInterfaceClassSig, "java/lang/Object", new String[] { arrayInterfaceClassName }); { fv = cw.visitField(ACC_PROTECTED + ACC_FINAL, "dim1", "J", null, null); fv.visitEnd(); } { fv = cw.visitField(ACC_PROTECTED + ACC_FINAL, "dim2", "J", null, null); fv.visitEnd(); } { fv = cw.visitField(ACC_PRIVATE + ACC_FINAL, "elementSize", "J", null, null); fv.visitEnd(); } { fv = cw.visitField(ACC_PRIVATE + ACC_FINAL, "arraySize", "J", null, null); fv.visitEnd(); } { mv = cw.visitMethod(ACC_PROTECTED, "<init>", "(JJJ)V", null, null); mv.visitCode(); mv.visitVarInsn(ALOAD, 0); mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false); mv.visitVarInsn(ALOAD, 0); mv.visitVarInsn(LLOAD, 1); mv.visitFieldInsn(PUTFIELD, arrayImplClassName, "dim1", "J"); mv.visitVarInsn(ALOAD, 0); mv.visitVarInsn(LLOAD, 3); mv.visitFieldInsn(PUTFIELD, arrayImplClassName, "dim2", "J"); mv.visitVarInsn(ALOAD, 0); mv.visitVarInsn(LLOAD, 5); mv.visitFieldInsn(PUTFIELD, arrayImplClassName, "elementSize", "J"); mv.visitVarInsn(ALOAD, 0); mv.visitVarInsn(LLOAD, 5); mv.visitVarInsn(LLOAD, 1); mv.visitInsn(LMUL); mv.visitVarInsn(LLOAD, 3); mv.visitInsn(LMUL); mv.visitFieldInsn(PUTFIELD, arrayImplClassName, "arraySize", "J"); mv.visitInsn(RETURN); mv.visitMaxs(5, 7); mv.visitEnd(); } { mv = cw.visitMethod(ACC_PUBLIC, "at", "(JJ)L" + elementInterfaceClassName + ";", null, null); mv.visitCode(); mv.visitTypeInsn(NEW, elementImplClassName); mv.visitInsn(DUP); mv.visitMethodInsn(INVOKESPECIAL, elementImplClassName, "<init>", "()V", itf); mv.visitVarInsn(ASTORE, 5); mv.visitTypeInsn(NEW, "com/ibm/layout/Location"); mv.visitInsn(DUP); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, arrayImplClassName, "location", "Lcom/ibm/layout/Location;"); mv.visitVarInsn(LLOAD, 1); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, arrayImplClassName, "dim2", "J"); mv.visitInsn(LMUL); mv.visitVarInsn(LLOAD, 3); mv.visitInsn(LADD); mv.visitVarInsn(ALOAD, 5); mv.visitMethodInsn(INVOKEVIRTUAL, elementImplClassName, "sizeof", "()J", itf); mv.visitInsn(LMUL); mv.visitMethodInsn(INVOKESPECIAL, "com/ibm/layout/Location", "<init>", "(Lcom/ibm/layout/Location;J)V", itf); mv.visitVarInsn(ASTORE, 6); mv.visitVarInsn(ALOAD, 5); mv.visitVarInsn(ALOAD, 6); mv.visitMethodInsn(INVOKEVIRTUAL, elementImplClassName, "bindLocation", "(Lcom/ibm/layout/Location;)V", itf); mv.visitVarInsn(ALOAD, 5); mv.visitInsn(ARETURN); mv.visitMaxs(7, 7); mv.visitEnd(); } { mv = cw.visitMethod(ACC_PUBLIC, "put", "(JJL" + elementInterfaceClassName + ";)V", null, null); mv.visitCode(); mv.visitVarInsn(ALOAD, 0); mv.visitVarInsn(LLOAD, 1); mv.visitVarInsn(LLOAD, 3); mv.visitMethodInsn(INVOKEVIRTUAL, arrayImplClassName, "at", "(JJ)L" + elementInterfaceClassName + ";", itf); mv.visitTypeInsn(CHECKCAST, elementImplClassName); mv.visitVarInsn(ALOAD, 5); mv.visitTypeInsn(CHECKCAST, elementImplClassName); mv.visitMethodInsn(INVOKEVIRTUAL, elementImplClassName, "copyFrom", "(L" + elementImplClassName + ";)V", itf); mv.visitInsn(RETURN); mv.visitMaxs(5, 6); mv.visitEnd(); } { mv = cw.visitMethod(ACC_PUBLIC + ACC_BRIDGE + ACC_SYNTHETIC, "at", "(JJ)Lcom/ibm/layout/Layout;", null, null); mv.visitCode(); mv.visitVarInsn(ALOAD, 0); mv.visitVarInsn(LLOAD, 1); mv.visitVarInsn(LLOAD, 3); mv.visitMethodInsn(INVOKEVIRTUAL, arrayImplClassName, "at", "(JJ)L" + elementInterfaceClassName + ";", itf); mv.visitInsn(ARETURN); mv.visitMaxs(5, 5); mv.visitEnd(); } { mv = cw.visitMethod(ACC_PUBLIC + ACC_BRIDGE + ACC_SYNTHETIC, "put", "(JJLcom/ibm/layout/Layout;)V", null, null); mv.visitCode(); mv.visitVarInsn(ALOAD, 0); mv.visitVarInsn(LLOAD, 1); mv.visitVarInsn(LLOAD, 3); mv.visitVarInsn(ALOAD, 5); mv.visitTypeInsn(CHECKCAST, elementInterfaceClassName); mv.visitMethodInsn(INVOKEVIRTUAL, arrayImplClassName, "put", "(JJL" + elementInterfaceClassName + ";)V", itf); mv.visitInsn(RETURN); mv.visitMaxs(6, 6); mv.visitEnd(); } { mv = cw.visitMethod(ACC_PUBLIC + ACC_FINAL, "dim1", "()J", null, null); mv.visitCode(); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, arrayImplClassName, "dim1", "J"); mv.visitInsn(LRETURN); mv.visitMaxs(2, 1); mv.visitEnd(); } { mv = cw.visitMethod(ACC_PUBLIC + ACC_FINAL, "dim2", "()J", null, null); mv.visitCode(); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, arrayImplClassName, "dim2", "J"); mv.visitInsn(LRETURN); mv.visitMaxs(2, 1); mv.visitEnd(); } { mv = cw.visitMethod(ACC_PUBLIC, "sizeof", "()J", null, null); mv.visitCode(); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, arrayImplClassName, "arraySize", "J"); mv.visitInsn(LRETURN); mv.visitMaxs(2, 1); mv.visitEnd(); } { mv = cw.visitMethod(ACC_PUBLIC, "toString", "()Ljava/lang/String;", null, null); mv.visitCode(); mv.visitTypeInsn(NEW, "java/lang/StringBuffer"); mv.visitInsn(DUP); mv.visitLdcInsn("["); mv.visitMethodInsn(INVOKESPECIAL, "java/lang/StringBuffer", "<init>", "(Ljava/lang/String;)V", false); mv.visitVarInsn(ASTORE, 1); mv.visitInsn(LCONST_0); mv.visitVarInsn(LSTORE, 2); Label l0 = new Label(); mv.visitJumpInsn(GOTO, l0); Label l1 = new Label(); mv.visitLabel(l1); mv.visitFrame(Opcodes.F_APPEND, 2, new Object[] { "java/lang/StringBuffer", Opcodes.LONG }, 0, null); mv.visitInsn(LCONST_0); mv.visitVarInsn(LSTORE, 4); Label l2 = new Label(); mv.visitJumpInsn(GOTO, l2); Label l3 = new Label(); mv.visitLabel(l3); mv.visitFrame(Opcodes.F_APPEND, 1, new Object[] { Opcodes.LONG }, 0, null); mv.visitVarInsn(ALOAD, 1); mv.visitTypeInsn(NEW, "java/lang/StringBuilder"); mv.visitInsn(DUP); mv.visitLdcInsn(" "); mv.visitMethodInsn(INVOKESPECIAL, "java/lang/StringBuilder", "<init>", "(Ljava/lang/String;)V", false); mv.visitVarInsn(ALOAD, 0); mv.visitVarInsn(LLOAD, 2); mv.visitVarInsn(LLOAD, 4); mv.visitMethodInsn(INVOKEVIRTUAL, arrayImplClassName, "at", "(JJ)Lcom/ibm/layout/Layout;", false); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Object", "toString", "()Ljava/lang/String;", false); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "toString", "()Ljava/lang/String;", false); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuffer", "append", "(Ljava/lang/String;)Ljava/lang/StringBuffer;", false); mv.visitInsn(POP); mv.visitVarInsn(LLOAD, 4); mv.visitInsn(LCONST_1); mv.visitInsn(LADD); mv.visitVarInsn(LSTORE, 4); mv.visitLabel(l2); mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null); mv.visitVarInsn(LLOAD, 4); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, arrayImplClassName, "dim2", "J"); mv.visitInsn(LCMP); mv.visitJumpInsn(IFLT, l3); mv.visitVarInsn(LLOAD, 2); mv.visitInsn(LCONST_1); mv.visitInsn(LADD); mv.visitVarInsn(LSTORE, 2); mv.visitLabel(l0); mv.visitFrame(Opcodes.F_CHOP, 1, null, 0, null); mv.visitVarInsn(LLOAD, 2); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, arrayImplClassName, "dim1", "J"); mv.visitInsn(LCMP); mv.visitJumpInsn(IFLT, l1); mv.visitVarInsn(ALOAD, 1); mv.visitLdcInsn(" ]"); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuffer", "append", "(Ljava/lang/String;)Ljava/lang/StringBuffer;", false); mv.visitInsn(POP); mv.visitVarInsn(ALOAD, 1); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuffer", "toString", "()Ljava/lang/String;", false); mv.visitInsn(ARETURN); mv.visitMaxs(7, 6); mv.visitEnd(); } ImplHelper.genLayoutTypeImpl(cw, mv, fv, arrayImplClassName, false); cw.visitEnd(); return cw.toByteArray(); }
From source file:com.ibm.layout.GenLayout.java
License:Open Source License
