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

The following examples show how to use jdk.internal.org.objectweb.asm.MethodVisitor#visitFieldInsn() . These examples are extracted from open source projects. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
private static void emitPushFields(String types, String className, MethodVisitor mv) {
    for (int i = 0; i < types.length(); ++i) {
        char tc = types.charAt(i);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, className, makeFieldName(types, i), typeSig(tc));
    }
}
 
Example 2
private void buildConstructor() {
    MethodVisitor mv = classWriter.visitMethod(Opcodes.ACC_PRIVATE, METHOD_EVENT_HANDLER_CONSTRUCTOR.getName(), makeConstructorDescriptor(settingInfos), null, null);
    mv.visitVarInsn(Opcodes.ALOAD, 0); // this
    mv.visitVarInsn(Opcodes.ILOAD, 1); // registered
    mv.visitVarInsn(Opcodes.ALOAD, 2); // event type
    mv.visitVarInsn(Opcodes.ALOAD, 3); // event control
    mv.visitMethodInsn(Opcodes.INVOKESPECIAL, Type.getInternalName(EventHandler.class), METHOD_EVENT_HANDLER_CONSTRUCTOR.getName(), METHOD_EVENT_HANDLER_CONSTRUCTOR.getDescriptor(), false);
    for (SettingInfo si : settingInfos) {
        mv.visitVarInsn(Opcodes.ALOAD, 0); // this
        mv.visitVarInsn(Opcodes.ALOAD, si.index + 4); // Setting Control
        mv.visitFieldInsn(Opcodes.PUTFIELD, internalClassName, si.fieldName, TYPE_SETTING_CONTROL.getDescriptor());
    }
    // initialized string field writers
    int fieldIndex = 0;
    for (FieldInfo field : fields) {
        if (field.isString()) {
            mv.visitVarInsn(Opcodes.ALOAD, 0);
            mv.visitVarInsn(Opcodes.ALOAD, 0);
            mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, Type.getInternalName(EventHandler.class), "createStringFieldWriter", "()" + TYPE_STRING_POOL.getDescriptor(), false);
            mv.visitFieldInsn(Opcodes.PUTFIELD, internalClassName, FIELD_PREFIX_STRING_POOL + fieldIndex, TYPE_STRING_POOL.getDescriptor());
        }
        fieldIndex++;
    }
    mv.visitInsn(Opcodes.RETURN);
    mv.visitMaxs(0, 0);
    mv.visitEnd();
}
 
Example 3
public static byte[] dumpT1() {
    ClassWriter cw = new ClassWriter(0);
    MethodVisitor mv;

    cw.visit(52, ACC_PUBLIC | ACC_SUPER, "p1/T1", null, "java/lang/Object", null);
    {
        mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
        mv.visitInsn(RETURN);
        mv.visitMaxs(1, 1);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "m", "()I", null, null);
        mv.visitCode();
        mv.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;");
        mv.visitLdcInsn("p1/T1.m()");
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/io/PrintStream", "print", "(Ljava/lang/String;)V", false);
        mv.visitIntInsn(BIPUSH, 3);
        mv.visitInsn(IRETURN);
        mv.visitMaxs(2, 1);
        mv.visitEnd();
    }
    cw.visitEnd();

    return cw.toByteArray();
}
 
Example 4
Source Project: Java8CN   File: BoundMethodHandle.java    License: Apache License 2.0 5 votes vote down vote up
private static void emitPushFields(String types, String className, MethodVisitor mv) {
    for (int i = 0; i < types.length(); ++i) {
        char tc = types.charAt(i);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, className, makeFieldName(types, i), typeSig(tc));
    }
}
 
