Imported Upstream version 5.0.0.42

Former-commit-id: fd56571888259555122d8a0f58c68838229cea2b

external/linker/cecil/symbols/mdb/Mono.CompilerServices.SymbolWriter/MonoSymbolWriter.cs

@@ -0,0 +1,238 @@
+//
+// Mono.CSharp.Debugger/MonoSymbolWriter.cs
+//
+// Author:
+//   Martin Baulig (martin@ximian.com)
+//
+// This is the default implementation of the System.Diagnostics.SymbolStore.ISymbolWriter
+// interface.
+//
+// (C) 2002 Ximian, Inc.  http://www.ximian.com
+//
+
+//
+// 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.Runtime.CompilerServices;
+using System.Collections.Generic;
+using System.IO;
+
+namespace Mono.CompilerServices.SymbolWriter
+{
+	public class MonoSymbolWriter
+	{
+		List<SourceMethodBuilder> methods;
+		List<SourceFileEntry> sources;
+		List<CompileUnitEntry> comp_units;
+		protected readonly MonoSymbolFile file;
+		string filename;
+
+		private SourceMethodBuilder current_method;
+		Stack<SourceMethodBuilder> current_method_stack = new Stack<SourceMethodBuilder> ();
+
+		public MonoSymbolWriter (string filename)
+		{
+			this.methods = new List<SourceMethodBuilder> ();
+			this.sources = new List<SourceFileEntry> ();
+			this.comp_units = new List<CompileUnitEntry> ();
+			this.file = new MonoSymbolFile ();
+
+			this.filename = filename + ".mdb";
+		}
+
+		public MonoSymbolFile SymbolFile {
+			get { return file; }
+		}
+
+		public void CloseNamespace ()
+		{ }
+
+		public void DefineLocalVariable (int index, string name)
+		{
+			if (current_method == null)
+				return;
+
+			current_method.AddLocal (index, name);
+		}
+
+		public void DefineCapturedLocal (int scope_id, string name, string captured_name)
+		{
+			file.DefineCapturedVariable (scope_id, name, captured_name,
+						     CapturedVariable.CapturedKind.Local);
+		}
+
+		public void DefineCapturedParameter (int scope_id, string name, string captured_name)
+		{
+			file.DefineCapturedVariable (scope_id, name, captured_name,
+						     CapturedVariable.CapturedKind.Parameter);
+		}
+
+		public void DefineCapturedThis (int scope_id, string captured_name)
+		{
+			file.DefineCapturedVariable (scope_id, "this", captured_name,
+						     CapturedVariable.CapturedKind.This);
+		}
+
+		public void DefineCapturedScope (int scope_id, int id, string captured_name)
+		{
+			file.DefineCapturedScope (scope_id, id, captured_name);
+		}
+
+		public void DefineScopeVariable (int scope, int index)
+		{
+			if (current_method == null)
+				return;
+
+			current_method.AddScopeVariable (scope, index);
+		}
+
+		public void MarkSequencePoint (int offset, SourceFileEntry file, int line, int column,
+					       bool is_hidden)
+		{
+			if (current_method == null)
+				return;
+
+			current_method.MarkSequencePoint (offset, file, line, column, is_hidden);
+		}
+
+		public SourceMethodBuilder OpenMethod (ICompileUnit file, int ns_id, IMethodDef method)
+		{
+			SourceMethodBuilder builder = new SourceMethodBuilder (file, ns_id, method);
+			current_method_stack.Push (current_method);
+			current_method = builder;
+			methods.Add (current_method);
+			return builder;
+		}
+
+		public void CloseMethod ()
+		{
+			current_method = (SourceMethodBuilder) current_method_stack.Pop ();
+		}
+
+		public SourceFileEntry DefineDocument (string url)
+		{
+			SourceFileEntry entry = new SourceFileEntry (file, url);
+			sources.Add (entry);
+			return entry;
+		}
+
+		public SourceFileEntry DefineDocument (string url, byte[] guid, byte[] checksum)
+		{
+			SourceFileEntry entry = new SourceFileEntry (file, url, guid, checksum);
+			sources.Add (entry);
+			return entry;
+		}
+
+		public CompileUnitEntry DefineCompilationUnit (SourceFileEntry source)
+		{
+			CompileUnitEntry entry = new CompileUnitEntry (file, source);
+			comp_units.Add (entry);
+			return entry;
+		}
+
+		public int DefineNamespace (string name, CompileUnitEntry unit,
+					    string[] using_clauses, int parent)
+		{
+			if ((unit == null) || (using_clauses == null))
+				throw new NullReferenceException ();
+
+			return unit.DefineNamespace (name, using_clauses, parent);
+		}
+
+		public int OpenScope (int start_offset)
+		{
+			if (current_method == null)
+				return 0;
+
+			current_method.StartBlock (CodeBlockEntry.Type.Lexical, start_offset);
+			return 0;
+		}
+
+		public void CloseScope (int end_offset)
+		{
+			if (current_method == null)
+				return;
+
+			current_method.EndBlock (end_offset);
+		}
+
+		public void OpenCompilerGeneratedBlock (int start_offset)
+		{
+			if (current_method == null)
+				return;
+
+			current_method.StartBlock (CodeBlockEntry.Type.CompilerGenerated,
+						   start_offset);
+		}
+
+		public void CloseCompilerGeneratedBlock (int end_offset)
+		{
+			if (current_method == null)
+				return;
+
+			current_method.EndBlock (end_offset);
+		}
+
+		public void StartIteratorBody (int start_offset)
+		{
+			current_method.StartBlock (CodeBlockEntry.Type.IteratorBody,
+						   start_offset);
+		}
+
+		public void EndIteratorBody (int end_offset)
+		{
+			current_method.EndBlock (end_offset);
+		}
+
+		public void StartIteratorDispatcher (int start_offset)
+		{
+			current_method.StartBlock (CodeBlockEntry.Type.IteratorDispatcher,
+						   start_offset);
+		}
+
+		public void EndIteratorDispatcher (int end_offset)
+		{
+			current_method.EndBlock (end_offset);
+		}
+
+		public void DefineAnonymousScope (int id)
+		{
+			file.DefineAnonymousScope (id);
+		}
+
+		public void WriteSymbolFile (Guid guid)
+		{
+			foreach (SourceMethodBuilder method in methods)
+				method.DefineMethod (file);
+
+			try {
+				// We mmap the file, so unlink the previous version since it may be in use
+				File.Delete (filename);
+			} catch {
+				// We can safely ignore
+			}
+			using (FileStream fs = new FileStream (filename, FileMode.Create, FileAccess.Write)) {
+				file.CreateSymbolFile (guid, fs);
+			}
+		}
+	}
+}