genish.js/js/sub.js

gen~ in js

'use strict'

const gen = require('./gen.js')

const proto = {
  basename:'sub',
  gen() {
    let inputs = gen.getInputs( this ),
        out=0,
        diff = 0,
        needsParens = false, 
        numCount = 0,
        lastNumber = inputs[ 0 ],
        lastNumberIsUgen = isNaN( lastNumber ), 
        subAtEnd = false,
        hasUgens = false,
        returnValue = 0

    this.inputs.forEach( value => { if( isNaN( value ) ) hasUgens = true })

    out = '  var ' + this.name + ' = '

    inputs.forEach( (v,i) => {
      if( i === 0 ) return

      let isNumberUgen = isNaN( v ),
          isFinalIdx   = i === inputs.length - 1

      if( !lastNumberIsUgen && !isNumberUgen ) {
        lastNumber = lastNumber - v
        out += lastNumber
        return
      }else{
        needsParens = true
        out += `${lastNumber} - ${v}`
      }

      if( !isFinalIdx ) out += ' - ' 
    })

    out += '\n'

    returnValue = [ this.name, out ]

    gen.memo[ this.name ] = this.name

    return returnValue
  }

}

module.exports = ( ...args ) => {
  let sub = Object.create( proto )

  Object.assign( sub, {
    id:     gen.getUID(),
    inputs: args
  })
       
  sub.name = 'sub' + sub.id

  return sub
}