/* This is a skeleton of a JavaCC parser specification. You are best off
   simply filling in the missing grammar rules.
*/

options {
  LOOKAHEAD = 2;
  CHOICE_AMBIGUITY_CHECK = 2;
  OTHER_AMBIGUITY_CHECK = 1;
  STATIC = true;
  DEBUG_PARSER = false;
  DEBUG_LOOKAHEAD = false;
  DEBUG_TOKEN_MANAGER = false;
  ERROR_REPORTING = true;
  JAVA_UNICODE_ESCAPE = false;
  UNICODE_INPUT = false;
  IGNORE_CASE = false;
  USER_TOKEN_MANAGER = false;
  USER_CHAR_STREAM = false;
  BUILD_PARSER = true;
  BUILD_TOKEN_MANAGER = true;
  SANITY_CHECK = true;
  FORCE_LA_CHECK = false;
}

PARSER_BEGIN(Parser)
package pointless;

public class Parser {
  public static void main(String args[]) throws ParseException {
    Parser parser = new Parser(System.in);
    Node x = parser.Input();
	x.print(0);  }

}

PARSER_END(Parser)

SKIP :
{
 	" "
  |	"\r"
  |	"\t"
  //fill in comments and mult-line comments.
  |     "\n"
  
}




Node Input() :

{Node out;}
{
  out = Program(new Node("root"))  <EOF> { return out;}
}


//here's an example of a formatted grammer rule

Node Program(Node parent) :{ Node child; }
{
 ( (child = Function() | child = Record() | child = GlobalDecl()) 
   { parent.children.add(child); } )* { return parent; }
}

RecordNode Record(): { RecordNode $rec = new RecordNode(); }
{
  "record" $rec.name = TypeId() "{" (Decl($rec.children) ";")* "}" {
      return $rec; }}

// Now, you should be able to fill in the rest.
// feel free to modify the above rules, they are only there
// as examples.



//here is one way to define id.
String Id(): { Token t; StringBuffer b = new StringBuffer(); } { 
  ( ( ( t = < IDSYM: (["a" - "z" ] 
	( [ "A" - "Z", "a" - "z", "0" - "9", "_" ] ) * ) > ) 
	{ b.append(t.image);} ) ) { return b.toString(); } }