func generateConsumer()

in Sources/_StringProcessing/ConsumerInterface.swift [502:543]

• 36 lines of code
• 15 McCabe index (conditional complexity)

  func generateConsumer(
    _ opts: MatchingOptions
  ) -> Program<String>.ConsumeFunction {
    // FIXME: semantic levels, modes, etc
    switch self {
    case .alnum:
      return consumeScalarProp {
        $0.isAlphabetic || $0.numericType != nil
      }
    case .blank:
      return consumeScalar { s in
        s.properties.generalCategory == .spaceSeparator ||
        s == "\t"
      }

    case .graph:
      return consumeScalarProp { p in
        !(
          p.isWhitespace ||
          p.generalCategory == .control ||
          p.generalCategory == .surrogate ||
          p.generalCategory == .unassigned
        )
      }
    case .print:
      return consumeScalarProp { p in
        // FIXME: better def
        p.generalCategory != .control
      }
    case .word:
      return consumeScalarProp { p in
        // FIXME: better def
        p.isAlphabetic || p.numericType != nil
        || p.isJoinControl
        || p.isDash// marks and connectors...
      }

    case .xdigit:
      return consumeScalarProp(\.isHexDigit) // or number

    }
  }