set.peg

{
  var self = this;
  function transformIdentifier(identifier, attribute) {
    var param = self.name2param[identifier];
    if(param) {
      if(attribute) {
        if(param.data.attributes.buffer && attribute == 'length') {
          return 'node::Buffer::Length(args[' + param.nodeArgNum +'])';
        }
      }
      return self.name2param[identifier].variable;
    }

    if(attribute)
      return identifier + '.' + attribute;
    return identifier;
  }
}
start
  = expression

expression = elements:(element:element _ {return element;})*  {return elements.join(''); }

element = identifier_attribute / identifier:identifier {
  return transformIdentifier(identifier);
} / [+-\\(\\)*/]

identifier_attribute = identifier:identifier _ '.' _ attribute:identifier {
  return transformIdentifier(identifier, attribute);
}

identifier = char:[a-zA-Z_] chars:[a-zA-Z0-9_]* {
  return char + chars.join('');
}

_ = [ \t\n]*