jdk.internal.org.objectweb.asm.MethodVisitor#visitTypeInsn

Source File: Proxy.java From totallylazy with Apache License 2.0

6 votes

private static void loadArguments(MethodVisitor mv, Method method) {
    int arguments = method.getParameterCount();
    mv.visitLdcInsn(arguments);
    mv.visitTypeInsn(ANEWARRAY, "java/lang/Object");

    Class<?>[] parameterTypes = method.getParameterTypes();
    for (int i = 0, local = 0; i < parameterTypes.length; i++) {
        Class<?> parameterType = parameterTypes[i];
        local++;
        mv.visitInsn(DUP);
        mv.visitLdcInsn(i);
        mv.visitVarInsn(Asm.load(parameterType), local);
        if (parameterType.isPrimitive() && !parameterType.equals(void.class)) {
            String internalName = Type.getInternalName(Reflection.box(parameterType));
            mv.visitMethodInsn(INVOKESTATIC, internalName, "valueOf", format("(%s)L%s;", Type.getDescriptor(parameterType), internalName), false);
        }
        if (parameterType.equals(double.class) || parameterType.equals(long.class)) local++;
        mv.visitInsn(AASTORE);
    }
}

Source File: Proxy.java From totallylazy with Apache License 2.0

5 votes

private static void returnResult(MethodVisitor mv, Method method) {
    Class<?> returnType = method.getReturnType();
    if (returnType.equals(void.class)) {
        mv.visitInsn(POP);
    } else if (returnType.isPrimitive()) {
        String internalName = Type.getInternalName(Reflection.box(returnType));
        mv.visitTypeInsn(CHECKCAST, internalName);
        mv.visitMethodInsn(INVOKEVIRTUAL, internalName, format("%sValue", returnType.getSimpleName()), format("()%s", Type.getDescriptor(returnType)), false);
    } else {
        mv.visitTypeInsn(CHECKCAST, Type.getInternalName(returnType));
    }
    mv.visitInsn(Asm.returns(returnType));
}

Source File: SystemModulesPlugin.java From openjdk-jdk9 with GNU General Public License v2.0

5 votes

/**
 * Generate bytecode for SystemModules::hashes method
 */
private void genHashesMethod() {
    MethodVisitor hmv =
        cw.visitMethod(ACC_PUBLIC + ACC_STATIC,
                       "hashes",
                       "()" + MODULE_HASHES_ARRAY_SIGNATURE,
                       "()" + MODULE_HASHES_ARRAY_SIGNATURE,
                       null);
    hmv.visitCode();
    pushInt(hmv, moduleInfos.size());
    hmv.visitTypeInsn(ANEWARRAY, "jdk/internal/module/ModuleHashes");
    hmv.visitVarInsn(ASTORE, MH_VAR);

    for (int index = 0; index < moduleInfos.size(); index++) {
        ModuleInfo minfo = moduleInfos.get(index);
        if (minfo.recordedHashes() != null) {
            new ModuleHashesBuilder(minfo.recordedHashes(),
                                    index,
                                    hmv).build();
        }
    }

    hmv.visitVarInsn(ALOAD, MH_VAR);
    hmv.visitInsn(ARETURN);
    hmv.visitMaxs(0, 0);
    hmv.visitEnd();
}

Source File: RedefineRunningMethodsWithResolutionErrors.java From hottub with GNU General Public License v2.0

5 votes

private static void createThrowRuntimeExceptionCode(MethodVisitor mv, String msg) {
    mv.visitTypeInsn(NEW, "java/lang/RuntimeException");
    mv.visitInsn(DUP);
    mv.visitLdcInsn(msg);
    mv.visitMethodInsn(INVOKESPECIAL, "java/lang/RuntimeException", "<init>", "(Ljava/lang/String;)V");
    mv.visitInsn(ATHROW);
}

Source File: TestANewArray.java From openjdk-jdk9 with GNU General Public License v2.0

