www.pudn.com > calc5.zip > Parse.h

#if !defined PARSE_H 
#define PARSE_H 
//------------------------------------ 
//  parse.h 
//  (c) Bartosz Milewski, 1994 
//------------------------------------ 
 
#include "tree.h" 
 
enum Status 
{ 
    stOk, 
    stQuit, 
    stError 
}; 
 
class Node; // forward declaration 
class Scanner; 
class Store; 
class SymbolTable; 
namespace Function 
{ 
	class Table; 
} 
 
class Parser 
{ 
public: 
    Parser (Scanner & scanner, 
        Store & store, 
		Function::Table & funTab, 
        SymbolTable & symTab ); 
    Status Parse (); 
	double Calculate () const; 
private: 
	auto_ptr Expr(); 
    auto_ptr Term(); 
    auto_ptr Factor(); 
    void Execute (); 
 
    Scanner &		_scanner; 
    auto_ptr	_pTree; 
    Status			_status; 
    Store &			_store; 
	Function::Table &  _funTab; 
    SymbolTable	  & _symTab; 
}; 
#endif