[Haskell-cafe] Locate errors in TH for Haskell code

[David Fox]

I'd like to know more about what you are doing, I feel like I've set out to
do something similar in the past and ended up going a different way.

On Sat, Nov 6, 2021 at 2:51 AM Anton Kholomiov <anton.kholomiov at gmail.com>
wrote:

> I have a task to convert one Haskell expression to another.
> And I'd like to report errors properly.
>
> [interpret|   -- error reported here
>    valid haskell code
>    invalid code           <- error
> |]
>
> I can parse it with haskell-src-exts or haskell-src-meta.
> but if I have error in the code (type-check) error is positioned on the
> first line of the QQ-expression.
>
> Do you know is it possible to report error at the line where it has
> happened or
> to keep original source code location in the Exp.
>
> In the function I do transformation Exp -> Exp.
>
> Or maybe there is a better way to do it instead of QQ?
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