What grammar is used for P?

[greggirwin]

I see sections of grammar specs in the docs, but it's not a grammar I'm familiar with. I might be able to render syntax diagrams for P, but it will be easier if it's one of [ABNF EBNF McKeeman DBNF WBNF] as my tool handles those. Otherwise I'd need to translate it manually.

Side note: 20+ years ago I wrote a little FSM dialect, and finding P makes me want to dust it off. :^)

[ankushdesai]

Thanks! The grammar in the docs is an adopted version of the ANTLR grammar file here: https://github.com/p-org/P/blob/master/Src/PCompiler/CompilerCore/Parser/PParser.g4

Any help to improve the documentation would be great!

[greggirwin]

Any thoughts on the value of the diagram @ankushdesai? It can also be rendered into separate images by rule, for targeted doc inclusion.

[greggirwin]

Thanks! I forgot to check g4. We have an experimental metagrammar, but I'll have to dust things off to test.

[greggirwin]

Don't remember how to trunc the image in chat here. :^\

[greggirwin]

Can delete it if you want.

[greggirwin]

Ah, need to include the lexer rules from the separate file.

[greggirwin]

Lexer rules included. I just hadn't downloaded it. Looks much nicer now. Zipping to keep chat small. Will delete earlier image.
PParser.zip