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215 lines
7 KiB
C
215 lines
7 KiB
C
/* Copyright (C) 1996 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 <stdio.h>
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#include "_scm.h"
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#include "chars.h"
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#include "struct.h"
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#include "tag.h"
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SCM_CONST_LONG (scm_utag_immediate_integer, "utag_immediate_integer", 0);
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SCM_CONST_LONG (scm_utag_immediate_char, "utag_immediate_char", 1);
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SCM_CONST_LONG (scm_utag_pair, "utag_pair", 2);
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SCM_CONST_LONG (scm_utag_closure, "utag_closure", 3);
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SCM_CONST_LONG (scm_utag_symbol, "utag_symbol", 4);
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SCM_CONST_LONG (scm_utag_vector, "utag_vector", 5);
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SCM_CONST_LONG (scm_utag_wvect, "utag_wvect", 6);
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SCM_CONST_LONG (scm_utag_bvect, "utag_bvect", 7);
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SCM_CONST_LONG (scm_utag_byvect, "utag_byvect", 8);
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SCM_CONST_LONG (scm_utag_svect, "utag_svect", 9);
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SCM_CONST_LONG (scm_utag_ivect, "utag_ivect", 10);
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SCM_CONST_LONG (scm_utag_uvect, "utag_uvect", 11);
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SCM_CONST_LONG (scm_utag_fvect, "utag_fvect", 12);
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SCM_CONST_LONG (scm_utag_dvect, "utag_dvect", 13);
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SCM_CONST_LONG (scm_utag_cvect, "utag_cvect", 14);
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SCM_CONST_LONG (scm_utag_string, "utag_string", 15);
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SCM_CONST_LONG (scm_utag_mb_string, "utag_mb_string", 16);
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SCM_CONST_LONG (scm_utag_substring, "utag_substring", 17);
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SCM_CONST_LONG (scm_utag_mb_substring, "utag_mb_substring", 18);
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SCM_CONST_LONG (scm_utag_asubr, "utag_asubr", 19);
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SCM_CONST_LONG (scm_utag_subr_0, "utag_subr_0", 20);
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SCM_CONST_LONG (scm_utag_subr_1, "utag_subr_1", 21);
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SCM_CONST_LONG (scm_utag_cxr, "utag_cxr", 22);
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SCM_CONST_LONG (scm_utag_subr_3, "utag_subr_3", 23);
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SCM_CONST_LONG (scm_utag_subr_2, "utag_subr_2", 24);
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SCM_CONST_LONG (scm_utag_rpsubr, "utag_rpsubr", 25);
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SCM_CONST_LONG (scm_utag_subr_1o, "utag_subr_1o", 26);
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SCM_CONST_LONG (scm_utag_subr_2o, "utag_subr_2o", 27);
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SCM_CONST_LONG (scm_utag_lsubr_2, "utag_lsubr_2", 28);
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SCM_CONST_LONG (scm_utag_lsubr, "utag_lsubr", 29);
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SCM_CONST_LONG (scm_utag_smob_base, "utag_smob_base", 252);
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SCM_CONST_LONG (scm_utag_port_base, "utag_port_base", 253);
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SCM_CONST_LONG (scm_utag_flag_base, "utag_flag_base", 254);
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SCM_CONST_LONG (scm_utag_struct_base, "utag_struct_base", 255);
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SCM_PROC (s_tag, "tag", 1, 0, 0, scm_tag);
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SCM
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scm_tag (x)
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SCM x;
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{
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switch (SCM_ITAG3 (x))
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{
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case scm_tc3_int_1:
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case scm_tc3_int_2:
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return SCM_CDR (scm_utag_immediate_integer) ;
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case scm_tc3_imm24:
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if (SCM_ICHRP (x))
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return SCM_CDR (scm_utag_immediate_char) ;
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else
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{
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int tag;
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tag = SCM_MAKINUM ((x >> 8) & 0xff);
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return SCM_MAKINUM (SCM_INUM (SCM_CDR (scm_utag_flag_base) ) | (tag << 8));
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}
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case scm_tc3_cons:
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switch (SCM_TYP7 (x))
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{
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case scm_tcs_cons_nimcar:
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return SCM_CDR (scm_utag_pair) ;
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case scm_tcs_closures:
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return SCM_CDR (scm_utag_closure) ;
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case scm_tcs_symbols:
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return SCM_CDR (scm_utag_symbol) ;
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case scm_tc7_vector:
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return SCM_CDR (scm_utag_vector) ;
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case scm_tc7_wvect:
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return SCM_CDR (scm_utag_wvect) ;
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case scm_tc7_bvect:
