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/* Copyright (C) 1996, 1997 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 <stdio.h>
#include "_scm.h"
#include "chars.h"
#include "struct.h"
#include "tag.h"
SCM_CONST_LONG (scm_utag_immediate_integer, "utag_immediate_integer", 0);
SCM_CONST_LONG (scm_utag_immediate_char, "utag_immediate_char", 1);
SCM_CONST_LONG (scm_utag_pair, "utag_pair", 2);
SCM_CONST_LONG (scm_utag_closure, "utag_closure", 3);
SCM_CONST_LONG (scm_utag_symbol, "utag_symbol", 4);
SCM_CONST_LONG (scm_utag_vector, "utag_vector", 5);
SCM_CONST_LONG (scm_utag_wvect, "utag_wvect", 6);
SCM_CONST_LONG (scm_utag_bvect, "utag_bvect", 7);
SCM_CONST_LONG (scm_utag_byvect, "utag_byvect", 8);
SCM_CONST_LONG (scm_utag_svect, "utag_svect", 9);
SCM_CONST_LONG (scm_utag_ivect, "utag_ivect", 10);
SCM_CONST_LONG (scm_utag_uvect, "utag_uvect", 11);
SCM_CONST_LONG (scm_utag_fvect, "utag_fvect", 12);
SCM_CONST_LONG (scm_utag_dvect, "utag_dvect", 13);
SCM_CONST_LONG (scm_utag_cvect, "utag_cvect", 14);
SCM_CONST_LONG (scm_utag_string, "utag_string", 15);
SCM_CONST_LONG (scm_utag_substring, "utag_substring", 17);
SCM_CONST_LONG (scm_utag_asubr, "utag_asubr", 19);
SCM_CONST_LONG (scm_utag_subr_0, "utag_subr_0", 20);
SCM_CONST_LONG (scm_utag_subr_1, "utag_subr_1", 21);
SCM_CONST_LONG (scm_utag_cxr, "utag_cxr", 22);
SCM_CONST_LONG (scm_utag_subr_3, "utag_subr_3", 23);
SCM_CONST_LONG (scm_utag_subr_2, "utag_subr_2", 24);
SCM_CONST_LONG (scm_utag_rpsubr, "utag_rpsubr", 25);
SCM_CONST_LONG (scm_utag_subr_1o, "utag_subr_1o", 26);
SCM_CONST_LONG (scm_utag_subr_2o, "utag_subr_2o", 27);
SCM_CONST_LONG (scm_utag_lsubr_2, "utag_lsubr_2", 28);
SCM_CONST_LONG (scm_utag_lsubr, "utag_lsubr", 29);
SCM_CONST_LONG (scm_utag_smob_base, "utag_smob_base", 252);
SCM_CONST_LONG (scm_utag_port_base, "utag_port_base", 253);
SCM_CONST_LONG (scm_utag_flag_base, "utag_flag_base", 254);
SCM_CONST_LONG (scm_utag_struct_base, "utag_struct_base", 255);
SCM_PROC (s_tag, "tag", 1, 0, 0, scm_tag);
SCM
scm_tag (x)
SCM x;
{
switch (SCM_ITAG3 (x))
{
case scm_tc3_int_1:
case scm_tc3_int_2:
return SCM_CDR (scm_utag_immediate_integer) ;
case scm_tc3_imm24:
if (SCM_ICHRP (x))
return SCM_CDR (scm_utag_immediate_char) ;
else
{
int tag;
tag = SCM_MAKINUM ((x >> 8) & 0xff);
return SCM_MAKINUM (SCM_INUM (SCM_CDR (scm_utag_flag_base) ) | (tag << 8));
}
case scm_tc3_cons:
switch (SCM_TYP7 (x))
{
case scm_tcs_cons_nimcar:
return SCM_CDR (scm_utag_pair) ;
case scm_tcs_closures:
return SCM_CDR (scm_utag_closure) ;
case scm_tcs_symbols:
return SCM_CDR (scm_utag_symbol) ;
case scm_tc7_vector:
return SCM_CDR (scm_utag_vector) ;
case scm_tc7_wvect:
return SCM_CDR (scm_utag_wvect) ;
case scm_tc7_bvect:
return SCM_CDR (scm_utag_bvect) ;
case scm_tc7_byvect:
return SCM_CDR (scm_utag_byvect) ;
case scm_tc7_svect:
return SCM_CDR (scm_utag_svect) ;
case scm_tc7_ivect:
return SCM_CDR (scm_utag_ivect) ;
case scm_tc7_uvect:
return SCM_CDR (scm_utag_uvect) ;
case scm_tc7_fvect:
return SCM_CDR (scm_utag_fvect) ;
case scm_tc7_dvect:
return SCM_CDR (scm_utag_dvect) ;
case scm_tc7_cvect:
return SCM_CDR (scm_utag_cvect) ;
case scm_tc7_string:
return SCM_CDR (scm_utag_string) ;
case scm_tc7_substring:
return SCM_CDR (scm_utag_substring) ;
case scm_tc7_asubr:
return SCM_CDR (scm_utag_asubr) ;
case scm_tc7_subr_0:
return SCM_CDR (scm_utag_subr_0) ;
case scm_tc7_subr_1:
return SCM_CDR (scm_utag_subr_1) ;
case scm_tc7_cxr:
return SCM_CDR (scm_utag_cxr) ;
case scm_tc7_subr_3:
return SCM_CDR (scm_utag_subr_3) ;
case scm_tc7_subr_2:
return SCM_CDR (scm_utag_subr_2) ;
case scm_tc7_rpsubr:
return SCM_CDR (scm_utag_rpsubr) ;
case scm_tc7_subr_1o:
return SCM_CDR (scm_utag_subr_1o) ;
case scm_tc7_subr_2o:
return SCM_CDR (scm_utag_subr_2o) ;
case scm_tc7_lsubr_2:
return SCM_CDR (scm_utag_lsubr_2) ;
case scm_tc7_lsubr:
return SCM_CDR (scm_utag_lsubr) ;
case scm_tc7_port:
{
int tag;
tag = (SCM_TYP16 (x) >> 8) & 0xff;
return SCM_MAKINUM (SCM_INUM (SCM_CDR (scm_utag_port_base)) | (tag << 8));
}
case scm_tc7_smob:
{
int tag;
tag = (SCM_TYP16 (x) >> 8) & 0xff;
return SCM_MAKINUM (SCM_INUM (SCM_CDR (scm_utag_smob_base))
| (tag << 8));
}
case scm_tcs_cons_gloc:
/* must be a struct */
{
int tag;
tag = SCM_STRUCT_VTABLE_DATA (x)[scm_struct_i_tag];
return SCM_MAKINUM (SCM_INUM (SCM_CDR (scm_utag_struct_base))
| (tag << 8));
}
default:
if (SCM_CONSP (x))
return SCM_CDR (scm_utag_pair);
else
return SCM_MAKINUM (-1);
}
case scm_tc3_cons_gloc:
case scm_tc3_tc7_1:
case scm_tc3_tc7_2:
case scm_tc3_closure:
/* Never reached */
break;
}
return SCM_MAKINUM (-1);
}
void
scm_init_tag ()
{
#include "tag.x"
}
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