5 // Marek Safar <marek.safar@gmail.com>
7 // Copyright (C) 2014 Xamarin Inc (http://www.xamarin.com)
9 // Permission is hereby granted, free of charge, to any person obtaining
10 // a copy of this software and associated documentation files (the
11 // "Software"), to deal in the Software without restriction, including
12 // without limitation the rights to use, copy, modify, merge, publish,
13 // distribute, sublicense, and/or sell copies of the Software, and to
14 // permit persons to whom the Software is furnished to do so, subject to
15 // the following conditions:
17 // The above copyright notice and this permission notice shall be
18 // included in all copies or substantial portions of the Software.
20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
29 using System.Collections.Generic;
31 namespace System.Net.Http.Headers
33 delegate bool ElementTryParser<T> (Lexer lexer, out T parsedValue, out Token token);
35 static class CollectionParser
37 public static bool TryParse<T> (string input, int minimalCount, ElementTryParser<T> parser, out List<T> result) where T : class
39 var lexer = new Lexer (input);
40 result = new List<T> ();
45 if (!parser (lexer, out parsedValue, out token))
48 if (parsedValue != null)
49 result.Add (parsedValue);
51 if (token == Token.Type.SeparatorComma)
54 if (token == Token.Type.End) {
55 if (minimalCount > result.Count) {
68 public static bool TryParse (string input, int minimalCount, out List<string> result)
70 return TryParse (input, minimalCount, TryParseStringElement, out result);
73 public static bool TryParseRepetition (string input, int minimalCount, out List<string> result)
75 return TryParseRepetition (input, minimalCount, TryParseStringElement, out result);
78 static bool TryParseStringElement (Lexer lexer, out string parsedValue, out Token t)
81 if (t == Token.Type.Token) {
82 parsedValue = lexer.GetStringValue (t);
83 if (parsedValue.Length == 0)
94 public static bool TryParseRepetition<T> (string input, int minimalCount, ElementTryParser<T> parser, out List<T> result) where T : class
96 var lexer = new Lexer (input);
97 result = new List<T> ();
102 if (!parser (lexer, out parsedValue, out token))
105 if (parsedValue != null)
106 result.Add (parsedValue);
108 if (token == Token.Type.End) {
109 if (minimalCount > result.Count)