difftastic/grammar.js

94 lines
2.5 KiB
JavaScript

/*
* grammar.js
* Copyright (C) 2021 Stephan Seitz <stephan.seitz@fau.de>
* Adapted from tree-sitter-clojure
*
* Distributed under terms of the GPLv3 license.
*/
const clojure = require("tree-sitter-clojure/grammar");
const WHITESPACE_CHAR =
/[\f\n\r\t \u000B\u001C\u001D\u001E\u001F\u2028\u2029\u1680\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2008\u2009\u200a\u205f\u3000]/;
const WHITESPACE =
token(repeat1(WHITESPACE_CHAR));
module.exports = grammar(clojure, {
name: 'commonlisp',
extras: ($, original) => [...original, $.block_comment],
conflicts: (_, original) => [...original],
rules: {
block_comment: _ => token(seq('#|', repeat(choice(/[^|]/, /\|[^#]/)) ,'|#')),
fancy_literal: _ => token(seq('|', repeat(/[^|]/) ,'|')),
_ws: _ =>
WHITESPACE,
unquoting_lit: $ =>
seq(field('marker', ","),
repeat($._gap),
field('value', $._form)),
unquote_splicing_lit: $ =>
seq(repeat($._metadata_lit),
field('marker', ",@"),
repeat($._gap),
field('value', $._form)),
syn_quoting_lit: $ =>
seq(field('marker', "`"),
repeat($._gap),
field('value', $.list_lit)),
//defun_header: $ =>
//seq(field('keyword', 'defun'),
//repeat($._gap),
//field('function_name', $._form),
//repeat($._gap),
//field('lambda_list', $.list_lit)),
//
array_dimension: $ => seq($.num_lit, 'A'),
_bare_vec_lit: $ =>
choice(seq(field('open', '#0A'), $.num_lit),
seq(field('open', '#'), optional(field('dimension_indicator', $.array_dimension)), $.list_lit)),
_form: $ =>
choice(// atom-ish
$.num_lit,
$.fancy_literal,
//$.defun_header,
$.kwd_lit,
$.str_lit,
$.char_lit,
$.nil_lit,
//$.bool_lit,
$.sym_lit,
// basic collection-ish
$.list_lit,
//$.map_lit,
$.vec_lit,
// dispatch reader macros
$.set_lit,
//$.anon_fn_lit,
//$.regex_lit,
$.read_cond_lit,
$.splicing_read_cond_lit,
//$.ns_map_lit,
$.var_quoting_lit,
$.sym_val_lit,
$.evaling_lit,
//$.tagged_or_ctor_lit,
// some other reader macros
$.derefing_lit,
$.quoting_lit,
$.syn_quoting_lit,
$.unquote_splicing_lit,
$.unquoting_lit),
}
});