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0f2d19dd JB |
1 | /* classes: h_files */ |
2 | ||
3 | #ifndef PRINTH | |
4 | #define PRINTH | |
f2c9fcb0 | 5 | /* Copyright (C) 1995,1996,1998, 2000 Free Software Foundation, Inc. |
0f2d19dd JB |
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. */ |
d3a6bc94 GB |
45 | |
46 | /* Software engineering face-lift by Greg J. Badros, 11-Dec-1999, | |
47 | gjb@cs.washington.edu, http://www.cs.washington.edu/homes/gjb */ | |
0f2d19dd JB |
48 | \f |
49 | ||
b4309c3c | 50 | #include "libguile/__scm.h" |
0f2d19dd | 51 | |
e56ea0ba | 52 | #include "libguile/options.h" |
0f2d19dd | 53 | \f |
444b1d4d MD |
54 | extern scm_option scm_print_opts[]; |
55 | ||
fee7ef83 | 56 | #define SCM_PRINT_CLOSURE (SCM_PACK (scm_print_opts[0].val)) |
84f6a34a | 57 | #define SCM_PRINT_SOURCE_P ((int) scm_print_opts[1].val) |
b7ff98dd | 58 | #define SCM_N_PRINT_OPTIONS 2 |
444b1d4d | 59 | |
8ab4a274 MD |
60 | /* State information passed around during printing. |
61 | */ | |
4bfdf158 | 62 | #define SCM_PRINT_STATE_P(obj) (SCM_STRUCTP(obj) \ |
54778cd3 DH |
63 | && (SCM_EQ_P (SCM_STRUCT_VTABLE(obj), \ |
64 | scm_print_state_vtable))) | |
6cb66921 MD |
65 | #define SCM_PRINT_STATE(obj) ((scm_print_state *) SCM_STRUCT_DATA (obj)) |
66 | ||
8ab4a274 | 67 | #define RESET_PRINT_STATE(pstate) \ |
d3a6bc94 | 68 | do { \ |
8ab4a274 MD |
69 | pstate->list_offset = 0; \ |
70 | pstate->top = 0; \ | |
d3a6bc94 | 71 | } while (0) |
8ab4a274 MD |
72 | |
73 | #define SCM_WRITINGP(pstate) ((pstate)->writingp) | |
74 | #define SCM_SET_WRITINGP(pstate, x) { (pstate)->writingp = (x); } | |
75 | ||
e841c3e0 | 76 | #define SCM_PORT_WITH_PS_P(p) SCM_TYP16_PREDICATE (scm_tc16_port_with_ps, p) |
edf20492 | 77 | #define SCM_PORT_WITH_PS_PORT(p) SCM_CADR (p) |
e841c3e0 | 78 | #define SCM_PORT_WITH_PS_PS(p) SCM_CDDR (p) |
edf20492 MD |
79 | |
80 | #define SCM_COERCE_OUTPORT(p) (SCM_NIMP (p) && SCM_PORT_WITH_PS_P (p) \ | |
81 | ? SCM_PORT_WITH_PS_PORT (p) \ | |
0ef4ae82 | 82 | : p) |
bb35f315 MV |
83 | |
84 | #define SCM_PRINT_STATE_LAYOUT "sruwuwuwuwuwpwuwuwuruopr" | |
8ab4a274 MD |
85 | typedef struct scm_print_state { |
86 | SCM handle; /* Struct handle */ | |
bb35f315 | 87 | int revealed; /* Has the state escaped to Scheme? */ |
8ab4a274 MD |
88 | unsigned long writingp; /* Writing? */ |
89 | unsigned long fancyp; /* Fancy printing? */ | |
90 | unsigned long level; /* Max level */ | |
91 | unsigned long length; /* Max number of objects per level */ | |
92 | SCM hot_ref; /* Hot reference */ | |
93 | unsigned long list_offset; | |
94 | unsigned long top; /* Top of reference stack */ | |
95 | unsigned long ceiling; /* Max size of reference stack */ | |
bf685b6d | 96 | SCM *ref_stack; /* Stack of references used during |
8ab4a274 | 97 | circular reference detection */ |
bf685b6d | 98 | SCM ref_vect; |
8ab4a274 MD |
99 | } scm_print_state; |
100 | ||
bb35f315 MV |
101 | extern SCM scm_print_state_vtable; |
102 | ||
7febb4a2 | 103 | /* ? scm or long? print.h and print.c disagree */ |
e841c3e0 | 104 | extern scm_bits_t scm_tc16_port_with_ps; |
edf20492 | 105 | |
7866a09b GB |
106 | extern SCM scm_print_options (SCM setting); |
107 | SCM scm_make_print_state (void); | |
108 | void scm_free_print_state (SCM print_state); | |
109 | extern void scm_intprint (long n, int radix, SCM port); | |
110 | extern void scm_ipruk (char *hdr, SCM ptr, SCM port); | |
111 | extern void scm_iprlist (char *hdr, SCM exp, int tlr, SCM port, scm_print_state *pstate); | |
112 | extern void scm_prin1 (SCM exp, SCM port, int writingp); | |
113 | extern void scm_iprin1 (SCM exp, SCM port, scm_print_state *pstate); | |
114 | extern SCM scm_write (SCM obj, SCM port); | |
115 | extern SCM scm_display (SCM obj, SCM port); | |
116 | extern SCM scm_simple_format (SCM port, SCM message, SCM args); | |
117 | extern SCM scm_newline (SCM port); | |
118 | extern SCM scm_write_char (SCM chr, SCM port); | |
119 | extern SCM scm_printer_apply (SCM proc, SCM exp, SCM port, | |
120 | scm_print_state *); | |
edf20492 MD |
121 | extern SCM scm_port_with_print_state (SCM port, SCM pstate); |
122 | extern SCM scm_get_print_state (SCM port); | |
7866a09b GB |
123 | extern int scm_valid_oport_value_p (SCM val); |
124 | extern void scm_init_print (void); | |
0f2d19dd | 125 | |
f3667f52 | 126 | #ifdef GUILE_DEBUG |
7866a09b | 127 | extern SCM scm_current_pstate (void); |
f3667f52 | 128 | #endif |
0f2d19dd | 129 | #endif /* PRINTH */ |
89e00824 ML |
130 | |
131 | /* | |
132 | Local Variables: | |
133 | c-file-style: "gnu" | |
134 | End: | |
135 | */ |