Package sun.invoke.util

Examples of sun.invoke.util.Wrapper

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        return valueMatches(signatureReturn(sig), mh.type().returnType(), res);
    }
    private static boolean checkInt(Class<?> type, Object x) {
        assert(x instanceof Integer);
        if (type == int.class)  return true;
        Wrapper w = Wrapper.forBasicType(type);
        assert(w.isSubwordOrInt());
        Object x1 = Wrapper.INT.wrap(w.wrap(x));
        return x.equals(x1);
    }
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            MethodHandle fn = null;
            if (src.isPrimitive()) {
                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 {
                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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    private static String unboxingDescriptor(Wrapper w) {
        return "()" + w.basicTypeChar();
    }

    void boxIfTypePrimitive(Type t) {
        Wrapper w = FROM_TYPE_SORT[t.getSort()];
        if (w != null) {
            box(w);
        }
    }
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        }
        if (arg == Void.TYPE || target == Void.TYPE) {
            return;
        }
        if (arg.isPrimitive()) {
            Wrapper wArg = Wrapper.forPrimitiveType(arg);
            if (target.isPrimitive()) {
                // Both primitives: widening
                widen(wArg, Wrapper.forPrimitiveType(target));
            } else {
                // Primitive argument to reference target
                String dTarget = BytecodeDescriptor.unparse(target);
                Wrapper wPrimTarget = wrapperOrNullFromDescriptor(dTarget);
                if (wPrimTarget != null) {
                    // The target is a boxed primitive type, widen to get there before boxing
                    widen(wArg, wPrimTarget);
                    box(wPrimTarget);
                } else {
                    // Otherwise, box and cast
                    box(wArg);
                    cast(wrapperName(wArg), dTarget);
                }
            }
        } else {
            String dArg = BytecodeDescriptor.unparse(arg);
            String dSrc;
            if (functional.isPrimitive()) {
                dSrc = dArg;
            } else {
                // Cast to convert to possibly more specific type, and generate CCE for invalid arg
                dSrc = BytecodeDescriptor.unparse(functional);
                cast(dArg, dSrc);
            }
            String dTarget = BytecodeDescriptor.unparse(target);
            if (target.isPrimitive()) {
                Wrapper wTarget = toWrapper(dTarget);
                // Reference argument to primitive target
                Wrapper wps = wrapperOrNullFromDescriptor(dSrc);
                if (wps != null) {
                    if (wps.isSigned() || wps.isFloating()) {
                        // Boxed number to primitive
                        unbox(wrapperName(wps), wTarget);
                    } else {
                        // Character or Boolean
                        unbox(wrapperName(wps), wps);
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            return null;
        }
        // Pare it down to the simple class name
        String cname = desc.substring(WRAPPER_PREFIX.length(), desc.length() - 1);
        // Hash to a Wrapper
        Wrapper w = FROM_WRAPPER_NAME[hashWrapperName(cname)];
        if (w == null || w.wrapperSimpleName().equals(cname)) {
            return w;
        } else {
            return null;
        }
    }
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    private static String unboxingDescriptor(Wrapper w) {
        return "()" + w.basicTypeChar();
    }

    void boxIfTypePrimitive(Type t) {
        Wrapper w = FROM_TYPE_SORT[t.getSort()];
        if (w != null) {
            box(w);
        }
    }
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        }
        if (arg == Void.TYPE || target == Void.TYPE) {
            return;
        }
        if (arg.isPrimitive()) {
            Wrapper wArg = Wrapper.forPrimitiveType(arg);
            if (target.isPrimitive()) {
                // Both primitives: widening
                widen(wArg, Wrapper.forPrimitiveType(target));
            } else {
                // Primitive argument to reference target
                String dTarget = BytecodeDescriptor.unparse(target);
                Wrapper wPrimTarget = wrapperOrNullFromDescriptor(dTarget);
                if (wPrimTarget != null) {
                    // The target is a boxed primitive type, widen to get there before boxing
                    widen(wArg, wPrimTarget);
                    box(wPrimTarget);
                } else {
                    // Otherwise, box and cast
                    box(wArg);
                    cast(wrapperName(wArg), dTarget);
                }
            }
        } else {
            String dArg = BytecodeDescriptor.unparse(arg);
            String dSrc;
            if (functional.isPrimitive()) {
                dSrc = dArg;
            } else {
                // Cast to convert to possibly more specific type, and generate CCE for invalid arg
                dSrc = BytecodeDescriptor.unparse(functional);
                cast(dArg, dSrc);
            }
            String dTarget = BytecodeDescriptor.unparse(target);
            if (target.isPrimitive()) {
                Wrapper wTarget = toWrapper(dTarget);
                // Reference argument to primitive target
                Wrapper wps = wrapperOrNullFromDescriptor(dSrc);
                if (wps != null) {
                    if (wps.isSigned() || wps.isFloating()) {
                        // Boxed number to primitive
                        unbox(wrapperName(wps), wTarget);
                    } else {
                        // Character or Boolean
                        unbox(wrapperName(wps), wps);
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        MethodHandle retFilter = null;
        Class<?> oldRT = oldType.returnType();
        Class<?> newRT = newType.returnType();
        if (!VerifyType.isNullConversion(oldRT, newRT)) {
            if (oldRT == void.class) {
                Wrapper wrap = newRT.isPrimitive() ? Wrapper.forPrimitiveType(newRT) : Wrapper.OBJECT;
                retFilter = ValueConversions.zeroConstantFunction(wrap);
            } else {
                retFilter = MethodHandles.identity(newRT);
                retFilter = convertArguments(retFilter, retFilter.type().changeParameterType(0, oldRT), level);
            }
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    /** Can an primitive unboxing adapter validly convert src to dst? */
    static boolean canUnboxArgument(Class<?> src, Class<?> dst, int level) {
        assert(dst.isPrimitive());
        // if we have JVM support for boxing, we can also do complex unboxing
        if (convOpSupported(OP_PRIM_TO_REF))  return true;
        Wrapper dw = Wrapper.forPrimitiveType(dst);
        // Level 0 means cast and unbox.  This works on any reference.
        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;
    }
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     *  which will prevent the creation of an illegally typed bound
     *  method handle.
     */
    final static Object bindPrimitiveArgument(Object argument, MethodHandle mh, int argnum) {
        Class<?> ptype = mh.type().parameterType(argnum);
        Wrapper  wrap = Wrapper.forPrimitiveType(ptype);
        Object   zero  = wrap.zero();
        if (zero == null) {
            // fail
        } else if (argument == null) {
            if (ptype != int.class && wrap.isSubwordOrInt())
                return Integer.valueOf(0);
            else
                return zero;
        } else if (VerifyType.isNullReferenceConversion(argument.getClass(), zero.getClass())) {
            if (ptype != int.class && wrap.isSubwordOrInt())
                return Wrapper.INT.wrap(argument);
            else
                return argument;
        }
        throw badBoundArgumentException(argument, mh, argnum);
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Related Classes of sun.invoke.util.Wrapper

  • java.lang.invoke.BoundMethodHandle
  • java.lang.invoke.MethodTypeForm
  • java.lang.invoke.FromGeneric
  • java.lang.invoke.AbstractValidatingLambdaMetafactory
  • java.lang.invoke.LambdaForm
  • java.lang.invoke.DirectMethodHandle
  • java.lang.invoke.MethodType
  • java.lang.invoke.AdapterMethodHandle
  • java.lang.invoke.MethodHandleImpl
  • java.lang.invoke.InvokerBytecodeGenerator
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