/** * Generate bytecodes for runtime class//from www . jav a2 s . c o m * * @return byte array containing bytecodes for runtime class * @throws Exception */ public byte[] genBytecode() throws Exception { ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS); FieldVisitor fv = null; MethodVisitor mv = null; ImplHelper.FieldDesc[] fieldDesc = ImplHelper.getFieldDesc(clazz); boolean isVariableLengthLayout = false; final boolean itf = false; { mv = cw.visitMethod(ACC_PUBLIC, "sizeof", "()J", null, null); mv.visitCode(); mv.visitLdcInsn(new Long(getClassSize(fieldDesc))); mv.visitInsn(LRETURN); mv.visitMaxs(2, 1); mv.visitEnd(); } cw.visit(V1_8, ACC_FINAL + ACC_SUPER, implClassName, null, "java/lang/Object", new String[] { interfaceClassName }); { mv = cw.visitMethod(0, "<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(); } // getters for (int i = 0; i < fieldDesc.length; i++) { if (!ImplHelper.isPointerType(fieldDesc[i].rawType)) { if (ImplHelper.isTypePrimitive(fieldDesc[i].sig)) { mv = cw.visitMethod(ACC_PUBLIC, fieldDesc[i].name, "()" + fieldDesc[i].sig, null, null); mv.visitCode(); mv.visitFieldInsn(GETSTATIC, implClassName, "unsafe", "Lsun/misc/Unsafe;"); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, implClassName, "location", "Lcom/ibm/layout/Location;"); mv.visitMethodInsn(INVOKEVIRTUAL, "com/ibm/layout/Location", "getData", "()[B", itf); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, implClassName, "location", "Lcom/ibm/layout/Location;"); mv.visitMethodInsn(INVOKEVIRTUAL, "com/ibm/layout/Location", "getOffset", "()J", itf); mv.visitLdcInsn(fieldDesc[i].offset); mv.visitInsn(LADD); mv.visitMethodInsn(INVOKEVIRTUAL, "sun/misc/Unsafe", "get" + ImplHelper.fieldSig2MethodType(fieldDesc[i].sig), "(Ljava/lang/Object;J)" + fieldDesc[i].sig, itf); if (fieldDesc[i].sig == "D") { mv.visitInsn(DRETURN); } else if (fieldDesc[i].sig == "J") { mv.visitInsn(LRETURN); } else if (fieldDesc[i].sig == "F") { mv.visitInsn(FRETURN); } else { mv.visitInsn(IRETURN); } mv.visitMaxs(6, 1); mv.visitEnd(); } else if (fieldDesc[i].repeatCountMember != null) { { isVariableLengthLayout = true; ImplHelper.FieldDesc repeatCountField = ImplHelper.findField(fieldDesc[i].repeatCountMember, fieldDesc); mv = cw.visitMethod(ACC_PUBLIC, fieldDesc[i].name, "()" + fieldDesc[i].sig, "()" + fieldDesc[i].elementImpl, null); mv.visitCode(); if ("" != fieldDesc[i].elementImpl) { mv.visitTypeInsn(NEW, fieldDesc[i].elementImpl); mv.visitInsn(DUP); mv.visitMethodInsn(INVOKESPECIAL, fieldDesc[i].elementImpl, "<init>", "()V", false); mv.visitVarInsn(ASTORE, 1); mv.visitTypeInsn(NEW, fieldDesc[i].impl); mv.visitInsn(DUP); mv.visitVarInsn(ALOAD, 0); mv.visitMethodInsn(INVOKEVIRTUAL, implClassName, fieldDesc[i].repeatCountMember, "()" + repeatCountField.sig, false); if (!repeatCountField.sig.equals("J")) { mv.visitInsn(I2L); } mv.visitVarInsn(ALOAD, 1); mv.visitMethodInsn(INVOKEVIRTUAL, fieldDesc[i].elementImpl, "sizeof", "()J", false); mv.visitMethodInsn(INVOKESPECIAL, fieldDesc[i].impl, "<init>", "(JJ)V", false); mv.visitVarInsn(ASTORE, 2); mv.visitTypeInsn(NEW, "com/ibm/layout/Location"); mv.visitInsn(DUP); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, implClassName, "location", "Lcom/ibm/layout/Location;"); mv.visitLdcInsn(fieldDesc[i].offset); mv.visitMethodInsn(INVOKESPECIAL, "com/ibm/layout/Location", "<init>", "(Lcom/ibm/layout/Location;J)V", false); mv.visitVarInsn(ASTORE, 3); mv.visitVarInsn(ALOAD, 2); mv.visitVarInsn(ALOAD, 3); mv.visitMethodInsn(INVOKEINTERFACE, "com/ibm/layout/VLArray", "bindLocation", "(Lcom/ibm/layout/Location;)V", true); mv.visitVarInsn(ALOAD, 2); mv.visitInsn(ARETURN); mv.visitMaxs(6, 4); mv.visitEnd(); } else { throw new RuntimeException("primitive VLAs are unsupported"); } { mv = cw.visitMethod(ACC_PUBLIC, "bindLocation", "(Lcom/ibm/layout/Location;" + repeatCountField.sig + ")V", null, new String[] { "java/lang/UnsupportedOperationException" }); mv.visitCode(); mv.visitVarInsn(ALOAD, 1); mv.visitVarInsn(ALOAD, 0); mv.visitMethodInsn(INVOKEVIRTUAL, implClassName, "sizeof", "()J", false); mv.visitMethodInsn(INVOKEVIRTUAL, "com/ibm/layout/Location", "checkDataFits", "(J)Z", false); Label l0 = new Label(); mv.visitJumpInsn(IFEQ, l0); mv.visitVarInsn(ALOAD, 0); mv.visitVarInsn(ALOAD, 1); mv.visitFieldInsn(PUTFIELD, implClassName, "location", "Lcom/ibm/layout/Location;"); mv.visitLabel(l0); mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null); mv.visitVarInsn(ALOAD, 0); if (repeatCountField.sig.equals("J")) { mv.visitVarInsn(LLOAD, 2); } else { mv.visitVarInsn(ILOAD, 2); } mv.visitMethodInsn(INVOKEVIRTUAL, implClassName, fieldDesc[i].repeatCountMember, "(" + repeatCountField.sig + ")V", false); mv.visitInsn(RETURN); mv.visitMaxs(3, 3); mv.visitEnd(); } } } else if (fieldDesc[i].dims == null) { /* nested field */ mv = cw.visitMethod(ACC_PUBLIC, fieldDesc[i].name, "()" + fieldDesc[i].sig, null, null); mv.visitCode(); mv.visitTypeInsn(NEW, ImplHelper.getImplClassName(fieldDesc[i].rawType)); mv.visitInsn(DUP); mv.visitMethodInsn(INVOKESPECIAL, ImplHelper.getImplClassName(fieldDesc[i].rawType), "<init>", "()V", itf); mv.visitVarInsn(ASTORE, 1); mv.visitTypeInsn(NEW, "com/ibm/layout/Location"); mv.visitInsn(DUP); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, this.implClassName, "location", "Lcom/ibm/layout/Location;"); mv.visitLdcInsn(fieldDesc[i].offset); mv.visitMethodInsn(INVOKESPECIAL, "com/ibm/layout/Location", "<init>", "(Lcom/ibm/layout/Location;J)V", itf); mv.visitVarInsn(ASTORE, 2); mv.visitVarInsn(ALOAD, 1); mv.visitVarInsn(ALOAD, 2); mv.visitMethodInsn(INVOKEVIRTUAL, ImplHelper.getImplClassName(fieldDesc[i].rawType), "bindLocation", "(Lcom/ibm/layout/Location;)V", itf); mv.visitVarInsn(ALOAD, 1); mv.visitInsn(ARETURN); mv.visitMaxs(5, 3); mv.visitEnd(); } else if (fieldDesc[i].dims.length == 1) { mv = cw.visitMethod(ACC_PUBLIC, fieldDesc[i].name, "()" + fieldDesc[i].sig, "()" + fieldDesc[i].sigGeneric, null); mv.visitCode(); if ("" != fieldDesc[i].elementImpl) { mv.visitTypeInsn(NEW, fieldDesc[i].elementImpl); mv.visitInsn(DUP); mv.visitMethodInsn(INVOKESPECIAL, fieldDesc[i].elementImpl, "<init>", "()V", itf); mv.visitVarInsn(ASTORE, 1); mv.visitTypeInsn(NEW, fieldDesc[i].impl); mv.visitInsn(DUP); mv.visitLdcInsn(fieldDesc[i].dims[0]); mv.visitVarInsn(ALOAD, 1); mv.visitMethodInsn(INVOKEVIRTUAL, fieldDesc[i].elementImpl, "sizeof", "()J", itf); mv.visitMethodInsn(INVOKESPECIAL, fieldDesc[i].impl, "<init>", "(JJ)V", itf); mv.visitVarInsn(ASTORE, 2); mv.visitTypeInsn(NEW, "com/ibm/layout/Location"); mv.visitInsn(DUP); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, this.implClassName, "location", "Lcom/ibm/layout/Location;"); mv.visitLdcInsn(fieldDesc[i].offset); mv.visitMethodInsn(INVOKESPECIAL, "com/ibm/layout/Location", "<init>", "(Lcom/ibm/layout/Location;J)V", itf); mv.visitVarInsn(ASTORE, 3); mv.visitVarInsn(ALOAD, 2); mv.visitVarInsn(ALOAD, 3); mv.visitMethodInsn(INVOKEVIRTUAL, fieldDesc[i].impl, "bindLocation", "(Lcom/ibm/layout/Location;)V", itf); mv.visitVarInsn(ALOAD, 2); mv.visitInsn(ARETURN); mv.visitMaxs(6, 4); mv.visitEnd(); } else { mv.visitTypeInsn(NEW, fieldDesc[i].impl); mv.visitInsn(DUP); mv.visitLdcInsn(fieldDesc[i].dims[0]); mv.visitMethodInsn(INVOKESPECIAL, fieldDesc[i].impl, "<init>", "(J)V", itf); mv.visitVarInsn(ASTORE, 1); mv.visitTypeInsn(NEW, "com/ibm/layout/Location"); mv.visitInsn(DUP); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, this.implClassName, "location", "Lcom/ibm/layout/Location;"); mv.visitLdcInsn(fieldDesc[i].offset); mv.visitMethodInsn(INVOKESPECIAL, "com/ibm/layout/Location", "<init>", "(Lcom/ibm/layout/Location;J)V", itf); mv.visitVarInsn(ASTORE, 2); mv.visitVarInsn(ALOAD, 1); mv.visitVarInsn(ALOAD, 2); mv.visitMethodInsn(INVOKEVIRTUAL, fieldDesc[i].impl, "bindLocation", "(Lcom/ibm/layout/Location;)V", itf); mv.visitVarInsn(ALOAD, 1); mv.visitInsn(ARETURN); mv.visitMaxs(5, 3); mv.visitEnd(); } } else if (fieldDesc[i].dims.length == 2) { if ("" != fieldDesc[i].elementImpl) { mv = cw.visitMethod(ACC_PUBLIC, fieldDesc[i].name, "()" + fieldDesc[i].sig, "()" + fieldDesc[i].sigGeneric, null); mv.visitCode(); mv.visitTypeInsn(NEW, fieldDesc[i].elementImpl); mv.visitInsn(DUP); mv.visitMethodInsn(INVOKESPECIAL, fieldDesc[i].elementImpl, "<init>", "()V", itf); mv.visitVarInsn(ASTORE, 1); mv.visitTypeInsn(NEW, fieldDesc[i].impl); mv.visitInsn(DUP); mv.visitLdcInsn(fieldDesc[i].dims[0]); mv.visitLdcInsn(fieldDesc[i].dims[1]); mv.visitVarInsn(ALOAD, 1); mv.visitMethodInsn(INVOKEVIRTUAL, fieldDesc[i].elementImpl, "sizeof", "()J", itf); mv.visitMethodInsn(INVOKESPECIAL, fieldDesc[i].impl, "<init>", "(JJJ)V", itf); mv.visitVarInsn(ASTORE, 2); mv.visitTypeInsn(NEW, "com/ibm/layout/Location"); mv.visitInsn(DUP); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, this.implClassName, "location", "Lcom/ibm/layout/Location;"); mv.visitLdcInsn(fieldDesc[i].offset); mv.visitMethodInsn(INVOKESPECIAL, "com/ibm/layout/Location", "<init>", "(Lcom/ibm/layout/Location;J)V", itf); mv.visitVarInsn(ASTORE, 3); mv.visitVarInsn(ALOAD, 2); mv.visitVarInsn(ALOAD, 3); mv.visitMethodInsn(INVOKEVIRTUAL, fieldDesc[i].impl, "bindLocation", "(Lcom/ibm/layout/Location;)V", itf); mv.visitVarInsn(ALOAD, 2); mv.visitInsn(ARETURN); mv.visitMaxs(8, 4); mv.visitEnd(); } else { mv = cw.visitMethod(ACC_PUBLIC, fieldDesc[i].name, "()" + fieldDesc[i].sig, "()" + fieldDesc[i].sigGeneric, null); mv.visitCode(); mv.visitTypeInsn(NEW, fieldDesc[i].impl); mv.visitInsn(DUP); mv.visitLdcInsn(fieldDesc[i].dims[0]); mv.visitLdcInsn(fieldDesc[i].dims[1]); mv.visitMethodInsn(INVOKESPECIAL, fieldDesc[i].impl, "<init>", "(JJ)V", itf); mv.visitVarInsn(ASTORE, 1); mv.visitTypeInsn(NEW, "com/ibm/layout/Location"); mv.visitInsn(DUP); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, this.implClassName, "location", "Lcom/ibm/layout/Location;"); mv.visitLdcInsn(fieldDesc[i].offset); mv.visitMethodInsn(INVOKESPECIAL, "com/ibm/layout/Location", "<init>", "(Lcom/ibm/layout/Location;J)V", itf); mv.visitVarInsn(ASTORE, 2); mv.visitVarInsn(ALOAD, 1); mv.visitVarInsn(ALOAD, 2); mv.visitMethodInsn(INVOKEVIRTUAL, fieldDesc[i].impl, "bindLocation", "(Lcom/ibm/layout/Location;)V", itf); mv.visitVarInsn(ALOAD, 1); mv.visitInsn(ARETURN); mv.visitMaxs(6, 3); mv.visitEnd(); } } } } // setters for (int i = 0; i < fieldDesc.length; i++) { if (ImplHelper.isTypePrimitive(fieldDesc[i].sig)) { mv = cw.visitMethod(ACC_PUBLIC, fieldDesc[i].name, "(" + fieldDesc[i].sig + ")V", null, null); mv.visitCode(); mv.visitFieldInsn(GETSTATIC, implClassName, "unsafe", "Lsun/misc/Unsafe;"); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, implClassName, "location", "Lcom/ibm/layout/Location;"); mv.visitMethodInsn(INVOKEVIRTUAL, "com/ibm/layout/Location", "getData", "()[B", itf); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, implClassName, "location", "Lcom/ibm/layout/Location;"); mv.visitMethodInsn(INVOKEVIRTUAL, "com/ibm/layout/Location", "getOffset", "()J", itf); mv.visitLdcInsn(fieldDesc[i].offset); mv.visitInsn(LADD); if (fieldDesc[i].sig == "D") { mv.visitVarInsn(DLOAD, 1); } else if (fieldDesc[i].sig == "J") { mv.visitVarInsn(LLOAD, 1); } else if (fieldDesc[i].sig == "F") { mv.visitVarInsn(FLOAD, 1); } else { mv.visitVarInsn(ILOAD, 1); } mv.visitMethodInsn(INVOKEVIRTUAL, "sun/misc/Unsafe", "put" + ImplHelper.fieldSig2MethodType(fieldDesc[i].sig), "(Ljava/lang/Object;J" + fieldDesc[i].sig + ")V", itf); mv.visitInsn(RETURN); mv.visitMaxs(6, 2); mv.visitEnd(); } } { mv = cw.visitMethod(ACC_PUBLIC, "copyFrom", "(L" + implClassName + ";)V", null, null); mv.visitCode(); mv.visitVarInsn(ALOAD, 0); mv.visitVarInsn(ALOAD, 1); mv.visitMethodInsn(INVOKESPECIAL, implClassName, "copyFrom", "(Lcom/ibm/layout/Layout;)V", itf); mv.visitInsn(RETURN); mv.visitMaxs(2, 2); mv.visitEnd(); } { mv = cw.visitMethod(ACC_PUBLIC, "toString", "()Ljava/lang/String;", null, null); mv.visitCode(); mv.visitTypeInsn(NEW, "java/lang/StringBuilder"); mv.visitInsn(DUP); mv.visitLdcInsn("("); mv.visitMethodInsn(INVOKESPECIAL, "java/lang/StringBuilder", "<init>", "(Ljava/lang/String;)V", false); for (int i = 0; i < fieldDesc.length; i++) { if (ImplHelper.isTypePrimitive(fieldDesc[i].sig)) { mv.visitLdcInsn(fieldDesc[i].name + ": "); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false); mv.visitVarInsn(ALOAD, 0); mv.visitMethodInsn(INVOKEVIRTUAL, implClassName, fieldDesc[i].name, "()" + fieldDesc[i].sig, false); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(" + ImplHelper.getByteCodeSig(fieldDesc[i].sig) + ")Ljava/lang/StringBuilder;", false); if (i < (fieldDesc.length - 1)) { mv.visitLdcInsn(", "); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false); } } else { mv.visitVarInsn(ALOAD, 0); mv.visitMethodInsn(INVOKEVIRTUAL, implClassName, fieldDesc[i].name, "()" + fieldDesc[i].sig, false); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Object", "toString", "()Ljava/lang/String;", false); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false); } } mv.visitLdcInsn(")"); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "toString", "()Ljava/lang/String;", false); mv.visitInsn(ARETURN); mv.visitMaxs(3, 1); mv.visitEnd(); } ImplHelper.genLayoutTypeImpl(cw, mv, fv, implClassName, isVariableLengthLayout); ImplHelper.getLayoutImpl(cw, mv, implClassName); cw.visitEnd(); return cw.toByteArray(); }
From source file:com.ibm.layout.GenVLArray.java
License:Open Source License
/** * Generate bytecodes for runtime class//from w w w . jav a2 s . c o m * * @return byte array containing bytecodes for runtime class * @throws Exception */ public byte[] genBytecode() throws Exception { ClassWriter cw = new ClassWriter(0); MethodVisitor mv; FieldVisitor fv; final boolean itf = false; /* If user-defined array class is supplied, use it as superclass, and use its name instead of generating it */ cw.visit(V1_8, ACC_FINAL + ACC_SUPER, arrayImplClassName, arrayInterfaceClassSig, "java/lang/Object", new String[] { arrayInterfaceClassName }); { fv = cw.visitField(ACC_PROTECTED + ACC_FINAL, "length", "J", null, null); fv.visitEnd(); } { fv = cw.visitField(ACC_PROTECTED + ACC_FINAL, "elementSize", "J", null, null); fv.visitEnd(); } { fv = cw.visitField(ACC_PRIVATE, "arraySize", "J", null, null); fv.visitEnd(); } { mv = cw.visitMethod(ACC_PROTECTED, "<init>", "(JJ)V", null, null); mv.visitCode(); mv.visitVarInsn(ALOAD, 0); mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false); mv.visitVarInsn(ALOAD, 0); mv.visitVarInsn(LLOAD, 3); mv.visitFieldInsn(PUTFIELD, arrayImplClassName, "elementSize", "J"); mv.visitVarInsn(ALOAD, 0); mv.visitVarInsn(LLOAD, 1); mv.visitFieldInsn(PUTFIELD, arrayImplClassName, "length", "J"); mv.visitVarInsn(ALOAD, 0); mv.visitVarInsn(LLOAD, 3); mv.visitVarInsn(LLOAD, 1); mv.visitInsn(LMUL); mv.visitFieldInsn(PUTFIELD, arrayImplClassName, "arraySize", "J"); mv.visitInsn(RETURN); mv.visitMaxs(5, 5); mv.visitEnd(); } { mv = cw.visitMethod(ACC_PUBLIC, "sizeof", "()J", null, null); mv.visitCode(); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, arrayImplClassName, "arraySize", "J"); mv.visitInsn(LRETURN); mv.visitMaxs(2, 1); mv.visitEnd(); } { mv = cw.visitMethod(ACC_PUBLIC + ACC_STATIC, "getComponentType", "()Ljava/lang/Class;", "()Ljava/lang/Class<*>;", null); mv.visitCode(); mv.visitLdcInsn(Type.getType("L" + elementInterfaceClassName + ";")); mv.visitInsn(ARETURN); mv.visitMaxs(1, 0); mv.visitEnd(); } { mv = cw.visitMethod(ACC_PUBLIC + ACC_FINAL, "getVLALength", "()J", null, null); mv.visitCode(); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, arrayImplClassName, "length", "J"); mv.visitInsn(LRETURN); mv.visitMaxs(2, 1); mv.visitEnd(); } { mv = cw.visitMethod(ACC_PUBLIC, "at", "(J)L" + elementInterfaceClassName + ";", null, null); mv.visitCode(); mv.visitTypeInsn(NEW, elementImplClassName); mv.visitInsn(DUP); mv.visitMethodInsn(INVOKESPECIAL, elementImplClassName, "<init>", "()V", false); mv.visitVarInsn(ASTORE, 3); mv.visitVarInsn(ALOAD, 3); mv.visitTypeInsn(NEW, "com/ibm/layout/Location"); mv.visitInsn(DUP); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, arrayImplClassName, "location", "Lcom/ibm/layout/Location;"); mv.visitVarInsn(LLOAD, 1); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, arrayImplClassName, "elementSize", "J"); mv.visitInsn(LMUL); mv.visitMethodInsn(INVOKESPECIAL, "com/ibm/layout/Location", "<init>", "(Lcom/ibm/layout/Location;J)V", false); mv.visitMethodInsn(INVOKEVIRTUAL, elementImplClassName, "bindLocation", "(Lcom/ibm/layout/Location;)V", false); mv.visitVarInsn(ALOAD, 3); mv.visitInsn(ARETURN); mv.visitMaxs(8, 4); mv.visitEnd(); } { mv = cw.visitMethod(ACC_PUBLIC, "range", "(JJ)Lcom/ibm/layout/Array1D;", "(JJ)Lcom/ibm/layout/Array1D<" + elementInterfaceClassName + ";>;", null); mv.visitCode(); mv.visitTypeInsn(NEW, arrayImplClassName); mv.visitInsn(DUP); mv.visitVarInsn(LLOAD, 3); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, this.arrayImplClassName, "elementSize", "J"); mv.visitMethodInsn(INVOKESPECIAL, this.arrayImplClassName, "<init>", "(JJ)V", itf); mv.visitVarInsn(ASTORE, 5); mv.visitTypeInsn(NEW, "com/ibm/layout/Location"); mv.visitInsn(DUP); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, arrayImplClassName, "location", "Lcom/ibm/layout/Location;"); mv.visitVarInsn(LLOAD, 1); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, arrayImplClassName, "elementSize", "J"); mv.visitInsn(LMUL); mv.visitMethodInsn(INVOKESPECIAL, "com/ibm/layout/Location", "<init>", "(Lcom/ibm/layout/Location;J)V", itf); mv.visitVarInsn(ASTORE, 6); mv.visitVarInsn(ALOAD, 5); mv.visitVarInsn(ALOAD, 6); mv.visitMethodInsn(INVOKEVIRTUAL, arrayImplClassName, "bindLocation", "(Lcom/ibm/layout/Location;)V", itf); mv.visitVarInsn(ALOAD, 5); mv.visitInsn(ARETURN); mv.visitMaxs(7, 7); mv.visitEnd(); } { mv = cw.visitMethod(ACC_PUBLIC, "put", "(JLcom/ibm/layout/Layout;)V", null, null); mv.visitCode(); mv.visitTypeInsn(NEW, elementImplClassName); mv.visitInsn(DUP); mv.visitMethodInsn(INVOKESPECIAL, elementImplClassName, "<init>", "()V", false); mv.visitVarInsn(ASTORE, 4); mv.visitVarInsn(ALOAD, 4); mv.visitTypeInsn(NEW, "com/ibm/layout/Location"); mv.visitInsn(DUP); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, arrayImplClassName, "location", "Lcom/ibm/layout/Location;"); mv.visitVarInsn(LLOAD, 1); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, arrayImplClassName, "elementSize", "J"); mv.visitInsn(LMUL); mv.visitMethodInsn(INVOKESPECIAL, "com/ibm/layout/Location", "<init>", "(Lcom/ibm/layout/Location;J)V", false); mv.visitMethodInsn(INVOKEVIRTUAL, elementImplClassName, "bindLocation", "(Lcom/ibm/layout/Location;)V", false); mv.visitVarInsn(ALOAD, 4); mv.visitVarInsn(ALOAD, 3); mv.visitMethodInsn(INVOKEVIRTUAL, elementImplClassName, "copyFrom", "(Lcom/ibm/layout/Layout;)V", false); mv.visitInsn(RETURN); mv.visitMaxs(8, 5); mv.visitEnd(); } { mv = cw.visitMethod(ACC_PUBLIC, "put", "(JL" + elementInterfaceClassName + ";)V", null, null); mv.visitCode(); mv.visitVarInsn(ALOAD, 0); mv.visitVarInsn(LLOAD, 1); mv.visitMethodInsn(INVOKEVIRTUAL, arrayImplClassName, "at", "(J)L" + elementInterfaceClassName + ";", itf); mv.visitTypeInsn(CHECKCAST, elementImplClassName); mv.visitVarInsn(ALOAD, 3); mv.visitTypeInsn(CHECKCAST, elementImplClassName); mv.visitMethodInsn(INVOKEVIRTUAL, elementImplClassName, "copyFrom", "(L" + elementImplClassName + ";)V", itf); mv.visitInsn(RETURN); mv.visitMaxs(3, 4); mv.visitEnd(); } { mv = cw.visitMethod(ACC_PUBLIC + ACC_BRIDGE + ACC_SYNTHETIC, "at", "(J)Lcom/ibm/layout/Layout;", null, null); mv.visitCode(); mv.visitVarInsn(ALOAD, 0); mv.visitVarInsn(LLOAD, 1); mv.visitMethodInsn(INVOKEVIRTUAL, arrayImplClassName, "at", "(J)L" + elementInterfaceClassName + ";", itf); mv.visitInsn(ARETURN); mv.visitMaxs(3, 3); mv.visitEnd(); } { mv = cw.visitMethod(ACC_PUBLIC, "toString", "()Ljava/lang/String;", null, null); mv.visitCode(); mv.visitTypeInsn(NEW, "java/lang/StringBuffer"); mv.visitInsn(DUP); mv.visitLdcInsn("["); mv.visitMethodInsn(INVOKESPECIAL, "java/lang/StringBuffer", "<init>", "(Ljava/lang/String;)V", false); mv.visitVarInsn(ASTORE, 1); mv.visitInsn(LCONST_0); mv.visitVarInsn(LSTORE, 2); Label l0 = new Label(); mv.visitJumpInsn(GOTO, l0); Label l1 = new Label(); mv.visitLabel(l1); mv.visitFrame(Opcodes.F_APPEND, 2, new Object[] { "java/lang/StringBuffer", Opcodes.LONG }, 0, null); mv.visitVarInsn(ALOAD, 1); mv.visitTypeInsn(NEW, "java/lang/StringBuilder"); mv.visitInsn(DUP); mv.visitLdcInsn(" "); mv.visitMethodInsn(INVOKESPECIAL, "java/lang/StringBuilder", "<init>", "(Ljava/lang/String;)V", false); mv.visitVarInsn(ALOAD, 0); mv.visitVarInsn(LLOAD, 2); mv.visitMethodInsn(INVOKEVIRTUAL, arrayImplClassName, "at", "(J)L" + elementInterfaceClassName + ";", false); mv.visitMethodInsn(INVOKEINTERFACE, elementInterfaceClassName, "toString", "()Ljava/lang/String;", true); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "toString", "()Ljava/lang/String;", false); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuffer", "append", "(Ljava/lang/String;)Ljava/lang/StringBuffer;", false); mv.visitInsn(POP); mv.visitVarInsn(LLOAD, 2); mv.visitInsn(LCONST_1); mv.visitInsn(LADD); mv.visitVarInsn(LSTORE, 2); mv.visitLabel(l0); mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null); mv.visitVarInsn(LLOAD, 2); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, arrayImplClassName, "length", "J"); mv.visitInsn(LCMP); mv.visitJumpInsn(IFLT, l1); mv.visitVarInsn(ALOAD, 1); mv.visitLdcInsn(" ]"); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuffer", "append", "(Ljava/lang/String;)Ljava/lang/StringBuffer;", false); mv.visitInsn(POP); mv.visitVarInsn(ALOAD, 1); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuffer", "toString", "()Ljava/lang/String;", false); mv.visitInsn(ARETURN); mv.visitMaxs(5, 4); mv.visitEnd(); } ImplHelper.genLayoutTypeImpl(cw, mv, fv, arrayImplClassName, false); cw.visitEnd(); return cw.toByteArray(); }
From source file:com.ibm.layout.ImplHelper.java
License:Open Source License
static void genLayoutTypeImpl(ClassVisitor cw, MethodVisitor mv, FieldVisitor fv, String typeName, boolean layoutContainsVLA) { {//from w ww . j a va 2 s. c om fv = cw.visitField(ACC_PRIVATE + ACC_FINAL + ACC_STATIC, "unsafe", "Lsun/misc/Unsafe;", null, null); fv.visitEnd(); } { mv = cw.visitMethod(ACC_PUBLIC, "containsVLA", "()Z", null, null); mv.visitCode(); //if layout contains VLA return true, otherwise false if (layoutContainsVLA) { mv.visitInsn(ICONST_1); } else { mv.visitInsn(ICONST_0); } mv.visitInsn(IRETURN); mv.visitMaxs(1, 1); mv.visitEnd(); } { fv = cw.visitField(ACC_PROTECTED, "location", "Lcom/ibm/layout/Location;", null, null); fv.visitEnd(); } { mv = cw.visitMethod(ACC_PUBLIC, "bindLocation", "(Lcom/ibm/layout/Location;)V", null, null); mv.visitCode(); mv.visitVarInsn(ALOAD, 1); mv.visitVarInsn(ALOAD, 0); mv.visitMethodInsn(INVOKEVIRTUAL, typeName, "sizeof", "()J", false); mv.visitMethodInsn(INVOKEVIRTUAL, "com/ibm/layout/Location", "checkDataFits", "(J)Z", false); Label l0 = new Label(); mv.visitJumpInsn(IFEQ, l0); mv.visitVarInsn(ALOAD, 0); mv.visitVarInsn(ALOAD, 1); mv.visitFieldInsn(PUTFIELD, typeName, "location", "Lcom/ibm/layout/Location;"); mv.visitLabel(l0); mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null); mv.visitInsn(RETURN); mv.visitMaxs(3, 2); mv.visitEnd(); } { mv = cw.visitMethod(ACC_PUBLIC + ACC_FINAL, "writeToByteArray", "(J[BII)I", null, null); mv.visitCode(); mv.visitVarInsn(ILOAD, 5); mv.visitInsn(I2L); mv.visitVarInsn(ALOAD, 