/* classes: h_files */ #ifndef SCM_SMOB_H #define SCM_SMOB_H /* Copyright (C) 1995,1996,1998,1999,2000,2001 Free Software Foundation, Inc. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your option) * any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this software; see the file COPYING. If not, write to * the Free Software Foundation, Inc., 59 Temple Place, Suite 330, * Boston, MA 02111-1307 USA * * As a special exception, the Free Software Foundation gives permission * for additional uses of the text contained in its release of GUILE. * * The exception is that, if you link the GUILE library with other files * to produce an executable, this does not by itself cause the * resulting executable to be covered by the GNU General Public License. * Your use of that executable is in no way restricted on account of * linking the GUILE library code into it. * * This exception does not however invalidate any other reasons why * the executable file might be covered by the GNU General Public License. * * This exception applies only to the code released by the * Free Software Foundation under the name GUILE. If you copy * code from other Free Software Foundation releases into a copy of * GUILE, as the General Public License permits, the exception does * not apply to the code that you add in this way. To avoid misleading * anyone as to the status of such modified files, you must delete * this exception notice from them. * * If you write modifications of your own for GUILE, it is your choice * whether to permit this exception to apply to your modifications. * If you do not wish that, delete this exception notice. */ #include "libguile/__scm.h" #include "libguile/print.h" /* This is the internal representation of a smob type */ typedef struct scm_smob_descriptor { char *name; size_t size; SCM (*mark) (SCM); size_t (*free) (SCM); int (*print) (SCM exp, SCM port, scm_print_state *pstate); SCM (*equalp) (SCM, SCM); SCM (*apply) (); SCM (*apply_0) (SCM); SCM (*apply_1) (SCM, SCM); SCM (*apply_2) (SCM, SCM, SCM); SCM (*apply_3) (SCM, SCM, SCM, SCM); int gsubr_type; /* Used in procprop.c */ } scm_smob_descriptor; #define SCM_NEWSMOB(z, tc, data) \ do { \ SCM_NEWCELL (z); \ SCM_SET_CELL_WORD_1 ((z), (data)); \ SCM_SET_CELL_TYPE ((z), (tc)); \ } while (0) #define SCM_RETURN_NEWSMOB(tc, data) \ do { SCM __SCM_smob_answer; \ SCM_NEWSMOB (__SCM_smob_answer, (tc), (data)); \ return __SCM_smob_answer; \ } while (0) #define SCM_NEWSMOB2(z, tc, data1, data2) \ do { \ SCM_NEWCELL2 (z); \ SCM_SET_CELL_WORD_1 ((z), (data1)); \ SCM_SET_CELL_WORD_2 ((z), (data2)); \ SCM_SET_CELL_TYPE ((z), (tc)); \ } while (0) #define SCM_RETURN_NEWSMOB2(tc, data1, data2) \ do { SCM __SCM_smob_answer; \ SCM_NEWSMOB2 (__SCM_smob_answer, (tc), (data1), (data2)); \ return __SCM_smob_answer; \ } while (0) #define SCM_NEWSMOB3(z, tc, data1, data2, data3) \ do { \ SCM_NEWCELL2 (z); \ SCM_SET_CELL_WORD_1 ((z), (data1)); \ SCM_SET_CELL_WORD_2 ((z), (data2)); \ SCM_SET_CELL_WORD_3 ((z), (data3)); \ SCM_SET_CELL_TYPE ((z), (tc)); \ } while (0) #define SCM_RETURN_NEWSMOB3(tc, data1, data2, data3) \ do { SCM __SCM_smob_answer; \ SCM_NEWSMOB3 (__SCM_smob_answer, (tc), (data1), (data2), (data3)); \ return __SCM_smob_answer; \ } while (0) #define SCM_SMOB_DATA(x) (SCM_CELL_WORD_1 (x)) #define SCM_SET_SMOB_DATA(x, data) (SCM_SET_CELL_WORD_1 ((x), (data))) #define SCM_TC2SMOBNUM(x) (0x0ff & ((x) >> 8)) #define SCM_SMOBNUM(x) (SCM_TC2SMOBNUM (SCM_CELL_TYPE (x))) /* SCM_SMOBNAME can be 0 if name is missing */ #define SCM_SMOBNAME(smobnum) (scm_smobs[smobnum].name) #define SCM_SMOB_PREDICATE(tag, obj) SCM_TYP16_PREDICATE (tag, obj) #define SCM_SMOB_DESCRIPTOR(x) (scm_smobs[SCM_SMOBNUM (x)]) #define SCM_SMOB_APPLICABLE_P(x) (SCM_SMOB_DESCRIPTOR (x).apply) #define SCM_SMOB_APPLY_0(x) (SCM_SMOB_DESCRIPTOR (x).apply_0 (x)) #define SCM_SMOB_APPLY_1(x,a1) (SCM_SMOB_DESCRIPTOR (x).apply_1 (x, (a1))) #define SCM_SMOB_APPLY_2(x,a1,a2) (SCM_SMOB_DESCRIPTOR (x).apply_2 (x, (a1), (a2))) #define SCM_SMOB_APPLY_3(x,a1,a2,rst) (SCM_SMOB_DESCRIPTOR (x).apply_3 (x, (a1), (a2), (rst))) extern long scm_numsmob; extern scm_smob_descriptor scm_smobs[]; extern SCM scm_mark0 (SCM ptr); extern SCM scm_markcdr (SCM ptr); extern size_t scm_free0 (SCM ptr); extern size_t scm_smob_free (SCM obj); extern int scm_smob_print (SCM exp, SCM port, scm_print_state *pstate); /* The following set of functions is the standard way to create new * SMOB types. * * Create a type tag using `scm_make_smob_type', accept default values * for mark, free, print and/or equalp functions, or set your own * values using `scm_set_smob_xxx'. */ extern scm_t_bits scm_make_smob_type (char *name, size_t size); extern void scm_set_smob_mark (scm_t_bits tc, SCM (*mark) (SCM)); extern void scm_set_smob_free (scm_t_bits tc, size_t (*free) (SCM)); extern void scm_set_smob_print (scm_t_bits tc, int (*print) (SCM, SCM, scm_print_state*)); extern void scm_set_smob_equalp (scm_t_bits tc, SCM (*equalp) (SCM, SCM)); extern void scm_set_smob_apply (scm_t_bits tc, SCM (*apply) (), unsigned int req, unsigned int opt, unsigned int rst); /* Function for creating smobs */ extern SCM scm_make_smob (scm_t_bits tc); extern void scm_smob_prehistory (void); #if (SCM_DEBUG_DEPRECATED == 0) extern long scm_make_smob_type_mfpe (char *name, size_t size, SCM (*mark) (SCM), size_t (*free) (SCM), int (*print) (SCM, SCM, scm_print_state*), SCM (*equalp) (SCM, SCM)); extern void scm_set_smob_mfpe (long tc, SCM (*mark) (SCM), size_t (*free) (SCM), int (*print) (SCM, SCM, scm_print_state*), SCM (*equalp) (SCM, SCM)); #endif /* SCM_DEBUG_DEPRECATED == 0 */ #endif /* SCM_SMOB_H */ /* Local Variables: c-file-style: "gnu" End: */