mcs/symbolwriter.cs

   1 //
   2 // symbolwriter.cs: The symbol writer
   3 //
   4 // Author:
   5 //   Martin Baulig (martin@ximian.com)
   6 //
   7 // Copyright 2003 Ximian, Inc.
   8 // Copyright 2003-2008 Novell, Inc.
   9 //
  10
  11 using System;
  12 using System.Collections;
  13 using System.Reflection;
  14 using System.Reflection.Emit;
  15
  16 using Mono.CompilerServices.SymbolWriter;
  17
  18 namespace Mono.CSharp {
  19         public static class SymbolWriter
  20         {
  21                 public static bool HasSymbolWriter {
  22                         get { return symwriter != null; }
  23                 }
  24
  25                 private static SymbolWriterImpl symwriter;
  26
  27                 class SymbolWriterImpl : MonoSymbolWriter {
  28                         delegate int GetILOffsetFunc (ILGenerator ig);
  29                         delegate Guid GetGuidFunc (ModuleBuilder mb);
  30
  31                         GetILOffsetFunc get_il_offset_func;
  32                         GetGuidFunc get_guid_func;
  33
  34                         ModuleBuilder module_builder;
  35
  36                         public SymbolWriterImpl (ModuleBuilder module_builder, string filename)
  37                                 : base (filename)
  38                         {
  39                                 this.module_builder = module_builder;
  40                         }
  41
  42                         public int GetILOffset (ILGenerator ig)
  43                         {
  44                                 return get_il_offset_func (ig);
  45                         }
  46
  47                         public void WriteSymbolFile ()
  48                         {
  49                                 Guid guid = get_guid_func (module_builder);
  50                                 WriteSymbolFile (guid);
  51                         }
  52
  53                         public bool Initialize ()
  54                         {
  55                                 MethodInfo mi = typeof (ILGenerator).GetMethod (
  56                                         "Mono_GetCurrentOffset",
  57                                         BindingFlags.Static | BindingFlags.NonPublic);
  58                                 if (mi == null)
  59                                         return false;
  60
  61                                 get_il_offset_func = (GetILOffsetFunc) System.Delegate.CreateDelegate (
  62                                         typeof (GetILOffsetFunc), mi);
  63
  64                                 mi = typeof (ModuleBuilder).GetMethod (
  65                                         "Mono_GetGuid",
  66                                         BindingFlags.Static | BindingFlags.NonPublic);
  67                                 if (mi == null)
  68                                         return false;
  69
  70                                 get_guid_func = (GetGuidFunc) System.Delegate.CreateDelegate (
  71                                         typeof (GetGuidFunc), mi);
  72
  73                                 Location.DefineSymbolDocuments (this);
  74
  75                                 return true;
  76                         }
  77                 }
  78
  79                 public static void DefineLocalVariable (string name, LocalBuilder builder)
  80                 {
  81                         if (symwriter != null) {
  82                                 int index = MonoDebuggerSupport.GetLocalIndex (builder);
  83                                 symwriter.DefineLocalVariable (index, name);
  84                         }
  85                 }
  86
  87                 public static SourceMethodBuilder OpenMethod (ICompileUnit file, int ns_id,
  88                                                               IMethodDef method)
  89                 {
  90                         if (symwriter != null)
  91                                 return symwriter.OpenMethod (file, ns_id, method);
  92                         else
  93                                 return null;
  94                 }
  95
  96                 public static void CloseMethod ()
  97                 {
  98                         if (symwriter != null)
  99                                 symwriter.CloseMethod ();
 100                 }
 101
 102                 public static int OpenScope (ILGenerator ig)
 103                 {
 104                         if (symwriter != null) {
 105                                 int offset = symwriter.GetILOffset (ig);
 106                                 return symwriter.OpenScope (offset);
 107                         } else {
 108                                 return -1;
 109                         }
 110                 }
 111
 112                 public static void CloseScope (ILGenerator ig)
 113                 {
 114                         if (symwriter != null) {
 115                                 int offset = symwriter.GetILOffset (ig);
 116                                 symwriter.CloseScope (offset);
 117                         }
 118                 }
 119
 120                 public static int DefineNamespace (string name, CompileUnitEntry source,
 121                                                    string[] using_clauses, int parent)
 122                 {
 123                         if (symwriter != null)
 124                                 return symwriter.DefineNamespace (name, source, using_clauses, parent);
 125                         else
 126                                 return -1;
 127                 }
 128
 129 #region Terrania additions
 130                 public static void DefineAnonymousScope (int id)
 131                 {
 132                         if (symwriter != null)
