go to definition now works for parameters too

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@273 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

src/Libraries/NRefactory/Project/Src/Parser/CSharp/cs.ATG

@@ -976,13 +976,14 @@ FixedParameter<out ParameterDeclarationExpression p>
 (.
 	TypeReference type;
 	ParamModifier mod = ParamModifier.In;
+	System.Drawing.Point start = t.Location;
 .)
 =
 	[
 		"ref"    (. mod = ParamModifier.Ref; .)
 		| "out"  (. mod = ParamModifier.Out; .)
 	]
-	Type<out type> ident (. p = new ParameterDeclarationExpression(type, t.val, mod); .)
+	Type<out type> ident (. p = new ParameterDeclarationExpression(type, t.val, mod); p.StartLocation = start; p.EndLocation = t.Location; .)
 .
 
 ParameterArray<out ParameterDeclarationExpression p>

src/Main/Base/Project/Src/Dom/NRefactoryResolver/NRefactoryASTConvertVisitor.cs

@@ -386,7 +386,7 @@ namespace ICSharpCode.SharpDevelop.Dom.NRefactoryResolver
 		IParameter CreateParameter(AST.ParameterDeclarationExpression par, IMethod method)
 		{
 			IReturnType parType = CreateReturnType(par.TypeReference, method);
-			DefaultParameter p = new DefaultParameter(par.ParameterName, parType, null);
+			DefaultParameter p = new DefaultParameter(par.ParameterName, parType, new DefaultRegion(par.StartLocation, par.EndLocation));
 			p.Modifiers = (ParameterModifiers)par.ParamModifier;
 			return p;
 		}

src/Main/Base/Project/Src/Dom/ResolveResult.cs

@@ -210,10 +210,12 @@ namespace ICSharpCode.SharpDevelop.Dom
 				return null;
 			}
 			IRegion reg = field.Region;
-			if (reg != null)
+			if (reg != null) {
 				return new FilePosition(cu.FileName, new Point(reg.BeginLine, reg.BeginColumn));
-			else
+			} else {
+				Console.WriteLine("Fieldregion not set!");
 				return new FilePosition(cu.FileName, Point.Empty);
+			}
 		}
 	}
 	#endregion