Collected template parameters of class templates.

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

src/AST/Class.cs

@@ -127,6 +127,7 @@ namespace CppSharp.AST
             IsPOD = false;
             Type = ClassType.RefType;
             Layout = new ClassLayout();
+            templateParameters = new List<Declaration>();
             specializations = new List<ClassTemplateSpecialization>();
         }
 
@@ -218,6 +219,24 @@ namespace CppSharp.AST
             }
         }
 
+        /// <summary>
+        /// If this class is a template, this list contains all of its template parameters.
+        /// <para>
+        /// <see cref="ClassTemplate"/> cannot be relied upon to contain all of them because
+        /// ClassTemplateDecl in Clang is not a complete declaration, it only serves to forward template classes.
+        /// </para>
+        /// </summary>
+        public List<Declaration> TemplateParameters
+        {
+            get
+            {
+                if (!IsDependent)
+                    throw new InvalidOperationException(
+                        "Only dependent classes have template parameters.");
+                return templateParameters;
+            }
+        }
+
         /// <summary>
         /// If this class is a template, this list contains all of its specializations.
         /// <see cref="ClassTemplate"/> cannot be relied upon to contain all of them because
@@ -274,6 +293,7 @@ namespace CppSharp.AST
             return visitor.VisitClassDecl(this);
         }
 
+        private List<Declaration> templateParameters;
         private List<ClassTemplateSpecialization> specializations;
     }
 }

src/AST/ITypePrinter.cs

@@ -38,7 +38,14 @@ namespace CppSharp.AST
             if (templateSpecializationType != null)
                 templateArgs = templateSpecializationType.Arguments;
             else
-                templateArgs = ((ClassTemplateSpecialization) ((TagType) type).Declaration).Arguments;
+            {
+                var declaration = ((TagType) type).Declaration;
+                var specialization = declaration as ClassTemplateSpecialization;
+                if (specialization == null)
+                    return string.Join(", ",
+                        ((Class) declaration).TemplateParameters.Select(t => t.Name));
+                templateArgs = ((ClassTemplateSpecialization) declaration).Arguments;
+            }
 
             var paramsList = new List<string>();
             foreach (var arg in templateArgs.Where(a => a.Kind == TemplateArgument.ArgumentKind.Type))

src/Generator/Generators/CSharp/CSharpTypePrinter.cs

@@ -579,7 +579,8 @@ namespace CppSharp.Generators.CSharp
             if (ContextKind == TypePrinterContextKind.Native)
                 return $"{GetName(@class.OriginalClass ?? @class)}.{Helpers.InternalStruct}";
 
-            return GetName(@class);
+            return $@"{GetName(@class)}{(@class.IsDependent ? $@"<{
+                string.Join(", ", @class.TemplateParameters.Select(p => p.Name))}>" : string.Empty)}";
         }
 
         public override TypePrinterResult VisitClassTemplateSpecializationDecl(

src/Generator/Passes/RenamePass.cs

@@ -146,12 +146,16 @@ namespace CppSharp.Passes
             if (specialization != null)
                 declarations.RemoveAll(d => specialization.TemplatedDecl.TemplatedDecl == d);
 
+            var @class = decl.Namespace as Class;
+            if (@class != null && @class.IsDependent)
+                declarations.AddRange(@class.TemplateParameters);
+
             var result = declarations.Any(d => d != decl && d.Name == newName);
             if (result)
                 return true;
 
             if (decl is Method && decl.IsGenerated)
-                return ((Class) decl.Namespace).GetPropertyByName(newName) != null;
+                return @class.GetPropertyByName(newName) != null;
 
             var property = decl as Property;
             if (property != null && property.Field != null)

src/Generator/Passes/ResolveIncompleteDeclsPass.cs

@@ -28,6 +28,9 @@ namespace CppSharp.Passes
                 s => !s.IsIncomplete && !template.TemplatedClass.Specializations.Contains(s)))
                 template.TemplatedClass.Specializations.Add(specialization);
 
+            if (template.TemplatedClass.TemplateParameters.Count == 0)
+                template.TemplatedClass.TemplateParameters.AddRange(template.Parameters);
+
             return true;
         }
 

src/Generator/Types/Std/Stdlib.cs

@@ -64,29 +64,29 @@ namespace CppSharp.Types.Std
             var typePrinter = new CSharpTypePrinter(ctx.Context);
             typePrinter.PushContext(TypePrinterContextKind.Native);
             if (!ctx.Parameter.Type.Desugar().IsAddress())
-                ctx.Return.Write("*({0}*) ", basicString.Visit(typePrinter));
+                ctx.Return.Write($"*({basicString.Visit(typePrinter)}*) ");
             typePrinter.PopContext();
             var allocator = ctx.Context.ASTContext.FindClass("allocator", false, true).First(
                 a => a.IsDependent && a.TranslationUnit.IsSystemHeader);
+            var allocatorChar = allocator.Specializations.First(s => !s.Ignore);
             if (type.IsPointer() || (type.IsReference() && ctx.Declaration is Field))
             {
-                ctx.Return.Write("new {0}({1}, new {2}()).{3}",
-                    basicString.Visit(typePrinter), ctx.Parameter.Name,
-                    allocator.Visit(typePrinter), Helpers.InstanceIdentifier);
+                ctx.Return.Write($@"new {basicString.Visit(typePrinter)}({
+                    ctx.Parameter.Name}, new {allocatorChar.Visit(typePrinter)}()).{
+                    Helpers.InstanceIdentifier}");
             }
             else
             {
-                string varAllocator = "__allocator" + ctx.ParameterIndex;
-                string varBasicString = "__basicString" + ctx.ParameterIndex;
-                ctx.SupportBefore.WriteLine("var {0} = new {1}();",
-                    varAllocator, allocator.Visit(typePrinter));
-                ctx.SupportBefore.WriteLine("var {0} = new {1}({2}, {3});",
-                    varBasicString, basicString.Visit(typePrinter),
-                    ctx.Parameter.Name, varAllocator);
-                ctx.Return.Write("{0}.{1}", varBasicString, Helpers.InstanceIdentifier);
-                ctx.Cleanup.WriteLine("{0}.Dispose({1});", varBasicString,
-                    type.IsPointer() ? "true" : "false");
-                ctx.Cleanup.WriteLine("{0}.Dispose();", varAllocator);
+                var varAllocator = $"__allocator{ctx.ParameterIndex}";
+                var varBasicString = $"__basicString{ctx.ParameterIndex}";
+                ctx.SupportBefore.WriteLine($@"var {varAllocator} = new {
+                    allocatorChar.Visit(typePrinter)}();");
+                ctx.SupportBefore.WriteLine($@"var {varBasicString} = new {
+                    basicString.Visit(typePrinter)}({ctx.Parameter.Name}, {varAllocator});");
+                ctx.Return.Write($"{varBasicString}.{Helpers.InstanceIdentifier}");
+                ctx.Cleanup.WriteLine($@"{varBasicString}.Dispose({
+                    (type.IsPointer() ? "true" : "false")});");
+                ctx.Cleanup.WriteLine($"{varAllocator}.Dispose();");
             }
         }