public static IRppExpr ReplaceUndefinedClosureTypesIfNeeded([NotNull] IRppExpr expr, ResolvableType targetType, IList<RType> genericArgs)
{
if (expr is RppClosure)
{
RppClosure closure = (RppClosure) expr;
var hasUndefinedClosureBinding = closure.Bindings.Any(b => b.Type.IsUndefined());
if (targetType.IsDefined() && hasUndefinedClosureBinding)
{
RType type = targetType.Value;
if (genericArgs.NonEmpty())
{
// Substitute generics parameters with specified generic arguments
// def func[A,U]()...
// func[Int, Float]()...
// Function1[!!A, !!U] -> Function1[Int, Float]
type = type.MakeGenericType(genericArgs.ToArray());
}
IReadOnlyCollection<RType> genericArguments = type.GenericArguments;
List<IRppParam> newBindings =
genericArguments.Zip(closure.Bindings,
(varTypeGenArg, binding) => binding.CloneWithNewType(varTypeGenArg)).ToList();
return new RppClosure(newBindings, closure.Expr);
}
}
return expr;
}