tree-sitter-4dcatalog/grammar.js

Atom language support for 4D

module.exports = grammar({
  name: 'fourdxmlcatalog',

  extras: $ => [
    $.comment,
    /\s+/,
  ],

  externals: $ => [
    $._start_tag_name,
    $._end_tag_name,
    $.erroneous_end_tag_name,
    '/>',
    $._implicit_end_tag,
    $.raw_text,
    $.comment,
  ],

  rules: {
    fragment: $ => repeat($._node),

    doctype: $ => seq(
      '<!',
      alias($._doctype, 'doctype'),
      /[^>]+/,
      '>'
    ),

    declaration: $ => seq(
      '<?',
      alias($._xml, 'declaration'),
      /[^?>]+/,
      '?>'
    ),

    _xml: $ => /[Xx][Mm][Ll]/,

    _doctype: $ => /[Dd][Oo][Cc][Tt][Yy][Pp][Ee]/,

    _node: $ => choice(
      $.declaration,
      $.doctype,
      $.text,
      $.element,
      $.erroneous_end_tag
    ),

    element: $ => choice(
      seq(
        $.start_tag,
        repeat($._node),
        choice($.end_tag, $._implicit_end_tag)
      ),
      $.self_closing_tag
    ),

    start_tag: $ => seq(
      '<',
      alias($._start_tag_name, $.tag_name),
      repeat($.attribute),
      '>'
    ),

    self_closing_tag: $ => seq(
      '<',
      alias($._start_tag_name, $.tag_name),
      repeat($.attribute),
      '/>'
    ),

    end_tag: $ => seq(
      '</',
      alias($._end_tag_name, $.tag_name),
      '>'
    ),

    erroneous_end_tag: $ => seq(
      '</',
      $.erroneous_end_tag_name,
      '>'
    ),

    attribute: $ => seq(
      $.attribute_name,
      optional(seq(
        '=',
        choice(
          $.attribute_value,
          $.quoted_attribute_value_empty,
          $.quoted_attribute_value
        )
      ))
    ),

    attribute_name: $ => /[^<>"'/=\s]+/,

    attribute_value: $ => /[^<>"'=\s]+/,

    quoted_attribute_value: $ => choice(
      seq("'", optional(alias(/[^']+/, $.attribute_value)), "'"),
      seq('"', optional(alias(/[^"]+/, $.attribute_value)), '"')
    ),

    quoted_attribute_value_empty: $ => choice(
      seq("''"),
      seq('""')
    ),

    text: $ => /[^<>]+/
  }
});