mathsteps-experimental-fork/dist/cjs/lib/kemuEquation/Special-CrossMultiplication.js

Step by step math solutions. Experimental Fork

'use strict';

Object.defineProperty(exports, Symbol.toStringTag, { value: 'Module' });

const config = require('../config.js');
require('../index.js');
const myNodeToString = require('../newServices/nodeServices/myNodeToString.js');
const parseText = require('../newServices/nodeServices/parseText.js');
const kemuSimplifyCommonServices = require('../simplifyExpression/kemuSimplifyCommonServices.js');
require('../util/regex.js');
require('../node/Type.js');

function extractFractionSides(node) {
  if (config.isOperatorNode(node) && node.op === "/" && node.args.length === 2) {
    const [num, den] = node.args;
    return { numerator: num, denominator: den };
  }
  return null;
}
const countDivisionFn = (strOrNode) => {
  const stringVersion = typeof strOrNode === "string" ? strOrNode : myNodeToString.myNodeToString(strOrNode);
  return stringVersion.split("/").length - 1;
};
function getCrossMultiplication(_leftNode, _rightNode) {
  if (countDivisionFn(_leftNode) !== 1 || countDivisionFn(_rightNode) !== 1)
    return null;
  const leftNode = typeof _leftNode === "string" ? kemuSimplifyCommonServices.kemuFlatten(parseText.parseText(_leftNode)) : _leftNode;
  const rightNode = typeof _rightNode === "string" ? kemuSimplifyCommonServices.kemuFlatten(parseText.parseText(_rightNode)) : _rightNode;
  const leftFrac = extractFractionSides(leftNode);
  const rightFrac = extractFractionSides(rightNode);
  if (!leftFrac || !rightFrac)
    return null;
  const leftNum = leftFrac.numerator;
  const leftDenom = leftFrac.denominator;
  const rightNum = rightFrac.numerator;
  const rightDenom = rightFrac.denominator;
  const crossLeft = kemuSimplifyCommonServices.kemuFlatten(parseText.parseText(`(${myNodeToString.myNodeToString(leftNum)}) * (${myNodeToString.myNodeToString(rightDenom)})`));
  const crossRight = kemuSimplifyCommonServices.kemuFlatten(parseText.parseText(`(${myNodeToString.myNodeToString(leftDenom)}) * (${myNodeToString.myNodeToString(rightNum)})`));
  return { crossLeft, crossRight };
}

exports.getCrossMultiplication = getCrossMultiplication;