C# Cil.MethodSymbols类代码示例

		int ICorDebugManagedCallback.LoadAssembly (CorDebugAppDomain pAppDomain, CorDebugAssembly pAssembly)
		{
			assemblies.Add (pAssembly);

			//CorMetadataImport mi = new CorMetadataImport(pAssembly);

			//Seems like this is always set on MicroFramework
			//pAssembly. JITCompilerFlags = CorDebugJITCompilerFlags.CORDEBUG_JIT_DISABLE_OPTIMIZATION;
			List<string> docPaths = new List<string> ();
			if (pAssembly.DebugData != null) {
				var md = pAssembly.MetaData;
				var reader = pAssembly.DebugData;
				if (!pAssembly.IsFrameworkAssembly) {
					foreach (var module in md.Assembly.Modules) {
						foreach (var t in module.Types) {
							foreach (var m in t.Methods) {
								var methodSymbols = new MethodSymbols (m.MetadataToken);
								//Ugly hack
								if(reader is Mono.Cecil.Mdb.MdbReader)
								{
									foreach(var variable in m.Body.Variables)
										methodSymbols.Variables.Add(variable);
								}
								reader.Read (methodSymbols);
								if (methodSymbols.Instructions.Count == 0)
									continue;
								DocInfo document;
								if (!documents.TryGetValue (methodSymbols.Instructions [0].SequencePoint.Document.Url, out document)) {
									document = new DocInfo (methodSymbols.Instructions [0].SequencePoint.Document.Url);
									document.Assembly = pAssembly;
									documents.Add (document.Url, document);
								}
								document.AddMethod (m, methodSymbols);
								if (!docPaths.Contains (document.Url))
									docPaths.Add (document.Url);
							}
						}
					}
				}
				pAssembly.SetJmcStatus (true);
			} else {
				// Flag modules without debug info as not JMC. In this way
				// the debugger won't try to step into them
				pAssembly.SetJmcStatus (false);
			}
			foreach (var docPath in docPaths)
				BindSourceFileBreakpoints (docPath);
			pAppDomain.Process.Continue ();
			return 0;
		}

		static MetadataToken GetLocalVarToken (ByteBuffer buffer, MethodSymbols symbols)
		{
			if (symbols.variables.IsNullOrEmpty ())
				return MetadataToken.Zero;

			buffer.position = 8;
			return new MetadataToken (buffer.ReadUInt32 ());
		}

		void ReadLineNumbers (MethodEntry entry, MethodSymbols symbols)
		{
			var table = entry.GetLineNumberTable ();
			var lines = table.LineNumbers;

			var instructions = symbols.instructions = new Collection<InstructionSymbol> (lines.Length);

			for (int i = 0; i < lines.Length; i++) {
				var line = lines [i];

				instructions.Add (new InstructionSymbol (line.Offset, new SequencePoint (GetDocument (entry.CompileUnit.SourceFile)) {
					StartLine = line.Row,
					EndLine = line.Row,
				}));
			}
		}

        void DefineSequencePoints(MethodSymbols symbols)
        {
            var instructions = symbols.instructions;
            if (instructions == null)
                return;

            for (int i = 0; i < instructions.Count; i++) {
                var instruction = instructions [i];
                var sequence_point = instruction.SequencePoint;

                writer.DefineSequencePoints (
                    GetDocument (sequence_point.Document),
                    new [] { instruction.Offset },
                    new [] { sequence_point.StartLine },
                    new [] { sequence_point.StartColumn },
                    new [] { sequence_point.EndLine },
                    new [] { sequence_point.EndColumn });
            }
        }

        void WriteScope(MethodSymbols symbols, ScopeSymbol scope)
        {
            writer.OpenScope  (scope.Start);

            foreach (var s in scope.Scopes)
                WriteScope (symbols, s);

            DefineVariables   (symbols, scope.Variables, scope.Start, scope.End) ;
            writer.CloseScope (scope.End);
        }

        public ByteBuffer PatchRawMethodBody(MethodDefinition method, CodeWriter writer, out MethodSymbols symbols)
        {
            var buffer = new ByteBuffer ();
            symbols = new MethodSymbols (method.Name);

            this.method = method;
            reader.context = method;

            MoveTo (method.RVA);

            var flags = ReadByte ();

            MetadataToken local_var_token;

            switch (flags & 0x3) {
            case 0x2: // tiny
                buffer.WriteByte (flags);
                local_var_token = MetadataToken.Zero;
                symbols.code_size = flags >> 2;
                PatchRawCode (buffer, symbols.code_size, writer);
                break;
            case 0x3: // fat
                base.position--;

