ins.h

来自「开放源码的编译器open watcom 1.6.0版的源代码」· C头文件 代码 · 共 74 行

/****************************************************************************
*
*                            Open Watcom Project
*
*    Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
*
*  ========================================================================
*
*    This file contains Original Code and/or Modifications of Original
*    Code as defined in and that are subject to the Sybase Open Watcom
*    Public License version 1.0 (the 'License'). You may not use this file
*    except in compliance with the License. BY USING THIS FILE YOU AGREE TO
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*    provided with the Original Code and Modifications, and is also
*    available at www.sybase.com/developer/opensource.
*
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* Description:  WHEN YOU FIGURE OUT WHAT THIS FILE DOES, PLEASE
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****************************************************************************/


#ifndef _ins_h
#define _ins_h

#include <iostream.h>
#include "basics.h"

const uint nChars = 256;
typedef uchar Char;

const uint CHAR = 0;
const uint GOTO = 1;
const uint FORK = 2;
const uint TERM = 3;
const uint CTXT = 4;

union Ins {
    struct {
        byte    tag;
        byte    marked;
        void    *link;
    }                   i;
    struct {
        ushort  value;
        ushort  bump;
        void    *link;
    }                   c;
};

inline bool isMarked(Ins *i){
    return (bool) i->i.marked;
}

inline void mark(Ins *i){
    i->i.marked = true;
}

inline void unmark(Ins *i){
    i->i.marked = false;
}

#endif