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0717dfd871
* smob.c (scm_make_smob_type): Initialize `apply\' and `gsubr_type\'. (scm_set_smob_apply): New function. (scm_smob_apply_0, scm_smob_apply_1, scm_smob_apply_2, scm_smob_apply_3): New functions. * eval.c (SCM_CEVAL, SCM_APPLY): Added dispatch for applicable smobs. * procs.c (s_scm_procedure_p): Check applicable smobs.
185 lines
6.1 KiB
C
185 lines
6.1 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, 1999, 2000 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);
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scm_sizet (*free) (SCM);
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int (*print) (SCM exp, SCM port, scm_print_state *pstate);
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SCM (*equalp) (SCM, SCM);
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SCM (*apply) ();
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int gsubr_type;
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} scm_smob_descriptor;
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#define SCM_NEWSMOB(z, tc, data) \
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do { \
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SCM_NEWCELL (z); \
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SCM_SET_CELL_WORD_1 ((z), (data)); \
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SCM_SET_CELL_TYPE ((z), (tc)); \
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} while (0)
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#define SCM_RETURN_NEWSMOB(tc, data) \
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do { SCM __SCM_smob_answer; \
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SCM_NEWSMOB (__SCM_smob_answer, (tc), (data)); \
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return __SCM_smob_answer; \
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} while (0)
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#define SCM_NEWSMOB2(z, tc, data1, data2) \
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do { \
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SCM_NEWCELL2 (z); \
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SCM_SET_CELL_WORD_1 ((z), (data1)); \
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SCM_SET_CELL_WORD_2 ((z), (data2)); \
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SCM_SET_CELL_TYPE ((z), (tc)); \
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} while (0)
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#define SCM_RETURN_NEWSMOB2(tc, data1, data2) \
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do { SCM __SCM_smob_answer; \
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SCM_NEWSMOB2 (__SCM_smob_answer, (tc), (data1), (data2)); \
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return __SCM_smob_answer; \
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} while (0)
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#define SCM_NEWSMOB3(z, tc, data1, data2, data3) \
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do { \
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SCM_NEWCELL2 (z); \
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SCM_SET_CELL_WORD_1 ((z), (data1)); \
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SCM_SET_CELL_WORD_2 ((z), (data2)); \
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SCM_SET_CELL_WORD_3 ((z), (data3)); \
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SCM_SET_CELL_TYPE ((z), (tc)); \
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} while (0)
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#define SCM_RETURN_NEWSMOB3(tc, data1, data2, data3) \
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do { SCM __SCM_smob_answer; \
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SCM_NEWSMOB3 (__SCM_smob_answer, (tc), (data1), (data2), (data3)); \
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return __SCM_smob_answer; \
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} while (0)
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#define SCM_SMOB_DATA(x) (SCM_CELL_WORD_1 (x))
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#define SCM_SET_SMOB_DATA(x, data) (SCM_SET_CELL_WORD_1 ((x), (data)))
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#define SCM_TC2SMOBNUM(x) (0x0ff & ((x) >> 8))
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#define SCM_SMOBNUM(x) (SCM_TC2SMOBNUM (SCM_CELL_TYPE (x)))
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/* SCM_SMOBNAME can be 0 if name is missing */
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#define SCM_SMOBNAME(smobnum) (scm_smobs[smobnum].name)
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#define SCM_SMOB_PREDICATE(tag, obj) (SCM_NIMP (obj) \
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&& SCM_TYP16 (obj) == (tag))
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#define SCM_SMOB_DESCRIPTOR(x) (scm_smobs[SCM_SMOBNUM (x)])
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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 ptr);
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extern SCM scm_markcdr (SCM ptr);
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extern scm_sizet scm_free0 (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 SCM scm_smob_apply_0 (SCM smob);
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extern SCM scm_smob_apply_1 (SCM smob, SCM a1);
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extern SCM scm_smob_apply_2 (SCM smob, SCM a1, SCM a2);
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extern SCM scm_smob_apply_3 (SCM smob, SCM a1, SCM a2, SCM rest);
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/* The following set of functions is the standard way to create new
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* SMOB types.
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*
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* Create a type tag using `scm_make_smob_type', accept default values
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* for mark, free, print and/or equalp functions, or set your own
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* values using `scm_set_smob_xxx'.
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*/
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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 void scm_set_smob_apply (long tc, SCM (*apply) (), int req, int opt, int rst);
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/* Functions for registering multiple handler functions simultaneously.
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*
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* (There is a discussion among the developers whether or not these
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* should be deprecated in the future.)
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*/
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extern long scm_make_smob_type_mfpe (char *name, scm_sizet size,
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SCM (*mark) (SCM),
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scm_sizet (*free) (SCM),
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int (*print) (SCM, SCM, scm_print_state*),
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SCM (*equalp) (SCM, SCM));
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extern void scm_set_smob_mfpe (long tc,
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SCM (*mark) (SCM),
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scm_sizet (*free) (SCM),
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int (*print) (SCM, SCM, scm_print_state*),
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SCM (*equalp) (SCM, SCM));
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/* Function for creating smobs */
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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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#endif /* SMOBH */
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/*
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Local Variables:
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c-file-style: "gnu"
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End:
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*/
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