tree-sitter-pug/grammar.js at master · RianFuro/tree-sitter-pug · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
module.exports = grammar({
  name: 'pug',
  externals: $ => [
    $._newline,
    $._indent,
    $._dedent
  ],
  rules: {
    source_file: $ => repeat(choice($.comment, $.tag)),
    tag: $ => seq(
      choice($.tag_name, $.id, $.class),
      optional(repeat(choice($.id, $.class))),
      optional($.attributes),
      optional(seq(' ', $.content)),
      $._newline,
      optional($.children),
    ),
    attributes: $ => seq(
      '(',
      repeat(seq(
        $.attribute,
        choice(',', ' ')
      )),
      optional($.attribute),
      ')',
    ),
    attribute: $ => seq(
      $.attribute_name,
      optional(seq(
        '=',
        $.quoted_attribute_value
      ))
    ),
    children: $ => choice(
      seq($._indent, repeat($.tag), $._dedent),
    ),
    comment: $ => seq(
      '//',
      optional($._comment_content),
      $._newline,
      optional(seq($._indent, repeat(seq($._comment_content, $._newline)), $._dedent))
    ),
    tag_name: $ => /\w(?:[-:\w]*\w)?/,
    class: $ => /\.[_a-z0-9\-]*[_a-z][_a-z0-9\-]*/i,
    id: $ => /#[\w-]+/,
    attribute_name: $ => /[\w@\-:]+/,
    quoted_attribute_value: $ => choice(
      seq("'", optional(alias(/[^']+/, $.attribute_value)), "'"),
      seq('"', optional(alias(/[^"]+/, $.attribute_value)), '"')
    ),
    content: $ => /[^\n]+/,
    _comment_content: $ => /[^ ][^\n]*/
  }
})