List of asSpreader() Examples

Examples of asSpreader()

java.lang.invoke.MethodHandle.asSpreader()
ad both arguments from a 2-array: MethodHandle eq2 = equals.asSpreader(Object[].class, 2);}assert( (boolean) eq2.invokeExact(new Object[] "me", "me" })); assert(!(boolean) eq2.invokeExact(new Object[]{ "me", "thee" })); // try to spread from anything but a 2-array: for (int n = 0; n <= 10; n++) { Object[] badArityArgs = (n == 2 ? null : new Object[n]); try { assert((boolean) eq2.invokeExact(badArityArgs) && false); } catch (IllegalArgumentException ex) { } // OK } // spread both arguments from a String array: MethodHandle eq2s = equals.asSpreader(String[].class, 2); assert( (boolean) eq2s.invokeExact(new String[]{ "me", "me" })); assert(!(boolean) eq2s.invokeExact(new String[]{ "me", "thee" })); // spread second arguments from a 1-array: MethodHandle eq1 = equals.asSpreader(Object[].class, 1); assert( (boolean) eq1.invokeExact("me", new Object[]{ "me" })); assert(!(boolean) eq1.invokeExact("me", new Object[]{ "thee" })); // spread no arguments from a 0-array or null: MethodHandle eq0 = equals.asSpreader(Object[].class, 0); assert( (boolean) eq0.invokeExact("me", (Object)"me", new Object[0])); assert(!(boolean) eq0.invokeExact("me", (Object)"thee", (Object[])null)); // asSpreader and asCollector are approximate inverses: for (int n = 0; n <= 2; n++) { for (Class a : new Class[]{Object[].class, String[].class, CharSequence[].class}) { MethodHandle equals2 = equals.asSpreader(a, n).asCollector(a, n); assert( (boolean) equals2.invokeWithArguments("me", "me")); assert(!(boolean) equals2.invokeWithArguments("me", "thee")); } } MethodHandle caToString = publicLookup() .findStatic(Arrays.class, "toString", methodType(String.class, char[].class)); assertEquals("[A, B, C]", (String) caToString.invokeExact("ABC".toCharArray())); MethodHandle caString3 = caToString.asCollector(char[].class, 3); assertEquals("[A, B, C]", (String) caString3.invokeExact('A', 'B', 'C')); MethodHandle caToString2 = caString3.asSpreader(char[].class, 2); assertEquals("[A, B, C]", (String) caToString2.invokeExact('A', "BC".toCharArray())); } @param arrayType usually {@code Object[]}, the type of the array argument from which to extract the spread arguments @param arrayLength the number of arguments to spread from an incoming array argument @return a new method handle which spreads its final array argument,before calling the original method handle @throws NullPointerException if {@code arrayType} is a null reference @throws IllegalArgumentException if {@code arrayType} is not an array type,or if target does not have at least {@code arrayLength} parameter types,or if {@code arrayLength} is negative,or if the resulting method handle's type would have too many parameters @throws WrongMethodTypeException if the implied {@code asType} call fails @see #asCollector

Examples of java.lang.invoke.MethodHandle.asSpreader()

                .filterReturn(resultFilter)
                .invoke(nativeInvoker);


        if (signature.getParameterCount() > 3) {
            // Expand the incoming IRubyObject[] parameter array to individual params
            targetHandle = targetHandle.asSpreader(IRubyObject[].class, signature.getParameterCount());
        }


        MethodHandle methodHandle = Binder.from(site.type())
                .drop(0, 3).invoke(targetHandle);

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Examples of java.lang.invoke.MethodHandle.asSpreader()

            }


            int argCount = method.getArity().getValue();
            if (argCount > 3) {
                // Expand the incoming IRubyObject[] parameter array to individual params
                nativeTarget = nativeTarget.asSpreader(IRubyObject[].class, argCount);
            }


            nativeTarget = Binder.from(site.type())
                    .drop(1, 1)
                    .insert(2, method.getImplementationClass(), site.name())

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Examples of java.lang.invoke.MethodHandle.asSpreader()

                .filter(0, guards)
                .invoke(isTrue);


        if (signature.getParameterCount() > 3) {
            // Expand the incoming IRubyObject[] parameter array to individual params
            isTrue = isTrue.asSpreader(IRubyObject[].class, signature.getParameterCount());
        }


        return Binder.from(site.type().changeReturnType(boolean.class))
                .drop(0, 3)
                .invoke(isTrue);

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Examples of java.lang.invoke.MethodHandle.asSpreader()

                .filterReturn(resultFilter)
                .invoke(nativeInvoker);


        if (signature.getParameterCount() > 3) {
            // Expand the incoming IRubyObject[] parameter array to individual params
            targetHandle = targetHandle.asSpreader(IRubyObject[].class, signature.getParameterCount());
        }


        MethodHandle methodHandle = Binder.from(site.type())
                .drop(0, 3).invoke(targetHandle);

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Examples of java.lang.invoke.MethodHandle.asSpreader()

        }


        int argCount = method.getArity().getValue();
        if (argCount > 3) {
            // Expand the incoming IRubyObject[] parameter array to individual params
            nativeTarget = nativeTarget.asSpreader(IRubyObject[].class, argCount);
        }


        nativeTarget = Binder.from(site.type())
                .drop(1, 1)
                .insert(2, method.getImplementationClass(), site.name())

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Examples of java.lang.invoke.MethodHandle.asSpreader()

                .filter(0, guards)
                .invoke(isTrue);


        if (signature.getParameterCount() > 3) {
            // Expand the incoming IRubyObject[] parameter array to individual params
            isTrue = isTrue.asSpreader(IRubyObject[].class, signature.getParameterCount());
        }


        return Binder.from(site.type().changeReturnType(boolean.class))
                .drop(0, 3)
                .invoke(isTrue);

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Examples of java.lang.invoke.MethodHandle.asSpreader()


    public final Object invokeDynamic(final Object... args) throws TargetInvocationException {
        try {
            if (_spreadInvoker == null) {
                final MethodHandle methodHandle = getMethodHandle();
                _spreadInvoker = methodHandle.asSpreader(Object[].class, _method.getParameters().size());
            }
            return _spreadInvoker.invoke(args);
        }
        catch (Throwable t) {
            throw new TargetInvocationException(t);

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