0); mv.visitMethodInsn(INVOKEVIRTUAL, typeName, "sizeof", "()J", false); mv.visitInsn(LCMP); Label l0 = new Label(); mv.visitJumpInsn(IFLE, l0); mv.visitVarInsn(ALOAD, 0); mv.visitMethodInsn(INVOKEVIRTUAL, typeName, "sizeof", "()J", false); mv.visitInsn(L2I); mv.visitVarInsn(ISTORE, 5); mv.visitLabel(l0); mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, typeName, "location", "Lcom/ibm/layout/Location;"); mv.visitMethodInsn(INVOKEVIRTUAL, "com/ibm/layout/Location", "getData", "()[B", false); Label l1 = new Label(); mv.visitJumpInsn(IFNULL, l1); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, typeName, "location", "Lcom/ibm/layout/Location;"); mv.visitMethodInsn(INVOKEVIRTUAL, "com/ibm/layout/Location", "getData", "()[B", false); mv.visitVarInsn(LLOAD, 1); mv.visitInsn(L2I); mv.visitVarInsn(ALOAD, 3); mv.visitVarInsn(ILOAD, 4); mv.visitVarInsn(ILOAD, 5); mv.visitMethodInsn(INVOKESTATIC, "java/lang/System", "arraycopy", "(Ljava/lang/Object;ILjava/lang/Object;II)V", false); Label l2 = new Label(); mv.visitJumpInsn(GOTO, l2); mv.visitLabel(l1); mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null); mv.visitFieldInsn(GETSTATIC, typeName, "unsafe", "Lsun/misc/Unsafe;"); mv.visitInsn(ACONST_NULL); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, typeName, "location", "Lcom/ibm/layout/Location;"); mv.visitMethodInsn(INVOKEVIRTUAL, "com/ibm/layout/Location", "getOffset", "()J", false); mv.visitVarInsn(LLOAD, 1); mv.visitInsn(LADD); mv.visitVarInsn(ALOAD, 3); mv.visitFieldInsn(GETSTATIC, typeName, "unsafe", "Lsun/misc/Unsafe;"); mv.visitVarInsn(ALOAD, 3); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Object", "getClass", "()Ljava/lang/Class;", false); mv.visitMethodInsn(INVOKEVIRTUAL, "sun/misc/Unsafe", "arrayBaseOffset", "(Ljava/lang/Class;)I", false); mv.visitInsn(I2L); mv.visitVarInsn(ILOAD, 5); mv.visitInsn(I2L); mv.visitMethodInsn(INVOKEVIRTUAL, "sun/misc/Unsafe", "copyMemory", "(Ljava/lang/Object;JLjava/lang/Object;JJ)V", false); mv.visitLabel(l2); mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null); mv.visitVarInsn(ILOAD, 5); mv.visitInsn(IRETURN); mv.visitMaxs(9, 6); mv.visitEnd(); } { mv = cw.visitMethod(ACC_PUBLIC + ACC_FINAL, "readFromByteArray", "(J[BII)I", null, null); mv.visitCode(); mv.visitVarInsn(ILOAD, 5); mv.visitInsn(I2L); mv.visitVarInsn(ALOAD, 0); mv.visitMethodInsn(INVOKEVIRTUAL, typeName, "sizeof", "()J", false); mv.visitInsn(LCMP); Label l0 = new Label(); mv.visitJumpInsn(IFLE, l0); mv.visitVarInsn(ALOAD, 0); mv.visitMethodInsn(INVOKEVIRTUAL, typeName, "sizeof", "()J", false); mv.visitInsn(L2I); mv.visitVarInsn(ISTORE, 5); mv.visitLabel(l0); mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, typeName, "location", "Lcom/ibm/layout/Location;"); mv.visitMethodInsn(INVOKEVIRTUAL, "com/ibm/layout/Location", "getData", "()[B", false); Label l1 = new Label(); mv.visitJumpInsn(IFNULL, l1); mv.visitVarInsn(ALOAD, 3); mv.visitVarInsn(ILOAD, 4); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, typeName, "location", "Lcom/ibm/layout/Location;"); mv.visitMethodInsn(INVOKEVIRTUAL, "com/ibm/layout/Location", "getData", "()[B", false); mv.visitVarInsn(LLOAD, 1); mv.visitInsn(L2I); mv.visitVarInsn(ILOAD, 5); mv.visitMethodInsn(INVOKESTATIC, "java/lang/System", "arraycopy", "(Ljava/lang/Object;ILjava/lang/Object;II)V", false); Label l2 = new Label(); mv.visitJumpInsn(GOTO, l2); mv.visitLabel(l1); mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null); mv.visitFieldInsn(GETSTATIC, typeName, "unsafe", "Lsun/misc/Unsafe;"); mv.visitVarInsn(ALOAD, 3); mv.visitFieldInsn(GETSTATIC, typeName, "unsafe", "Lsun/misc/Unsafe;"); mv.visitVarInsn(ALOAD, 3); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Object", "getClass", "()Ljava/lang/Class;", false); mv.visitMethodInsn(INVOKEVIRTUAL, "sun/misc/Unsafe", "arrayBaseOffset", "(Ljava/lang/Class;)I", false); mv.visitVarInsn(ILOAD, 4); mv.visitInsn(IADD); mv.visitInsn(I2L); mv.visitInsn(ACONST_NULL); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, typeName, "location", "Lcom/ibm/layout/Location;"); mv.visitMethodInsn(INVOKEVIRTUAL, "com/ibm/layout/Location", "getOffset", "()J", false); mv.visitVarInsn(LLOAD, 1); mv.visitInsn(LADD); mv.visitVarInsn(ILOAD, 5); mv.visitInsn(I2L); mv.visitMethodInsn(INVOKEVIRTUAL, "sun/misc/Unsafe", "copyMemory", "(Ljava/lang/Object;JLjava/lang/Object;JJ)V", false); mv.visitLabel(l2); mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null); mv.visitVarInsn(ILOAD, 5); mv.visitInsn(IRETURN); mv.visitMaxs(9, 6); mv.visitEnd(); } { mv = cw.visitMethod(ACC_PUBLIC + ACC_FINAL, "asByteBuffer", "()Ljava/nio/ByteBuffer;", null, null); mv.visitCode(); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, typeName, "location", "Lcom/ibm/layout/Location;"); mv.visitMethodInsn(INVOKEVIRTUAL, "com/ibm/layout/Location", "getData", "()[B", false); Label l0 = new Label(); mv.visitJumpInsn(IFNULL, l0); mv.visitTypeInsn(NEW, "java/lang/UnsupportedOperationException"); mv.visitInsn(DUP); mv.visitLdcInsn("not off-heap"); mv.visitMethodInsn(INVOKESPECIAL, "java/lang/UnsupportedOperationException", "<init>", "(Ljava/lang/String;)V", false); mv.visitInsn(ATHROW); mv.visitLabel(l0); mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, typeName, "location", "Lcom/ibm/layout/Location;"); mv.visitMethodInsn(INVOKEVIRTUAL, "com/ibm/layout/Location", "getOffset", "()J", false); mv.visitVarInsn(ALOAD, 0); mv.visitMethodInsn(INVOKEVIRTUAL, typeName, "sizeof", "()J", false); mv.visitMethodInsn(INVOKESTATIC, "com/ibm/layout/UnsafeHelper", "bufferFromAddress", "(JJ)Ljava/nio/ByteBuffer;", false); mv.visitVarInsn(ASTORE, 1); mv.visitVarInsn(ALOAD, 1); mv.visitMethodInsn(INVOKESTATIC, "java/nio/ByteOrder", "nativeOrder", "()Ljava/nio/ByteOrder;", false); mv.visitMethodInsn(INVOKEVIRTUAL, "java/nio/ByteBuffer", "order", "(Ljava/nio/ByteOrder;)Ljava/nio/ByteBuffer;", false); mv.visitInsn(POP); mv.visitVarInsn(ALOAD, 1); mv.visitInsn(ARETURN); mv.visitMaxs(4, 2); mv.visitEnd(); } { mv = cw.visitMethod(ACC_PUBLIC + ACC_FINAL + ACC_STATIC, "asByteBuffer", "(Lcom/ibm/layout/Location;J)Ljava/nio/ByteBuffer;", null, null); mv.visitCode(); mv.visitVarInsn(ALOAD, 0); mv.visitMethodInsn(INVOKEVIRTUAL, "com/ibm/layout/Location", "getData", "()[B", false); Label l0 = new Label(); mv.visitJumpInsn(IFNULL, l0); mv.visitTypeInsn(NEW, "java/lang/UnsupportedOperationException"); mv.visitInsn(DUP); mv.visitLdcInsn("not off-heap"); mv.visitMethodInsn(INVOKESPECIAL, "java/lang/UnsupportedOperationException", "<init>", "(Ljava/lang/String;)V", false); mv.visitInsn(ATHROW); mv.visitLabel(l0); mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null); mv.visitVarInsn(ALOAD, 0); mv.visitMethodInsn(INVOKEVIRTUAL, "com/ibm/layout/Location", "getOffset", "()J", false); mv.visitVarInsn(LLOAD, 1); mv.visitMethodInsn(INVOKESTATIC, "com/ibm/layout/UnsafeHelper", "bufferFromAddress", "(JJ)Ljava/nio/ByteBuffer;", false); mv.visitVarInsn(ASTORE, 3); mv.visitVarInsn(ALOAD, 3); mv.visitMethodInsn(INVOKESTATIC, "java/nio/ByteOrder", "nativeOrder", "()Ljava/nio/ByteOrder;", false); mv.visitMethodInsn(INVOKEVIRTUAL, "java/nio/ByteBuffer", "order", "(Ljava/nio/ByteOrder;)Ljava/nio/ByteBuffer;", false); mv.visitInsn(POP); mv.visitVarInsn(ALOAD, 3); mv.visitInsn(ARETURN); mv.visitMaxs(4, 4); mv.visitEnd(); } { mv = cw.visitMethod(ACC_PUBLIC + ACC_FINAL, "unsafeCast", "(Ljava/lang/Class;)Lcom/ibm/layout/Layout;", "<T::Lcom/ibm/layout/Layout;>(Ljava/lang/Class<TT;>;)TT;", null); mv.visitCode(); Label l0 = new Label(); Label l1 = new Label(); Label l2 = new Label(); mv.visitTryCatchBlock(l0, l1, l2, "java/lang/NoSuchMethodException"); Label l3 = new Label(); mv.visitTryCatchBlock(l0, l1, l3, "java/lang/SecurityException"); Label