public static IParser <T> CastParser <T>(this object parser)
{
var parserType = parser.GetType();
var nameGetter = DynamicProperty.GetProperty(parserType, nameof(Parser <object> .Name));
var tryParseMethod = parserType.GetMethod(nameof(Parser <object> .TryParse));
var tryParse = DynamicMethod.GetMethod(tryParseMethod);
var parseResult = tryParseMethod.ReturnType;
var isSuccess = DynamicMethod.GetMethod(parseResult,
nameof(IParseResult <object> .IsSuccess));
var errorGetter = DynamicProperty.GetProperty(parseResult, nameof(IParseResult <object> .Error));
var resultGetter = DynamicProperty.GetProperty(parseResult, nameof(IParseResult <object> .Result));
var name = (string)nameGetter(parser);
return(new Parser <T>(name, inp =>
{
var parsed = tryParse(parser, new object[] { inp });
if (!(bool)isSuccess(parsed, new object[0]))
{
var error = (ParseError)errorGetter(parsed);
return Parse.Error <T>(error);
}
var result = resultGetter(parsed);
return Parse.Success <T>(result);
}));
}
