59 lines
957 B
C#
59 lines
957 B
C#
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using System;
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using System.Linq.Expressions;
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namespace System
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{
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public class FormattableString
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{
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public FormattableString (string str, object[] arguments)
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{
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Value = str;
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Arguments = arguments;
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}
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public string Value { get; set; }
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public object[] Arguments;
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}
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}
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namespace System.Runtime.CompilerServices
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{
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public static class FormattableStringFactory
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{
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public static object Create(string format, params object[] arguments)
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{
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if (format.StartsWith ("format"))
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return new MyFormattable ();
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return new FormattableString (format, arguments);
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}
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}
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}
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class MyFormattable : IFormattable
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{
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string IFormattable.ToString (string str, IFormatProvider provider)
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{
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return null;
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}
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}
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class ConversionTest
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{
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static int Main ()
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{
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byte b = 3;
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FormattableString c1;
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c1 = $"{b}";
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if (c1.Value != "{0}")
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return 1;
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IFormattable c2;
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c2 = $"format { b }";
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if (!(c2 is MyFormattable))
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return 2;
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return 0;
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}
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}
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