lunr.QueryParser.parseBoost = function()

in assets/js/lunr/lunr.js [3414:3455]

• 35 lines of code
• 9 McCabe index (conditional complexity)

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

  if (lexeme == undefined) {
    return
  }

  var boost = parseInt(lexeme.str, 10)

  if (isNaN(boost)) {
    var errorMessage = "boost must be numeric"
    throw new lunr.QueryParseError (errorMessage, lexeme.start, lexeme.end)
  }

  parser.currentClause.boost = boost

  var nextLexeme = parser.peekLexeme()

  if (nextLexeme == undefined) {
    parser.nextClause()
    return
  }

  switch (nextLexeme.type) {
    case lunr.QueryLexer.TERM:
      parser.nextClause()
      return lunr.QueryParser.parseTerm
    case lunr.QueryLexer.FIELD:
      parser.nextClause()
      return lunr.QueryParser.parseField
    case lunr.QueryLexer.EDIT_DISTANCE:
      return lunr.QueryParser.parseEditDistance
    case lunr.QueryLexer.BOOST:
      return lunr.QueryParser.parseBoost
    case lunr.QueryLexer.PRESENCE:
      parser.nextClause()
      return lunr.QueryParser.parsePresence
    default:
      var errorMessage = "Unexpected lexeme type '" + nextLexeme.type + "'"
      throw new lunr.QueryParseError (errorMessage, nextLexeme.start, nextLexeme.end)
  }
}