Use explicit interface implementation in ResolveVisitor to make it clear what the public API is supposed to be.

Added support for QueryJoinClause and QueryOrderClause to the resolver.

ICSharpCode.NRefactory.Tests/CSharp/Parser/Expression/QueryExpressionTests.cs

@@ -313,5 +313,52 @@ select new { c.Name, o.OrderID, o.Total }",
 						}
 					}});
 		}
+		
+		[Test]
+		public void QueryWithJoin()
+		{
+			ParseUtilCSharp.AssertExpression(
+				"from a in b join c in d on e equals f select g",
+				new QueryExpression {
+					Clauses = {
+						new QueryFromClause {
+							Identifier = "a",
+							Expression = new IdentifierExpression("b")
+						},
+						new QueryJoinClause {
+							JoinIdentifier = "c",
+							InExpression = new IdentifierExpression("d"),
+							OnExpression = new IdentifierExpression("e"),
+							EqualsExpression = new IdentifierExpression("f")
+						},
+						new QuerySelectClause {
+							Expression = new IdentifierExpression("g")
+						}
+					}});
+		}
+		
+		[Test]
+		public void QueryWithGroupJoin()
+		{
+			ParseUtilCSharp.AssertExpression(
+				"from a in b join c in d on e equals f into g select h",
+				new QueryExpression {
+					Clauses = {
+						new QueryFromClause {
+							Identifier = "a",
+							Expression = new IdentifierExpression("b")
+						},
+						new QueryJoinClause {
+							JoinIdentifier = "c",
+							InExpression = new IdentifierExpression("d"),
+							OnExpression = new IdentifierExpression("e"),
+							EqualsExpression = new IdentifierExpression("f"),
+							IntoIdentifier = "g"
+						},
+						new QuerySelectClause {
+							Expression = new IdentifierExpression("h")
+						}
+					}});
+		}
 	}
 }

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

@@ -216,10 +216,10 @@ class Program {
 	static void T(ref int y) {}
 }";
 			
-			InvocationResolveResult mrr = Resolve<InvocationResolveResult>(program, "T(a)");
+			InvocationResolveResult mrr = Resolve<InvocationResolveResult>(program.Replace("T(a)", "$T(a)$"));
 			Assert.IsFalse(mrr.Member.Parameters[0].IsRef);
 			
-			mrr = Resolve<InvocationResolveResult>(program, "T(ref a)");
+			mrr = Resolve<InvocationResolveResult>(program.Replace("T(ref a)", "$T(ref a)$"));
 			Assert.IsTrue(mrr.Member.Parameters[0].IsRef);
 		}
 		

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

@@ -26,7 +26,7 @@ namespace ICSharpCode.NRefactory.CSharp.Resolver
 	public class LinqTests : ResolverTestBase
 	{
 		[Test]
-		public void SimpleLinqTest()
+		public void SimpleLinq()
 		{
 			string program = @"using System; using System.Linq;
 class TestClass {
@@ -51,7 +51,7 @@ class TestClass {
 		}
 		
 		[Test]
-		public void LinqGroupTest()
+		public void Group()
 		{
 			string program = @"using System; using System.Linq;
 class TestClass {
@@ -71,7 +71,7 @@ class TestClass {
 		}
 		
 		[Test]
-		public void LinqQueryableGroupTest()
+		public void QueryableGroup()
 		{
 			string program = @"using System; using System.Linq;
 class TestClass {
@@ -91,7 +91,7 @@ class TestClass {
 		}
 		
 		[Test]
-		public void ParenthesizedLinqTest()
+		public void Parenthesized()
 		{
 			string program = @"using System; using System.Linq;
 class TestClass {
@@ -100,13 +100,14 @@ class TestClass {
 	}
 }
 ";
-			ResolveResult rr = Resolve<ResolveResult>(program);
+			var rr = Resolve<InvocationResolveResult>(program);
+			Assert.AreEqual("System.Linq.Enumerable.Select", rr.Member.FullName);
 			Assert.AreEqual("System.Collections.Generic.IEnumerable", rr.Type.FullName);
 			Assert.AreEqual("System.Int32", ((ParameterizedType)rr.Type).TypeArguments[0].FullName);
 		}
 		
