fun validateExits()

in src/org/jetbrains/r/refactoring/extractmethod/RCodeFragment.kt [70:99]

30 lines of code
10 McCabe index (conditional complexity)


      fun validateExits(): Boolean {
        if (!validateLoopExits()) return false
        var fail = false
        var haveEdgeToExit = false
        var haveEdgeToNext = false
        val lastInstruction = controlFlow.getInstructionByElement(expressions.last()) ?: return false
        ControlFlowUtil.iterate(entryPoint.num(), controlFlow.instructions, {
          if (!instructionsInside[it.num()]) {
            if (it.element == null) {
              haveEdgeToExit = true
            }
            else {
              haveEdgeToNext = true
            }
            ControlFlowUtil.Operation.CONTINUE
          }
          else {
            if (it != lastInstruction && it.allSucc().any { next -> !instructionsInside[next.num()] && next.element != null }) {
              fail = true
              ControlFlowUtil.Operation.BREAK
            }
            else {
              ControlFlowUtil.Operation.NEXT
            }
          }
        }, false)
        if (fail) return false
        if (haveEdgeToNext && haveEdgeToExit) return false
        return true
      }