genish.js/js/ifelseif.js

gen~ in js

'use strict'

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

let proto = {
  basename:'ifelse',

  gen() {
    let conditionals = this.inputs[0],
        defaultValue = gen.getInput( conditionals[ conditionals.length - 1] ),
        out = `  var ${this.name}_out = ${defaultValue}\n` 

    //console.log( 'conditionals:', this.name, conditionals )

    //console.log( 'defaultValue:', defaultValue )

    for( let i = 0; i < conditionals.length - 2; i+= 2 ) {
      let isEndBlock = i === conditionals.length - 3,
          cond  = gen.getInput( conditionals[ i ] ),
          preblock = conditionals[ i+1 ],
          block, blockName, output

      //console.log( 'pb', preblock )

      if( typeof preblock === 'number' ){
        block = preblock
        blockName = null
      }else{
        if( gen.memo[ preblock.name ] === undefined ) {
          // used to place all code dependencies in appropriate blocks
          gen.startLocalize()

          gen.getInput( preblock )

          block = gen.endLocalize()
          blockName = block[0]
          block = block[ 1 ].join('')
          block = '  ' + block.replace( /\n/gi, '\n  ' )
        }else{
          block = ''
          blockName = gen.memo[ preblock.name ]
        }
      }

      output = blockName === null ? 
        `  ${this.name}_out = ${block}` :
        `${block}  ${this.name}_out = ${blockName}`
      
      if( i===0 ) out += ' '
      out += 
` if( ${cond} === 1 ) {
${output}
  }`

      if( !isEndBlock ) {
        out += ` else`
      }else{
        out += `\n`
      }
    }

    gen.memo[ this.name ] = `${this.name}_out`

    return [ `${this.name}_out`, out ]
  }
}

module.exports = ( ...args  ) => {
  let ugen = Object.create( proto ),
      conditions = Array.isArray( args[0] ) ? args[0] : args

  Object.assign( ugen, {
    uid:     gen.getUID(),
    inputs:  [ conditions ],
  })
  
  ugen.name = `${ugen.basename}${ugen.uid}`

  return ugen
}