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/* classes: h_files */
#ifndef SCM_PRINT_H
#define SCM_PRINT_H
/* Copyright (C) 1995, 1996, 1998, 2000, 2001, 2003, 2004, 2006, 2008,
* 2010, 2012, 2017 Free Software Foundation, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 3 of
* the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA
*/
#include "libguile/__scm.h"
#include "libguile/chars.h"
#include "libguile/options.h"
/* State information passed around during printing.
*/
#define SCM_PRINT_STATE_P(obj) (SCM_STRUCTP(obj) \
&& (scm_is_eq (SCM_STRUCT_VTABLE(obj), \
scm_print_state_vtable)))
#define SCM_PRINT_STATE(obj) ((scm_print_state *) SCM_STRUCT_DATA (obj))
#define RESET_PRINT_STATE(pstate) \
do { \
pstate->list_offset = 0; \
pstate->top = 0; \
} while (0)
#define SCM_WRITINGP(pstate) ((pstate)->writingp)
#define SCM_SET_WRITINGP(pstate, x) { (pstate)->writingp = (x); }
#define SCM_PORT_WITH_PS_P(p) SCM_TYP16_PREDICATE (scm_tc16_port_with_ps, p)
#define SCM_PORT_WITH_PS_PORT(p) SCM_CAR (SCM_CELL_OBJECT_1 (p))
#define SCM_PORT_WITH_PS_PS(p) SCM_CDR (SCM_CELL_OBJECT_1 (p))
#define SCM_COERCE_OUTPORT(p) \
(SCM_PORT_WITH_PS_P (p) ? SCM_PORT_WITH_PS_PORT (p) : p)
#define SCM_PRINT_STATE_LAYOUT "pruwuwuwuwuwpwuwuwurprpw"
typedef struct scm_print_state {
SCM handle; /* Struct handle */
int revealed; /* Has the state escaped to Scheme? */
unsigned long writingp; /* Writing? */
unsigned long fancyp; /* Fancy printing? */
unsigned long level; /* Max level */
unsigned long length; /* Max number of objects per level */
SCM hot_ref; /* Hot reference */
unsigned long list_offset;
unsigned long top; /* Top of reference stack */
unsigned long ceiling; /* Max size of reference stack */
SCM ref_vect; /* Stack of references used during
circular reference detection;
a simple vector. */
SCM highlight_objects; /* List of objects to be highlighted */
} scm_print_state;
SCM_API SCM scm_print_state_vtable;
SCM_API scm_t_bits scm_tc16_port_with_ps;
SCM_API SCM scm_print_options (SCM setting);
SCM_API SCM scm_make_print_state (void);
SCM_API void scm_free_print_state (SCM print_state);
SCM_INTERNAL SCM scm_i_port_with_print_state (SCM port, SCM print_state);
SCM_API void scm_intprint (scm_t_intmax n, int radix, SCM port);
SCM_API void scm_uintprint (scm_t_uintmax n, int radix, SCM port);
SCM_API void scm_ipruk (char *hdr, SCM ptr, SCM port);
SCM_API void scm_iprlist (char *hdr, SCM exp, int tlr, SCM port, scm_print_state *pstate);
SCM_API void scm_print_symbol_name (const char *str, size_t len, SCM port);
SCM_API void scm_prin1 (SCM exp, SCM port, int writingp);
SCM_API void scm_iprin1 (SCM exp, SCM port, scm_print_state *pstate);
SCM_API SCM scm_write (SCM obj, SCM port);
SCM_API SCM scm_display (SCM obj, SCM port);
SCM_API SCM scm_simple_format (SCM port, SCM message, SCM args);
SCM_API SCM scm_newline (SCM port);
SCM_API SCM scm_write_char (SCM chr, SCM port);
SCM_API SCM scm_printer_apply (SCM proc, SCM exp, SCM port, scm_print_state *);
SCM_API SCM scm_port_with_print_state (SCM port, SCM pstate);
SCM_API SCM scm_get_print_state (SCM port);
SCM_API int scm_valid_oport_value_p (SCM val);
SCM_INTERNAL void scm_init_print (void);
#ifdef GUILE_DEBUG
SCM_API SCM scm_current_pstate (void);
#endif
#endif /* SCM_PRINT_H */
/*
Local Variables:
c-file-style: "gnu"
End:
*/
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