package gw.rating.flow.domain

uses gw.util.Pair

abstract class Statement {
  protected static final var OPEN_BRACE: String = "{"
  protected static final var CLOSE_BRACE: String = "}"

  protected var _parentStatement : Statement as Parent = null
  protected var _highlightElement : RateRoutineHighlightElement as HighlightElement
  protected var _start : Pair<Integer, Integer> as readonly Start
  protected var _end : Pair<Integer, Integer> as readonly End

  property get CodeSize():int {
    return 1
  }

  construct() {  }

  abstract function generate(context: GenerationContext) 
  abstract function getOffendingOperand(issue: gw.lang.parser.IParseIssue) : CalcStepOperand

  //Interested sub-classes (e.g. IfStatement) override this function to return the offending sub-statement,  others return "this"
  function getOffendingSubStatement(issue: gw.lang.parser.IParseIssue) : Statement {
    return this
  }

  function setStartAndEnd(start: Pair<Integer, Integer>, end: Pair<Integer, Integer>) {
    _start = start
    _end = end
  }
}