Example 5
static void generateTestClass(int dim, boolean good) throws Exception {
    String baseClassName = "MeetIncompatibleInterfaceArrays";
    if (good)
        baseClassName += "Good";
    String createName = "createI2" + (good ? "1" : "") + "Array";
    String a = "";
    for (int i = 0; i < dim; i++)
        a += "[";
    ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES);
    cw.visit(V1_8, ACC_PUBLIC, baseClassName + dim + "ASM", null, "java/lang/Object", null);
    MethodVisitor constr = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
    constr.visitCode();
    constr.visitVarInsn(ALOAD, 0);
    constr.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
    constr.visitInsn(RETURN);
    constr.visitMaxs(0, 0);
    constr.visitEnd();
    MethodVisitor run = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "run",
            "()" + a + "LTestMeetIncompatibleInterfaceArrays$I1;", null, null);
    run.visitCode();
    if (dim == 4) {
        run.visitMethodInsn(INVOKESTATIC, "TestMeetIncompatibleInterfaceArrays$Helper", createName + 3,
                "()" + "[[[" + "LTestMeetIncompatibleInterfaceArrays$I2;", false);
    } else {
        run.visitMethodInsn(INVOKESTATIC, "TestMeetIncompatibleInterfaceArrays$Helper", createName + dim,
                "()" + a + "LTestMeetIncompatibleInterfaceArrays$I2;", false);
    }
    run.visitInsn(ARETURN);
    run.visitMaxs(0, 0);
    run.visitEnd();
    MethodVisitor test = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "test", "()V", null, null);
    test.visitCode();
    test.visitMethodInsn(INVOKESTATIC, baseClassName + dim + "ASM", "run",
            "()" + a + "LTestMeetIncompatibleInterfaceArrays$I1;", false);
    test.visitVarInsn(ASTORE, 0);
    if (dim > 0) {
        test.visitVarInsn(ALOAD, 0);
        for (int i = 1; i <= dim; i++) {
            test.visitInsn(ICONST_0);
            test.visitInsn(AALOAD);
        }
        test.visitVarInsn(ASTORE, 1);
    }
    test.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;");
    test.visitVarInsn(ALOAD, dim > 0 ? 1 : 0);
    test.visitMethodInsn(INVOKEINTERFACE, "TestMeetIncompatibleInterfaceArrays$I1", "getName",
            "()Ljava/lang/String;", true);
    test.visitMethodInsn(INVOKEVIRTUAL, "java/io/PrintStream", "println", "(Ljava/lang/Object;)V", false);
    test.visitInsn(RETURN);
    test.visitMaxs(0, 0);
    test.visitEnd();

    // Get the bytes of the class..
    byte[] b = cw.toByteArray();
    // ..and write them into a class file (for debugging)
    FileOutputStream fos = new FileOutputStream(PATH + baseClassName + dim + "ASM.class");
    fos.write(b);
    fos.close();

}
 
Example 6
@Override
public void accept(final MethodVisitor cv) {
    cv.visitFieldInsn(opcode, owner, name, desc);
}
 
Example 7
@Override
public Type loadEmpty(final MethodVisitor method) {
    method.visitFieldInsn(GETSTATIC, className(ScriptRuntime.class), "EMPTY", typeDescriptor(Undefined.class));
    return OBJECT;
}
 
Example 8
public static byte[] dumpP2C() {

        ClassWriter cw = new ClassWriter(0);
        MethodVisitor mv;

        cw.visit(V1_6, ACC_PUBLIC + ACC_SUPER, "P2/C", null, "P1/B", null);

        {
            mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
            mv.visitCode();
            mv.visitVarInsn(ALOAD, 0);
            mv.visitMethodInsn(INVOKESPECIAL, "P1/B", "<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("P2/C.m");
            mv.visitMethodInsn(INVOKEVIRTUAL, "java/io/PrintStream", "println", "(Ljava/lang/String;)V", false);
            mv.visitIntInsn(BIPUSH, 3);
            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, "P2/C");
            mv.visitInsn(DUP);
            mv.visitMethodInsn(INVOKESPECIAL, "P2/C", "<init>", "()V", false);
            mv.visitMethodInsn(INVOKEVIRTUAL, "P1/A", "m", "()I", false);
            mv.visitInsn(IRETURN);
            mv.visitMaxs(3, 2);
            mv.visitEnd();
        }

        cw.visitEnd();

