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0f2d19dd JB |
1 | /* classes: h_files */ |
2 | ||
09cb9e73 DH |
3 | #ifndef SCM_PRINT_H |
4 | #define SCM_PRINT_H | |
0527e687 | 5 | |
09cb9e73 | 6 | /* Copyright (C) 1995,1996,1998,2000,2001 Free Software Foundation, Inc. |
0527e687 | 7 | * |
0f2d19dd JB |
8 | * This program is free software; you can redistribute it and/or modify |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2, or (at your option) | |
11 | * any later version. | |
0527e687 | 12 | * |
0f2d19dd JB |
13 | * This program is distributed in the hope that it will be useful, |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
0527e687 | 17 | * |
0f2d19dd JB |
18 | * You should have received a copy of the GNU General Public License |
19 | * along with this software; see the file COPYING. If not, write to | |
82892bed JB |
20 | * the Free Software Foundation, Inc., 59 Temple Place, Suite 330, |
21 | * Boston, MA 02111-1307 USA | |
0f2d19dd JB |
22 | * |
23 | * As a special exception, the Free Software Foundation gives permission | |
24 | * for additional uses of the text contained in its release of GUILE. | |
25 | * | |
26 | * The exception is that, if you link the GUILE library with other files | |
27 | * to produce an executable, this does not by itself cause the | |
28 | * resulting executable to be covered by the GNU General Public License. | |
29 | * Your use of that executable is in no way restricted on account of | |
30 | * linking the GUILE library code into it. | |
31 | * | |
32 | * This exception does not however invalidate any other reasons why | |
33 | * the executable file might be covered by the GNU General Public License. | |
34 | * | |
35 | * This exception applies only to the code released by the | |
36 | * Free Software Foundation under the name GUILE. If you copy | |
37 | * code from other Free Software Foundation releases into a copy of | |
38 | * GUILE, as the General Public License permits, the exception does | |
39 | * not apply to the code that you add in this way. To avoid misleading | |
40 | * anyone as to the status of such modified files, you must delete | |
41 | * this exception notice from them. | |
42 | * | |
43 | * If you write modifications of your own for GUILE, it is your choice | |
44 | * whether to permit this exception to apply to your modifications. | |
82892bed | 45 | * If you do not wish that, delete this exception notice. */ |
d3a6bc94 | 46 | |
0f2d19dd JB |
47 | \f |
48 | ||
b4309c3c | 49 | #include "libguile/__scm.h" |
0f2d19dd | 50 | |
e56ea0ba | 51 | #include "libguile/options.h" |
0f2d19dd | 52 | \f |
92c2555f | 53 | extern scm_t_option scm_print_opts[]; |
444b1d4d | 54 | |
fee7ef83 | 55 | #define SCM_PRINT_CLOSURE (SCM_PACK (scm_print_opts[0].val)) |
84f6a34a | 56 | #define SCM_PRINT_SOURCE_P ((int) scm_print_opts[1].val) |
b7ff98dd | 57 | #define SCM_N_PRINT_OPTIONS 2 |
444b1d4d | 58 | |
8ab4a274 MD |
59 | /* State information passed around during printing. |
60 | */ | |
4bfdf158 | 61 | #define SCM_PRINT_STATE_P(obj) (SCM_STRUCTP(obj) \ |
54778cd3 DH |
62 | && (SCM_EQ_P (SCM_STRUCT_VTABLE(obj), \ |
63 | scm_print_state_vtable))) | |
6cb66921 MD |
64 | #define SCM_PRINT_STATE(obj) ((scm_print_state *) SCM_STRUCT_DATA (obj)) |
65 | ||
8ab4a274 | 66 | #define RESET_PRINT_STATE(pstate) \ |
