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0f2d19dd JB |
1 | /* classes: h_files */ |
2 | ||
3 | #ifndef PRINTH | |
4 | #define PRINTH | |
5 | /* Copyright (C) 1995,1996 Free Software Foundation, Inc. | |
6 | * | |
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) | |
10 | * any later version. | |
11 | * | |
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. | |
16 | * | |
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 | |
82892bed JB |
19 | * the Free Software Foundation, Inc., 59 Temple Place, Suite 330, |
20 | * Boston, MA 02111-1307 USA | |
0f2d19dd JB |
21 | * |
22 | * As a special exception, the Free Software Foundation gives permission | |
23 | * for additional uses of the text contained in its release of GUILE. | |
24 | * | |
25 | * The exception is that, if you link the GUILE library with other files | |
26 | * to produce an executable, this does not by itself cause the | |
27 | * resulting executable to be covered by the GNU General Public License. | |
28 | * Your use of that executable is in no way restricted on account of | |
29 | * linking the GUILE library code into it. | |
30 | * | |
31 | * This exception does not however invalidate any other reasons why | |
32 | * the executable file might be covered by the GNU General Public License. | |
33 | * | |
34 | * This exception applies only to the code released by the | |
35 | * Free Software Foundation under the name GUILE. If you copy | |
36 | * code from other Free Software Foundation releases into a copy of | |
37 | * GUILE, as the General Public License permits, the exception does | |
38 | * not apply to the code that you add in this way. To avoid misleading | |
39 | * anyone as to the status of such modified files, you must delete | |
40 | * this exception notice from them. | |
41 | * | |
42 | * If you write modifications of your own for GUILE, it is your choice | |
43 | * whether to permit this exception to apply to your modifications. | |
82892bed | 44 | * If you do not wish that, delete this exception notice. */ |
0f2d19dd JB |
45 | \f |
46 | ||
b4309c3c | 47 | #include "libguile/__scm.h" |
0f2d19dd | 48 | |
e56ea0ba | 49 | #include "libguile/options.h" |
0f2d19dd | 50 | \f |
444b1d4d MD |
51 | extern scm_option scm_print_opts[]; |
52 | ||
84f6a34a MD |
53 | #define SCM_PRINT_CLOSURE ((SCM) scm_print_opts[0].val) |
54 | #define SCM_PRINT_SOURCE_P ((int) scm_print_opts[1].val) | |
b7ff98dd | 55 | #define SCM_N_PRINT_OPTIONS 2 |
444b1d4d | 56 | |
8ab4a274 MD |
57 | /* State information passed around during printing. |
58 | */ | |
4bfdf158 MD |
59 | #define SCM_PRINT_STATE_P(obj) (SCM_STRUCTP(obj) \ |
60 | && (SCM_STRUCT_VTABLE(obj) \ | |
61 | == scm_print_state_vtable)) | |
6cb66921 MD |
62 | #define SCM_PRINT_STATE(obj) ((scm_print_state *) SCM_STRUCT_DATA (obj)) |
63 | ||
8ab4a274 MD |
64 | #define RESET_PRINT_STATE(pstate) \ |
65 | { \ | |
66 | pstate->list_offset = 0; \ | |
67 | pstate->top = 0; \ | |
68 | } | |
69 | ||
70 | #define SCM_WRITINGP(pstate) ((pstate)->writingp) | |
71 | #define SCM_SET_WRITINGP(pstate, x) { (pstate)->writingp = (x); } | |
72 | ||
bfc471e7 MD |
73 | #define SCM_COERCE_OUTPORT(p) ((SCM_NIMP (p) \ |
74 | && SCM_CONSP (p) \ | |
75 | && SCM_PRINT_STATE_P (SCM_CDR (p))) \ | |
0ef4ae82 MV |
76 | ? SCM_CAR (p) \ |
77 | : p) | |
bb35f315 MV |
78 | |
79 | #define SCM_PRINT_STATE_LAYOUT "sruwuwuwuwuwpwuwuwuruopr" | |
8ab4a274 MD |
80 | typedef struct scm_print_state { |
81 | SCM handle; /* Struct handle */ | |
bb35f315 | 82 | int revealed; /* Has the state escaped to Scheme? */ |
8ab4a274 MD |
83 | unsigned long writingp; /* Writing? */ |
84 | unsigned long fancyp; /* Fancy printing? */ | |
85 | unsigned long level; /* Max level */ | |
86 | unsigned long length; /* Max number of objects per level */ | |
87 | SCM hot_ref; /* Hot reference */ | |
88 | unsigned long list_offset; | |
89 | unsigned long top; /* Top of reference stack */ | |
90 | unsigned long ceiling; /* Max size of reference stack */ | |
bf685b6d | 91 | SCM *ref_stack; /* Stack of references used during |
8ab4a274 | 92 | circular reference detection */ |
bf685b6d | 93 | SCM ref_vect; |
8ab4a274 MD |
94 | } scm_print_state; |
95 | ||
bb35f315 MV |
96 | extern SCM scm_print_state_vtable; |
97 | ||
1cc91f1b | 98 | extern SCM scm_print_options SCM_P ((SCM setting)); |
6cb66921 MD |
99 | SCM scm_make_print_state SCM_P ((void)); |
100 | void scm_free_print_state SCM_P ((SCM print_state)); | |
1cc91f1b JB |
101 | extern void scm_intprint SCM_P ((long n, int radix, SCM port)); |
102 | extern void scm_ipruk SCM_P ((char *hdr, SCM ptr, SCM port)); | |
805df3e8 | 103 | extern void scm_iprlist SCM_P ((char *hdr, SCM exp, int tlr, SCM port, scm_print_state *pstate)); |
1cc91f1b JB |
104 | extern void scm_prin1 SCM_P ((SCM exp, SCM port, int writingp)); |
105 | extern void scm_iprin1 SCM_P ((SCM exp, SCM port, scm_print_state *pstate)); | |
106 | extern SCM scm_write SCM_P ((SCM obj, SCM port)); | |
107 | extern SCM scm_display SCM_P ((SCM obj, SCM port)); | |
108 | extern SCM scm_newline SCM_P ((SCM port)); | |
109 | extern SCM scm_write_char SCM_P ((SCM chr, SCM port)); | |
bb35f315 MV |
110 | extern SCM scm_printer_apply SCM_P ((SCM proc, SCM exp, SCM port, |
111 | scm_print_state *)); | |
112 | extern int scm_valid_oport_value_p SCM_P ((SCM val)); | |
1cc91f1b | 113 | extern void scm_init_print SCM_P ((void)); |
0f2d19dd JB |
114 | |
115 | #endif /* PRINTH */ |