fix code mappings helper method

Debugger/ILSpy.Debugger/Bookmarks/BookmarkManager.cs

@@ -163,7 +163,7 @@ namespace ILSpy.Debugger.Bookmarks
 
 			TypeDefinition type;
 			int newline;
-			if (newMappings.GetSourceCodeFromMetadataTokenAndOffset(token, instruction.ILInstructionOffset.From, out type, out newline)) {
+			if (newMappings.GetSourceCodeFromMetadataTokenAndOffset(markerType.FullName, token, instruction.ILInstructionOffset.From, out type, out newline)) {
 				// 4. create breakpoint for new languages
 				CurrentLineBookmark.SetPosition(type, newline, 0, newline, 0);
 			}
@@ -197,7 +197,7 @@ namespace ILSpy.Debugger.Bookmarks
 
 				TypeDefinition type;
 				int line;
-				if (newMappings.GetSourceCodeFromMetadataTokenAndOffset(token, instruction.ILInstructionOffset.From, out type, out line)) {
+				if (newMappings.GetSourceCodeFromMetadataTokenAndOffset(bp.Type.FullName, token, instruction.ILInstructionOffset.From, out type, out line)) {
 					// 2. create breakpoint for new languages
 					var bookmark = new BreakpointBookmark(type, new AstLocation(line, 0), BreakpointAction.Break, newLanguage);
 					AddMark(bookmark);

Debugger/ILSpy.Debugger/Services/Debugger/WindowsDebugger.cs

@@ -818,7 +818,8 @@ namespace ILSpy.Debugger.Services
 				int ilOffset = frame.IP;
 				int line;
 				TypeDefinition type;
-				if (CodeMappingsStorage.GetSourceCodeFromMetadataTokenAndOffset(token, ilOffset, out type, out line)) {
+			
+				if (CodeMappingsStorage.GetSourceCodeFromMetadataTokenAndOffset(frame.MethodInfo.DeclaringType.FullName, token, ilOffset, out type, out line)) {
 					DebuggerService.JumpToCurrentLine(type, line, 0, line, 0);
 				} else {
 					// is possible that the type is not decompiled yet, so we must do a decompilation on demand
@@ -857,7 +858,7 @@ namespace ILSpy.Debugger.Services
 					// try jump
 					int line;
 					TypeDefinition type;
-					if (CodeMappingsStorage.GetSourceCodeFromMetadataTokenAndOffset(token, ilOffset, out type, out line)) {
+					if (CodeMappingsStorage.GetSourceCodeFromMetadataTokenAndOffset(typeRef.FullName, token, ilOffset, out type, out line)) {
 						DebuggerService.JumpToCurrentLine(type, line, 0, line, 0);
 					} else {
 						// continue since we cannot find the debugged type

ICSharpCode.Decompiler/CodeMappings.cs

@@ -248,12 +248,15 @@ namespace ICSharpCode.Decompiler
 		/// Gets the source code and type name from metadata token and offset.
 		/// </summary>
 		/// <param name="codeMappings">Code mappings storage.</param>
+		/// <param name="currentTypeFullName">Current type name.</param>
 		/// <param name="token">Metadata token.</param>
 		/// <param name="ilOffset">IL offset.</param>
 		/// <param name="typeName">Type definition.</param>
 		/// <param name="line">Line number.</param>
+		/// <remarks>It is possible to exist to different types from different assemblies with the same metadata token.</remarks>
 		public static bool GetSourceCodeFromMetadataTokenAndOffset(
 			this ConcurrentDictionary<string, List<MemberMapping>> codeMappings,
+			string currentTypeFullName,
 			uint token,
 			int ilOffset,
 			out TypeDefinition type,
@@ -262,18 +265,19 @@ namespace ICSharpCode.Decompiler
 			type = null;
 			line = 0;
 			
-			foreach (var typename in codeMappings.Keys) {
+			if (!codeMappings.ContainsKey(currentTypeFullName))
-				var mapping = codeMappings[typename].Find(m => m.MetadataToken == token);
+				return false;
+			
+			var mapping = codeMappings[currentTypeFullName].Find(m => m.MetadataToken == token);
 			if (mapping == null)
-					continue;
+				return false;
+			
 			var codeMapping = mapping.MemberCodeMappings.Find(
 				cm => cm.ILInstructionOffset.From <= ilOffset && ilOffset <= cm.ILInstructionOffset.To - 1);
 			if (codeMapping == null) {
 				codeMapping = mapping.MemberCodeMappings.Find(cm => (cm.ILInstructionOffset.From >= ilOffset));
 				if (codeMapping == null) {
 					codeMapping = mapping.MemberCodeMappings.LastOrDefault();
-						if (codeMapping == null)
-							continue;
 				}
 			}
 			
@@ -281,8 +285,5 @@ namespace ICSharpCode.Decompiler
 			line = codeMapping.SourceCodeLine;
 			return true;
 		}
-			
-			return false;
-		}
 	}
 }