ebnf top-level property

Language ebnf

Implementation

final ebnf = Language(
  id: "ebnf",
  refs: {
    '~contains~0': Mode(
      scope: "comment",
      begin: "\\(\\*",
      end: "\\*\\)",
      contains: [
        Mode(
          scope: "doctag",
          begin: "[ ]*(?=(TODO|FIXME|NOTE|BUG|OPTIMIZE|HACK|XXX):)",
          end: "(TODO|FIXME|NOTE|BUG|OPTIMIZE|HACK|XXX):",
          excludeBegin: true,
          relevance: 0,
        ),
        Mode(
          begin:
              "[ ]+((?:I|a|is|so|us|to|at|if|in|it|on|[A-Za-z]+['](d|ve|re|ll|t|s|n)|[A-Za-z]+[-][a-z]+|[A-Za-z][a-z]{2,})[.]?[:]?([.][ ]|[ ])){3}",
        ),
      ],
    ),
  },
  name: "Extended Backus-Naur Form",
  illegal: "\\S",
  contains: [
    ModeReference('~contains~0'),
    Mode(
      className: "attribute",
      begin: "^[ ]*[a-zA-Z]+([\\s_-]+[a-zA-Z]+)*",
    ),
    Mode(
      begin: "=",
      end: "[.;]",
      contains: [
        ModeReference('~contains~0'),
        Mode(
          className: "meta",
          begin: "\\?.*\\?",
        ),
        Mode(
          className: "string",
          variants: [
            APOS_STRING_MODE,
            QUOTE_STRING_MODE,
            Mode(
              begin: "`",
              end: "`",
            ),
          ],
        ),
      ],
    ),
  ],
);