56 lines
1.1 KiB
JavaScript
56 lines
1.1 KiB
JavaScript
module.exports = grammar({
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name: "d2",
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externals: ($) => [$._identifier],
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rules: {
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// TODO: add the actual grammar rules
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source_file: ($) => repeat($._definition),
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_definition: ($) => choice($.connection, $.shape),
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_end: ($) => choice(";", "\n"),
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connection: ($) =>
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seq(
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$.identifier,
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choice(
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seq(seq($.arrow, $.identifier, ":", $.label)),
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seq(repeat1(seq($.arrow, $.identifier)))
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),
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$._end
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),
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shape: ($) =>
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seq(
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$.identifier,
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repeat(seq($.dot, $.identifier)),
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optional(seq(":", $.label)),
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$._end
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),
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dot: ($) => ".",
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label: ($) => choice($.string, $._unquoted_string),
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identifier: ($) => $._identifier,
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arrow: ($) =>
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choice(
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seq("--", repeat("-")),
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seq("<-", repeat("-")),
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seq("<-", repeat("-"), ">"),
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seq(repeat("-"), "->")
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),
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_unquoted_string: ($) => /[^\n;{]+/,
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string: ($) =>
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choice(
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seq("'", repeat(token(/[^'\n]+/)), "'"),
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seq('"', repeat(token(/[^'\n]+/)), '"'),
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seq("`", repeat(token(/[^'\n]+/)), "`")
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),
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},
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});
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