 		[Test]
-		public void LinqSelectReturnTypeTest()
+		public void SelectReturnType()
 		{
 			string program = @"using System;
 class TestClass { static void M() {
@@ -115,12 +116,13 @@ class TestClass { static void M() {
 class XYZ {
 	public int Select<U>(Func<string, U> f) { return 42; }
 }";
-			ResolveResult rr = Resolve<ResolveResult>(program);
+			var rr = Resolve<InvocationResolveResult>(program);
+			Assert.AreEqual("XYZ.Select", rr.Member.FullName);
 			Assert.AreEqual("System.Int32", rr.Type.FullName);
 		}
 		
 		[Test]
-		public void LinqQueryContinuationTest()
+		public void Continuation()
 		{
 			string program = @"using System; using System.Linq;
 class TestClass {
@@ -147,5 +149,140 @@ class TestClass {
 			lrr = Resolve<LocalResolveResult>(program.Replace("r.ToString", "$r$.ToString"));
 			Assert.AreEqual("System.Collections.Generic.IEnumerable`1[[System.Int32]]", lrr.Type.ReflectionName);
 		}
+		
+		[Test]
+		public void OrderingWithSelectCall()
+		{
+			string program = @"using System; using System.Linq;
+class TestClass {
+	void Test(string[] input) {
+		$var$ r = from x in input
+			orderby x.Length
+			select x + x;
+	}
+}
+";
+			TypeResolveResult rr = Resolve<TypeResolveResult>(program);
+			Assert.AreEqual("System.Collections.Generic.IEnumerable`1[[System.String]]", rr.Type.ReflectionName);
+		}
+		
+		[Test]
+		public void OrderingWithoutSelectCall()
+		{
+			string program = @"using System; using System.Linq;
+class TestClass {
+	void Test(string[] input) {
+		$var$ r = from x in input
+			orderby x.Length
+			select x;
+	}
+}
+";
+			TypeResolveResult rr = Resolve<TypeResolveResult>(program);
+			Assert.AreEqual("System.Linq.IOrderedEnumerable`1[[System.String]]", rr.Type.ReflectionName);
+		}
+		
+		[Test]
+		public void OrderingWithSelectCallDueToSecondRangeVariable1()
+		{
+			string program = @"using System; using System.Linq;
+class TestClass {
+	void Test(string[] input) {
+		$var$ r = from x in input
+			from y in input
+			orderby x.Length
+			select x;
+	}
+}
+";
+			TypeResolveResult rr = Resolve<TypeResolveResult>(program);
+			Assert.AreEqual("System.Collections.Generic.IEnumerable`1[[System.String]]", rr.Type.ReflectionName);
+		}
+		
+		[Test]
+		public void OrderingWithSelectCallDueToSecondRangeVariable2()
+		{
+			string program = @"using System; using System.Linq;
+class TestClass {
+	void Test(string[] input) {
+		$var$ r = from x in input
+			join y in input on x equals y
+			orderby x.Length
+			select x;
+	}
+}
+";
+			TypeResolveResult rr = Resolve<TypeResolveResult>(program);
+			Assert.AreEqual("System.Collections.Generic.IEnumerable`1[[System.String]]", rr.Type.ReflectionName);
+		}
+		
+		[Test]
+		public void OrderingWithSelectCallDueToSecondRangeVariable3()
+		{
+			string program = @"using System; using System.Linq;
+class TestClass {
+	void Test(string[] input) {
+		$var$ r = from x in input
+			join y in input on x equals y into g
+			orderby x.Length
+			select x;
+	}
+}
+";
+			TypeResolveResult rr = Resolve<TypeResolveResult>(program);
+			Assert.AreEqual("System.Collections.Generic.IEnumerable`1[[System.String]]", rr.Type.ReflectionName);
+		}
+		
+		[Test]
+		public void OrderingWithSelectCallDueToSecondRangeVariable4()
+		{
+			string program = @"using System; using System.Linq;
+class TestClass {
+	void Test(string[] input) {
+		$var$ r = from x in input
+			let y = x
+			orderby x.Length
+			select x;
+	}
+}
+";
+			TypeResolveResult rr = Resolve<TypeResolveResult>(program);
+			Assert.AreEqual("System.Collections.Generic.IEnumerable`1[[System.String]]", rr.Type.ReflectionName);
+		}
+		
+		[Test]
+		public void DegenerateQuery()
+		{
+			string program = @"using System; using System.Linq;
+class TestClass {
+	void Test(string[] input) {
+		$var$ r = from x in input select x;
+	}
+}
+";
+			TypeResolveResult rr = Resolve<TypeResolveResult>(program);
+			Assert.AreEqual("System.Collections.Generic.IEnumerable`1[[System.String]]", rr.Type.ReflectionName);
+		}
+		
+		[Test, Ignore("lots of bugs here.. not only parser bugs")]
+		public void GroupJoinWithCustomMethod()
+		{
+			string program = @"using System;
+class TestClass { static void M(long [] args) {
+	var q = (from a in new XYZ() join b in args on a equals b into g select g);
+}}
+class XYZ {
+	public XYZ GroupJoin<T, K, R>(IEnumerable<T> f, Func<string, K> key1, Func<T, K> key2, Func<string, decimal, R> s) { return this; }
+	public int Select<U>(Func<string, U> f) { return 42; }
+}";
+			var local = Resolve<LocalResolveResult>(program.Replace("into g", "into $g$"));
+			Assert.AreEqual("System.Decimal", local.Type.FullName);
+			
+			local = Resolve<LocalResolveResult>(program.Replace("select g", "select $g$"));
+			Assert.AreEqual("System.Decimal", local.Type.FullName);
+			
+			var trr = Resolve<TypeResolveResult>(program.Replace("var", "$var$"));
+			Assert.AreEqual("XYZ", trr.Type.FullName); // because 'Select' is done as part of GroupJoin()
+		}
 	}
 }

