meowlang/typechecker/types/GenericFunctionTypeDescription.cs

namespace meowlang.typechecker;

public record GenericFunctionTypeDescription : GenericTypeDescription
{
    private readonly List<GenericTypeId> _parameters;
    private readonly List<GenericTypeId> _returns;

    public GenericFunctionTypeDescription(List<string> genericNames, List<GenericTypeId> parameters, List<GenericTypeId> returns) : base(genericNames)
    {
        _parameters = parameters;
        _returns = returns;
    }
    
    
    public override FunctionTypeDescription Concretize(List<Guid> typeParams)
    {
        var parameters = _parameters.Select(x => ConcretizeGenericType(x, typeParams)).ToList();
        var returns = _returns.Select(x => ConcretizeGenericType(x, typeParams)).ToList();
        return new FunctionTypeDescription(parameters, returns);
    }
};