Questions about bean HOT 4 CLOSED

Hello, it's a custom language designed for beef. It's a very simple, and limited language for describing language grammars (in bean format). Each line contains one rule, each rule must have 3 parts: left, right and name:

left right => name

left and right should be name (or names) of the rules | tokens to match, for example:

number|string add => addition_start

will expect a (number or string) on left side, and a add token on right side, if matched it will pack them in a token named addition_start.

Optionally each rule can have a meta attribute, this is used to manipulate the parse tree, for example:

number|string add => addition_start {type: left.type, lhs: left}

I made beef because I didn't want to manually make bean token | rule objects.

from bean.

So running node parser.js produces the parse tree of test.clio. How do you verify it's correct?

from bean.

We don't have any tests for now, but soon I'll add.

from bean.

I've made a csv parser using bean, the grammar file is located here:

https://github.com/pouya-eghbali/ncsv/blob/master/ncsv.beef

you can use the vscode extension to highlight it.

from bean.