public virtual TypeNode/*!*/ GetTemplateInstance(Module module, TypeNode referringType, TypeNode declaringType, TypeNodeList templateArguments)
{
TypeNodeList templateParameters = this.TemplateParameters;
if(module == null || templateArguments == null || (declaringType == null && (templateParameters == null || templateParameters.Count == 0)))
return this;
if(this.IsGeneric)
{
referringType = null;
module = TypeNode.cachingModuleForGenericInstances;
}
bool notFullySpecialized;
Identifier/*!*/ uniqueMangledName;
Identifier mangledName = this.GetMangledTemplateInstanceName(templateArguments, out uniqueMangledName, out notFullySpecialized);
TypeNode result;
Identifier dummyId;
this.TryToFindExistingInstance(module, declaringType, templateArguments, mangledName, uniqueMangledName, out result, out dummyId);
if(result != null)
return result;
if(this.NewTemplateInstanceIsRecursive)
return this; //An instance of this template is trying to instantiate the template again
lock(Module.GlobalLock)
{
Identifier unusedMangledName;
this.TryToFindExistingInstance(module, declaringType, templateArguments, mangledName, uniqueMangledName, out result, out unusedMangledName);
if(result != null)
return result;
//^ assume unusedMangledName != null;
TypeNodeList consolidatedTemplateArguments =
declaringType == null ? templateArguments : declaringType.GetConsolidatedTemplateArguments(templateArguments);
Duplicator duplicator = new Duplicator(module, referringType);
duplicator.RecordOriginalAsTemplate = true;
duplicator.SkipBodies = true;
duplicator.TypesToBeDuplicated[this.UniqueKey] = this;
result = duplicator.VisitTypeNode(this, unusedMangledName, consolidatedTemplateArguments, this.Template == null ? this : this.Template, true);
//^ assume result != null;
if(module == this.DeclaringModule)
{
if(this.TemplateInstances == null)
this.TemplateInstances = new TypeNodeList();
this.TemplateInstances.Add(result);
}
result.Name = unusedMangledName;
result.Name.SourceContext = this.Name.SourceContext;
result.fullName = null;
if(this.IsGeneric)
result.DeclaringModule = this.DeclaringModule;
result.DeclaringType = this.IsGeneric || referringType == null ? declaringType : referringType;
result.Template = this;
result.templateParameters = new TypeNodeList();
result.consolidatedTemplateParameters = new TypeNodeList();
result.templateArguments = templateArguments;
result.consolidatedTemplateArguments = consolidatedTemplateArguments;
result.IsNotFullySpecialized = notFullySpecialized || (declaringType != null && declaringType.IsNotFullySpecialized);
module.StructurallyEquivalentType[unusedMangledName.UniqueIdKey] = result;
module.StructurallyEquivalentType[uniqueMangledName.UniqueIdKey] = result;
Specializer specializer = new Specializer(module, this.ConsolidatedTemplateParameters, consolidatedTemplateArguments);
specializer.VisitTypeNode(result);
TypeFlags visibility = this.Flags & TypeFlags.VisibilityMask;
for(int i = 0, m = templateArguments.Count; i < m; i++)
{
TypeNode t = templateArguments[i];
if(t == null)
continue;
if(t is TypeParameter || t is ClassParameter || t.IsNotFullySpecialized)
continue;
visibility = TypeNode.GetVisibilityIntersection(visibility, t.Flags & TypeFlags.VisibilityMask);
}
result.Flags &= ~TypeFlags.VisibilityMask;
result.Flags |= visibility;
if(this.IsGeneric)
return result;
return result;
}
}