#ifndef GRAMMAR_H
#define GRAMMAR_H
/////////////////////////////////////////////////////////////////////
//  grammar.h  -  provides detectors for grammatical constructs    //
//  ver 1.0                                                        //
//                                                                 //
//  Language:     Visual C++, ver 7.0                              //
//  Platfrom:     Dell Dimension 8100, Windows 2000, SP 2.0        //
//  Application:  Prototype for CSE687 Pr#2, Spring 2003           //
//  Author:       Jim Fawcett, CST 2-187, Syracuse University      //
//                (315) 443-3948, jfawcett@twcny.rr.com            //
/////////////////////////////////////////////////////////////////////
/*
    Module Operation:
    =================
    The grammar module provides a set of detector functions that
    identify gramatical constructs captured by the tokens in a
    semiExp object.

    Public Interface:
    =================
    semiExp se(in);           // create a semiExp object
    grammar g(se);            // create a grammar object
    bool b = g.functionDef(); // is a function definition?
    bool b = g.include();     // is an include statement?

*/
/////////////////////////////////////////////////////////////////////
//  Build Process                                                  //
/////////////////////////////////////////////////////////////////////
//  Required Files:                                                //
//    grammar.h, grammar.cpp, semi.h, semi.cpp, tok.h, tok.cpp     //
//                                                                 //
//  Compiler command:                                              //
//    cl /DTEST_SCANNER grammar.cpp semi.cpp tok.cpp display.cpp   //
/////////////////////////////////////////////////////////////////////
/*
    Maintenance History:
    ====================
    ver 1.0 : 02/08/03
      - first release

*/
//
#include "semi.h"

class grammar
{
public:
  grammar(semiExp &se);
  bool include();
  bool functionDef();
  bool invocation();
  bool declar();
private:
  bool specialKeys(const std::string &s);
  semiExp& _se;  // don't copy
};
//----< initializes a grammar object with a semiExp >----------

inline grammar::grammar(semiExp &se) : _se(se) {}

//----< detects #include statements >--------------------------

inline bool grammar::include()
{
  return (_se[0]=="#" && _se[1]=="include");
}

#endif