[MVUX] Code generation fails for generic types #2366

kazo0 · 2024-06-19T01:17:28Z

If I try and create a generic class and use it as a Feed property on my model, the code generation for the model fails with:

CSC : warning CS8785: Generator 'FeedsGenerator' failed to generate source. It will not contribute to the output and compilation errors may occur as a result. Exception was of type 'ArgumentException' with message 'The hintName 'mvuxtestapp.Presentation.Iterator.g.cs' contains an invalid character '<' at position 33. (Parameter 'hintName')'. [/Users/steve/src/TestApps/mvuxtestapp/mvuxtestapp/mvuxtestapp.csproj]
/Users/steve/src/TestApps/mvuxtestapp/mvuxtestapp/Presentation/MainModel.cs(21,81): warning CS8603: Possible null reference return. [/Users/steve/src/TestApps/mvuxtestapp/mvuxtestapp/mvuxtestapp.csproj]

My Model:

namespace mvuxtestapp.Presentation;

public partial record MainModel
{
    private INavigator _navigator;

    public MainModel(
        IStringLocalizer localizer,
        IOptions<AppConfig> appInfo,
        INavigator navigator)
    {
        _navigator = navigator;
        Title = "Main";
        Title += $" - {localizer["ApplicationName"]}";
        Title += $" - {appInfo?.Value?.Environment}";
    }

    public string? Title { get; }

    public IState<string> Name => State<string>.Value(this, () => string.Empty);
    public IState<Iterator<int>> Test => State<Iterator<int>>.Value(this, () => null);

    public async Task GoToSecond()
    {
        var name = await Name;
        await _navigator.NavigateViewModelAsync<SecondModel>(this, data: new Entity(name!));
    }

}

public record Iterator<T>(IImmutableList<T> Items)
{
	public int CurrentIndex { get; init; } = 0;
	public T CurrentItem => Items[CurrentIndex];
	public int Count => Items.Count;
	public bool CurrentIsLast => CurrentIndex == Items.Count - 1;
	public bool CanMoveNext => CurrentIndex < Items.Count - 1;
	public bool CanMovePrevious => CurrentIndex > 0;

	public Iterator<T> MoveNext()
		=> CanMoveNext
			? this with { CurrentIndex = CurrentIndex + 1 }
			: this;

	public Iterator<T> MovePrevious()
		=> CanMovePrevious
			? this with { CurrentIndex = CurrentIndex - 1 }
			: this;
}