l4 = new Label(); mv.visitTryCatchBlock(l0, l1, l4, "java/lang/InstantiationException"); Label l5 = new Label(); mv.visitTryCatchBlock(l0, l1, l5, "java/lang/IllegalAccessException"); Label l6 = new Label(); mv.visitTryCatchBlock(l0, l1, l6, "java/lang/IllegalArgumentException"); Label l7 = new Label(); mv.visitTryCatchBlock(l0, l1, l7, "java/lang/reflect/InvocationTargetException"); mv.visitLabel(l0); mv.visitMethodInsn(INVOKESTATIC, "com/ibm/layout/LayoutHelper", "getFactory", "()Lcom/ibm/layout/LayoutHelper;", false); mv.visitVarInsn(ALOAD, 1); mv.visitMethodInsn(INVOKEVIRTUAL, "com/ibm/layout/LayoutHelper", "genLayoutImpl", "(Ljava/lang/Class;)Ljava/lang/Class;", false); mv.visitVarInsn(ASTORE, 2); mv.visitVarInsn(ALOAD, 2); mv.visitInsn(ICONST_0); mv.visitTypeInsn(ANEWARRAY, "java/lang/Class"); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "getDeclaredConstructor", "([Ljava/lang/Class;)Ljava/lang/reflect/Constructor;", false); mv.visitVarInsn(ASTORE, 3); mv.visitVarInsn(ALOAD, 3); mv.visitInsn(ICONST_1); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/reflect/Constructor", "setAccessible", "(Z)V", false); mv.visitVarInsn(ALOAD, 3); mv.visitInsn(ICONST_0); mv.visitTypeInsn(ANEWARRAY, "java/lang/Object"); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/reflect/Constructor", "newInstance", "([Ljava/lang/Object;)Ljava/lang/Object;", false); mv.visitTypeInsn(CHECKCAST, "com/ibm/layout/Layout"); mv.visitVarInsn(ASTORE, 4); mv.visitVarInsn(ALOAD, 4); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, typeName, "location", "Lcom/ibm/layout/Location;"); mv.visitMethodInsn(INVOKEINTERFACE, "com/ibm/layout/Layout", "bindLocation", "(Lcom/ibm/layout/Location;)V", true); mv.visitVarInsn(ALOAD, 4); mv.visitLabel(l1); mv.visitInsn(ARETURN); mv.visitLabel(l2); mv.visitFrame(Opcodes.F_SAME1, 0, null, 1, new Object[] { "java/lang/NoSuchMethodException" }); mv.visitVarInsn(ASTORE, 2); mv.visitVarInsn(ALOAD, 2); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/NoSuchMethodException", "printStackTrace", "()V", false); Label l8 = new Label(); mv.visitJumpInsn(GOTO, l8); mv.visitLabel(l3); mv.visitFrame(Opcodes.F_SAME1, 0, null, 1, new Object[] { "java/lang/SecurityException" }); mv.visitVarInsn(ASTORE, 2); mv.visitVarInsn(ALOAD, 2); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/SecurityException", "printStackTrace", "()V", false); mv.visitJumpInsn(GOTO, l8); mv.visitLabel(l4); mv.visitFrame(Opcodes.F_SAME1, 0, null, 1, new Object[] { "java/lang/InstantiationException" }); mv.visitVarInsn(ASTORE, 2); mv.visitVarInsn(ALOAD, 2); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/InstantiationException", "printStackTrace", "()V", false); mv.visitJumpInsn(GOTO, l8); mv.visitLabel(l5); mv.visitFrame(Opcodes.F_SAME1, 0, null, 1, new Object[] { "java/lang/IllegalAccessException" }); mv.visitVarInsn(ASTORE, 2); mv.visitVarInsn(ALOAD, 2); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/IllegalAccessException", "printStackTrace", "()V", false); mv.visitJumpInsn(GOTO, l8); mv.visitLabel(l6); mv.visitFrame(Opcodes.F_SAME1, 0, null, 1, new Object[] { "java/lang/IllegalArgumentException" }); mv.visitVarInsn(ASTORE, 2); mv.visitVarInsn(ALOAD, 2); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/IllegalArgumentException", "printStackTrace", "()V", false); mv.visitJumpInsn(GOTO, l8); mv.visitLabel(l7); mv.visitFrame(Opcodes.F_SAME1, 0, null, 1, new Object[] { "java/lang/reflect/InvocationTargetException" }); mv.visitVarInsn(ASTORE, 2); mv.visitVarInsn(ALOAD, 2); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/reflect/InvocationTargetException", "printStackTrace", "()V", false); mv.visitLabel(l8); mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null); mv.visitInsn(ACONST_NULL); mv.visitInsn(ARETURN); mv.visitMaxs(2, 5); mv.visitEnd(); } { mv = cw.visitMethod(ACC_PUBLIC + ACC_FINAL, "unsafeCast", "(Ljava/lang/Class;J)Lcom/ibm/layout/Array1D;", "<T::Lcom/ibm/layout/Layout;>(Ljava/lang/Class<TT;>;J)Lcom/ibm/layout/Array1D<TT;>;", null); mv.visitCode(); Label l0 = new Label(); Label l1 = new Label(); Label l2 = new Label(); mv.visitTryCatchBlock(l0, l1, l2, "java/lang/NoSuchMethodException"); Label l3 = new Label(); mv.visitTryCatchBlock(l0, l1, l3, "java/lang/SecurityException"); Label l4 = new Label(); mv.visitTryCatchBlock(l0, l1, l4, "java/lang/InstantiationException"); Label l5 = new Label(); mv.visitTryCatchBlock(l0, l1, l5, "java/lang/IllegalAccessException"); Label l6 = new Label(); mv.visitTryCatchBlock(l0, l1, l6, "java/lang/IllegalArgumentException"); Label l7 = new Label(); mv.visitTryCatchBlock(l0, l1, l7, "java/lang/reflect/InvocationTargetException"); mv.visitLabel(l0); mv.visitMethodInsn(INVOKESTATIC, "com/ibm/layout/LayoutHelper", "getFactory", "()Lcom/ibm/layout/LayoutHelper;", false); mv.visitVarInsn(ASTORE, 4); mv.visitVarInsn(ALOAD, 4); mv.visitVarInsn(ALOAD, 1); mv.visitMethodInsn(INVOKEVIRTUAL, "com/ibm/layout/LayoutHelper", "genLayoutImpl", "(Ljava/lang/Class;)Ljava/lang/Class;", false); mv.visitVarInsn(ASTORE, 5); mv.visitVarInsn(ALOAD, 5); mv.visitInsn(ICONST_0); mv.visitTypeInsn(ANEWARRAY, "java/lang/Class"); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "getDeclaredConstructor", "([Ljava/lang/Class;)Ljava/lang/reflect/Constructor;", false); mv.visitVarInsn(ASTORE, 6); mv.visitVarInsn(ALOAD, 6); mv.visitInsn(ICONST_1); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/reflect/Constructor", "setAccessible", "(Z)V", false); mv.visitVarInsn(ALOAD, 6); mv.visitInsn(ICONST_0); mv.visitTypeInsn(ANEWARRAY, "java/lang/Object"); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/reflect/Constructor", "newInstance", "([Ljava/lang/Object;)Ljava/lang/Object;", false); mv.visitTypeInsn(CHECKCAST, "com/ibm/layout/Layout"); mv.visitMethodInsn(INVOKEINTERFACE, "com/ibm/layout/Layout", "sizeof", "()J", true); mv.visitVarInsn(LSTORE, 7); mv.visitVarInsn(ALOAD, 4); mv.visitVarInsn(ALOAD, 1); mv.visitMethodInsn(INVOKEVIRTUAL, "com/ibm/layout/LayoutHelper", "genArray1DImpl", "(Ljava/lang/Class;)Ljava/lang/Class;", false); mv.visitVarInsn(ASTORE, 9); mv.visitVarInsn(ALOAD, 9); mv.visitInsn(ICONST_2); mv.visitTypeInsn(ANEWARRAY, "java/lang/Class"); mv.visitInsn(DUP); mv.visitInsn(ICONST_0); mv.visitFieldInsn(GETSTATIC, "java/lang/Long", "TYPE", "Ljava/lang/Class;"); mv.visitInsn(AASTORE); mv.visitInsn(DUP); mv.visitInsn(ICONST_1); mv.visitFieldInsn(GETSTATIC, "java/lang/Long", "TYPE", "Ljava/lang/Class;"); mv.visitInsn(AASTORE); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "getDeclaredConstructor", "([Ljava/lang/Class;)Ljava/lang/reflect/Constructor;", false); mv.visitVarInsn(ASTORE, 10); mv.visitVarInsn(ALOAD, 10); mv.visitInsn(ICONST_1); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/reflect/Constructor", "setAccessible", "(Z)V", false); mv.visitVarInsn(ALOAD, 10); mv.visitInsn(ICONST_2); mv.visitTypeInsn(ANEWARRAY, "java/lang/Object"); mv.visitInsn(DUP); mv.visitInsn(ICONST_0); mv.visitVarInsn(LLOAD, 2); mv.visitMethodInsn(INVOKESTATIC, "java/lang/Long", "valueOf", "(J)Ljava/lang/Long;", false); mv.visitInsn(AASTORE); mv.visitInsn(DUP); mv.visitInsn(ICONST_1); mv.visitVarInsn(LLOAD, 7); mv.visitMethodInsn(INVOKESTATIC, "java/lang/Long", "valueOf", "(J)Ljava/lang/Long;", false); mv.visitInsn(AASTORE); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/reflect/Constructor", "newInstance", "([Ljava/lang/Object;)Ljava/lang/Object;", false); mv.visitTypeInsn(CHECKCAST, "com/ibm/layout/Array1D"); mv.visitVarInsn(ASTORE, 11); mv.visitVarInsn(ALOAD, 11); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, typeName, "location", "Lcom/ibm/layout/Location;"); mv.visitMethodInsn(INVOKEINTERFACE, "com/ibm/layout/Array1D", "bindLocation", "(Lcom/ibm/layout/Location;)V", true); mv.visitVarInsn(ALOAD, 