function(name, index, length) {
  this.name = name;
  this.start = index;
  this.length = length;
  this.args = [];
}
function(name, index, length) {
  this.name = name;
  this.start = index;
  this.length = length;
  this.args = [];
}
function ( name , index , length ) { this . name = name ; this . start = index ; this . length = length ; this . args = [ ] ; }
MACRO CLASS
MACRO CLASS