fun parseValues()

in vim-engine/src/main/kotlin/com/maddyhome/idea/vim/options/helpers/KeywordOptionHelper.kt [72:113]

• 37 lines of code
• 12 McCabe index (conditional complexity)

  fun parseValues(content: String): List<String>? {
    if (!validationPattern.matcher(content).matches()) {
      return null
    }
    var index = 0
    var firstCharNumOfPart = true
    var inRange = false
    val vals: MutableList<String> = ArrayList()
    var option = StringBuilder()

    // We need to split the input string into parts. However, we can't just split on a comma
    // since a comma can either be a keyword or a separator depending on its location in the string.
    while (index <= content.length) {
      var curChar = 0.toChar()
      if (index < content.length) {
        curChar = content[index]
      }
      index++

      // If we either have a comma separator or are at the end of the content...
      if (curChar == ',' && !firstCharNumOfPart && !inRange || index == content.length + 1) {
        val part = option.toString()
        vals.add(part)
        option = StringBuilder()
        inRange = false
        firstCharNumOfPart = true
        continue
      }
      option.append(curChar)
      if (curChar == '^' && option.length == 1) {
        firstCharNumOfPart = true
        continue
      }
      if (curChar == '-' && !firstCharNumOfPart) {
        inRange = true
        continue
      }
      firstCharNumOfPart = false
      inRange = false
    }
    return vals
  }