Ejemplo n.º 1
0
    //public static Converter converter(MethodInfo m)
    //{
    //    var src = Expression.Parameter(typeof(object), "src");
    //    var convert = Expression.Convert(src, m.GetParameters()[0].ParameterType);
    //    var callResult = Expression.Call(null, m, convert);
    //    var result = Expression.Convert(callResult, typeof(object));
    //    return Expression.Lambda<Converter>(result, src).Compile();
    //}

    //public static Converter<TDst> converter<TDst>(MethodInfo m)
    //{
    //    var src = Expression.Parameter(typeof(object), "src");
    //    var convert = Expression.Convert(src, m.GetParameters()[0].ParameterType);
    //    var callResult = Expression.Call(null, m, convert);
    //    return Expression.Lambda<Converter<TDst>>(callResult, src).Compile();
    //}

    /// <summary>
    /// Creates an expression from a parameterless function delegate delegate
    /// </summary>
    /// <typeparam name="T">The delegate return type</typeparam>
    /// <param name="f"></param>
    /// <returns></returns>
    public static Expression <Func <T> > funcx <T>(Func <T> f)
    => FuncExpression.make(f);
Ejemplo n.º 2
0
 /// <summary>
 /// Creates an expression from a 2-argument function delegate
 /// </summary>
 /// <typeparam name="X1">The type of the delegate's first argument</typeparam>
 /// <typeparam name="X2">The type of the delegate's second argument</typeparam>
 /// <typeparam name="Y">The delegate return type</typeparam>
 /// <param name="f"></param>
 /// <returns></returns>
 public static Expression <Func <X1, X2, Y> > funcx <X1, X2, Y>(Func <X1, X2, Y> f)
 => FuncExpression.make(f);
Ejemplo n.º 3
0
 static FuncExpression <X, Y> Converter()
 => FuncExpression.make((X x) => (Y)Convert.ChangeType(x, typeof(Y)));