Added support for decltype types.

src/CppParser/Parser.cpp

@@ -1685,6 +1685,12 @@ Type* Parser::WalkType(clang::QualType QualType, clang::TypeLoc* TL,
         // TODO: stubbed
         Ty = new PackExpansionType();
     }
+    case clang::Type::Decltype:
+    {
+        auto DT = Type->getAs<clang::DecltypeType>();
+        Ty = WalkType(DT->getUnderlyingType());
+        break;
+    }
     default:
     {   
         Debug("Unhandled type class '%s'\n", Type->getTypeClassName());

src/Parser/Parser.cpp

@@ -1693,6 +1693,12 @@ CppSharp::AST::Type^ Parser::WalkType(clang::QualType QualType, clang::TypeLoc*
         Ty = gcnew CppSharp::AST::PackExpansionType();
         break;
     }
+    case Type::Decltype:
+    {
+        auto DT = Type->getAs<clang::DecltypeType>();
+        Ty = WalkType(DT->getUnderlyingType());
+        break;
+    }
     default:
     {   
         Debug("Unhandled type class '%s'\n", Type->getTypeClassName());

tests/Basic/Basic.Tests.cs

@@ -301,6 +301,13 @@ public class BasicTests : GeneratorTestFixture
         Assert.AreEqual(classA.Value, classB.Value);
         ClassC classC = (ClassC)classB;
         Assert.AreEqual(classB.Value, classC.Value);
+    }
+
+    [Test]
+    public unsafe void TestDecltype()
+    {
+        var ret = basic.TestDecltype();
+        Assert.AreEqual(0, ret);
     }
 }
  

tests/Basic/Basic.h

@@ -447,3 +447,10 @@ public:
     explicit ClassC(const ClassB& x) { Value = x.Value; }
     int Value;
 };
+
+// Test decltype
+int Expr = 0;
+DLL_API decltype(Expr) TestDecltype()
+{
+    return Expr;
+}