Fixed constructor this/base unit test.

ICSharpCode.NRefactory.CSharp/Ast/TypeMembers/ConstructorDeclaration.cs

@@ -57,6 +57,10 @@ namespace ICSharpCode.NRefactory.CSharp
 			get { return GetChildByRole (Roles.RPar); }
 		}
 		
+		public CSharpTokenNode ColonToken {
+			get { return GetChildByRole (Roles.Colon); }
+		}
+		
 		public ConstructorInitializer Initializer {
 			get { return GetChildByRole (InitializerRole); }
 			set { SetChildByRole( InitializerRole, value); }

ICSharpCode.NRefactory.CSharp/Completion/CSharpCompletionEngine.cs

@@ -730,7 +730,17 @@ namespace ICSharpCode.NRefactory.CSharp.Completion
 					return wrapper.Result;
 				}
 			}
-			
+			if (node == null) {
+				var constructor = Unit.GetNodeAt<ConstructorDeclaration> (location.Line, location.Column - 3);
+				Console.WriteLine (constructor);
+				Console.WriteLine (constructor.ColonToken.IsNull);
+				Console.WriteLine (constructor.Initializer.IsNull);
+				if (constructor != null && !constructor.ColonToken.IsNull && constructor.Initializer.IsNull) {
+					wrapper.AddCustom ("this");
+					wrapper.AddCustom ("base");
+					return wrapper.Result;
+				}
+			}
 			CSharpResolver csResolver;
 			if (node != null) {
 				var nodes = new List<AstNode> ();

ICSharpCode.NRefactory.CSharp/Completion/CSharpCompletionEngineBase.cs

@@ -175,7 +175,6 @@ namespace ICSharpCode.NRefactory.CSharp.Completion
 				if (!IsInsideType (currentType, location))
 					currentType = null;
 			}
-			
 			this.currentMember = null;
 			if (this.currentType != null) {
 				foreach (var member in currentType.Members) {
@@ -190,7 +189,6 @@ namespace ICSharpCode.NRefactory.CSharp.Completion
 				if (!IsInsideType (currentMember, location))
 					currentMember = null;
 			}
-			
 			var stack = GetBracketStack (GetMemberTextToCaret ().Item1);
 			if (stack.Count == 0)
 				currentMember = null;

ICSharpCode.NRefactory.CSharp/Parser/CSharpParser.cs

@@ -1075,14 +1075,15 @@ namespace ICSharpCode.NRefactory.CSharp
 					
 					if (initializerLocation != null)
 						newConstructor.AddChild (new CSharpTokenNode (Convert (initializerLocation[0]), 1), ConstructorDeclaration.Roles.Colon);
-					// this and base has the same length
-					initializer.AddChild (new CSharpTokenNode (Convert (c.Initializer.Location), "this".Length), ConstructorDeclaration.Roles.Keyword);
-					if (initializerLocation != null)
+					
+					if (initializerLocation != null && initializerLocation.Count > 1) {
+						// this and base has the same length
+						initializer.AddChild (new CSharpTokenNode (Convert (c.Initializer.Location), "this".Length), ConstructorDeclaration.Roles.Keyword);
 						initializer.AddChild (new CSharpTokenNode (Convert (initializerLocation[1]), 1), ConstructorDeclaration.Roles.LPar);
-					AddArguments (initializer, LocationsBag.GetLocations (c.Initializer.Arguments), c.Initializer.Arguments);
-					if (initializerLocation != null)
+						AddArguments (initializer, LocationsBag.GetLocations (c.Initializer.Arguments), c.Initializer.Arguments);
 						initializer.AddChild (new CSharpTokenNode (Convert (initializerLocation[2]), 1), ConstructorDeclaration.Roles.RPar);
-					newConstructor.AddChild (initializer, ConstructorDeclaration.InitializerRole);
+						newConstructor.AddChild (initializer, ConstructorDeclaration.InitializerRole);
+					}
 				}
 				
 				if (c.Block != null)

ICSharpCode.NRefactory.CSharp/Parser/mcs/cs-parser.jay

@@ -2256,6 +2256,12 @@ constructor_initializer
 		$$ = new ConstructorThisInitializer ((Arguments) $5, GetLocation ($2));
 		lbag.AddLocation ($$, GetLocation ($1), GetLocation ($3), GetLocation ($6));
 	  }
+	| COLON error
+	  {
+		Error_SyntaxError (yyToken);
+		$$ = new ConstructorThisInitializer (null, GetLocation ($1));
+		lbag.AddLocation ($$, GetLocation ($1));
+	  }
 	| error
 	  {
 		Error_SyntaxError (yyToken);

ICSharpCode.NRefactory.CSharp/Parser/mcs/support.cs

@@ -241,7 +241,9 @@ namespace Mono.CSharp {
 		
 		public char GetChar (int position)
 		{
-			return buffer[position];
+			if (buffer_start <= position && position < buffer.Length)
+				return buffer[position];
+			return '\0';
 		}
 		
 		public char[] ReadChars (int fromPosition, int toPosition)

ICSharpCode.NRefactory.Tests/CSharp/CodeCompletion/CodeCompletionBugTests.cs

@@ -4098,14 +4098,13 @@ namespace Test
 			});
 		}
 		
-		[Ignore("Fixme!")]
 		[Test()]
 		public void TestConstructorThisBase ()
 		{
 			CombinedProviderTest (
 @"class Program
 {
-	public Program ()$ : t$
+	public Program () : $t$
 	{
 	}
 }", provider => {