5 votes

public static byte[] dumpClassFile(int cfv, int testDimension264, String arrayDim) throws Exception {
    ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES);
    MethodVisitor mv;

    classCName = "classCName_" + cfv + "_" + testDimension264;

    cw.visit(cfv, ACC_PUBLIC + ACC_SUPER, classCName, 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();
    }
    {   // classCName main method
        mv = cw.visitMethod(ACC_PUBLIC + ACC_STATIC, "main", "([Ljava/lang/String;)V", null, null);
        mv.visitCode();
        mv.visitIntInsn(BIPUSH, 1);
        mv.visitTypeInsn(ANEWARRAY, arrayDim); // Test ANEWARRAY bytecode with various dimensions
        mv.visitInsn(RETURN);
        mv.visitMaxs(2, 2);
        mv.visitEnd();
    }
    cw.visitEnd();
    return cw.toByteArray();
}

Source File: SystemModulesPlugin.java From openjdk-jdk9 with GNU General Public License v2.0

5 votes

/**
 * Generate bytecode for SystemModules::methodResoultions method
 */
private void genModuleResolutionsMethod() {
    MethodVisitor mresmv =
        cw.visitMethod(ACC_PUBLIC+ACC_STATIC,
                       "moduleResolutions",
                       "()" + MODULE_RESOLUTIONS_ARRAY_SIGNATURE,
                       "()" + MODULE_RESOLUTIONS_ARRAY_SIGNATURE,
                       null);
    mresmv.visitCode();
    pushInt(mresmv, moduleInfos.size());
    mresmv.visitTypeInsn(ANEWARRAY, MODULE_RESOLUTION_CLASSNAME);
    mresmv.visitVarInsn(ASTORE, 0);

    for (int index=0; index < moduleInfos.size(); index++) {
        ModuleInfo minfo = moduleInfos.get(index);
        if (minfo.moduleResolution() != null) {
            mresmv.visitVarInsn(ALOAD, 0);
            pushInt(mresmv, index);
            mresmv.visitTypeInsn(NEW, MODULE_RESOLUTION_CLASSNAME);
            mresmv.visitInsn(DUP);
            mresmv.visitLdcInsn(minfo.moduleResolution().value());
            mresmv.visitMethodInsn(INVOKESPECIAL,
                                   MODULE_RESOLUTION_CLASSNAME,
                                   "<init>",
                                   "(I)V", false);
            mresmv.visitInsn(AASTORE);
        }
    }
    mresmv.visitVarInsn(ALOAD, 0);
    mresmv.visitInsn(ARETURN);
    mresmv.visitMaxs(0, 0);
    mresmv.visitEnd();
}

Source File: AddressVarHandleGenerator.java From Bytecoder with Apache License 2.0

5 votes

void addCarrierAccessor(BinderClassWriter cw) {
    MethodVisitor mv = cw.visitMethod(ACC_FINAL, "carrier", "()Ljava/lang/Class;", null, null);
    mv.visitCode();
    mv.visitLdcInsn(cw.makeConstantPoolPatch(carrier));
    mv.visitTypeInsn(CHECKCAST, Type.getInternalName(Class.class));
    mv.visitInsn(ARETURN);
    mv.visitMaxs(0, 0);
    mv.visitEnd();
}

Source File: TestConcreteClassWithAbstractMethod.java From openjdk-jdk8u with GNU General Public License v2.0

4 votes

public static byte[] dumpT3() {
    ClassWriter cw = new ClassWriter(0);
    MethodVisitor mv;

    cw.visit(52, ACC_PUBLIC + ACC_SUPER, "p1/T3", null, "p1/T2", null);

    {
        mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKESPECIAL, "p1/T2", "<init>", "()V", false);
        mv.visitInsn(RETURN);
        mv.visitMaxs(1, 1);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "m", "()I", null, null);
        mv.visitCode();
        mv.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;");
        mv.visitLdcInsn("p1/T3.m()");
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/io/PrintStream", "print", "(Ljava/lang/String;)V", false);
        mv.visitIntInsn(BIPUSH, 2);
        mv.visitInsn(IRETURN);
        mv.visitMaxs(2, 1);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC + ACC_STATIC, "test", "()I", null, null);
        mv.visitCode();
        mv.visitTypeInsn(NEW, "p1/T3");
        mv.visitInsn(DUP);
        mv.visitMethodInsn(INVOKESPECIAL, "p1/T3", "<init>", "()V", false);
        mv.visitMethodInsn(INVOKEVIRTUAL, "p1/T2", "m", "()I", false);
        mv.visitInsn(IRETURN);
        mv.visitMaxs(3, 2);
        mv.visitEnd();
    }
    cw.visitEnd();

    return cw.toByteArray();
}

Source File: ArrayType.java From nashorn with GNU General Public License v2.0

4 votes

@Override
public Type newarray(final MethodVisitor method) {
    method.visitTypeInsn(ANEWARRAY, getElementType().getInternalName());
    return this;
}

