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9dd5943c06
types (supersedes scm_newsmob). (scm_set_smob_mark, scm_set_smob_free, scm_set_smob_print, scm_set_smob_equalp): New functions. Sets smob functions. (SCM_NEWSMOB): New macro. Creates smob objects. (scm_make_smob): New function. Creates smob objects and mallocates memory. (scm_smob_free, scm_smob_print): Default free and print functions. * markers.c, markers.h: Removed. (Contents moved to smob.c, smob.h.)
110 lines
3.9 KiB
C
110 lines
3.9 KiB
C
/* classes: h_files */
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#ifndef SMOBH
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#define SMOBH
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/* Copyright (C) 1995,1996,1998 Free Software Foundation, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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* Boston, MA 02111-1307 USA
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*
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* As a special exception, the Free Software Foundation gives permission
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* for additional uses of the text contained in its release of GUILE.
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*
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* The exception is that, if you link the GUILE library with other files
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* to produce an executable, this does not by itself cause the
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* resulting executable to be covered by the GNU General Public License.
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* Your use of that executable is in no way restricted on account of
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* linking the GUILE library code into it.
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*
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* This exception does not however invalidate any other reasons why
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* the executable file might be covered by the GNU General Public License.
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*
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* This exception applies only to the code released by the
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* Free Software Foundation under the name GUILE. If you copy
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* code from other Free Software Foundation releases into a copy of
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* GUILE, as the General Public License permits, the exception does
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* not apply to the code that you add in this way. To avoid misleading
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* anyone as to the status of such modified files, you must delete
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* this exception notice from them.
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*
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* If you write modifications of your own for GUILE, it is your choice
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* whether to permit this exception to apply to your modifications.
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* If you do not wish that, delete this exception notice. */
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#include "libguile/__scm.h"
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#include "libguile/print.h"
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/* This is the internal representation of a smob type */
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typedef struct scm_smob_descriptor
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{
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char *name;
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scm_sizet size;
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SCM (*mark) SCM_P ((SCM));
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scm_sizet (*free) SCM_P ((SCM));
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int (*print) SCM_P ((SCM exp, SCM port, scm_print_state *pstate));
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SCM (*equalp) SCM_P ((SCM, SCM));
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} scm_smob_descriptor;
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/* scm_smobfuns is the argument type for the obsolete function scm_newsmob */
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typedef struct scm_smobfuns
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{
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SCM (*mark) SCM_P ((SCM));
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scm_sizet (*free) SCM_P ((SCM));
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int (*print) SCM_P ((SCM exp, SCM port, scm_print_state *pstate));
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SCM (*equalp) SCM_P ((SCM, SCM));
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} scm_smobfuns;
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#define SCM_NEWSMOB(z, tc, data) \
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{ \
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SCM_NEWCELL (z); \
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SCM_SETCDR (z, data); \
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SCM_SETCAR (z, tc); \
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} \
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#define SCM_SMOB_DATA(x) SCM_CDR (x)
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#define SCM_SET_SMOB_DATA(x, data) SCM_SETCDR (x, data)
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#define SCM_TC2SMOBNUM(x) (0x0ff & ((x) >> 8))
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#define SCM_SMOBNUM(x) (SCM_TC2SMOBNUM (SCM_CAR (x)))
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#define SCM_SMOBNAME(smobnum) scm_smobs[smobnum].name
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extern int scm_numsmob;
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extern scm_smob_descriptor *scm_smobs;
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extern SCM scm_mark0 SCM_P ((SCM ptr));
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extern SCM scm_markcdr SCM_P ((SCM ptr));
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extern scm_sizet scm_free0 SCM_P ((SCM ptr));
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extern scm_sizet scm_smob_free (SCM obj);
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extern int scm_smob_print (SCM exp, SCM port, scm_print_state *pstate);
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extern long scm_make_smob_type (char *name, scm_sizet size);
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extern void scm_set_smob_mark (long tc, SCM (*mark) (SCM));
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extern void scm_set_smob_free (long tc, scm_sizet (*free) (SCM));
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extern void scm_set_smob_print (long tc, int (*print) (SCM,
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SCM,
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scm_print_state*));
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extern void scm_set_smob_equalp (long tc, SCM (*equalp) (SCM, SCM));
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extern SCM scm_make_smob (long tc);
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extern void scm_smob_prehistory (void);
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/* Deprecated function */
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extern long scm_newsmob (const scm_smobfuns *smob);
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#endif /* SMOBH */
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