1 //
2 // CodeContractDecoder.cs
3 //
4 // Authors:
5 // 	Alexander Chebaturkin (chebaturkin@gmail.com)
6 //
7 // Copyright (C) 2011 Alexander Chebaturkin
8 //
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:
16 //
17 // The above copyright notice and this permission notice shall be
18 // included in all copies or substantial portions of the Software.
19 //
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.
27 //
28 
29 using Mono.CodeContracts.Static.AST;
30 using Mono.CodeContracts.Static.AST.Visitors;
31 
32 namespace Mono.CodeContracts.Static.Providers {
33 	class CodeContractDecoder : IContractProvider {
34 		public static readonly CodeContractDecoder Instance = new CodeContractDecoder ();
35 
36 		#region IContractProvider Members
VerifyMethod(Method method, bool analyzeNonUserCode)37 		public bool VerifyMethod (Method method, bool analyzeNonUserCode)
38 		{
39 			//todo: implement this
40 			return true;
41 		}
42 
HasRequires(Method method)43 		public bool HasRequires (Method method)
44 		{
45 			method = GetMethodWithContractFor (method);
46 			if (method.MethodContract == null)
47 				return false;
48 
49 			return method.MethodContract.RequiresCount > 0;
50 		}
51 
AccessRequires(Method method, ICodeConsumer<Data, Result> consumer, Data data)52 		public Result AccessRequires<Data, Result> (Method method,
53 		                                            ICodeConsumer<Data, Result> consumer, Data data)
54 		{
55 			method = GetMethodWithContractFor (method);
56 			return consumer.Accept (CodeProviderImpl.Instance, new CodeProviderImpl.PC (method.MethodContract, 0), data);
57 		}
58 
HasEnsures(Method method)59 		public bool HasEnsures (Method method)
60 		{
61 			method = GetMethodWithContractFor (method);
62 			if (method.MethodContract == null)
63 				return false;
64 
65 			return method.MethodContract.EnsuresCount > 0;
66 		}
67 
AccessEnsures(Method method, ICodeConsumer<Data, Result> consumer, Data data)68 		public Result AccessEnsures<Data, Result> (Method method, ICodeConsumer<Data, Result> consumer, Data data)
69 		{
70 			method = GetMethodWithContractFor (method);
71 			return consumer.Accept (CodeProviderImpl.Instance, new CodeProviderImpl.PC (method.MethodContract, method.MethodContract.RequiresCount + 2), data);
72 		}
73 
CanInheritContracts(Method method)74 		public bool CanInheritContracts (Method method)
75 		{
76 			return false;
77 		}
78 		#endregion
79 
GetMethodWithContractFor(Method method)80 		private Method GetMethodWithContractFor (Method method)
81 		{
82 			//todo: implement this
83 			return method;
84 		}
85 	}
86 }
87