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

@@ -391,11 +391,11 @@ class TestClass {
 	COL.ArrayList ff;
 }
 ";
-			TypeResolveResult type = Resolve<TypeResolveResult>(program, "COL.ArrayList");
+			TypeResolveResult type = Resolve<TypeResolveResult>(program.Replace("COL.ArrayList", "$COL.ArrayList$"));
 			Assert.IsNotNull(type, "COL.ArrayList should resolve to a type");
 			Assert.AreEqual("System.Collections.ArrayList", type.Type.FullName, "TypeResolveResult");
 			
-			MemberResolveResult member = Resolve<MemberResolveResult>(program, "ff");
+			MemberResolveResult member = Resolve<MemberResolveResult>(program.Replace("ff", "$ff$"));
 			Assert.AreEqual("System.Collections.ArrayList", member.Type.FullName, "the full type should be resolved");
 		}
 		

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

@@ -132,13 +132,13 @@ class C : B {
  	{}
 }
 ";
-			InvocationResolveResult mrr = Resolve<InvocationResolveResult>(program, "base(b)");
+			InvocationResolveResult mrr = Resolve<InvocationResolveResult>(program.Replace("base(b)", "$base(b)$"));
 			Assert.AreEqual("A..ctor", mrr.Member.FullName);
 			
-			mrr = Resolve<InvocationResolveResult>(program, "base(c)");
+			mrr = Resolve<InvocationResolveResult>(program.Replace("base(c)", "$base(c)$"));
 			Assert.AreEqual("B..ctor", mrr.Member.FullName);
 			
-			mrr = Resolve<InvocationResolveResult>(program, "this(0)");
+			mrr = Resolve<InvocationResolveResult>(program.Replace("this(0)", "$this(0)$"));
 			Assert.AreEqual("C..ctor", mrr.Member.FullName);
 		}
 		

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

@@ -226,11 +226,6 @@ namespace ICSharpCode.NRefactory.CSharp.Resolver
 			return (T)rr;
 		}
 		
