generate.js

import { add, minus, times, pow } from './functions';
import { number } from './stack';

const randomFunction = (functions, stacks) => {
  if (Math.random() > 0.5) {
    const keys = Object.keys(stacks);
    const random = keys[Math.floor(Math.random() * keys.length)];
    return [random, stacks[random].random()];
  }

  const names = Object.keys(functions);
  const random = names[Math.floor(Math.random() * names.length)];
  return [random, ...functions[random].randomParams()];
};

const randomInstructions = (functions, stacks) => {
  return randomFunction(functions, stacks);
};

export const generate = (functions, stacks) => length => {
  const ret = [];

  let i = 0;
  while (i++ < length) {
    ret.push(randomInstructions(functions, stacks));
  }
  return ret;
};

const num = number(['x']);

/*
console.log(generate(
  { add: add(num),
    minus: minus(num),
    times: times(num),
    pow: pow(num) },
  { number: num },
  10
))
*/

export const example = (depth = 10) =>
  generate(
    {
      add: add(num),
      // minus: minus(num),
      times: times(num)
      // pow: pow(num)
    },
    { number: num }
  )(depth);