141 lines
3.1 KiB
JavaScript
141 lines
3.1 KiB
JavaScript
module.exports = grammar({
|
|
name: "d2",
|
|
|
|
// TODO: handle empty lines
|
|
extras: ($) => [],
|
|
|
|
word: ($) => $._word,
|
|
|
|
rules: {
|
|
source_file: ($) => repeat($._definition),
|
|
|
|
_definition: ($) =>
|
|
choice($._end, $._root_attribute, $.connection, $.shape),
|
|
|
|
connection: ($) =>
|
|
seq(
|
|
$.identifier,
|
|
repeat1(seq($.arrow, $.identifier)),
|
|
optional(
|
|
choice(seq($.dot, $._connection_attribute), seq($._colon, $.label))
|
|
),
|
|
$._end
|
|
),
|
|
|
|
shape: ($) =>
|
|
seq(
|
|
$.identifier,
|
|
repeat(seq($.dot, $.identifier)),
|
|
optional(
|
|
choice(seq($.dot, $._shape_attribute), seq($._colon, $.label))
|
|
),
|
|
$._end
|
|
),
|
|
|
|
identifier: ($) => $._identifier,
|
|
|
|
label: ($) => choice($.string, $._unquoted_string),
|
|
|
|
attr_value: ($) => choice($.string, $._unquoted_string),
|
|
|
|
_root_attribute: ($) =>
|
|
seq(alias($._root_attr_key, $.attr_key), $._colon, $.attr_value, $._end),
|
|
|
|
_root_attr_key: ($) => "direction",
|
|
|
|
_style_attribute: ($) =>
|
|
seq(
|
|
alias("style", $.attr_key),
|
|
$.dot,
|
|
alias($._style_attr_key, $.attr_key),
|
|
$._colon,
|
|
$.attr_value
|
|
),
|
|
|
|
_shape_attribute: ($) =>
|
|
choice(
|
|
seq(alias($._shape_attr_key, $.attr_key), $._colon, $.attr_value),
|
|
$._style_attribute
|
|
),
|
|
|
|
_connection_attribute: ($) =>
|
|
seq(alias($._connection_attr_key, $.attr_key), $._colon, $.attr_value),
|
|
|
|
_shape_attr_key: ($) =>
|
|
choice(
|
|
"shape",
|
|
"label",
|
|
// sql
|
|
"constraint",
|
|
// image
|
|
"icon",
|
|
"width",
|
|
"height"
|
|
),
|
|
|
|
_style_attr_key: ($) =>
|
|
choice(
|
|
"opacity",
|
|
"fill",
|
|
"stroke",
|
|
"stroke-width",
|
|
"stroke-dash",
|
|
"border-radius",
|
|
"font-color",
|
|
"shadow",
|
|
"multiple",
|
|
"animated",
|
|
"3d",
|
|
"link"
|
|
),
|
|
|
|
_text_attr_key: ($) => "near",
|
|
|
|
_connection_attr_key: ($) => choice("source-arrowhead", "target-arrowhead"),
|
|
|
|
_identifier: ($) =>
|
|
prec.right(
|
|
seq(
|
|
repeat(" "),
|
|
optional($._dash),
|
|
choice(
|
|
$._word,
|
|
repeat1(seq($._word, choice(repeat(" "), $._dash), $._word))
|
|
),
|
|
optional($._dash),
|
|
repeat(" ")
|
|
)
|
|
),
|
|
|
|
_colon: ($) => seq(repeat(" "), ":", repeat(" ")),
|
|
|
|
_word: ($) => /[\w\d]+/,
|
|
|
|
arrow: ($) =>
|
|
prec.left(
|
|
choice(
|
|
seq("--", repeat($._dash)),
|
|
seq("<-", repeat($._dash)),
|
|
seq("<-", repeat($._dash), ">"),
|
|
seq(repeat($._dash), "->")
|
|
)
|
|
),
|
|
|
|
_dash: ($) => token.immediate("-"),
|
|
|
|
_unquoted_string: ($) => token.immediate(/[^'"`\n;{]+/),
|
|
|
|
string: ($) =>
|
|
choice(
|
|
seq("'", repeat(token.immediate(/[^'\n]+/)), "'"),
|
|
seq('"', repeat(token.immediate(/[^"\n]+/)), '"'),
|
|
seq("`", repeat(token.immediate(/[^`\n]+/)), "`")
|
|
),
|
|
|
|
_eof: ($) => choice("\n", "\0"),
|
|
_end: ($) => seq(repeat(" "), choice(";", $._eof)),
|
|
|
|
dot: ($) => ".",
|
|
},
|
|
});
|