-		protected T Resolve<T>(string code, string exprToResolve) where T : ResolveResult
-		{
-			return Resolve<T>(code.Replace(exprToResolve, "$" + exprToResolve + "$"));
-		}
-		
 		sealed class FindNodeVisitor : DepthFirstAstVisitor<object, object>
 		{
 			readonly AstLocation start;

ICSharpCode.NRefactory/CSharp/Ast/Expressions/QueryExpression.cs

@@ -312,6 +312,10 @@ namespace ICSharpCode.NRefactory.CSharp
 			}
 		}
 		
+		public Identifier IntoIdentifierToken {
+			get { return GetChildByRole(IntoIdentifierRole); }
+		}
+		
 		public override S AcceptVisitor<T, S> (IAstVisitor<T, S> visitor, T data)
 		{
 			return visitor.VisitQueryJoinClause (this, data);

ICSharpCode.NRefactory/CSharp/Parser/CSharpParser.cs

@@ -2889,7 +2889,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				var location = LocationsBag.GetLocations (join);
 				result.AddChild (new CSharpTokenNode (Convert (join.Location), "join".Length), QueryJoinClause.JoinKeywordRole);
 				
-				result.AddChild (Identifier.Create (join.JoinVariable.Name, Convert (join.JoinVariable.Location)), Identifier.Roles.Identifier);
+				result.AddChild (Identifier.Create (join.JoinVariable.Name, Convert (join.JoinVariable.Location)), QueryJoinClause.JoinIdentifierRole);
 				
 				if (location != null)
 					result.AddChild (new CSharpTokenNode (Convert (location[0]), "in".Length), QueryJoinClause.InKeywordRole);
@@ -2913,7 +2913,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				var location = LocationsBag.GetLocations (join);
 				result.AddChild (new CSharpTokenNode (Convert (join.Location), "join".Length), QueryJoinClause.JoinKeywordRole);
 				
-				result.AddChild (Identifier.Create (join.JoinVariable.Name, Convert (join.JoinVariable.Location)), Identifier.Roles.Identifier);
+				result.AddChild (Identifier.Create (join.JoinVariable.Name, Convert (join.JoinVariable.Location)), QueryJoinClause.JoinIdentifierRole);
 				
 				if (location != null)
 					result.AddChild (new CSharpTokenNode (Convert (location[0]), "in".Length), QueryJoinClause.InKeywordRole);
@@ -2932,7 +2932,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				if (location != null)
 					result.AddChild (new CSharpTokenNode (Convert (location[3]), "into".Length), QueryJoinClause.IntoKeywordRole);
 				
-				result.AddChild (Identifier.Create (join.JoinVariable.Name, Convert (join.JoinVariable.Location)), Identifier.Roles.Identifier);
+				result.AddChild (Identifier.Create (join.JoinVariable.Name, Convert (join.JoinVariable.Location)), QueryJoinClause.IntoIdentifierRole);
 				return result;
 			}
 			

ICSharpCode.NRefactory/CSharp/Refactoring/TypeSystemAstBuilder.cs

@@ -161,13 +161,9 @@ namespace ICSharpCode.NRefactory.CSharp.Refactoring
 			// (anything is better than displaying a question mark)
 			KnownTypeReference knownType = typeRef as KnownTypeReference;
 			if (knownType != null) {
-				PrimitiveType primitiveType;
-				if (knownType.TypeCode == TypeCode.Empty)
-					primitiveType = new PrimitiveType("void");
-				else
-					primitiveType = ConvertPrimitiveType(knownType.TypeCode);
-				if (primitiveType != null)
-					return primitiveType;
+				string keyword = ReflectionHelper.GetCSharpNameByTypeCode(knownType.TypeCode);
+				if (keyword != null)
+					return new PrimitiveType(keyword);
 			}
 			SimpleTypeOrNamespaceReference str = typeRef as SimpleTypeOrNamespaceReference;
 			if (str != null) {
@@ -187,50 +183,15 @@ namespace ICSharpCode.NRefactory.CSharp.Refactoring
 			return new SimpleType("?");
 		}
 		
