Files
tree-sitter-nix-shell/grammar.js
2023-07-04 08:57:44 +00:00

32 lines
937 B
JavaScript

module.exports = grammar({
name: 'nixshell',
rules: {
source_file: $ => seq($.first_line, repeat($.next_line)),
first_line: $ => seq($.shebang_open, $.opt_ws, optional(seq($.env, $.ws)), $.nix_shell),
next_line: $ => seq($.newline, choice(
$.annotation_line,
// TODO: capture this
repeat(/./),
)),
annotation_line: $ => seq($.shebang_open, $.opt_ws, $.nix_shell, $.nix_shell_args),
// payload_next_line: $ => /\n.*/,
// payload_line: $ => /.*/,
// payload_line: $ => repeat(/./),
// nix_shell_directive_open: $ => '#!nix-shell',
// TODO: actually parse nix-shell arguments
nix_shell_args: $ => ' -i bash',
// TODO: hide these (prefix with underscore)
shebang_open: $ => '#!',
// TODO: allow `usr/bin/env`, `env`
env: $ => '/usr/bin/env',
nix_shell: $ => 'nix-shell',
ws: $ => / +/,
opt_ws: $ => / */,
newline: $ => '\n',
}
});