def utf16Pair()

in unicode_regex/unicode_regex_groups.scala [13:15]

• 3 lines of code
• 5 McCabe index (conditional complexity)

def utf16Pair(cc: Int) = if (cc < 0x10000) Seq(cc) else Seq(0xd800 + (((cc - 0x10000) >> 10) & 0x3ff), 0xdc00 + (cc & 0x3ff))    
def isPrintableChar(cc: Int) = cc < 0xff && "\\w".r.findFirstIn("%c".format(cc)).isDefined
def escJavaChar(cc: Int) = utf16Pair(cc).map { case cu => (if (isPrintableChar(cu)) "%c" else if (cu < 0x100) "\\\\x%02x" else "\\\\u%04x").format(cu) }.mkString