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return SCM_CDR (scm_utag_bvect) ;
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case scm_tc7_byvect:
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return SCM_CDR (scm_utag_byvect) ;
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case scm_tc7_svect:
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return SCM_CDR (scm_utag_svect) ;
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case scm_tc7_ivect:
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return SCM_CDR (scm_utag_ivect) ;
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case scm_tc7_uvect:
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return SCM_CDR (scm_utag_uvect) ;
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case scm_tc7_fvect:
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return SCM_CDR (scm_utag_fvect) ;
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case scm_tc7_dvect:
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return SCM_CDR (scm_utag_dvect) ;
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case scm_tc7_cvect:
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return SCM_CDR (scm_utag_cvect) ;
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case scm_tc7_string:
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return SCM_CDR (scm_utag_string) ;
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case scm_tc7_mb_string:
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return SCM_CDR (scm_utag_mb_string) ;
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case scm_tc7_substring:
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return SCM_CDR (scm_utag_substring) ;
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case scm_tc7_mb_substring:
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return SCM_CDR (scm_utag_mb_substring) ;
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case scm_tc7_asubr:
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return SCM_CDR (scm_utag_asubr) ;
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case scm_tc7_subr_0:
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return SCM_CDR (scm_utag_subr_0) ;
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case scm_tc7_subr_1:
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return SCM_CDR (scm_utag_subr_1) ;
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case scm_tc7_cxr:
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return SCM_CDR (scm_utag_cxr) ;
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case scm_tc7_subr_3:
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return SCM_CDR (scm_utag_subr_3) ;
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case scm_tc7_subr_2:
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return SCM_CDR (scm_utag_subr_2) ;
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case scm_tc7_rpsubr:
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return SCM_CDR (scm_utag_rpsubr) ;
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case scm_tc7_subr_1o:
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return SCM_CDR (scm_utag_subr_1o) ;
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case scm_tc7_subr_2o:
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return SCM_CDR (scm_utag_subr_2o) ;
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case scm_tc7_lsubr_2:
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return SCM_CDR (scm_utag_lsubr_2) ;
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case scm_tc7_lsubr:
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return SCM_CDR (scm_utag_lsubr) ;
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case scm_tc7_port:
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{
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int tag;
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tag = (SCM_TYP16 (x) >> 8) & 0xff;
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return SCM_MAKINUM (SCM_INUM (SCM_CDR (scm_utag_port_base)) | (tag << 8));
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}
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case scm_tc7_smob:
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{
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int tag;
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tag = (SCM_TYP16 (x) >> 8) & 0xff;
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return SCM_MAKINUM (SCM_INUM (SCM_CDR (scm_utag_smob_base)) | (tag << 8));
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}
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case scm_tcs_cons_gloc:
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/* must be a struct */
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{
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int tag;
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tag = SCM_STRUCT_VTABLE_DATA (x)[scm_struct_i_tag];
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return SCM_MAKINUM (SCM_INUM (SCM_CDR (scm_utag_struct_base)) | (tag << 8));
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}
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return SCM_CDR (scm_utag_struct_base) ;
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default:
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if (SCM_CONSP (x))
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return SCM_CDR (scm_utag_pair);
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else
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return SCM_MAKINUM (-1);
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}
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case scm_tc3_cons_gloc:
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case scm_tc3_tc7_1:
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case scm_tc3_tc7_2:
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case scm_tc3_closure:
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/* Never reached */
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break;
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}
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return SCM_MAKINUM (-1);
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}
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void
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scm_init_tag ()
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{
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#include "tag.x"
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}
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