Hi Edward
IIRC my main stumbling block was understanding the gap between
'concrete' uses of the importer subclasses (sorry, haven't got the exact
name to hand) and the possibilities given by the more abstract superclass.
I was able to make a start by basing my work on a similar subclass, but
when that was not quite right it was a bit tricky to work out where to
look, whether there was an as-yet unused facility provided by the
superclass, etc.
I'm not complaining, I didn't spend long on it and in part I was reminded
that I need to be clear in my own mind about what I wanted the output to
be!...
Regards, J^n
On Monday, November 15, 2021 at 4:20:53 PM UTC Edward K. Ream wrote:
> On Mon, Nov 15, 2021 at 8:17 AM jkn <[email protected]> wrote:
>
>> I'll watch this with interest, if only because one project for my
>> 'copious free time' is adding an importer for a QnD note-taking format I
>> use myself.
>>
>> I started on this a while ago but got a bit bogged down in the details of
>> the current mechanism, and have never got back to it (typical!)
>>
>
> Thanks for this note. There was a serious bug in the base Importer class,
> in the undent method. Other than that, all changes should be to the
> Py_Importer subclass.
>
> All importers use the same basic strategy. Each importer handles the input
> line-by-line. The tokenizer subclasses know all about tokens such as
> strings and multi-line comments. Tokenizing each line is essential to avoid
> mistaking strings for syntactic entities.
>
> The main line of each importer is the gen_lines method. Many importers use
> the base Importer.gen_lines method. The python importer does not, because
> indentation matters so much.
>
> I am starting to get an inkling that the python version of gen_lines
> method might be simplified. I am also wondering how much processing to do
> in gen_lines and how much in the post pass. We shall see.
>
> Feel free to ask questions about your importer. Leo's importers are part
> of its crown jewels.
>
> Edward
>
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