formulax/a.js

Fast javascript expression parser and compiler.

const formulax = require('./src')


var source = `$(123).plus(456).minus(10)*2`
const { formula } = formulax.parse(source)
const exec = require('./src/exec2')

function ChainableValue(value, context) {
  if(typeof value === 'string') {
    if(value.split('-').length === 4) { // uuid
      this.value = value
    }
  }
  this.value = value
}

ChainableValue.prototype = {

  inRow( id ) {
    return this
  },

  plus(x) {
    this.value += x
    return this
  },
  minus(x) {
    this.value -= x
    return this
  },
  valueOf() {
    return this.value
  },
}

const $ = x => new ChainableValue(x)


console.log(exec(formula, {
  $,
}))