-		PrimitiveType ConvertPrimitiveType(TypeCode typeCode)
-		{
-			switch (typeCode) {
-				case TypeCode.Object:
-					return new PrimitiveType("object");
-				case TypeCode.Boolean:
-					return new PrimitiveType("bool");
-				case TypeCode.Char:
-					return new PrimitiveType("char");
-				case TypeCode.SByte:
-					return new PrimitiveType("sbyte");
-				case TypeCode.Byte:
-					return new PrimitiveType("byte");
-				case TypeCode.Int16:
-					return new PrimitiveType("short");
-				case TypeCode.UInt16:
-					return new PrimitiveType("ushort");
-				case TypeCode.Int32:
-					return new PrimitiveType("int");
-				case TypeCode.UInt32:
-					return new PrimitiveType("uint");
-				case TypeCode.Int64:
-					return new PrimitiveType("long");
-				case TypeCode.UInt64:
-					return new PrimitiveType("ulong");
-				case TypeCode.Single:
-					return new PrimitiveType("float");
-				case TypeCode.Double:
-					return new PrimitiveType("double");
-				case TypeCode.Decimal:
-					return new PrimitiveType("decimal");
-				case TypeCode.String:
-					return new PrimitiveType("string");
-				default:
-					return null;
-			}
-		}
-		
 		AstType ConvertTypeHelper(ITypeDefinition typeDef, IList<IType> typeArguments)
 		{
 			Debug.Assert(typeArguments.Count >= typeDef.TypeParameterCount);
-			PrimitiveType primitiveType = ConvertPrimitiveType(ReflectionHelper.GetTypeCode(typeDef));
-			if (primitiveType != null)
-				return primitiveType;
+			TypeCode typeCode = ReflectionHelper.GetTypeCode(typeDef);
+			if (typeCode != TypeCode.Empty) {
+				string keyword = ReflectionHelper.GetCSharpNameByTypeCode(typeCode);
+				if (keyword != null)
+					return new PrimitiveType(keyword);
+			}
 			// There is no type code for System.Void
 			if (typeDef.Kind == TypeKind.Void)
 				return new PrimitiveType("void");

ICSharpCode.NRefactory/CSharp/Resolver/Log.cs

@@ -35,7 +35,7 @@ namespace ICSharpCode.NRefactory.CSharp.Resolver
 	/// </summary>
 	static class Log
 	{
-		const bool logEnabled = false;
+		const bool logEnabled = true;
 		
 		[Conditional(logEnabled ? "DEBUG" : "LOG_DISABLED")]
 		internal static void WriteLine(string text)

ICSharpCode.NRefactory/TypeSystem/KnownTypeReference.cs

@@ -150,5 +150,10 @@ namespace ICSharpCode.NRefactory.TypeSystem
 		public string Name {
 			get { return ReflectionHelper.GetShortNameByTypeCode(typeCode); }
 		}
+		
+		public override string ToString()
+		{
+			return ReflectionHelper.GetCSharpNameByTypeCode(typeCode) ?? (this.Namespace + "." + this.Name);
+		}
 	}
 }

ICSharpCode.NRefactory/TypeSystem/ReflectionHelper.cs

@@ -226,6 +226,12 @@ namespace ICSharpCode.NRefactory.TypeSystem
 			"Single", "Double", "Decimal", "DateTime", null, "String"
 		};
 		
+		static readonly string[] csharpTypeNamesByTypeCode = {
+			"void", "object", null, "bool", "char",
+			"sbyte", "byte", "short", "ushort", "int", "uint", "long", "ulong",
+			"float", "double", "decimal", null, null, "string"
+		};
+		
 		internal static int ByTypeCodeArraySize {
 			get { return typeNamesByTypeCode.Length; }
 		}
@@ -235,6 +241,11 @@ namespace ICSharpCode.NRefactory.TypeSystem
 			return typeNamesByTypeCode[(int)typeCode];
 		}
 		
+		internal static string GetCSharpNameByTypeCode(TypeCode typeCode)
+		{
+			return csharpTypeNamesByTypeCode[(int)typeCode];
+		}
+		
 		/// <summary>
 		/// Gets the type code for the specified type, or TypeCode.Empty if none of the other type codes matches.
 		/// </summary>