#ifndef SYMTAB_IDTABLE_H
#define SYMTAB_IDTABLE_H

#include <iostream>
#include <map>
#include <string>
#include <stack>

#include "SynTree/SynTree.h"

namespace SymTab {
    class IdTable {
      public:
	IdTable();
  
	void enterScope();
	void leaveScope();
	void addDecl( DeclarationWithType *decl );
	void lookupId( const std::string &id, std::list< DeclarationWithType* >& decls ) const;
	DeclarationWithType* lookupId( const std::string &id) const;
  
	void dump( std::ostream &os ) const; // debugging

      private:
	typedef std::pair< DeclarationWithType*, int > DeclEntry;
	typedef std::map< std::string, std::stack< DeclEntry > > InnerTableType;
	typedef std::map< std::string, InnerTableType > OuterTableType;

	OuterTableType table;
	int scopeLevel;
    };
} // namespace SymTab

#endif // SYMTAB_IDTABLE_H