コード例 #1
0
        internal static object GetNew(Type type)
        {
            Func <object> del;

            if (Ctors.TryGetValue(type, out del))
            {
                return(del());
            }

            if (type.HasDefaultConstructor())
            {
                Expression @new = Expression.New(type);
                if (type.IsValueType) //lambda won't box by default, which is required for value types.
                {
                    @new = Expression.Convert(@new, typeof(object));
                }

                del = (Func <object>)Expression.Lambda(typeof(Func <object>), @new).Compile();
            }
            else
            {
                del = () => null;
            }

            Ctors[type] = del;
            return(del());
        }
コード例 #2
0
        internal static ContentMatchExpression CreateContentMatchExpression(ContentToken token)
        {
            string header = token.Content.Substring(0, token.Content.IndexOf(':') + 1);

            if (string.IsNullOrWhiteSpace(header))
            {
                return(new TextMatchExpression(token));
            }
            else
            {
                Func <ContentToken, ContentMatchExpression> ctor;
                if (Ctors.TryGetValue(header, out ctor))
                {
                    return(ctor(token));
                }
                else
                {
                    return(new TextMatchExpression(token));
                }
            }
        }