A tree-sitter grammar for the Motoko programming language.
There is an existing grammar at https://github.com/polychromatist/tree-sitter-motoko
I wanted to re-familiarize myself with every corner of Motoko's syntax, so I decided to implement my own. The existing grammar suffers from a tree-sitter bug, which made it unsuitable for implementing parser based indentation in Emacs. This grammar works around that bug.
Additional differences:
- Doesn't require a custom scanner
- Covers some more recent syntax additions (parentheticals), and some of the weirder lexical productions
- Follows the compiler's grammar more closely by implementing parameterized expression productions.
- ~33% reduction in compiled output size
- Tested to successfully parse every .mo file in the compiler repository, as well as base