38 lines
524 B
C#
38 lines
524 B
C#
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namespace System
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{
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partial struct Nullable<T>
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{
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//
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// These are called by the JIT
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//
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//
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// JIT implementation of box valuetype System.Nullable`1<T>
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//
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static object? Box (T? o)
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{
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if (!o.hasValue)
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return null;
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return o.value;
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}
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static T? Unbox (object o)
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{
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if (o == null)
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return null;
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return (T) o;
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}
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static T? UnboxExact (object o)
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{
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if (o == null)
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return null;
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if (o.GetType() != typeof (T))
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throw new InvalidCastException();
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return (T) o;
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}
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}
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}
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