1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
|
// Copyright (c) 2011 AlphaSierraPapa for the SharpDevelop Team
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of this
// software and associated documentation files (the "Software"), to deal in the Software
// without restriction, including without limitation the rights to use, copy, modify, merge,
// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
// to whom the Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all copies or
// substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
using System;
using System.Diagnostics;
using ICSharpCode.NRefactory.CSharp;
using Mono.Cecil;
namespace ICSharpCode.Decompiler.Ast.Transforms
{
/// <summary>
/// Base class for AST visitors that need the current type/method context info.
/// </summary>
public abstract class ContextTrackingVisitor<TResult> : DepthFirstAstVisitor<object, TResult>, IAstTransform
{
protected readonly DecompilerContext context;
protected ContextTrackingVisitor(DecompilerContext context)
{
if (context == null)
throw new ArgumentNullException("context");
this.context = context;
}
public override TResult VisitTypeDeclaration(TypeDeclaration typeDeclaration, object data)
{
TypeDefinition oldType = context.CurrentType;
try {
context.CurrentType = typeDeclaration.Annotation<TypeDefinition>();
return base.VisitTypeDeclaration(typeDeclaration, data);
} finally {
context.CurrentType = oldType;
}
}
public override TResult VisitMethodDeclaration(MethodDeclaration methodDeclaration, object data)
{
Debug.Assert(context.CurrentMethod == null);
try {
context.CurrentMethod = methodDeclaration.Annotation<MethodDefinition>();
return base.VisitMethodDeclaration(methodDeclaration, data);
} finally {
context.CurrentMethod = null;
}
}
public override TResult VisitConstructorDeclaration(ConstructorDeclaration constructorDeclaration, object data)
{
Debug.Assert(context.CurrentMethod == null);
try {
context.CurrentMethod = constructorDeclaration.Annotation<MethodDefinition>();
return base.VisitConstructorDeclaration(constructorDeclaration, data);
} finally {
context.CurrentMethod = null;
}
}
public override TResult VisitDestructorDeclaration(DestructorDeclaration destructorDeclaration, object data)
{
Debug.Assert(context.CurrentMethod == null);
try {
context.CurrentMethod = destructorDeclaration.Annotation<MethodDefinition>();
return base.VisitDestructorDeclaration(destructorDeclaration, data);
} finally {
context.CurrentMethod = null;
}
}
public override TResult VisitOperatorDeclaration(OperatorDeclaration operatorDeclaration, object data)
{
Debug.Assert(context.CurrentMethod == null);
try {
context.CurrentMethod = operatorDeclaration.Annotation<MethodDefinition>();
return base.VisitOperatorDeclaration(operatorDeclaration, data);
} finally {
context.CurrentMethod = null;
}
}
public override TResult VisitAccessor(Accessor accessor, object data)
{
Debug.Assert(context.CurrentMethod == null);
try {
context.CurrentMethod = accessor.Annotation<MethodDefinition>();
return base.VisitAccessor(accessor, data);
} finally {
context.CurrentMethod = null;
}
}
void IAstTransform.Run(AstNode node)
{
node.AcceptVisitor(this, null);
}
}
}
|
