public TokenParser(IEnumerable <TokenType> supportedTypes)
{
SupportedTypes = supportedTypes.ToArray();
LongestSymbol = SupportedTypes.Select(p =>
Math.Max(
p.EscapeOpen.Length + p.OpenSymbol.Length,
p.EscapeClose.Length + p.CloseSymbol.Length))
.Max();
}
/// <summary>
/// Initializes a new instance of the TypedPromptProvider class.
/// </summary>
static TypedPromptProvider()
{
DefaultTypedPromptFuncMap = new Dictionary <Type, Func <string, Dialog> >()
{
{ typeof(string), GetTextPrompt },
{ typeof(int?), GetIntPrompt },
{ typeof(double?), GetDoublePrompt },
{ typeof(bool?), GetBoolPrompt },
{ typeof(DateTime?), GetDateTimePrompt },
};
// We enforce the type check here to ensure all types either class or nullables.
// The null is required in PromptManager to see whether a property has been set or not.
// Note: You can implement custom TypedPromptProvider which takes a type other than the ones
// supported by default. But it'll fail the below check. This is done by intention since
// I'd like to make sure all supported types have a default implementation.
if (!DefaultTypedPromptFuncMap.ContainsKey(typeof(TProperty)))
{
var supportedTypes = string.Join(",", SupportedTypes.Select(t => (Nullable.GetUnderlyingType(t) ?? t).Name));
var msg = $"{typeof(TProperty).Name} is not supported by TypedPromptProvider. Supported types: {supportedTypes}.";
throw new NotSupportedException(msg);
}
}