Source File: TestConcreteClassWithAbstractMethod.java From openjdk-jdk8u-backup with GNU General Public License v2.0

4 votes

public static byte[] dumpT3() {
    ClassWriter cw = new ClassWriter(0);
    MethodVisitor mv;

    cw.visit(52, ACC_PUBLIC + ACC_SUPER, "p1/T3", null, "p1/T2", null);

    {
        mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKESPECIAL, "p1/T2", "<init>", "()V", false);
        mv.visitInsn(RETURN);
        mv.visitMaxs(1, 1);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "m", "()I", null, null);
        mv.visitCode();
        mv.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;");
        mv.visitLdcInsn("p1/T3.m()");
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/io/PrintStream", "print", "(Ljava/lang/String;)V", false);
        mv.visitIntInsn(BIPUSH, 2);
        mv.visitInsn(IRETURN);
        mv.visitMaxs(2, 1);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC + ACC_STATIC, "test", "()I", null, null);
        mv.visitCode();
        mv.visitTypeInsn(NEW, "p1/T3");
        mv.visitInsn(DUP);
        mv.visitMethodInsn(INVOKESPECIAL, "p1/T3", "<init>", "()V", false);
        mv.visitMethodInsn(INVOKEVIRTUAL, "p1/T2", "m", "()I", false);
        mv.visitInsn(IRETURN);
        mv.visitMaxs(3, 2);
        mv.visitEnd();
    }
    cw.visitEnd();

    return cw.toByteArray();
}

Source File: ObjectType.java From hottub with GNU General Public License v2.0

4 votes

@Override
public Type convert(final MethodVisitor method, final Type to) {
    final boolean toString = to.isString();
    if (!toString) {
        if (to.isArray()) {
            final Type elemType = ((ArrayType)to).getElementType();

            //note that if this an array, things won't work. see {link @ArrayType} subclass.
            //we also have the unpleasant case of NativeArray which looks like an Object, but is
            //an array to the type system. This is treated specially at the known load points

            if (elemType.isString()) {
                method.visitTypeInsn(CHECKCAST, CompilerConstants.className(String[].class));
            } else if (elemType.isNumber()) {
                method.visitTypeInsn(CHECKCAST, CompilerConstants.className(double[].class));
            } else if (elemType.isLong()) {
                method.visitTypeInsn(CHECKCAST, CompilerConstants.className(long[].class));
            } else if (elemType.isInteger()) {
                method.visitTypeInsn(CHECKCAST, CompilerConstants.className(int[].class));
            } else {
                method.visitTypeInsn(CHECKCAST, CompilerConstants.className(Object[].class));
            }
            return to;
        } else if (to.isObject()) {
            final Class<?> toClass = to.getTypeClass();
            if(!toClass.isAssignableFrom(getTypeClass())) {
                method.visitTypeInsn(CHECKCAST, CompilerConstants.className(toClass));
            }
            return to;
        }
    } else if (isString()) {
        return to;
    }

    if (to.isInteger()) {
        invokestatic(method, JSType.TO_INT32);
    } else if (to.isNumber()) {
        invokestatic(method, JSType.TO_NUMBER);
    } else if (to.isLong()) {
        invokestatic(method, JSType.TO_LONG);
    } else if (to.isBoolean()) {
        invokestatic(method, JSType.TO_BOOLEAN);
    } else if (to.isString()) {
        invokestatic(method, JSType.TO_PRIMITIVE_TO_STRING);
    } else if (to.isCharSequence()) {
        invokestatic(method, JSType.TO_PRIMITIVE_TO_CHARSEQUENCE);
    } else {
        throw new UnsupportedOperationException("Illegal conversion " + this + " -> " + to + " " + isString() + " " + toString);
    }

    return to;
}

Source File: ArrayType.java From openjdk-jdk8u with GNU General Public License v2.0