11); mv.visitLabel(l1); mv.visitInsn(ARETURN); mv.visitLabel(l2); mv.visitFrame(Opcodes.F_SAME1, 0, null, 1, new Object[] { "java/lang/NoSuchMethodException" }); mv.visitVarInsn(ASTORE, 4); mv.visitVarInsn(ALOAD, 4); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/NoSuchMethodException", "printStackTrace", "()V", false); Label l8 = new Label(); mv.visitJumpInsn(GOTO, l8); mv.visitLabel(l3); mv.visitFrame(Opcodes.F_SAME1, 0, null, 1, new Object[] { "java/lang/SecurityException" }); mv.visitVarInsn(ASTORE, 4); mv.visitVarInsn(ALOAD, 4); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/SecurityException", "printStackTrace", "()V", false); mv.visitJumpInsn(GOTO, l8); mv.visitLabel(l4); mv.visitFrame(Opcodes.F_SAME1, 0, null, 1, new Object[] { "java/lang/InstantiationException" }); mv.visitVarInsn(ASTORE, 4); mv.visitVarInsn(ALOAD, 4); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/InstantiationException", "printStackTrace", "()V", false); mv.visitJumpInsn(GOTO, l8); mv.visitLabel(l5); mv.visitFrame(Opcodes.F_SAME1, 0, null, 1, new Object[] { "java/lang/IllegalAccessException" }); mv.visitVarInsn(ASTORE, 4); mv.visitVarInsn(ALOAD, 4); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/IllegalAccessException", "printStackTrace", "()V", false); mv.visitJumpInsn(GOTO, l8); mv.visitLabel(l6); mv.visitFrame(Opcodes.F_SAME1, 0, null, 1, new Object[] { "java/lang/IllegalArgumentException" }); mv.visitVarInsn(ASTORE, 4); mv.visitVarInsn(ALOAD, 4); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/IllegalArgumentException", "printStackTrace", "()V", false); mv.visitJumpInsn(GOTO, l8); mv.visitLabel(l7); mv.visitFrame(Opcodes.F_SAME1, 0, null, 1, new Object[] { "java/lang/reflect/InvocationTargetException" }); mv.visitVarInsn(ASTORE, 4); mv.visitVarInsn(ALOAD, 4); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/reflect/InvocationTargetException", "printStackTrace", "()V", false); mv.visitLabel(l8); mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null); mv.visitInsn(ACONST_NULL); mv.visitInsn(ARETURN); mv.visitMaxs(6, 12); mv.visitEnd(); } }
From source file:com.khubla.jvmbasic.jvmbasicc.JVMBasicCompiler.java
License:Open Source License
/** * generate void main(String[])/*from w ww .j a v a 2 s . co m*/ * <p> * <code> * public static void main(String[] args) { * ExampleProgram exampleProgram = new ExampleProgram(); * try { * exampleProgram.inputStream = System.in; * exampleProgram.outputStream = System.out; * exampleProgram.program(); * } catch (Exception e) { * e.printStackTrace(); * } * } * </code> * </p> */ protected void generateMain(String classname, ClassWriter classWriter) throws Exception { try { /* * make method */ final MethodVisitor methodVisitor = classWriter.visitMethod(Opcodes.ACC_PUBLIC + Opcodes.ACC_STATIC, "main", "([Ljava/lang/String;)V", null, null); methodVisitor.visitCode(); final Label l0 = new Label(); final Label l1 = new Label(); final Label l2 = new Label(); methodVisitor.visitTryCatchBlock(l0, l1, l2, "java/lang/Exception"); final Label l3 = new Label(); methodVisitor.visitLabel(l3); /* * declare a local instance of the class in the void() main, store as variable 1. */ methodVisitor.visitTypeInsn(Opcodes.NEW, classname); methodVisitor.visitInsn(Opcodes.DUP); methodVisitor.visitMethodInsn(Opcodes.INVOKESPECIAL, classname, "<init>", "()V"); methodVisitor.visitVarInsn(Opcodes.ASTORE, 1); /* * assign the input stream */ methodVisitor.visitVarInsn(Opcodes.ALOAD, 1); methodVisitor.visitFieldInsn(Opcodes.GETSTATIC, "java/lang/System", "in", "Ljava/io/InputStream;"); methodVisitor.visitFieldInsn(Opcodes.PUTFIELD, classname, "inputStream", "Ljava/io/InputStream;"); /* * assign the output stream */ methodVisitor.visitVarInsn(Opcodes.ALOAD, 1); methodVisitor.visitFieldInsn(Opcodes.GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;"); methodVisitor.visitFieldInsn(Opcodes.PUTFIELD, classname, "outputStream", "Ljava/io/PrintStream;"); /* * load the class instance from variable 1 and call "program" */ methodVisitor.visitLabel(l0); methodVisitor.visitVarInsn(Opcodes.ALOAD, 1); methodVisitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, classname, "program", "()V"); methodVisitor.visitLabel(l1); final Label l4 = new Label(); methodVisitor.visitJumpInsn(Opcodes.GOTO, l4); methodVisitor.visitLabel(l2); methodVisitor.visitFrame(Opcodes.F_FULL, 2, new Object[] { "[Ljava/lang/String;", classname }, 1, new Object[] { "java/lang/Exception" }); methodVisitor.visitVarInsn(Opcodes.ASTORE, 2); final Label l5 = new Label(); methodVisitor.visitLabel(l5); methodVisitor.visitLineNumber(21, l5); methodVisitor.visitVarInsn(Opcodes.ALOAD, 2); methodVisitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Exception", "printStackTrace", "()V"); /* * return */ methodVisitor.visitLabel(l4); methodVisitor.visitFrame(Opcodes.F_SAME, 0, null, 0, null); methodVisitor.visitInsn(Opcodes.RETURN); /* * declare the parameters */ final Label l6 = new Label(); methodVisitor.visitLabel(l6); methodVisitor.visitLocalVariable("args", "[Ljava/lang/String;", null, l3, l6, 0); methodVisitor.visitLocalVariable("exampleProgram", "L" + classname + ";", null, l0, l6, 1); methodVisitor.visitLocalVariable("e", "Ljava/lang/Exception;", null, l5, l4, 2); /* * done */ methodVisitor.visitMaxs(2, 3); methodVisitor.visitEnd(); } catch (final Exception e) { throw new Exception("Exception in generateMain", e); } }
From source file:com.lucidtechnics.blackboard.TargetConstructor.java
License:Apache License
private static final byte[] createWrapperObjectByteArray(String _targetName, Class _class) { ClassWriter classWriter = new ClassWriter(true); FieldVisitor fieldVisitor;/* w ww . ja va 2 s . c o m*/ MethodVisitor methodVisitor; String superClassName = _class.getCanonicalName().replaceAll("\\.", "/"); String[] superClassNameParts = superClassName.split("/"); String simpleClassName = superClassNameParts[superClassNameParts.length - 1]; String blackboardSubClassName = "com/lucidtechnics/blackboard/wrapper/" + superClassName + "Wrapper"; classWriter.visit(Opcodes.V1_5, Opcodes.ACC_PUBLIC + Opcodes.ACC_SUPER, blackboardSubClassName, null, superClassName, new String[] { "com/lucidtechnics/blackboard/Target" }); classWriter.visitSource(simpleClassName, null); { fieldVisitor = classWriter.visitField(Opcodes.ACC_PRIVATE, "blackboardObject", "Ljava/lang/Object;", null, null); fieldVisitor.visitEnd(); } { fieldVisitor = classWriter.visitField(Opcodes.ACC_PRIVATE, "intercepter", "Lcom/lucidtechnics/blackboard/Intercepter;", null, null); fieldVisitor.visitEnd(); } { methodVisitor = classWriter.visitMethod(Opcodes.ACC_PUBLIC, "getBlackboardObject", "()Ljava/lang/Object;", null, null); methodVisitor.visitCode(); methodVisitor.visitVarInsn(Opcodes.ALOAD, 0); methodVisitor.visitFieldInsn(Opcodes.GETFIELD, blackboardSubClassName, "blackboardObject", "Ljava/lang/Object;"); methodVisitor.visitInsn(Opcodes.ARETURN); methodVisitor.visitMaxs(0, 0); methodVisitor.visitEnd(); } { methodVisitor = classWriter.visitMethod(Opcodes.ACC_PUBLIC, "getIntercepter", "()Lcom/lucidtechnics/blackboard/Intercepter;", null, null); methodVisitor.visitCode(); methodVisitor.visitVarInsn(Opcodes.ALOAD, 0); methodVisitor.visitFieldInsn(Opcodes.GETFIELD, blackboardSubClassName, "intercepter", "Lcom/lucidtechnics/blackboard/Intercepter;"); methodVisitor.visitInsn(Opcodes.ARETURN); methodVisitor.visitMaxs(0, 0); methodVisitor.visitEnd(); } { methodVisitor = classWriter.visitMethod(Opcodes.ACC_PUBLIC, "setBlackboardObject", "(Ljava/lang/Object;)V", null, null); methodVisitor.visitCode(); methodVisitor.visitVarInsn(Opcodes.ALOAD, 0); methodVisitor.visitVarInsn(Opcodes.ALOAD, 