d3a6bc94 | 67 | do { \ |
8ab4a274 MD |
68 | pstate->list_offset = 0; \ |
69 | pstate->top = 0; \ | |
d3a6bc94 | 70 | } while (0) |
8ab4a274 MD |
71 | |
72 | #define SCM_WRITINGP(pstate) ((pstate)->writingp) | |
73 | #define SCM_SET_WRITINGP(pstate, x) { (pstate)->writingp = (x); } | |
74 | ||
e841c3e0 | 75 | #define SCM_PORT_WITH_PS_P(p) SCM_TYP16_PREDICATE (scm_tc16_port_with_ps, p) |
09cb9e73 DH |
76 | #define SCM_PORT_WITH_PS_PORT(p) SCM_CAR (SCM_CELL_OBJECT_1 (p)) |
77 | #define SCM_PORT_WITH_PS_PS(p) SCM_CDR (SCM_CELL_OBJECT_1 (p)) | |
edf20492 | 78 | |
09cb9e73 DH |
79 | #define SCM_COERCE_OUTPORT(p) \ |
80 | (SCM_PORT_WITH_PS_P (p) ? SCM_PORT_WITH_PS_PORT (p) : p) | |
bb35f315 MV |
81 | |
82 | #define SCM_PRINT_STATE_LAYOUT "sruwuwuwuwuwpwuwuwuruopr" | |
8ab4a274 MD |
83 | typedef struct scm_print_state { |
84 | SCM handle; /* Struct handle */ | |
bb35f315 | 85 | int revealed; /* Has the state escaped to Scheme? */ |
8ab4a274 MD |
86 | unsigned long writingp; /* Writing? */ |
87 | unsigned long fancyp; /* Fancy printing? */ | |
88 | unsigned long level; /* Max level */ | |
89 | unsigned long length; /* Max number of objects per level */ | |
90 | SCM hot_ref; /* Hot reference */ | |
91 | unsigned long list_offset; | |
92 | unsigned long top; /* Top of reference stack */ | |
93 | unsigned long ceiling; /* Max size of reference stack */ | |
bf685b6d | 94 | SCM *ref_stack; /* Stack of references used during |
8ab4a274 | 95 | circular reference detection */ |
bf685b6d | 96 | SCM ref_vect; |
8ab4a274 MD |
97 | } scm_print_state; |
98 | ||
bb35f315 MV |
99 | extern SCM scm_print_state_vtable; |
100 | ||
92c2555f | 101 | extern scm_t_bits scm_tc16_port_with_ps; |
edf20492 | 102 | |
7866a09b GB |
103 | extern SCM scm_print_options (SCM setting); |
104 | SCM scm_make_print_state (void); | |
105 | void scm_free_print_state (SCM print_state); | |
106 | extern void scm_intprint (long n, int radix, SCM port); | |
107 | extern void scm_ipruk (char *hdr, SCM ptr, SCM port); | |
108 | extern void scm_iprlist (char *hdr, SCM exp, int tlr, SCM port, scm_print_state *pstate); | |
6662998f | 109 | extern void scm_print_symbol_name (const char *str, size_t len, SCM port); |
7866a09b GB |
110 | extern void scm_prin1 (SCM exp, SCM port, int writingp); |
111 | extern void scm_iprin1 (SCM exp, SCM port, scm_print_state *pstate); | |
112 | extern SCM scm_write (SCM obj, SCM port); | |
113 | extern SCM scm_display (SCM obj, SCM port); | |
114 | extern SCM scm_simple_format (SCM port, SCM message, SCM args); | |
115 | extern SCM scm_newline (SCM port); | |
116 | extern SCM scm_write_char (SCM chr, SCM port); | |
09cb9e73 | 117 | extern SCM scm_printer_apply (SCM proc, SCM exp, SCM port, scm_print_state *); |
edf20492 MD |
118 | extern SCM scm_port_with_print_state (SCM port, SCM pstate); |
119 | extern SCM scm_get_print_state (SCM port); | |
7866a09b GB |
120 | extern int scm_valid_oport_value_p (SCM val); |
121 | extern void scm_init_print (void); | |
0f2d19dd | 122 | |
f3667f52 | 123 | #ifdef GUILE_DEBUG |
7866a09b | 124 | extern SCM scm_current_pstate (void); |
f3667f52 | 125 | #endif |
0527e687 | 126 | |
09cb9e73 | 127 | #endif /* SCM_PRINT_H */ |
89e00824 ML |
128 | |
129 | /* | |
130 | Local Variables: | |
131 | c-file-style: "gnu" | |
132 | End: | |
133 | */ |