                PatchRawFatMethod (buffer, symbols, writer, out local_var_token);
                break;
            default:
                throw new NotSupportedException ();
            }

            var symbol_reader = reader.module.SymbolReader;
            if (symbol_reader != null && writer.metadata.write_symbols) {
                symbols.method_token = GetOriginalToken (writer.metadata, method);
                symbols.local_var_token = local_var_token;
                symbol_reader.Read (symbols);
            }

            return buffer;
        }

 public SourceMethodSymbol(MethodSymbols symbols)
 {
     name = symbols.MethodName;
     token = symbols.MethodToken.ToInt32 ();
 }

        public void Write(MethodSymbols symbols)
        {
            var sym_token = new SymbolToken (symbols.MethodToken.ToInt32 ());

            writer.OpenMethod (sym_token);
            DefineSequencePoints (symbols);
            DefineVariables (symbols);
            writer.CloseMethod ();
        }

        void ReadLines(PdbLines lines, MethodSymbols symbols)
        {
            symbols.Document = GetDocument (lines.file);

            var count = lines.lines.Length;

            symbols.Offsets = new int [count];
            symbols.StartRows = new int [count];
            symbols.StartColumns = new int [count];
            symbols.EndRows = new int [count];
            symbols.EndColumns = new int [count];

            for (int i = 0; i < lines.lines.Length; i++) {
                var line = lines.lines [i];

                symbols.Offsets [i] = (int) line.offset;
                symbols.StartRows [i] = (int) line.lineBegin;
                symbols.StartColumns [i] = line.colBegin;
                symbols.EndRows [i] = (int) line.lineEnd;
                symbols.EndColumns [i] = line.colEnd;
            }
        }

 void DefineSequencePoints(MethodSymbols symbols)
 {
     writer.DefineSequencePoints (
         GetDocument (symbols.Document),
         symbols.Offsets,
         symbols.StartRows,
         symbols.StartColumns,
         symbols.EndRows,
         symbols.EndColumns);
 }

        void DefineVariables(MethodSymbols symbols)
        {
            if (!symbols.HasVariables)
                return;

            var start_offset = 0;
            var end_offset = symbols.CodeSize;

            writer.OpenScope (start_offset);

            var sym_token = new SymbolToken (symbols.LocalVarToken.ToInt32 ());

            var variables = symbols.Variables;
            for (int i = 0; i < variables.Count; i++) {
                var variable = variables [i];
                CreateLocalVariable (variable, sym_token, start_offset, end_offset);
            }

            writer.CloseScope (end_offset);
        }

        static void ReadScopeAndLocals(PdbScope scope, ScopeSymbol parent, MethodSymbols symbols)
        {
            if (scope == null)
                return;

            ScopeSymbol s = new ScopeSymbol ();
            s.start = (int) scope.offset;
            s.end   = (int)(scope.offset + scope.length);

            if (parent != null)
                parent.Scopes.Add (s);
            else
            if (symbols.scope == null)
                symbols.scope = s;
            else
                throw new InvalidDataException () ;

            foreach (PdbSlot slot in scope.slots) {
                int index = (int) slot.slot;
                if (index < 0 || index >= symbols.Variables.Count)
                    continue;

                VariableDefinition variable = symbols.Variables [index];
                variable.Name = slot.name;

                s.Variables.Add (variable);
            }

            ReadScopeAndLocals (scope.scopes, s, symbols);
        }

        public void Read(MethodSymbols symbols)
        {
            PdbFunction function;
            if (!functions.TryGetValue (symbols.MethodToken.ToUInt32 (), out function))
                return;

            ReadSequencePoints (function, symbols);
            ReadScopeAndLocals (function.scopes, null, symbols);

            if (!string.IsNullOrEmpty (function.iteratorClass))
                symbols.IteratorType = function.iteratorClass;

            if (function.iteratorScopes != null)
                foreach (Microsoft.Cci.ILocalScope scope in function.iteratorScopes)
                {
                    RangeSymbol range = new RangeSymbol ();
                    range.start = (int) scope.Offset;
                    range.end   = (int)(scope.Offset + scope.Length);
                    symbols.IteratorScopes.Add (range);
                }
        }

		static void ReadLocalVariables (MethodEntry entry, MethodSymbols symbols)
		{
			foreach (var local in entry.GetLocals ()) {
				if (local.Index < 0 || local.Index >= symbols.Variables.Count) // Mono 2.6 emits wrong local infos for iterators
					continue;

				var variable = symbols.Variables [local.Index];
				variable.Name = local.Name;
			}
		}

        public void Read(MethodSymbols symbols)
        {
            PdbFunction function;
            if (!functions.TryGetValue (symbols.MethodToken.ToUInt32 (), out function))
                return;

            ReadSequencePoints (function, symbols);
            ReadLocals (function.scopes, symbols);
        }