lib/ccparser.js
function checkInBlock(mask) {
      var block = cc.block[last]
      if (block && block === (block & mask))
        return true
      emitError('Unexpected #' + key + ' in @')
      return false
    }
function checkInBlock(mask) {
      var block = cc.block[last]
      if (block && block === (block & mask))
        return true
      emitError('Unexpected #' + key + ' in @')
      return false
    }
function checkInBlock ( mask ) { var block = cc . block [ last ] if ( block && block === ( block & mask ) ) return true emitError ( 'Unexpected #' + key + ' in @' ) return false }
Inner helper - throws if the current block is not of the expected type
Inner helper - throws if the current block is not of the expected type