5 /* Copyright (C) 1995,1996 Free Software Foundation, Inc.
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2, or (at your option)
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this software; see the file COPYING. If not, write to
19 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
21 * As a special exception, the Free Software Foundation gives permission
22 * for additional uses of the text contained in its release of GUILE.
24 * The exception is that, if you link the GUILE library with other files
25 * to produce an executable, this does not by itself cause the
26 * resulting executable to be covered by the GNU General Public License.
27 * Your use of that executable is in no way restricted on account of
28 * linking the GUILE library code into it.
30 * This exception does not however invalidate any other reasons why
31 * the executable file might be covered by the GNU General Public License.
33 * This exception applies only to the code released by the
34 * Free Software Foundation under the name GUILE. If you copy
35 * code from other Free Software Foundation releases into a copy of
36 * GUILE, as the General Public License permits, the exception does
37 * not apply to the code that you add in this way. To avoid misleading
38 * anyone as to the status of such modified files, you must delete
39 * this exception notice from them.
41 * If you write modifications of your own for GUILE, it is your choice
42 * whether to permit this exception to apply to your modifications.
43 * If you do not wish that, delete this exception notice.
47 #include "libguile/__scm.h"
49 #include "libguile/options.h"
51 extern scm_option scm_print_opts
[];
53 #define SCM_PRINT_CLOSURE ((SCM) scm_print_opts[0].val)
54 #define SCM_PRINT_SOURCE_P ((int) scm_print_opts[1].val)
55 #define SCM_N_PRINT_OPTIONS 2
57 /* State information passed around during printing.
59 #define SCM_PRINT_STATE(obj) ((scm_print_state *) SCM_STRUCT_DATA (obj))
61 #define RESET_PRINT_STATE(pstate) \
63 pstate->list_offset = 0; \
67 #define SCM_WRITINGP(pstate) ((pstate)->writingp)
68 #define SCM_SET_WRITINGP(pstate, x) { (pstate)->writingp = (x); }
70 #define SCM_PRINT_STATE_LAYOUT "sruwuwuwuwpwuwuwuruopr"
71 typedef struct scm_print_state
{
72 SCM handle
; /* Struct handle */
73 unsigned long writingp
; /* Writing? */
74 unsigned long fancyp
; /* Fancy printing? */
75 unsigned long level
; /* Max level */
76 unsigned long length
; /* Max number of objects per level */
77 SCM hot_ref
; /* Hot reference */
78 unsigned long list_offset
;
79 unsigned long top
; /* Top of reference stack */
80 unsigned long ceiling
; /* Max size of reference stack */
81 SCM
*ref_stack
; /* Stack of references used during
82 circular reference detection */
86 extern SCM scm_print_options
SCM_P ((SCM setting
));
87 SCM scm_make_print_state
SCM_P ((void));
88 void scm_free_print_state
SCM_P ((SCM print_state
));
89 extern void scm_intprint
SCM_P ((long n
, int radix
, SCM port
));
90 extern void scm_ipruk
SCM_P ((char *hdr
, SCM ptr
, SCM port
));
91 extern void scm_iprlist
SCM_P ((char *hdr
, SCM exp
, int tlr
, SCM port
, scm_print_state
*pstate
));
92 extern void scm_prin1
SCM_P ((SCM exp
, SCM port
, int writingp
));
93 extern void scm_iprin1
SCM_P ((SCM exp
, SCM port
, scm_print_state
*pstate
));
94 extern SCM scm_write
SCM_P ((SCM obj
, SCM port
));
95 extern SCM scm_display
SCM_P ((SCM obj
, SCM port
));
96 extern SCM scm_newline
SCM_P ((SCM port
));
97 extern SCM scm_write_char
SCM_P ((SCM chr
, SCM port
));
98 extern void scm_init_print
SCM_P ((void));