1 #region MIT license
2 //
3 // MIT license
4 //
5 // Copyright (c) 2007-2008 Jiri Moudry, Pascal Craponne
6 //
7 // Permission is hereby granted, free of charge, to any person obtaining a copy
8 // of this software and associated documentation files (the "Software"), to deal
9 // in the Software without restriction, including without limitation the rights
10 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 // copies of the Software, and to permit persons to whom the Software is
12 // furnished to do so, subject to the following conditions:
13 //
14 // The above copyright notice and this permission notice shall be included in
15 // all copies or substantial portions of the Software.
16 //
17 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
20 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
23 // THE SOFTWARE.
24 //
25 #endregion
26 
27 using System.Linq.Expressions;
28 
29 namespace DbLinq.Data.Linq.Sugar
30 {
31     internal interface IExpressionOptimizer
32     {
33         /// <summary>
34         /// Optimizes expressions:
35         /// - Reduces constant trees
36         /// - Changes some expressions (ie "not a == b" ==> "a != b")
37         /// </summary>
38         /// <param name="expression"></param>
39         /// <param name="builderContext"></param>
40         /// <returns></returns>
Optimize(Expression expression, BuilderContext builderContext)41         Expression Optimize(Expression expression, BuilderContext builderContext);
42     }
43 }