HEdit allows you to define custom file formats to support syntax highlighting.

For other example file formats, see one of the files in src/js/format.

• Groups usage

  new Format()
      .group('Group 1')
          .uint8('A byte')
          .group('Group 2')
              .uint8('Another byte')
          .endgroup()
          .uint8('A final byte')
      .endgroup();

  This produces spans with the following names:

  'Group 1 > A byte'
  'Group 1 > Group 2 > Another byte'
  'Group 1 > A final byte'

• Nested formats

  const c = new Format().uint('Nested byte');
  new Format()
      .child('Parent', c);

  This produces spans with the following names:

  'Parent > Nested byte'

• Combinators

  const c = new Format().uint8('Nested byte');
  new Format()
      .array('Array of bytes', 3, c);

  This produces spans with the following names:

  'Array of bytes > Nested byte'
  'Array of bytes > Nested byte'
  'Array of bytes > Nested byte'

• Pascal-like string

  new Format()
      .uint8('String length', 'orange', 'len')
      .array('String contents', 'len', 'blue');