2 // ConditionNotExpression.cs
5 // Marek Sieradzki (marek.sieradzki@gmail.com)
7 // (C) 2006 Marek Sieradzki
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.
33 namespace Microsoft.Build.BuildEngine {
34 internal sealed class ConditionNotExpression : ConditionExpression {
36 readonly ConditionExpression expression;
38 public ConditionNotExpression (ConditionExpression expression)
40 this.expression = expression;
43 public override bool BoolEvaluate (Project context)
45 return !(expression.BoolEvaluate (context));
49 public override float NumberEvaluate (Project context)
51 throw new NotSupportedException ();
54 public override string StringEvaluate (Project context)
56 throw new NotSupportedException ();
59 public override bool CanEvaluateToBool (Project context)
61 return expression.CanEvaluateToBool (context);
64 public override bool CanEvaluateToNumber (Project context)
69 public override bool CanEvaluateToString (Project context)