Examples of GuardedInvocation

org.dynalang.dynalink.linker.GuardedInvocation
Represents a conditionally valid method handle. It is an immutable triple of an invocation method handle, a guard method handle that defines the applicability of the invocation handle, and a switch point that can be used for external invalidation of the invocation handle. The invocation handle is suitable for invocation if the guard handle returns true for its arguments, and as long as the switch point is not invalidated. Both the guard and the switch point are optional; neither, one, or both can be present. @author Attila Szegedi

Examples of org.dynalang.dynalink.linker.GuardedInvocation

        }


        @Override
        public GuardedInvocation getGuardedInvocation(LinkRequest request, LinkerServices linkerServices)
                throws Exception {
            final GuardedInvocation gi = super.getGuardedInvocation(request, linkerServices);
            if(gi != null) {
                return gi;
            }
            final CallSiteDescriptor desc = request.getCallSiteDescriptor();
            final String op = desc.getNameToken(CallSiteDescriptor.OPERATOR);
            if("new" == op && constructor != null) {
                final MethodHandle ctorInvocation = constructor.getInvocation(desc, linkerServices);
                if(ctorInvocation != null) {
                    return new GuardedInvocation(ctorInvocation, getClassGuard(desc.getMethodType()));
                }
            }
            return null;
        }

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Examples of org.dynalang.dynalink.linker.GuardedInvocation

        final LinkerServices ls = new LinkerServicesImpl(new TypeConverterFactory(Collections.singleton(
                new GuardingTypeConverterFactory() {
                    @Override
                    public GuardedInvocation convertToType(Class<?> sourceType, Class<?> targetType) {
                        if(targetType == int.class) {
                            return new GuardedInvocation(new Lookup(MethodHandles.publicLookup()).findVirtual(
                                    Double.class, "intValue", MethodType.methodType(int.class)).asType(
                                            MethodType.methodType(int.class, sourceType)), Guards.isOfClass(
                                                    Double.class, MethodType.methodType(boolean.class, sourceType)));
                        }
                        return null;

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Examples of org.dynalang.dynalink.linker.GuardedInvocation

        TypeBasedGuardingDynamicLinker linker = BeansLinker.getLinkerForClass(Test1.class);
        LinkerServices ls = LinkerServicesFactory.getLinkerServices(linker);




        Test1 test1 = new Test1();
        GuardedInvocation inv = linker.getGuardedInvocation(new LinkRequestImpl(
                CallSiteDescriptorFactory.create(MethodHandles.publicLookup(), "dyn:callMethod:add",
                        MethodType.methodType(Object.class, Object.class, Object.class, Object.class, Object.class, Object.class)),
                        false, null, null, null, null, null), ls);
        MethodHandle handle = inv.getInvocation();


        System.out.println(handle.invokeWithArguments(test1, 1, 2, 3, 4));
    }

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Examples of org.dynalang.dynalink.linker.GuardedInvocation

            }
        } else {
            typedFixedKey = fixedKey;
        }


        final GuardedInvocation gi = gic.getGuardedInvocation();
        final Binder binder = new Binder(linkerServices, callSiteType, typedFixedKey);
        final MethodHandle invocation = gi.getInvocation();


        if(nextComponent == null) {
            return gic.replaceInvocation(binder.bind(invocation));
        }


        final MethodHandle checkGuard = convertArgToInt(invocation == SET_LIST_ELEMENT ? RANGE_CHECK_LIST :
            RANGE_CHECK_ARRAY, linkerServices, callSiteDescriptor);
        return nextComponent.compose(MethodHandles.guardWithTest(binder.bindTest(checkGuard),
                binder.bind(invocation), nextComponent.getGuardedInvocation().getInvocation()), gi.getGuard(),
                gic.getValidatorClass(), gic.getValidationType());
    }

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Examples of org.dynalang.dynalink.linker.GuardedInvocation


    @Override
    public GuardedInvocation getGuardedInvocation(LinkRequest linkRequest, final LinkerServices linkerServices)
            throws Exception {
        for(final GuardingDynamicLinker linker: linkers) {
            final GuardedInvocation invocation = linker.getGuardedInvocation(linkRequest, linkerServices);
            if(invocation != null) {
                return invocation;
            }
        }
        return null;

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Examples of org.dynalang.dynalink.linker.GuardedInvocation

        return new GuardedInvocationComponent(guardedInvocation.replaceMethods(newInvocation,
                newGuard), validator);
    }


    private GuardedInvocationComponent(MethodHandle invocation, MethodHandle guard, Validator validator) {
        this(new GuardedInvocation(invocation, guard), validator);
    }

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Examples of org.dynalang.dynalink.linker.GuardedInvocation

            final MethodHandle invocation = ((DynamicMethod)receiver).getInvocation(
                    CallSiteDescriptorFactory.dropParameterTypes(desc, 0, 1), linkerServices);
            if(invocation == null) {
                return null;
            }
            return new GuardedInvocation(MethodHandles.dropArguments(invocation, 0,
                    desc.getMethodType().parameterType(0)), Guards.getIdentityGuard(receiver));
        }
        return null;
    }

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