Examples of sun.invoke.util.Wrapper.wrapperType()

sun.invoke.util.Wrapper.wrapperType()

            if (dst.isPrimitive()) {
                // P->P must widen
                return Wrapper.forPrimitiveType(dst).isConvertibleFrom(sw);
            } else {
                // P->R must box and widen
                return dst.isAssignableFrom(sw.wrapperType());
            }
        } else if (dst.isPrimitive()) {
            // any value can be dropped
            if (dst == void.class)  return true;
            Wrapper dw = Wrapper.forPrimitiveType(dst);

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            // For example:
            //   Byte/Number/Comparable/Object -> dw:Byte -> byte.
            //   Character/Comparable/Object -> dw:Character -> char
            //   Boolean/Comparable/Object -> dw:Boolean -> boolean
            // This means that dw must be cast-compatible with src.
            if (src.isAssignableFrom(dw.wrapperType())) {
                return true;
            }
            // The above does not work if the source reference is strongly typed
            // to a wrapper whose primitive must be widened.  For example:
            //   Byte -> unbox:byte -> short/int/long/float/double

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     *
     * @param type primitive type class to box.
     */
    private void emitBoxing(Class<?> type) {
        Wrapper wrapper = Wrapper.forPrimitiveType(type);
        String owner = "java/lang/" + wrapper.wrapperType().getSimpleName();
        String name  = "valueOf";
        String desc  = "(" + wrapper.basicTypeChar() + ")L" + owner + ";";
        mv.visitMethodInsn(Opcodes.INVOKESTATIC, owner, name, desc);
    }

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     *
     * @param type wrapper type class to unbox.
     */
    private void emitUnboxing(Class<?> type) {
        Wrapper wrapper = Wrapper.forWrapperType(type);
        String owner = "java/lang/" + wrapper.wrapperType().getSimpleName();
        String name  = wrapper.primitiveSimpleName() + "Value";
        String desc  = "()" + wrapper.basicTypeChar();
        mv.visitTypeInsn(Opcodes.CHECKCAST, owner);
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, owner, name, desc);
    }

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            Class<?> dptype = dstType.parameterType(i);
            if (dptype.isPrimitive()) {
                Class<?> sptype = dstType.basicType().wrap().parameterType(i);
                Wrapper dstWrapper = Wrapper.forBasicType(dptype);
                Wrapper srcWrapper = dstWrapper.isSubwordOrInt() ? Wrapper.INT : dstWrapper;  // narrow subword from int
                emitUnboxing(srcWrapper.wrapperType());
                emitPrimCast(srcWrapper.basicTypeChar(), dstWrapper.basicTypeChar());
            }
        }


        // Invoke

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                if (dst.isPrimitive()) {
                    fn = ValueConversions.convertPrimitive(src, dst);
                } else {
                    Wrapper w = Wrapper.forPrimitiveType(src);
                    MethodHandle boxMethod = ValueConversions.box(w);
                    if (dst == w.wrapperType())
                        fn = boxMethod;
                    else
                        fn = boxMethod.asType(MethodType.methodType(dst, src));
                }
            } else {

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                }
            } else {
                if (dst.isPrimitive()) {
                    // Caller has boxed a primitive.  Unbox it for the target.
                    Wrapper w = Wrapper.forPrimitiveType(dst);
                    if (level == 0 || VerifyType.isNullConversion(src, w.wrapperType())) {
                        fn = ValueConversions.unbox(dst);
                    } else if (src == Object.class || !Wrapper.isWrapperType(src)) {
                        // Examples:  Object->int, Number->int, Comparable->int; Byte->int, Character->int
                        // must include additional conversions
                        // src must be examined at runtime, to detect Byte, Character, etc.

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        if (level == 0)  return !src.isPrimitive();
        assert(level >= 0 && level <= 2);
        // Levels 1 and 2 allow widening and/or narrowing conversions.
        // These are not supported directly by the JVM.
        // But if the input reference is monomorphic, we can do it.
        return dw.wrapperType() == src;
    }


    /** Factory method:  Unbox the given argument.
     *  Return null if this cannot be done.
     */

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            if (dst.isPrimitive()) {
                // P->P must widen
                return Wrapper.forPrimitiveType(dst).isConvertibleFrom(sw);
            } else {
                // P->R must box and widen
                return dst.isAssignableFrom(sw.wrapperType());
            }
        } else if (dst.isPrimitive()) {
            // any value can be dropped
            if (dst == void.class)  return true;
            Wrapper dw = Wrapper.forPrimitiveType(dst);

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            // For example:
            //   Byte/Number/Comparable/Object -> dw:Byte -> byte.
            //   Character/Comparable/Object -> dw:Character -> char
            //   Boolean/Comparable/Object -> dw:Boolean -> boolean
            // This means that dw must be cast-compatible with src.
            if (src.isAssignableFrom(dw.wrapperType())) {
                return true;
            }
            // The above does not work if the source reference is strongly typed
            // to a wrapper whose primitive must be widened.  For example:
            //   Byte -> unbox:byte -> short/int/long/float/double

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