示例#1
0
        /// <summary>
        /// Dynamically Invokes a member method which returns void using the DLR
        /// </summary>
        /// <param name="target">The target.</param>
        /// <param name="name">The name.</param>
        /// <param name="args">The args.</param>
        /// <example>
        /// Unit test that exhibits usage:
        /// <code>
        /// <![CDATA[
        ///    var tTest = "Wrong";
        ///    var tValue = "Correct";
        ///
        ///    dynamic tExpando = new ExpandoObject();
        ///    tExpando.Action = new Action<string>(it => tTest = it);
        ///
        ///    Impromptu.InvokeMemberAction(tExpando, "Action", tValue);
        ///
        ///    Assert.AreEqual(tValue, tTest);
        /// ]]>
        /// </code>
        /// </example>
        public static void InvokeMemberAction(object target, String_OR_InvokeMemberName name, params object[] args)
        {
            target = target.GetTargetContext(out var tContext, out var tStaticContext);
            args   = Util.GetArgsAndNames(args, out var tArgNames);

            CallSite tCallSite = null;

            InvokeHelper.InvokeMemberActionCallSite(target, (InvokeMemberName)name, args, tArgNames, tContext, tStaticContext,
                                                    ref tCallSite);
        }
示例#2
0
        public override object Invoke(object target, params object[] args)
        {
            var tIContext = target as InvokeContext;

            if (tIContext != null)
            {
                target = tIContext.Target;
            }

            if (args == null)
            {
                args = new object[] { null };
            }


            if (args.Length != _argCount)
            {
                switch (Kind)
                {
                case InvocationKind.Convert:
                    if (args.Length > 0)
                    {
                        if (!Equals(args[0], _convertType))
                        {
                            throw new ArgumentException("CacheableInvocation can't change conversion type on invoke.", "args");
                        }
                    }
                    if (args.Length > 1)
                    {
                        if (!Equals(args[1], _convertExplicit))
                        {
                            throw new ArgumentException("CacheableInvocation can't change explict/implict conversion on invoke.", "args");
                        }
                    }

                    if (args.Length > 2)
                    {
                        goto default;
                    }
                    break;

                default:
                    throw new ArgumentException("args", string.Format("Incorrect number of Arguments for CachedInvocation, Expected:{0}", _argCount));
                }
            }

            switch (Kind)
            {
            case InvocationKind.Constructor:
                var tTarget = (Type)target;
                return(InvokeHelper.InvokeConstructorCallSite(tTarget, tTarget.IsValueType, args, _argNames,
                                                              ref _callSite));

            case InvocationKind.Convert:
                return(InvokeHelper.InvokeConvertCallSite(target, _convertExplicit, _convertType, _context,
                                                          ref _callSite));

            case InvocationKind.Get:
                return(InvokeHelper.InvokeGetCallSite(target, Name.Name, _context, _staticContext, ref _callSite));

            case InvocationKind.Set:
                InvokeHelper.InvokeSetCallSite(target, Name.Name, args[0], _context, _staticContext, ref _callSite);
                return(null);

            case InvocationKind.GetIndex:
                return(InvokeHelper.InvokeGetIndexCallSite(target, args, _argNames, _context, _staticContext, ref _callSite));

            case InvocationKind.SetIndex:
                Impromptu.InvokeSetIndex(target, args);
                return(null);

            case InvocationKind.InvokeMember:
                return(InvokeHelper.InvokeMemberCallSite(target, Name, args, _argNames, _context, _staticContext, ref _callSite));

            case InvocationKind.InvokeMemberAction:
                InvokeHelper.InvokeMemberActionCallSite(target, Name, args, _argNames, _context, _staticContext, ref _callSite);
                return(null);

            case InvocationKind.InvokeMemberUnknown:
            {
                try
                {
                    var tObj = InvokeHelper.InvokeMemberCallSite(target, Name, args, _argNames, _context, _staticContext, ref _callSite);
                    return(tObj);
                }
                catch (RuntimeBinderException)
                {
                    InvokeHelper.InvokeMemberActionCallSite(target, Name, args, _argNames, _context, _staticContext, ref _callSite2);
                    return(null);
                }
            }

            case InvocationKind.Invoke:
                return(InvokeHelper.InvokeDirectCallSite(target, args, _argNames, _context, _staticContext, ref _callSite));

            case InvocationKind.InvokeAction:
                InvokeHelper.InvokeDirectActionCallSite(target, args, _argNames, _context, _staticContext, ref _callSite);
                return(null);

            case InvocationKind.InvokeUnknown:
            {
                try
                {
                    var tObj = InvokeHelper.InvokeDirectCallSite(target, args, _argNames, _context, _staticContext, ref _callSite);
                    return(tObj);
                }
                catch (RuntimeBinderException)
                {
                    InvokeHelper.InvokeDirectActionCallSite(target, args, _argNames, _context, _staticContext, ref _callSite2);
                    return(null);
                }
            }

            case InvocationKind.AddAssign:
                InvokeHelper.InvokeAddAssignCallSite(target, Name.Name, args, _argNames, _context, _staticContext, ref _callSite, ref _callSite2, ref _callSite3, ref _callSite4);
                return(null);

            case InvocationKind.SubtractAssign:
                InvokeHelper.InvokeSubtractAssignCallSite(target, Name.Name, args, _argNames, _context, _staticContext, ref _callSite, ref _callSite2, ref _callSite3, ref _callSite4);
                return(null);

            case InvocationKind.IsEvent:
                return(InvokeHelper.InvokeIsEventCallSite(target, Name.Name, _context, ref _callSite));

            default:
                throw new InvalidOperationException("Unknown Invocation Kind: " + Kind);
            }
        }