4 votes

@Override
public Type newarray(final MethodVisitor method) {
    method.visitTypeInsn(ANEWARRAY, getElementType().getInternalName());
    return this;
}

Source File: TypeInsnNode.java From hottub with GNU General Public License v2.0

4 votes

@Override
public void accept(final MethodVisitor mv) {
    mv.visitTypeInsn(opcode, desc);
    acceptAnnotations(mv);
}

Source File: TypeInsnNode.java From nashorn with GNU General Public License v2.0

4 votes

@Override
public void accept(final MethodVisitor mv) {
    mv.visitTypeInsn(opcode, desc);
}

Source File: TypeInsnNode.java From jdk8u-jdk with GNU General Public License v2.0

4 votes

@Override
public void accept(final MethodVisitor mv) {
    mv.visitTypeInsn(opcode, desc);
    acceptAnnotations(mv);
}

Source File: TestConcreteClassWithAbstractMethod.java From openjdk-jdk9 with GNU General Public License v2.0

4 votes

public static byte[] dumpT3() {
    ClassWriter cw = new ClassWriter(0);
    MethodVisitor mv;

    cw.visit(52, ACC_PUBLIC + ACC_SUPER, "p1/T3", null, "p1/T2", null);

    {
        mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKESPECIAL, "p1/T2", "<init>", "()V", false);
        mv.visitInsn(RETURN);
        mv.visitMaxs(1, 1);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "m", "()I", null, null);
        mv.visitCode();
        mv.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;");
        mv.visitLdcInsn("p1/T3.m()");
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/io/PrintStream", "print", "(Ljava/lang/String;)V", false);
        mv.visitIntInsn(BIPUSH, 2);
        mv.visitInsn(IRETURN);
        mv.visitMaxs(2, 1);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC + ACC_STATIC, "test", "()I", null, null);
        mv.visitCode();
        mv.visitTypeInsn(NEW, "p1/T3");
        mv.visitInsn(DUP);
        mv.visitMethodInsn(INVOKESPECIAL, "p1/T3", "<init>", "()V", false);
        mv.visitMethodInsn(INVOKEVIRTUAL, "p1/T2", "m", "()I", false);
        mv.visitInsn(IRETURN);
        mv.visitMaxs(3, 2);
        mv.visitEnd();
    }
    cw.visitEnd();

    return cw.toByteArray();
}

Source File: ArrayType.java From hottub with GNU General Public License v2.0

4 votes

@Override
public Type newarray(final MethodVisitor method) {
    method.visitTypeInsn(ANEWARRAY, getElementType().getInternalName());
    return this;
}

Source File: ProxyGenerator.java From Bytecoder with Apache License 2.0

4 votes

/**
 * Generate this method, including the code and exception table entry.
 */
private void generateMethod(ClassWriter cw, String className) {
    MethodType mt = MethodType.methodType(returnType, parameterTypes);
    String desc = mt.toMethodDescriptorString();
    MethodVisitor mv = cw.visitMethod(ACC_PUBLIC | ACC_FINAL,
            method.getName(), desc, null,
            typeNames(Arrays.asList(exceptionTypes)));

    int[] parameterSlot = new int[parameterTypes.length];
    int nextSlot = 1;
    for (int i = 0; i < parameterSlot.length; i++) {
        parameterSlot[i] = nextSlot;
        nextSlot += getWordsPerType(parameterTypes[i]);
    }

    mv.visitCode();
    Label L_startBlock = new Label();
    Label L_endBlock = new Label();
    Label L_RuntimeHandler = new Label();
    Label L_ThrowableHandler = new Label();

