expr-builder.ts

class ExprBuilder {
  constructor(protected ast: Expr) { }

  GetExpr = () => this.ast

  equals(v: string | number | boolean | ExprBuilder) {
    if (['string', 'number', 'boolean'].indexOf(typeof v) != -1) {
      return new ExprBuilder(createBinaryExpression('==', this.ast, createValExpression(v)))
    }
    return new ExprBuilder(createBinaryExpression('==', this.ast, (v as ExprBuilder).GetExpr()))
  }

  and(e: ExprBuilder) {
    return new ExprBuilder((createBinaryExpression('&&', this.ast, e.GetExpr())))
  }

  includes(e: ExprBuilder| string) {
    if (typeof e == 'string') 
      return new ExprBuilder(createBinaryExpression('includes', this.ast, createValExpression(e)))
    return new ExprBuilder(createBinaryExpression('includes', this.ast, e.GetExpr()))
  }
}