Handle 'a::b' as MemberType (move aliases out of SimpleType).

ICSharpCode.NRefactory.Tests/CSharp/Resolver/SimpleNameLookupTests.cs

@@ -190,7 +190,7 @@ namespace ICSharpCode.NRefactory.CSharp.Resolver
 			Assert.AreSame(SharedTypes.UnknownType, result.Type);
 		}
 		
-		[Test, Ignore("not yet implemented (depends on distuishing types and expressions)")]
+		[Test, Ignore("not yet implemented (depends on distuishing types and expressions in the DOM)")]
 		public void PropertyNameAmbiguousWithTypeName()
 		{
 			string program = @"class A {

ICSharpCode.NRefactory/CSharp/Dom/GeneralScope/UsingDeclaration.cs

@@ -55,16 +55,15 @@ namespace ICSharpCode.NRefactory.CSharp
 			MemberType m = import as MemberType;
 			if (m != null && !m.TypeArguments.Any()) {
 				AppendName(b, m.Target);
-				b.Append('.');
+				if (m.IsDoubleColon)
+					b.Append("::");
+				else
+					b.Append('.');
 				b.Append(m.Identifier);
 				return true;
 			}
 			SimpleType t = import as SimpleType;
 			if (t != null && !t.TypeArguments.Any()) {
-				if (t.IsQualifiedWithAlias) {
-					b.Append(t.AliasIdentifier.Name);
-					b.Append("::");
-				}
 				b.Append(t.Identifier);
 				return true;
 			}

ICSharpCode.NRefactory/CSharp/Dom/MemberType.cs

@@ -38,6 +38,8 @@ namespace ICSharpCode.NRefactory.CSharp
 			}
 		}
 		
+		public bool IsDoubleColon { get; set; }
+		
 		public DomNode Target {
 			get { return GetChildByRole(Roles.TargetExpression) ?? DomNode.Null; }
 		}

ICSharpCode.NRefactory/CSharp/Dom/SimpleType.cs

@@ -32,29 +32,12 @@ namespace ICSharpCode.NRefactory.CSharp
 {
 	public class SimpleType : DomNode
 	{
-		public const int AliasRole = 100;
-		
 		public override NodeType NodeType {
 			get {
 				return NodeType.Type;
 			}
 		}
 		
-		/// <summary>
-		/// Gets whether this simple type is qualified with an alias
-		/// </summary>
-		public bool IsQualifiedWithAlias {
-			get {
-				return GetChildByRole (AliasRole) != null;
-			}
-		}
-		
-		public Identifier AliasIdentifier {
-			get {
-				return (Identifier)GetChildByRole (AliasRole) ?? CSharp.Identifier.Null;
-			}
-		}
-		
 		public Identifier IdentifierToken {
 			get {
 				return (Identifier)GetChildByRole (Roles.Identifier) ?? CSharp.Identifier.Null;

ICSharpCode.NRefactory/CSharp/Parser/CSharpParser.cs

@@ -123,16 +123,10 @@ namespace ICSharpCode.NRefactory.CSharp
 			
 			DomNode ConvertImport (MemberName memberName)
 			{
-				if (memberName.IsDoubleColon && memberName.Left != null) {
-					// left::name
-					SimpleType t = new SimpleType();
-					t.AddChild (new Identifier (memberName.Left.Name, Convert(memberName.Location)), SimpleType.AliasRole);
-					t.AddChild (new Identifier (memberName.Name, Convert(memberName.Location)), SimpleType.Roles.Identifier);
-					// TODO type arguments
-					return t;
-				} else if (memberName.Left != null) {
+				if (memberName.Left != null) {
 					// left.name
 					MemberType t = new MemberType();
+					t.IsDoubleColon = memberName.IsDoubleColon;
 					t.AddChild (ConvertImport (memberName.Left), MemberType.Roles.TargetExpression);
 					t.AddChild (new Identifier (memberName.Name, Convert(memberName.Location)), MemberType.Roles.Identifier);
 					return t;

ICSharpCode.NRefactory/CSharp/Parser/TypeSystemConvertVisitor.cs

@@ -513,20 +513,15 @@ namespace ICSharpCode.NRefactory.CSharp
 				foreach (var ta in s.TypeArguments) {
 					typeArguments.Add(ConvertType(ta, parentTypeDefinition, parentMethodDefinition, parentUsingScope, isInUsingDeclaration));
 				}
-				if (s.IsQualifiedWithAlias) {
-					AliasNamespaceReference ar = new AliasNamespaceReference(s.AliasIdentifier.Name, parentUsingScope);
-					return new MemberTypeOrNamespaceReference(ar, s.Identifier, typeArguments, parentTypeDefinition, parentUsingScope);
-				} else {
-					if (typeArguments.Count == 0 && parentMethodDefinition != null) {
-						// SimpleTypeOrNamespaceReference doesn't support method type parameters,
-						// so we directly handle them here.
-						foreach (ITypeParameter tp in parentMethodDefinition.TypeParameters) {
-							if (tp.Name == s.Identifier)
-								return tp;
-						}
+				if (typeArguments.Count == 0 && parentMethodDefinition != null) {
+					// SimpleTypeOrNamespaceReference doesn't support method type parameters,
+					// so we directly handle them here.
+					foreach (ITypeParameter tp in parentMethodDefinition.TypeParameters) {
+						if (tp.Name == s.Identifier)
+							return tp;
 					}
-					return new SimpleTypeOrNamespaceReference(s.Identifier, typeArguments, parentTypeDefinition, parentUsingScope, isInUsingDeclaration);
 				}
+				return new SimpleTypeOrNamespaceReference(s.Identifier, typeArguments, parentTypeDefinition, parentUsingScope, isInUsingDeclaration);
 			}
 			PrimitiveType p = node as PrimitiveType;
 			if (p != null) {
@@ -567,7 +562,17 @@ namespace ICSharpCode.NRefactory.CSharp
 			}
 			MemberType m = node as MemberType;
 			if (m != null) {
-				ITypeOrNamespaceReference t = ConvertType(m.Target, parentTypeDefinition, parentMethodDefinition, parentUsingScope, isInUsingDeclaration) as ITypeOrNamespaceReference;
+				ITypeOrNamespaceReference t;
+				if (m.IsDoubleColon) {
+					SimpleType st = m.Target as SimpleType;
+					if (st != null) {
+						t = new AliasNamespaceReference(st.Identifier, parentUsingScope);
+					} else {
+						t = null;
+					}
+				} else {
+					t = ConvertType(m.Target, parentTypeDefinition, parentMethodDefinition, parentUsingScope, isInUsingDeclaration) as ITypeOrNamespaceReference;
+				}
 				if (t == null)
 					return SharedTypes.UnknownType;
 				List<ITypeReference> typeArguments = new List<ITypeReference>();