    List<Class<?>> catchList = computeUniqueCatchList(exceptionTypes);
    if (catchList.size() > 0) {
        for (Class<?> ex : catchList) {
            mv.visitTryCatchBlock(L_startBlock, L_endBlock, L_RuntimeHandler,
                    dotToSlash(ex.getName()));
        }

        mv.visitTryCatchBlock(L_startBlock, L_endBlock, L_ThrowableHandler,
                JL_THROWABLE);
    }
    mv.visitLabel(L_startBlock);

    mv.visitVarInsn(ALOAD, 0);
    mv.visitFieldInsn(GETFIELD, JLR_PROXY, handlerFieldName,
            LJLR_INVOCATION_HANDLER);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitFieldInsn(GETSTATIC, dotToSlash(className), methodFieldName,
            LJLR_METHOD);

    if (parameterTypes.length > 0) {
        // Create an array and fill with the parameters converting primitives to wrappers
        emitIconstInsn(mv, parameterTypes.length);
        mv.visitTypeInsn(Opcodes.ANEWARRAY, JL_OBJECT);
        for (int i = 0; i < parameterTypes.length; i++) {
            mv.visitInsn(DUP);
            emitIconstInsn(mv, i);
            codeWrapArgument(mv, parameterTypes[i], parameterSlot[i]);
            mv.visitInsn(Opcodes.AASTORE);
        }
    } else {
        mv.visitInsn(Opcodes.ACONST_NULL);
    }

    mv.visitMethodInsn(INVOKEINTERFACE, JLR_INVOCATION_HANDLER,
            "invoke",
            "(Ljava/lang/Object;Ljava/lang/reflect/Method;" +
                    "[Ljava/lang/Object;)Ljava/lang/Object;", true);

    if (returnType == void.class) {
        mv.visitInsn(POP);
        mv.visitInsn(RETURN);
    } else {
        codeUnwrapReturnValue(mv, returnType);
    }

    mv.visitLabel(L_endBlock);

    // Generate exception handler
    mv.visitLabel(L_RuntimeHandler);
    mv.visitInsn(ATHROW);   // just rethrow the exception

    mv.visitLabel(L_ThrowableHandler);
    mv.visitVarInsn(ASTORE, 1);
    mv.visitTypeInsn(Opcodes.NEW, JLR_UNDECLARED_THROWABLE_EX);
    mv.visitInsn(DUP);
    mv.visitVarInsn(ALOAD, 1);
    mv.visitMethodInsn(INVOKESPECIAL, JLR_UNDECLARED_THROWABLE_EX,
            "<init>", "(Ljava/lang/Throwable;)V", false);
    mv.visitInsn(ATHROW);
    // Maxs computed by ClassWriter.COMPUTE_FRAMES, these arguments ignored
    mv.visitMaxs(-1, -1);
    mv.visitEnd();
}

Source File: TestConcreteClassWithAbstractMethod.java From hottub with GNU General Public License v2.0

4 votes

public static byte[] dumpT3() {
    ClassWriter cw = new ClassWriter(0);
    MethodVisitor mv;

    cw.visit(52, ACC_PUBLIC + ACC_SUPER, "p1/T3", null, "p1/T2", null);

    {
        mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKESPECIAL, "p1/T2", "<init>", "()V", false);
        mv.visitInsn(RETURN);
        mv.visitMaxs(1, 1);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "m", "()I", null, null);
        mv.visitCode();
        mv.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;");
        mv.visitLdcInsn("p1/T3.m()");
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/io/PrintStream", "print", "(Ljava/lang/String;)V", false);
        mv.visitIntInsn(BIPUSH, 2);
        mv.visitInsn(IRETURN);
        mv.visitMaxs(2, 1);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC + ACC_STATIC, "test", "()I", null, null);
        mv.visitCode();
        mv.visitTypeInsn(NEW, "p1/T3");
        mv.visitInsn(DUP);
        mv.visitMethodInsn(INVOKESPECIAL, "p1/T3", "<init>", "()V", false);
        mv.visitMethodInsn(INVOKEVIRTUAL, "p1/T2", "m", "()I", false);
        mv.visitInsn(IRETURN);
        mv.visitMaxs(3, 2);
        mv.visitEnd();
    }
    cw.visitEnd();

    return cw.toByteArray();
}

Source File: TypeInsnNode.java From jdk8u-jdk with GNU General Public License v2.0

4 votes

@Override
public void accept(final MethodVisitor mv) {
    mv.visitTypeInsn(opcode, desc);
    acceptAnnotations(mv);
}

Java Code Examples for jdk.internal.org.objectweb.asm.MethodVisitor#visitTypeInsn()