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module.exports = grammar({
name: "yts",
rules: {
source_file: ($) => repeat(choice($.line, $.comment)),
line: ($) =>
seq($.command, repeat($.flag), $.id, $.title, $.date, $.author, $.duration, $.url, "\n"),
command: ($) => choice("pick", "p", "watch", "w", "drop", "d", "url", "u"),
flag: ($) =>
choice(
/-\w [^\s]+/,
/-\w '[^']*'/,
/-\w "[^"]*"/,
/-\w=[^\s]+/,
/-\w='[^']*'/,
/-\w="[^"]*"/,
/--\w+ [^\s]+/,
/--\w+ '[^']*'/,
/--\w+ "[^"]*"/,
/--\w+=[^\s]+/,
/--\w+='[^']*'/,
/--\w+="[^"]*"/,
),
id: ($) => /[a-z0-9]+/,
title: ($) => seq($._q, /[^"]+/, $._q),
date: ($) => seq($._q, /\d{4}-\d{2}-\d{2}/, $._q),
author: ($) => seq($._q, /[^"]+/, $._q),
duration: ($) =>
seq(
$._q,
seq(choice("[No Duration]", /\d+m \d+s/, /\d+h \d+m/)),
$._q,
),
url: ($) => seq($._q, /[^"]+/, $._q),
comment: ($) => /#.*/,
_q: ($) => $.quote,
quote: ($) => /"/,
},
extras: ($) => [/\s/],
});
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