Fixed the C++ type printer to handle const value types.

Signed-off-by: Dimitar Dobrev <dpldobrev@protonmail.com>

src/AST/CppTypePrinter.cs

@@ -39,7 +39,8 @@ namespace CppSharp.AST
 
         public string VisitTagType(TagType tag, TypeQualifiers quals)
         {
-            return tag.Declaration.Visit(this);
+            var qual = PrintTypeQualifiers && quals.IsConst ? "const " : string.Empty;
+            return string.Format("{0}{1}", qual, tag.Declaration.Visit(this));
         }
 
         public string VisitArrayType(ArrayType array, TypeQualifiers quals)

src/Generator.Tests/AST/TestAST.cs

@@ -408,5 +408,14 @@ namespace CppSharp.Generator.Tests.AST
             Assert.That(template.Specializations[0].Constructors.First().QualifiedName,
                 Is.Not.EqualTo(template.Specializations[1].Constructors.First().QualifiedName));
         }
+
+        [Test]
+        public void TestPrintingSpecializationWithConstValue()
+        {
+            var template = AstContext.FindDecl<ClassTemplate>("TestSpecializationArguments").First();
+            var cppTypePrinter = new CppTypePrinter { PrintScopeKind = CppTypePrintScopeKind.Qualified };
+            Assert.That(template.Specializations.Last().Visit(cppTypePrinter),
+                Is.EqualTo("TestSpecializationArguments<const TestASTEnumItemByName>"));
+        }
     }
 }

tests/Native/AST.h

@@ -154,3 +154,5 @@ class ForwardedTemplate;
 
 typedef ForwardedTemplate<int> i;
 typedef ForwardedTemplate<long> l;
+
+template class TestSpecializationArguments<const TestASTEnumItemByName>;