1 // OpenTween - Client of Twitter
2 // Copyright (c) 2014 kim_upsilon (@kim_upsilon) <https://upsilo.net/~upsilon/>
3 // All rights reserved.
5 // This file is part of OpenTween.
7 // This program is free software; you can redistribute it and/or modify it
8 // under the terms of the GNU General public License as published by the Free
9 // Software Foundation; either version 3 of the License, or (at your option)
12 // This program is distributed in the hope that it will be useful, but
13 // WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14 // or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General public License
17 // You should have received a copy of the GNU General public License along
18 // with this program. If not, see <http://www.gnu.org/licenses/>, or write to
19 // the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
20 // Boston, MA 02110-1301, USA.
25 using System.Collections.Concurrent;
26 using System.Collections.Generic;
29 using System.Text.RegularExpressions;
30 using System.Threading.Tasks;
34 public static class RegexAsync
36 public static async Task<string> ReplaceAsync(this Regex regex, string input, Func<Match, Task<string>> evaluator)
38 var matches = regex.Matches(input).Cast<Match>();
40 var evaluatorTasks = matches
41 .GroupBy(x => x.Value) // ToDictionaryする際に key が重複しないようにする
42 .Select(async x => new
45 Value = await evaluator(x.First()).ConfigureAwait(false),
48 var replacements = (await Task.WhenAll(evaluatorTasks).ConfigureAwait(false))
49 .ToDictionary(x => x.Key, x => x.Value);
51 return regex.Replace(input, x => replacements[x.Value]);