just for comparision

[physikerwelt]

do not merge!

[physikerwelt]

why do you need this lists.

[physikerwelt]

@notjagan I think coping from files from texvcjs is not a good idea. Why can't you add texvc as node dependency?

[notjagan]

@physikerwelt I was originally planning on having texvcjs as a dependency for texer. However, in order for me to create parsing for the macro definitions based on DRMFfcns.sty, I need to dynamically modify the files belonging to texvcjs. For example, I have to add code to parser.pegjs for each of the functions specified within the .sty file, which wouldn't be easily possible with texvcjs simply as a dependency.

[notjagan]

@physikerwelt What would you recommend in terms of the relationship between texer and texvcjs? I would like add texvcjs as a dependency so I don't have to manually transfer all the changes that I make on texvcjs over to texer, but I have to add code to texvcjs dynamically in texer. As such, I am unsure on how to treat texvcjs as it used in texer. The only idea I have right now is give texvcjs the ability to accept modifications through a function and have it deal with the changes itself.

[physikerwelt]

but I have to add code to texvcjs dynamically in texer. As such, I am unsure on how to treat texvcjs as it used in texer. The only idea I have right now is give texvcjs the ability to accept modifications through a function and have it deal with the changes itself.

In general that seems to be a good approach. But I do not understand the details.

[HowardCohl]

@notjagan Can you give @physikerwelt some details, as above?

[notjagan]

@physikerwelt As of right now, my branch of texer reads in macro definitions from DRMFfcns.sty. For example, one such declaration is \defSpecFun{HarmonicNumber}[1]{H_{#1}}[meaning=Harmonic-number]{0}. This means that whenever the pegJS code encounters something of the form H_{literal} it should render it as \HarmonicNumber{literal}. To accomplish this, I wrote code that generates pegJS rules so that this is handled when parser.js is built. In the HarmonicNumber example, the generated pegJS looks like:

"H_" space* l1:lit { return ast.Tex.HarmonicNumber1A("\\HarmonicNumber", l1); }.

In addition to generating pegJS, my code also generates JavaScript for adding rules to ast.js, astutil.js, and render.js. However, because I generate code in the base files of texvcjs, I cannot add texvcjs as a dependency in the form it is currently in. I am considering allowing texvcjs to accept new rules and modify itself, but I am unsure at the moment.

[physikerwelt]

@notjagan the question is where in the pegjs file you want to edit the new rules. If you modify one line in the texvcjs code, i.e make the location of the grammar file configureable
https://github.com/DRMF/texvcjs/blob/master/lib/build-parser.js#L4
you should be able to get quite far.
Or did I miss something?