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[mono.git] / mcs / class / corlib / System.Reflection.Emit / LocalBuilder.cs
1
2 //
3 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
4 //
5 // Permission is hereby granted, free of charge, to any person obtaining
6 // a copy of this software and associated documentation files (the
7 // "Software"), to deal in the Software without restriction, including
8 // without limitation the rights to use, copy, modify, merge, publish,
9 // distribute, sublicense, and/or sell copies of the Software, and to
10 // permit persons to whom the Software is furnished to do so, subject to
11 // the following conditions:
12 // 
13 // The above copyright notice and this permission notice shall be
14 // included in all copies or substantial portions of the Software.
15 // 
16 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
17 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
18 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
19 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
20 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
21 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
22 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
23 //
24
25 //
26 // System.Reflection.Emit/LocalBuilder.cs
27 //
28 // Authors:
29 //   Paolo Molaro (lupus@ximian.com)
30 //   Martin Baulig (martin@gnome.org)
31 //   Miguel de Icaza (miguel@ximian.com)
32 //
33 // (C) 2001, 2002 Ximian, Inc.  http://www.ximian.com
34 //
35
36 using System;
37 using System.Reflection;
38 using System.Reflection.Emit;
39 using System.Globalization;
40 using System.Runtime.CompilerServices;
41 using System.Diagnostics.SymbolStore;
42
43 namespace System.Reflection.Emit {
44         public sealed class LocalBuilder {
45                 //
46                 // These are kept in sync with reflection.h
47                 //
48                 #region Sync with reflection.h
49                 private Type type;
50                 private string name;
51                 private bool is_pinned;
52                 #endregion
53                 
54                 //
55                 // Order does not matter after here
56                 //
57                 internal ushort position;
58                 internal ILGenerator ilgen;
59
60                 internal LocalBuilder (Type t, ILGenerator ilgen)
61                 {
62                         this.type = t;
63                         this.ilgen = ilgen;
64                 }
65                 public void SetLocalSymInfo (string lname, int startOffset, int endOffset)
66                 {
67                         this.name = lname;
68
69                         SignatureHelper sighelper = SignatureHelper.GetLocalVarSigHelper (ilgen.module);
70                         sighelper.AddArgument (type);
71                         byte[] signature = sighelper.GetSignature ();
72
73                         ilgen.sym_writer.DefineLocalVariable (lname, FieldAttributes.Private,
74                                                                   signature, SymAddressKind.ILOffset,
75                                                                   (int) position, 0, 0,
76                                                                   startOffset, endOffset);
77                 }
78
79                 public void SetLocalSymInfo (string lname)
80                 {
81                         SetLocalSymInfo (lname, 0, 0);
82                 }
83
84
85                 public Type LocalType
86                 {
87                         get {
88                                 return type;
89                         }
90                 }
91                 
92                 internal void MakePinned ()
93                 {
94                         is_pinned = true;
95                 }
96         }
97 }