tree-sitter-tony/common/imports.js

Tony grammar for tree-sitter

const Prec = require('./precedence')
const { commaSep1 } = require('./util')

module.exports = {
  import_: ($) => seq('import', $._import_body),
  exported_import: ($) => seq('export', $._import_body),
  _import_body_constructor: (dialect) => ($) =>
    dialect === 'tony'
      ? prec.left(
          Prec.Pattern,
          seq(
            choice(
              field('default', alias($.identifier, $.identifier_pattern_name)),
              seq(
                optional(
                  seq(
                    field(
                      'default',
                      alias($.identifier, $.identifier_pattern_name),
                    ),
                    ',',
                  ),
                ),
                '{',
                commaSep1(
                  field('import', choice($.import_identifier, $.import_type)),
                ),
                '}',
              ),
            ),
            'from',
            field('source', $.raw_string),
          ),
        )
      : dialect === 'dtn'
      ? prec.left(
          Prec.Pattern,
          seq(
            '{',
            commaSep1(field('import', $.import_type)),
            '}',
            'from',
            field('source', $.raw_string),
          ),
        )
      : undefined,
  import_identifier: ($) =>
    seq(
      optional(
        seq(
          field('name', alias($.identifier, $.identifier_pattern_name)),
          'as',
        ),
      ),
      field('as', alias($.identifier, $.identifier_pattern_name)),
    ),
  import_type: ($) =>
    seq(optional(seq(field('name', $.type), 'as')), field('as', $.type)),
}