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.Collections.Generic;
28 using System.Linq.Expressions;
29 
30 using DbLinq.Data.Linq.Sugar.Expressions;
31 
32 namespace DbLinq.Data.Linq.Sugar.ExpressionMutator.Implementation
33 {
34     internal class ListInitExpressionMutator : IMutableExpression
35     {
36         protected ListInitExpression ListInitExpression { get; private set; }
37 
Mutate(IList<Expression> operands)38         public Expression Mutate(IList<Expression> operands)
39         {
40             // It's possible that the NewExpression was "optimized away" and
41             // replaced with a ConstantExpression.
42             // See Test_NUnit_MsSql.ReadTest.C27_SelectEntitySet,
43             var ne = operands[0] as NewExpression;
44             if (ne != null)
45                 return Expression.ListInit(ne, ListInitExpression.Initializers);
46             return ListInitExpression;
47         }
48 
49         public IEnumerable<Expression> Operands
50         {
51             get
52             {
53                 yield return ListInitExpression.NewExpression;
54                 // TODO: handle initializers
55             }
56         }
57 
ListInitExpressionMutator(ListInitExpression expression)58         public ListInitExpressionMutator(ListInitExpression expression)
59         {
60             ListInitExpression = expression;
61         }
62     }
63 }