wclcom.mh

来自「开放源码的编译器open watcom 1.6.0版的源代码」· MH 代码 · 共 77 行

//
//  wclcom.h    Definitions for some common list classes used by
//              the WATCOM Container List Classes
//
:keep CPP_HDR
:include crwat.sp
//
#ifndef _WCLCOM_H_INCLUDED
#define _WCLCOM_H_INCLUDED
:include readonly.sp

#ifndef __cplusplus
#error wclcom.h is for use with C++
#endif


//
//  The techniques for specifying the list classes are from
//  'The C++ Programming Language', 2nd Edition, Bjarne Stroustrup.
//




//
//  The WCSLink class is used as a basis for manipulating a number of
//  different containers.  In an intrusive container, this class provides
//  the base for the user defined class of single linked lists.
//
//  This class is intended to be a base class.  Objects of this type should
//  not be created.
//
//  constructor: set the 'next' link field to 0 (will be reset when inserted
//               into the list).
//  destructor: nothing needs to be explicitly destroyed in WCSLink.
//              It is not virtual, to save the size cost of storing a virtual
//              table pointer in every node.
//

class WCSLink {
public:
    WCSLink *       link;

    inline WCSLink() : link( 0 ) {};
    inline ~WCSLink() {};
};




//
//  The WCDLink class is used as a basis for manipulating a number of
//  different containers.  In an intrusive container, this class provides
//  the base for the user defined class of double linked lists.  The
//  WCSLink class is used as a base for this class.
//
//  This class is intended to be a base class.  Objects of this type should
//  not be created.
//
//  constructor: the 'prev' link field is set up by the WCSLink constructor.
//  destructor: nothing needs to be explicitly destroyed in WCDLink.
//              It is not virtual, to save the size cost of storing a virtual
//              table pointer in every node.
//

class WCDLink : public WCSLink {
public:
    WCSLink         prev;


    inline WCDLink() {};
    inline ~WCDLink() {};
};


#endif