kdl.yaml

filetype: 'kdl'

detect:
  filename: "\\.kdl"

rules:
  # Punctuation
  - symbol.operator: '='
  - symbol.brackets: '[{}]'
  # Strings
  - constant.string:
      start: '"'
      end: '"'
      skip: '(\\\\\|\\")'
      rules:
        - constant.specialChar: '\\u[[:xdigit:]]{1,6}'
        - constant.specialChar: '\\[btnfr"\\]'
  # Raw Strings
  # These definitions are not correct, ideally `#` should be same count for both begin and end, but it should be programmable as captured \1
  # In my understanding, this is a micro editor restriction. See https://github.com/zyedidia/micro/blob/21bb61c5ff3cd4cd11adbd521657df90d50f54c7/runtime/syntax/jsonnet.yaml#L61-L78
  # So, I defined some typical cases here, supporting only for 0-3 "#"
  - constant.string:
      start: '\br"'
      end: '"'
      rules: []
  - constant.string:
      start: '\br#"'
      end: '"#'
      rules: []
  - constant.string:
      start: '\br##"'
      end: '"##'
      rules: []
  - constant.string:
      start: '\br###"'
      end: '"###'
      rules: []
  # Integer
  - constant.number: '[-+]?(\d+)'
  # Float
  - constant.number: '[-+]?(\d+)\.\d*'
  # Boolean and inf, nan without sign
  - constant.bool.true: '\btrue\b'
  - constant.bool.false: '\bfalse\b'
  # Comments
  - comment:
      start: '//'
      end: '$'
      rules:
        - todo: '(TODO|FIXME|XXX|NOTE)'
  # Slashdash comments
  # https://github.com/kdl-org/kdl/blob/de1dbd2c330c9193b836499db241787484627c3b/SPEC.md#L77-L79
  # vscode extension realizes this with lookahead and lookbehind, the regex feature cannot be used in micro
  # https://github.com/kdl-org/vscode-kdl/blob/646d7b819d72b2f0d9dd05102a305506bafa3cf6/syntaxes/kdl.tmLanguage.json#L182-L199
  # https://github.com/zyedidia/micro/issues/901#issuecomment-354931928
  # So simplified it, it means this is inaccurate
  - comment.block:
      start: '^\s*/-'
      end: '\s'
      rules: []
  - comment.block:
      start: '/-{'
      end: '}'
      rules: []