        return cw.toByteArray();
    }
 
Example 9
static void generateTestClass(int dim, boolean good) throws Exception {
    String baseClassName = "MeetIncompatibleInterfaceArrays";
    if (good)
        baseClassName += "Good";
    String createName = "createI2" + (good ? "1" : "") + "Array";
    String a = "";
    for (int i = 0; i < dim; i++)
        a += "[";
    ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES);
    cw.visit(V1_8, ACC_PUBLIC, baseClassName + dim + "ASM", null, "java/lang/Object", null);
    MethodVisitor constr = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
    constr.visitCode();
    constr.visitVarInsn(ALOAD, 0);
    constr.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
    constr.visitInsn(RETURN);
    constr.visitMaxs(0, 0);
    constr.visitEnd();
    MethodVisitor run = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "run",
            "()" + a + "LTestMeetIncompatibleInterfaceArrays$I1;", null, null);
    run.visitCode();
    if (dim == 4) {
        run.visitMethodInsn(INVOKESTATIC, "TestMeetIncompatibleInterfaceArrays$Helper", createName + 3,
                "()" + "[[[" + "LTestMeetIncompatibleInterfaceArrays$I2;", false);
    } else {
        run.visitMethodInsn(INVOKESTATIC, "TestMeetIncompatibleInterfaceArrays$Helper", createName + dim,
                "()" + a + "LTestMeetIncompatibleInterfaceArrays$I2;", false);
    }
    run.visitInsn(ARETURN);
    run.visitMaxs(0, 0);
    run.visitEnd();
    MethodVisitor test = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "test", "()V", null, null);
    test.visitCode();
    test.visitMethodInsn(INVOKESTATIC, baseClassName + dim + "ASM", "run",
            "()" + a + "LTestMeetIncompatibleInterfaceArrays$I1;", false);
    test.visitVarInsn(ASTORE, 0);
    if (dim > 0) {
        test.visitVarInsn(ALOAD, 0);
        for (int i = 1; i <= dim; i++) {
            test.visitInsn(ICONST_0);
            test.visitInsn(AALOAD);
        }
        test.visitVarInsn(ASTORE, 1);
    }
    test.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;");
    test.visitVarInsn(ALOAD, dim > 0 ? 1 : 0);
    test.visitMethodInsn(INVOKEINTERFACE, "TestMeetIncompatibleInterfaceArrays$I1", "getName",
            "()Ljava/lang/String;", true);
    test.visitMethodInsn(INVOKEVIRTUAL, "java/io/PrintStream", "println", "(Ljava/lang/Object;)V", false);
    test.visitInsn(RETURN);
    test.visitMaxs(0, 0);
    test.visitEnd();

    // Get the bytes of the class..
    byte[] b = cw.toByteArray();
    // ..and write them into a class file (for debugging)
    FileOutputStream fos = new FileOutputStream(PATH + baseClassName + dim + "ASM.class");
    fos.write(b);
    fos.close();

}
 
Example 10
@Override
public void accept(final MethodVisitor mv) {
    mv.visitFieldInsn(opcode, owner, name, desc);
    acceptAnnotations(mv);
}
 
Example 11
Source Project: nashorn   File: ObjectType.java    License: GNU General Public License v2.0 4 votes vote down vote up
@Override
public Type loadEmpty(final MethodVisitor method) {
    method.visitFieldInsn(GETSTATIC, className(ScriptRuntime.class), "EMPTY", typeDescriptor(Undefined.class));
    return OBJECT;
}
 
Example 12
@Override
protected Class<?> findClass(String name) throws ClassNotFoundException {
    if (name.equals(POISON_IMPL_NAME)) {
        ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS | ClassWriter.COMPUTE_FRAMES);

        cw.visit(Opcodes.V1_8, Opcodes.ACC_PUBLIC, POISON_IMPL_NAME.replace('.', '/'), null, Type.getInternalName(Pill.class), null);
        // constructor
        MethodVisitor constructor = cw.visitMethod(Opcodes.ACC_PUBLIC, "<init>", "()V", null, null);
        constructor.visitCode();
        constructor.visitVarInsn(Opcodes.ALOAD, 0);
        constructor.visitMethodInsn(Opcodes.INVOKESPECIAL, Type.getInternalName(Pill.class), "<init>", "()V", false);
        constructor.visitInsn(Opcodes.RETURN);
        constructor.visitMaxs(0, 0);
        constructor.visitEnd();

        MethodVisitor setList = cw.visitMethod(Opcodes.ACC_PUBLIC, "setField", "()V", null, null);
        setList.visitCode();
        setList.visitVarInsn(Opcodes.ALOAD, 0);
        setList.visitTypeInsn(Opcodes.NEW, Type.getInternalName(Object.class));
        setList.visitInsn(Opcodes.DUP);
        setList.visitMethodInsn(Opcodes.INVOKESPECIAL, Type.getInternalName(Object.class), "<init>", "()V", false);
        setList.visitFieldInsn(Opcodes.PUTFIELD, Type.getInternalName(Pill.class), "field", Type.getDescriptor(TestInterface.class));
        setList.visitInsn(Opcodes.RETURN);
        setList.visitMaxs(0, 0);
        setList.visitEnd();

