c_cpp/etc/calc/label.h

   1 /*
   2  * label - label handling routines
   3  *
   4  * Copyright (C) 1999-2007  David I. Bell
   5  *
   6  * Calc is open software; you can redistribute it and/or modify it under
   7  * the terms of the version 2.1 of the GNU Lesser General Public License
   8  * as published by the Free Software Foundation.
   9  *
  10  * Calc is distributed in the hope that it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  12  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General
  13  * Public License for more details.
  14  *
  15  * A copy of version 2.1 of the GNU Lesser General Public License is
  16  * distributed with calc under the filename COPYING-LGPL.  You should have
  17  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  18  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  19  *
  20  * @(#) $Revision: 30.1 $
  21  * @(#) $Id: label.h,v 30.1 2007/03/16 11:09:46 chongo Exp $
  22  * @(#) $Source: /usr/local/src/bin/calc/RCS/label.h,v $
  23  *
  24  * Under source code control:   1990/02/15 01:48:33
  25  * File existed as early as:    before 1990
  26  *
  27  * Share and enjoy!  :-)        http://www.isthe.com/chongo/tech/comp/calc/
  28  */
  29
  30
  31 #if !defined(__LABEL_H__)
  32 #define __LABEL_H__
  33
  34
  35 #if defined(CALC_SRC)   /* if we are building from the calc source tree */
  36 # include "zmath.h"
  37 #else
  38 # include <calc/zmath.h>
  39 #endif
  40
  41
  42 #define NULL_LABEL      ((LABEL *) 0)
  43
  44
  45 /*
  46  * Label structures.
  47  */
  48 typedef struct {
  49         long l_offset;            /* offset into code of label */
  50         long l_chain;             /* offset into code of undefined chain */
  51         char *l_name;             /* name of label if any */
  52 } LABEL;
  53
  54
  55 E_FUNC void initlabels(void);
  56 E_FUNC void definelabel(char *name);
  57 E_FUNC void addlabel(char *name);
  58 E_FUNC void clearlabel(LABEL *lp);
  59 E_FUNC void setlabel(LABEL *lp);
  60 E_FUNC void uselabel(LABEL *lp);
  61 E_FUNC void checklabels(void);
  62
  63
  64 #endif /* !__LABEL_H__ */