/*
 * This file is part of the Cforall project
 *
 * $Id: Parser.cc,v 1.6 2002/11/15 20:07:18 rcbilson Exp $
 *
 */

#include "Parser.h"
#include "TypedefTable.h"
#include "lex.h"
#include "cfa.tab.h"

/* global variables in cfa.y */
extern int yyparse(void);

extern int yydebug;
extern LinkageSpec::Type linkage;

extern TypedefTable typedefTable;
extern DeclarationNode *theTree;
/* end of globals */

Parser *Parser::theParser = 0;

Parser::Parser(): parseTree( 0 ), parseStatus( 1 ) {}

Parser::~Parser()
{
  delete parseTree;
}

/* static class method */
Parser &
Parser::get_parser()
{
  if( theParser == 0 ) {
    theParser = new Parser;
  }
  return *theParser;
}

void 
Parser::parse( FILE *input )
{
  extern FILE *yyin;
  yyin = input;
  extern int yylineno;
  yylineno = 1;
  typedefTable.enterScope();
  parseStatus = yyparse();
  parseTree = theTree;
}

void
Parser::set_debug( bool debug )
{
  yydebug = debug;
}

void 
Parser::set_linkage( LinkageSpec::Type linkage )
{
  ::linkage = linkage;
}


void 
Parser::freeTree()
{
  delete parseTree;
  parseTree = 0;
}