genish.js/js/selector.js

gen~ in js

'use strict'

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

let proto = {
  basename:'selector',

  gen() {
    let inputs = gen.getInputs( this ), out, returnValue = 0
    
    switch( inputs.length ) {
      case 2 :
        returnValue = inputs[1]
        break;
      case 3 :
        out = `  var ${this.name}_out = ${inputs[0]} === 1 ? ${inputs[1]} : ${inputs[2]}\n\n`;
        returnValue = [ this.name + '_out', out ]
        break;  
      default:
        out = 
` var ${this.name}_out = 0
  switch( ${inputs[0]} + 1 ) {\n`

        for( let i = 1; i < inputs.length; i++ ){
          out +=`    case ${i}: ${this.name}_out = ${inputs[i]}; break;\n` 
        }

        out += '  }\n\n'
        
        returnValue = [ this.name + '_out', ' ' + out ]
    }

    gen.memo[ this.name ] = this.name + '_out'

    return returnValue
  },
}

module.exports = ( ...inputs ) => {
  let ugen = Object.create( proto )
  
  Object.assign( ugen, {
    uid:     gen.getUID(),
    inputs
  })
  
  ugen.name = `${ugen.basename}${ugen.uid}`

  return ugen
}