Added methods for "Set current statement" to IDebugger

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@724 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

src/AddIns/Misc/Debugger/Debugger.AddIn/Project/Src/Service/SetCurrentStatementCommand.cs

@@ -18,14 +18,9 @@ namespace ICSharpCode.SharpDevelop.Services
 		public override void Run()
 		{
 			SharpDevelopTextAreaControl textEditor = this.Owner as SharpDevelopTextAreaControl;
-			if (textEditor == null) return;
+			if (textEditor == null || DebuggerService.CurrentDebugger == null) return;
 			
-			WindowsDebugger debugger = (WindowsDebugger)DebuggerService.CurrentDebugger;
-			string fileName = textEditor.FileName;
-			int line = textEditor.ActiveTextAreaControl.Caret.Line + 1;
-			int column = textEditor.ActiveTextAreaControl.Caret.Column;
-			
-			debugger.DebuggerCore.CurrentThread.CurrentFunction.SetIP(fileName, line, column);
+			DebuggerService.CurrentDebugger.SetInstructionPointer(textEditor.FileName, textEditor.ActiveTextAreaControl.Caret.Line + 1, textEditor.ActiveTextAreaControl.Caret.Column);
 		}
 	}
 }

src/AddIns/Misc/Debugger/Debugger.AddIn/Project/Src/Service/WindowsDebugger.cs

@@ -259,6 +259,26 @@ namespace ICSharpCode.SharpDevelop.Services
 			}
 		}
 		
+		public bool CanSetInstructionPointer(string filename, int line, int column)
+		{
+			if (debugger != null && debugger.IsPaused && debugger.CurrentFunction != null) {
+				SourcecodeSegment seg = debugger.CurrentFunction.CanSetIP(filename, line, column);
+				return seg != null;
+			} else {
+				return false;
+			}
+		}
+		
+		public bool SetInstructionPointer(string filename, int line, int column)
+		{
+			if (CanSetInstructionPointer(filename, line, column)) {
+				SourcecodeSegment seg = debugger.CurrentFunction.SetIP(filename, line, column);
+				return seg != null;
+			} else {
+				return false;
+			}
+		}
+		
 		public void Dispose() 
 		{
 			Stop();

src/Main/Base/Project/Src/Services/Debugger/DefaultDebugger.cs

@@ -122,6 +122,17 @@ namespace ICSharpCode.Core
 			return null;
 		}
 		
+		public bool CanSetInstructionPointer(string filename, int line, int column)
+		{
+			return false;
+		}
+		
+		public bool SetInstructionPointer(string filename, int line, int column)
+		{
+			return false;
+		}
+		
+		
 		public event EventHandler DebugStarted;
 		
 		protected virtual void OnDebugStarted(EventArgs e) 

src/Main/Base/Project/Src/Services/Debugger/IDebugger.cs

@@ -67,6 +67,18 @@ namespace ICSharpCode.Core
 		/// </summary>
 		DebuggerGridControl GetTooltipControl(string variable);
 		
+		/// <summary>
+		/// Queries the debugger whether it is possible to set the instruction pointer to a given position.
+		/// </summary>
+		/// <returns>True if possible. False otherwise</returns>
+		bool CanSetInstructionPointer(string filename, int line, int column);
+		
+		/// <summary>
+		/// Set the instruction pointer to a given position.
+		/// </summary>
+		/// <returns>True if successful. False otherwise</returns>
+		bool SetInstructionPointer(string filename, int line, int column);
+		
 		/// <summary>
 		/// Ocurrs after the debugger has started.
 		/// </summary>