6 /* Copyright (C) 1995,1996,1998,2000,2001, 2003, 2004, 2006, 2008 Free Software Foundation, Inc.
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public License
10 * as published by the Free Software Foundation; either version 3 of
11 * the License, or (at your option) any later version.
13 * This library is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with this library; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
26 #include "libguile/__scm.h"
28 #include "libguile/options.h"
31 /* State information passed around during printing.
33 #define SCM_PRINT_STATE_P(obj) (SCM_STRUCTP(obj) \
34 && (scm_is_eq (SCM_STRUCT_VTABLE(obj), \
35 scm_print_state_vtable)))
36 #define SCM_PRINT_STATE(obj) ((scm_print_state *) SCM_STRUCT_DATA (obj))
38 #define RESET_PRINT_STATE(pstate) \
40 pstate->list_offset = 0; \
44 #define SCM_WRITINGP(pstate) ((pstate)->writingp)
45 #define SCM_SET_WRITINGP(pstate, x) { (pstate)->writingp = (x); }
47 #define SCM_PORT_WITH_PS_P(p) SCM_TYP16_PREDICATE (scm_tc16_port_with_ps, p)
48 #define SCM_PORT_WITH_PS_PORT(p) SCM_CAR (SCM_CELL_OBJECT_1 (p))
49 #define SCM_PORT_WITH_PS_PS(p) SCM_CDR (SCM_CELL_OBJECT_1 (p))
51 #define SCM_COERCE_OUTPORT(p) \
52 (SCM_PORT_WITH_PS_P (p) ? SCM_PORT_WITH_PS_PORT (p) : p)
54 #define SCM_PRINT_STATE_LAYOUT "sruwuwuwuwuwpwuwuwurprpw"
55 typedef struct scm_print_state
{
56 SCM handle
; /* Struct handle */
57 int revealed
; /* Has the state escaped to Scheme? */
58 unsigned long writingp
; /* Writing? */
59 unsigned long fancyp
; /* Fancy printing? */
60 unsigned long level
; /* Max level */
61 unsigned long length
; /* Max number of objects per level */
62 SCM hot_ref
; /* Hot reference */
63 unsigned long list_offset
;
64 unsigned long top
; /* Top of reference stack */
65 unsigned long ceiling
; /* Max size of reference stack */
66 SCM ref_vect
; /* Stack of references used during
67 circular reference detection;
69 SCM highlight_objects
; /* List of objects to be highlighted */
72 SCM_API SCM scm_print_state_vtable
;
74 SCM_API scm_t_bits scm_tc16_port_with_ps
;
76 SCM_API SCM
scm_print_options (SCM setting
);
77 SCM_API SCM
scm_make_print_state (void);
78 SCM_API
void scm_free_print_state (SCM print_state
);
79 SCM_INTERNAL SCM
scm_i_port_with_print_state (SCM port
, SCM print_state
);
80 SCM_INTERNAL
void scm_i_charprint (scm_t_uint32 c
, SCM port
);
81 SCM_API
void scm_intprint (scm_t_intmax n
, int radix
, SCM port
);
82 SCM_API
void scm_uintprint (scm_t_uintmax n
, int radix
, SCM port
);
83 SCM_API
void scm_ipruk (char *hdr
, SCM ptr
, SCM port
);
84 SCM_API
void scm_iprlist (char *hdr
, SCM exp
, int tlr
, SCM port
, scm_print_state
*pstate
);
85 SCM_API
void scm_print_symbol_name (const char *str
, size_t len
, SCM port
);
86 SCM_API
void scm_prin1 (SCM exp
, SCM port
, int writingp
);
87 SCM_API
void scm_iprin1 (SCM exp
, SCM port
, scm_print_state
*pstate
);
88 SCM_API SCM
scm_write (SCM obj
, SCM port
);
89 SCM_API SCM
scm_display (SCM obj
, SCM port
);
90 SCM_API SCM
scm_simple_format (SCM port
, SCM message
, SCM args
);
91 SCM_API SCM
scm_newline (SCM port
);
92 SCM_API SCM
scm_write_char (SCM chr
, SCM port
);
93 SCM_API SCM
scm_printer_apply (SCM proc
, SCM exp
, SCM port
, scm_print_state
*);
94 SCM_API SCM
scm_port_with_print_state (SCM port
, SCM pstate
);
95 SCM_API SCM
scm_get_print_state (SCM port
);
96 SCM_API
int scm_valid_oport_value_p (SCM val
);
97 SCM_INTERNAL
void scm_init_print (void);
100 SCM_API SCM
scm_current_pstate (void);
103 #endif /* SCM_PRINT_H */