source: branches/HeuristicLab.Problems.GPDL/HeuristicLab.Problems.GPDL/3.4/Util.cs

Last change on this file was 10080, checked in by gkronber, 6 years ago

#2026 implemented a code generator for random search solvers for GPDL problems

File size: 1.9 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2013 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
4 *
5 * This file is part of HeuristicLab.
6 *
7 * HeuristicLab is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * HeuristicLab is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
19 */
20#endregion
21
22using System.Collections.Generic;
23using System.Linq;
24using System.Text.RegularExpressions;
25
26public class Util {
27  // simplistic regex for formal parameters, any string of non-whitespace and not comma characters is allowed as a type name
28  // this has to be changed to allow for e.g., generic types (S<T0, T1>) and for expressions in actual parameters (max(x, 0) + 1))
29  private static string refOrOutGroup = @"(?:(?<refOrOut>(out|ref))\s+)"; // "ref " | "out "
30  private static string typeGroup = @"(?:(?<type>[^,]+)\s+)";
31  private static string identGroup = @"(?:(?<id>[^,]+)\s*)";
32  private static Regex formalParameterExpr = new Regex(@"\s*,?\s*" + refOrOutGroup + "?" + typeGroup + "?" + identGroup, RegexOptions.ECMAScript);
33  public static IEnumerable<TerminalNode.FieldDefinition> ExtractParameters(string formalParameterSrc) {
34
35    var matches = formalParameterExpr.Matches(formalParameterSrc);
36
37    foreach (var m in matches.OfType<Match>()) {
38      yield return new TerminalNode.FieldDefinition(m.Groups["refOrOut"].Value, m.Groups["type"].Value, m.Groups["id"].Value);
39    }
40  }
41}
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