@discipl/law-reg/dist/expressions/productExpressionChecker.js

Discipl Law and Regulation Compliance Library

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.ProductExpressionChecker = void 0;

var _big_util = require("../utils/big_util");

var _baseSubExpressionChecker = require("./baseSubExpressionChecker");

class ProductExpressionChecker extends _baseSubExpressionChecker.BaseSubExpressionChecker {
  async checkSubExpression(fact, ssid, context) {
    let productResult = 1;

    for (const op of fact.operands) {
      if (!_big_util.BigUtil.isNumeric(productResult)) {
        break;
      }

      const newContext = this._getContextExplainer().extendContextWithExplanation(context);

      const operandResult = await this._getExpressionChecker().checkExpression(op, ssid, newContext);
      this.logger.debug('OperandResult in PRODUCT', String(operandResult), 'for operand', op);
      const opArray = Array.isArray(operandResult) ? operandResult : [operandResult];

      for (const arrayOp of opArray) {
        this.logger.debug('ArrayOperandResult in PRODUCT', String(arrayOp), 'for operand', op);

        if (arrayOp === undefined) {
          productResult = undefined;
          break;
        } else if (!_big_util.BigUtil.isNumeric(arrayOp)) {
          productResult = false;
          break;
        } else {
          productResult = _big_util.BigUtil.multiply(productResult, arrayOp);
        }
      }
    }

    this.logger.debug('Resolved PRODUCT as', String(productResult));

    this._getContextExplainer().extendContextExplanationWithResult(context, productResult);

    return productResult;
  }

}

exports.ProductExpressionChecker = ProductExpressionChecker;