 133                                 symwriter.DefineAnonymousScope (id);
 134                 }
 135
 136                 public static void DefineScopeVariable (int scope, LocalBuilder builder)
 137                 {
 138                         if (symwriter != null) {
 139                                 int index = MonoDebuggerSupport.GetLocalIndex (builder);
 140                                 symwriter.DefineScopeVariable (scope, index);
 141                         }
 142                 }
 143
 144                 public static void DefineScopeVariable (int scope)
 145                 {
 146                         if (symwriter != null)
 147                                 symwriter.DefineScopeVariable (scope, -1);
 148                 }
 149
 150                 public static void DefineCapturedLocal (int scope_id, string name,
 151                                                         string captured_name)
 152                 {
 153                         if (symwriter != null)
 154                                 symwriter.DefineCapturedLocal (scope_id, name, captured_name);
 155                 }
 156
 157                 public static void DefineCapturedParameter (int scope_id, string name,
 158                                                             string captured_name)
 159                 {
 160                         if (symwriter != null)
 161                                 symwriter.DefineCapturedParameter (scope_id, name, captured_name);
 162                 }
 163
 164                 public static void DefineCapturedThis (int scope_id, string captured_name)
 165                 {
 166                         if (symwriter != null)
 167                                 symwriter.DefineCapturedThis (scope_id, captured_name);
 168                 }
 169
 170                 public static void DefineCapturedScope (int scope_id, int id, string captured_name)
 171                 {
 172                         if (symwriter != null)
 173                                 symwriter.DefineCapturedScope (scope_id, id, captured_name);
 174                 }
 175
 176                 public static void OpenCompilerGeneratedBlock (ILGenerator ig)
 177                 {
 178                         if (symwriter != null) {
 179                                 int offset = symwriter.GetILOffset (ig);
 180                                 symwriter.OpenCompilerGeneratedBlock (offset);
 181                         }
 182                 }
 183
 184                 public static void CloseCompilerGeneratedBlock (ILGenerator ig)
 185                 {
 186                         if (symwriter != null) {
 187                                 int offset = symwriter.GetILOffset (ig);
 188                                 symwriter.CloseCompilerGeneratedBlock (offset);
 189                         }
 190                 }
 191
 192                 public static void StartIteratorBody (ILGenerator ig)
 193                 {
 194                         if (symwriter != null) {
 195                                 int offset = symwriter.GetILOffset (ig);
 196                                 symwriter.StartIteratorBody (offset);
 197                         }
 198                 }
 199
 200                 public static void EndIteratorBody (ILGenerator ig)
 201                 {
 202                         if (symwriter != null) {
 203                                 int offset = symwriter.GetILOffset (ig);
 204                                 symwriter.EndIteratorBody (offset);
 205                         }
 206                 }
 207
 208                 public static void StartIteratorDispatcher (ILGenerator ig)
 209                 {
 210                         if (symwriter != null) {
 211                                 int offset = symwriter.GetILOffset (ig);
 212                                 symwriter.StartIteratorDispatcher (offset);
 213                         }
 214                 }
 215
 216                 public static void EndIteratorDispatcher (ILGenerator ig)
 217                 {
 218                         if (symwriter != null) {
 219                                 int offset = symwriter.GetILOffset (ig);
 220                                 symwriter.EndIteratorDispatcher (offset);
 221                         }
 222                 }
 223 #endregion
 224
 225                 public static void MarkSequencePoint (ILGenerator ig, Location loc)
 226                 {
 227                         if (symwriter != null) {
 228                                 SourceFileEntry file = loc.SourceFile.SourceFileEntry;
 229                                 int offset = symwriter.GetILOffset (ig);
 230                                 symwriter.MarkSequencePoint (
 231                                         offset, file, loc.Row, loc.Column, loc.Hidden);
 232                         }
 233                 }
 234
 235                 public static void WriteSymbolFile ()
 236                 {
 237                         if (symwriter != null)
 238                                 symwriter.WriteSymbolFile ();
 239                 }
 240
 241                 public static bool Initialize (ModuleBuilder module, string filename)
 242                 {
 243                         symwriter = new SymbolWriterImpl (module, filename);
 244                         if (!symwriter.Initialize ()) {
 245                                 symwriter = null;
 246                                 return false;
 247                         }
 248
 249                         return true;
 250                 }
 251
 252                 public static void Reset ()
 253                 {
 254                         symwriter = null;
 255                 }
 256         }
 257 }