angstrom
parser
angstrom | parser | |
---|---|---|
3 | 4 | |
616 | 5 | |
1.3% | - | |
0.0 | 6.6 | |
4 months ago | 22 days ago | |
OCaml | TypeScript | |
GNU General Public License v3.0 or later | MIT License |
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angstrom
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Anyone have suggestions on how to parse recursive grammar elements with a parser generator?
Looking at the angstrom reference here I've explored a few ideas but none of them work.
- Parser Combinators in Haskell
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Is Ocaml From the beginning a good book? Where to learn about multicore Ocaml? Is this a good project skeleton?
Do you specifically need an LR(1) parser? If you just need to do some simple parsing, a parser combinator library like Angstrom works fine and is completely defined in OCaml code: https://github.com/inhabitedtype/angstrom
parser
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Ramda: A practical functional library for JavaScript programmers
I find straight forward, dedicated combinators much more readable and practical to use ie. for iterables (context where it makes a lot of sense) [0] example [1], runtime assertions (through refutations, which are much faster than combinators over assertions) [2], parser combinators for smallish grammars [3] etc.
In many cases vanilla/imperative js is more readable and terse, no need to bring functional fanaticism everywhere, just in places where it gives true benefits and in form that can be understood by peers.
Functional code can be beautiful and can also be unreadable/undebugable. Same with imperative code. It's great in js/ts you can pick approach where the problem is expressed more naturally and mix it at will.
[0] https://github.com/preludejs/generator
[1] https://observablehq.com/@mirek/project-euler
[2] https://github.com/preludejs/refute
[3] https://github.com/preludejs/parser
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Parsing Text with Nom
Parser combinators are great, we're using parser combinators in production, they are great ie. for typescript [0].
[0] https://github.com/preludejs/parser
- Parser Combinators in Haskell
- Casual Parsing in JavaScript
What are some alternatives?
ocaml-parsing - Boilerplate code for writing parsers in OCaml using Menhir + sedlex
instaparse
comby - A code rewrite tool for structural search and replace that supports ~every language.
pyparsing - Python library for creating PEG parsers
generator - Generator module.
assert-combinators - Functional assertion combinators.
three-pass-compiler - Solution to the Three Pass Compiler kata on CodeWars, parsing and manipulating a very simple AST
morbig - A static parser for POSIX Shell
parser-combinators - Parser combinators.
multicore-opam - OPAM repo for OCaml multicore development
httpaf - A high performance, memory efficient, and scalable web server written in OCaml