lunr.QueryParser.parsePresence = function()

in assets/js/lunr/lunr.js [3262:3297]

• 31 lines of code
• 7 McCabe index (conditional complexity)

lunr.QueryParser.parsePresence = function (parser) {
  var lexeme = parser.consumeLexeme()

  if (lexeme == undefined) {
    return
  }

  switch (lexeme.str) {
    case "-":
      parser.currentClause.presence = lunr.Query.presence.PROHIBITED
      break
    case "+":
      parser.currentClause.presence = lunr.Query.presence.REQUIRED
      break
    default:
      var errorMessage = "unrecognised presence operator'" + lexeme.str + "'"
      throw new lunr.QueryParseError (errorMessage, lexeme.start, lexeme.end)
  }

  var nextLexeme = parser.peekLexeme()

  if (nextLexeme == undefined) {
    var errorMessage = "expecting term or field, found nothing"
    throw new lunr.QueryParseError (errorMessage, lexeme.start, lexeme.end)
  }

  switch (nextLexeme.type) {
    case lunr.QueryLexer.FIELD:
      return lunr.QueryParser.parseField
    case lunr.QueryLexer.TERM:
      return lunr.QueryParser.parseTerm
    default:
      var errorMessage = "expecting term or field, found '" + nextLexeme.type + "'"
      throw new lunr.QueryParseError (errorMessage, nextLexeme.start, nextLexeme.end)
  }
}