export class AbstractExpression { //constructor() { // //} protected static isStringInStringList(stringList: Array, inputString: string): boolean { for (let idx: number = 0, len: number = stringList.length; idx < len; ++idx) { const s: string = stringList[idx]; if (inputString.toLowerCase() === s.toLowerCase().trim()) { return true; } } return false; } } export enum PlacementEnum { Above = 0, Below = 1, NotYetDefined = 2 }