1); methodVisitor.visitFieldInsn(Opcodes.PUTFIELD, blackboardSubClassName, "blackboardObject", "Ljava/lang/Object;"); methodVisitor.visitInsn(Opcodes.RETURN); methodVisitor.visitMaxs(0, 0); methodVisitor.visitEnd(); } { methodVisitor = classWriter.visitMethod(Opcodes.ACC_PUBLIC, "setIntercepter", "(Lcom/lucidtechnics/blackboard/Intercepter;)V", null, null); methodVisitor.visitCode(); methodVisitor.visitVarInsn(Opcodes.ALOAD, 0); methodVisitor.visitVarInsn(Opcodes.ALOAD, 1); methodVisitor.visitFieldInsn(Opcodes.PUTFIELD, blackboardSubClassName, "intercepter", "Lcom/lucidtechnics/blackboard/Intercepter;"); methodVisitor.visitInsn(Opcodes.RETURN); methodVisitor.visitMaxs(0, 0); methodVisitor.visitEnd(); } { methodVisitor = classWriter.visitMethod(Opcodes.ACC_PUBLIC, "<init>", "()V", null, null); methodVisitor.visitCode(); methodVisitor.visitVarInsn(Opcodes.ALOAD, 0); methodVisitor.visitMethodInsn(Opcodes.INVOKESPECIAL, superClassName, "<init>", "()V"); methodVisitor.visitInsn(Opcodes.RETURN); methodVisitor.visitMaxs(0, 0); methodVisitor.visitEnd(); } List mutatorMethodList = findMutatorMethods(_class); Iterator mutatorMethods = mutatorMethodList.iterator(); while (mutatorMethods.hasNext() == true) { Method method = (Method) mutatorMethods.next(); MethodInfo methodInfo = (MethodInfo) MethodInfoTransformer.getInstance().transform(method); Signature signature = methodInfo.getSignature(); String methodName = signature.getName(); String parameterType = signature.getArgumentTypes()[0].getDescriptor(); String returnType = signature.getReturnType().getDescriptor(); String[] exceptionTypeArray = createExceptionTypeArray(methodInfo.getExceptionTypes()); { methodVisitor = classWriter.visitMethod(Opcodes.ACC_PUBLIC, methodName, "(" + parameterType + ")" + returnType, null, exceptionTypeArray); methodVisitor.visitVarInsn(Opcodes.ALOAD, 0); methodVisitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, blackboardSubClassName, "getIntercepter", "()Lcom/lucidtechnics/blackboard/Intercepter;"); Label l1 = new Label(); methodVisitor.visitJumpInsn(Opcodes.IFNULL, l1); methodVisitor.visitCode(); methodVisitor.visitVarInsn(Opcodes.ALOAD, 0); methodVisitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, blackboardSubClassName, "getIntercepter", "()Lcom/lucidtechnics/blackboard/Intercepter;"); methodVisitor.visitLdcInsn(superClassName); methodVisitor.visitLdcInsn(blackboardSubClassName); methodVisitor.visitLdcInsn(methodName); methodVisitor.visitLdcInsn(_targetName); methodVisitor.visitVarInsn(Opcodes.ALOAD, 0); int tempOpCode = getLoadOpcode(parameterType); methodVisitor.visitVarInsn(tempOpCode, 1); if (tempOpCode == Opcodes.ALOAD) { //this is an object. methodVisitor.visitMethodInsn(Opcodes.INVOKEINTERFACE, "com/lucidtechnics/blackboard/Intercepter", "monitor", "(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/Object;Ljava/lang/Object;)V"); } else { //it is a primitive. methodVisitor.visitMethodInsn(Opcodes.INVOKEINTERFACE, "com/lucidtechnics/blackboard/Intercepter", "monitor", "(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/Object;" + parameterType + ")V"); } methodVisitor.visitVarInsn(Opcodes.ALOAD, 0); methodVisitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, blackboardSubClassName, "getBlackboardObject", "()Ljava/lang/Object;"); methodVisitor.visitTypeInsn(Opcodes.CHECKCAST, superClassName); methodVisitor.visitVarInsn(getLoadOpcode(parameterType), 1); methodVisitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, superClassName, methodName, "(" + parameterType + ")" + returnType); methodVisitor.visitLabel(l1); methodVisitor.visitInsn(getReturnOpcode(returnType)); methodVisitor.visitMaxs(0, 0); methodVisitor.visitEnd(); } } List otherPublicMethodList = findOtherPublicMethods(_class); Iterator otherPublicMethods = otherPublicMethodList.iterator(); while (otherPublicMethods.hasNext() == true) { Method method = (Method) otherPublicMethods.next(); MethodInfo methodInfo = (MethodInfo) MethodInfoTransformer.getInstance().transform(method); Signature signature = methodInfo.getSignature(); String methodName = signature.getName(); String parameterTypes = constructParameterTypes(signature.getArgumentTypes()); String returnType = signature.getReturnType().getDescriptor(); String[] exceptionTypeArray = createExceptionTypeArray(methodInfo.getExceptionTypes()); if (logger.isDebugEnabled() == true) { logger.debug("Processing method: " + methodName); } if (logger.isDebugEnabled() == true) { logger.debug("Parameter types are: " + parameterTypes); } if ("toString".equalsIgnoreCase(methodName) == false) { methodVisitor = classWriter.visitMethod(Opcodes.ACC_PUBLIC, methodName, "(" + parameterTypes + ")" + returnType, null, exceptionTypeArray); methodVisitor.visitCode(); methodVisitor.visitVarInsn(Opcodes.ALOAD, 0); methodVisitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, blackboardSubClassName, "getBlackboardObject", "()Ljava/lang/Object;"); methodVisitor.visitTypeInsn(Opcodes.CHECKCAST, superClassName); methodVisitor.visitVarInsn(Opcodes.ASTORE, signature.getArgumentTypes().length + 1); methodVisitor.visitVarInsn(Opcodes.ALOAD, signature.getArgumentTypes().length + 1); loadParameters(methodVisitor, signature.getArgumentTypes()); methodVisitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, superClassName, methodName, "(" + parameterTypes + ")" + returnType); methodVisitor.visitInsn(getReturnOpcode(returnType)); methodVisitor.visitMaxs(0, 0); methodVisitor.visitEnd(); } } List protectedMethodList = findProtectedMethods(_class); Iterator protectedMethods = protectedMethodList.iterator(); while (protectedMethods.hasNext() == true) { Method method = (Method) protectedMethods.next(); MethodInfo methodInfo = (MethodInfo) MethodInfoTransformer.getInstance().transform(method); Signature signature = methodInfo.getSignature(); String methodName = signature.getName(); String parameterTypes = constructParameterTypes(signature.getArgumentTypes()); String returnType = signature.getReturnType().getDescriptor(); String[] exceptionTypeArray = createExceptionTypeArray(methodInfo.getExceptionTypes()); if (logger.isDebugEnabled() == true) { logger.debug("Processing method: " + methodName + " and parameter types are: " + parameterTypes); } { methodVisitor = classWriter.visitMethod(Opcodes.ACC_PROTECTED, methodName, "(" + parameterTypes + ")" + returnType, null, exceptionTypeArray); methodVisitor.visitCode(); methodVisitor.visitTypeInsn(Opcodes.NEW, "com/lucidtechnics/blackboard/BlackboardException"); methodVisitor.visitInsn(Opcodes.DUP); methodVisitor.visitLdcInsn("Unable to access protected methods on Blackboard object"); methodVisitor.visitMethodInsn(Opcodes.INVOKESPECIAL, "com/lucidtechnics/blackboard/BlackboardException", "<init>", "(Ljava/lang/String;)V"); methodVisitor.visitInsn(Opcodes.ATHROW); methodVisitor.visitMaxs(0, 0); methodVisitor.visitEnd(); } } { methodVisitor = classWriter.visitMethod(Opcodes.ACC_PUBLIC, "toString", "()Ljava/lang/String;", null, null); methodVisitor.visitCode(); methodVisitor.visitVarInsn(Opcodes.ALOAD, 0); methodVisitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, blackboardSubClassName, "getBlackboardObject", "()Ljava/lang/Object;"); methodVisitor.visitMethodInsn(Opcodes.INVOKESTATIC, "com/lucidtechnics/blackboard/util/Utility", "toString", "(Ljava/lang/Object;)Ljava/lang/String;"); methodVisitor.visitInsn(getReturnOpcode("Ljava/lang/String;")); methodVisitor.visitMaxs(0, 0); methodVisitor.visitEnd(); } classWriter.visitEnd(); if (logger.isDebugEnabled() == true) { logger.debug("Finished creating new class: " + blackboardSubClassName + " for target class: " + superClassName + "."); } return classWriter.toByteArray(); }