        MethodVisitor setStaticList = cw.visitMethod(Opcodes.ACC_PUBLIC, "setStaticField", "()V", null, null);
        setStaticList.visitCode();
        setStaticList.visitTypeInsn(Opcodes.NEW, Type.getInternalName(Object.class));
        setStaticList.visitInsn(Opcodes.DUP);
        setStaticList.visitMethodInsn(Opcodes.INVOKESPECIAL, Type.getInternalName(Object.class), "<init>", "()V", false);
        setStaticList.visitFieldInsn(Opcodes.PUTSTATIC, Type.getInternalName(Pill.class), "staticField", Type.getDescriptor(TestInterface.class));
        setStaticList.visitInsn(Opcodes.RETURN);
        setStaticList.visitMaxs(0, 0);
        setStaticList.visitEnd();

        MethodVisitor callMe = cw.visitMethod(Opcodes.ACC_PUBLIC, "callMe", Type.getMethodDescriptor(Type.INT_TYPE, Type.getType(CallBack.class)), null, null);
        callMe.visitCode();
        callMe.visitVarInsn(Opcodes.ALOAD, 1);
        callMe.visitTypeInsn(Opcodes.NEW, Type.getInternalName(Object.class));
        callMe.visitInsn(Opcodes.DUP);
        callMe.visitMethodInsn(Opcodes.INVOKESPECIAL, Type.getInternalName(Object.class), "<init>", "()V", false);
        callMe.visitMethodInsn(Opcodes.INVOKEINTERFACE, Type.getInternalName(CallBack.class), "callBack", Type.getMethodDescriptor(Type.INT_TYPE, Type.getType(TestInterface.class)), true);
        callMe.visitInsn(Opcodes.IRETURN);
        callMe.visitMaxs(0, 0);
        callMe.visitEnd();

        MethodVisitor getList = cw.visitMethod(Opcodes.ACC_PUBLIC, "get", Type.getMethodDescriptor(Type.getType(TestInterface.class)), null, null);
        getList.visitCode();
        getList.visitTypeInsn(Opcodes.NEW, Type.getInternalName(Object.class));
        getList.visitInsn(Opcodes.DUP);
        getList.visitMethodInsn(Opcodes.INVOKESPECIAL, Type.getInternalName(Object.class), "<init>", "()V", false);
        getList.visitInsn(Opcodes.ARETURN);
        getList.visitMaxs(0, 0);
        getList.visitEnd();

        cw.visitEnd();

        byte[] bytes = cw.toByteArray();
        return defineClass(name, bytes, 0, bytes.length);
    }
    return super.findClass(name);
}
 
Example 13
@Override
public Type loadEmpty(final MethodVisitor method) {
    method.visitFieldInsn(GETSTATIC, className(ScriptRuntime.class), "EMPTY", typeDescriptor(Undefined.class));
    return UNDEFINED;
}
 
Example 14
@Override
public Type loadEmpty(final MethodVisitor method) {
    method.visitFieldInsn(GETSTATIC, className(ScriptRuntime.class), "EMPTY", typeDescriptor(Undefined.class));
    return UNDEFINED;
}
 
Example 15
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();
}
 
Example 16
@Override
public Type loadUndefined(final MethodVisitor method) {
    method.visitFieldInsn(GETSTATIC, className(ScriptRuntime.class), "UNDEFINED", typeDescriptor(Undefined.class));
    return UNDEFINED;
}
 
Example 17
/**
 * Loads an Enum field.
 */
void visitElement(T t, MethodVisitor mv) {
    mv.visitFieldInsn(GETSTATIC, className, t.toString(),
                      "L" + className + ";");
}
 
Example 18
Source Project: jdk8u60   File: ObjectType.java    License: GNU General Public License v2.0 4 votes vote down vote up
@Override
public Type loadUndefined(final MethodVisitor method) {
    method.visitFieldInsn(GETSTATIC, className(ScriptRuntime.class), "UNDEFINED", typeDescriptor(Undefined.class));
    return UNDEFINED;
}
 
Example 19
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();
}
 
Example 20
@Override
public void accept(final MethodVisitor mv) {
    mv.visitFieldInsn(opcode, owner, name, desc);
    acceptAnnotations(mv);
}