void GatherGenerics(TypeMapper typeMapper, FunctionDeclaration func, SLImportModules modules, TypeSpec type,
SLGenericTypeDeclarationCollection genericDecl, Dictionary <string, List <BaseConstraint> > redundantConstraints)
{
if (!func.IsTypeSpecGeneric(type))
{
return;
}
if (type.ContainsGenericParameters)
{
var entity = typeMapper.GetEntityForTypeSpec(type);
if (entity != null)
{
for (int i = 0; i < entity.Type.Generics.Count; i++)
{
var genDecl = entity.Type.Generics [i];
var originalGenTypeSpec = type.GenericParameters [i];
if (originalGenTypeSpec is NamedTypeSpec named)
{
var depthIndex = func.GetGenericDepthAndIndex(originalGenTypeSpec);
if (depthIndex.Item1 < 0 || depthIndex.Item2 < 0)
{
continue;
}
var genRef = new SLGenericReferenceType(depthIndex.Item1, depthIndex.Item2);
var genRefName = genRef.Name;
List <BaseConstraint> constList = null;
if (!redundantConstraints.TryGetValue(genRefName, out constList))
{
constList = new List <BaseConstraint> ();
redundantConstraints.Add(genRefName, constList);
}
constList.AddRange(genDecl.Constraints);
}
else if (originalGenTypeSpec is ClosureTypeSpec closure)
{
GatherGenerics(typeMapper, func, modules, closure.Arguments, genericDecl, redundantConstraints);
GatherGenerics(typeMapper, func, modules, closure.ReturnType, genericDecl, redundantConstraints);
}
else if (originalGenTypeSpec is TupleTypeSpec tuple)
{
foreach (var tupleSpec in tuple.Elements)
{
GatherGenerics(typeMapper, func, modules, tupleSpec, genericDecl, redundantConstraints);
}
}
}
}
foreach (var subType in type.GenericParameters)
{
GatherGenerics(typeMapper, func, modules, subType, genericDecl, redundantConstraints);
}
}
else
{
if (type is NamedTypeSpec named)
{
var depthIndex = func.GetGenericDepthAndIndex(type);
var gd = func.GetGeneric(depthIndex.Item1, depthIndex.Item2);
var genRef = new SLGenericReferenceType(depthIndex.Item1, depthIndex.Item2);
var sldecl = new SLGenericTypeDeclaration(new SLIdentifier(genRef.Name));
#if SWIFT4
if (depthIndex.Item1 >= func.GetMaxDepth())
{
sldecl.Constraints.AddRange(gd.Constraints.Select(baseConstraint =>
MethodWrapping.ToSLGenericConstraint(func, baseConstraint, genRef.ToString())
));
}
#else
sldecl.Constraints.AddRange(gd.Constraints.Select(bc => {
InheritanceConstraint inh = bc as InheritanceConstraint;
if (inh == null)
{
throw new CompilerException("Equality constraints not supported (yet)");
}
return(new SLGenericConstraint(true, new SLSimpleType(genRef.Name), parent.TypeSpecMapper.MapType(func, modules, inh.InheritsTypeSpec)));
}));
#endif
genericDecl.Add(sldecl);
}
else if (type is ClosureTypeSpec closure)
{
GatherGenerics(typeMapper, func, modules, closure.Arguments, genericDecl, redundantConstraints);
GatherGenerics(typeMapper, func, modules, closure.ReturnType, genericDecl, redundantConstraints);
}
else if (type is TupleTypeSpec tuple)
{
foreach (var tupleSpec in tuple.Elements)
{
GatherGenerics(typeMapper, func, modules, tupleSpec, genericDecl, redundantConstraints);
}
}
}
}