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guile/libguile/print.h
Jim Blandy 7dc6e7547a * __scm.h, alist.c, async.c, async.h, backtrace.h, chars.c, 
continuations.c, debug.c, debug.h, dynl-dl.c, dynl.c, dynl.h,
dynwind.c, dynwind.h, eq.c, error.c, error.h, eval.c, eval.h,
feature.c, filesys.c, filesys.h, fports.c, fports.h, gc.c, gc.h,
genio.c, genio.h, gh.h, gh_data.c, gsubr.c, gsubr.h, hash.c,
hashtab.c, init.c, init.h, ioext.c, ioext.h, kw.c, libguile.h,
list.c, list.h, load.c, load.h, mallocs.c, markers.c,
mit-pthreads.c, net_db.c, numbers.c, numbers.h, options.c,
ports.c, ports.h, posix.c, posix.h, print.c, print.h, procprop.c,
procprop.h, procs.c, procs.h, ramap.c, ramap.h, regex-posix.c,
regex-posix.h, root.c, root.h, scmsigs.c, scmsigs.h, script.c,
script.h, simpos.c, simpos.h, smob.c, smob.h, snarf.h, socket.c,
srcprop.c, stackchk.c, stackchk.h, stacks.c, stime.c, stime.h,
strings.c, strings.h, strports.c, struct.c, struct.h, symbols.c,
symbols.h, tags.h, threads.c, throw.h, unif.c, variable.c,
vectors.c, vectors.h, version.h, vports.c, weaks.c: Update
copyright years.
1998-10-19 21:36:50 +00:00

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/* classes: h_files */
#ifndef PRINTH
#define PRINTH
/* Copyright (C) 1995,1996,1998 Free Software Foundation, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this software; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307 USA
*
* As a special exception, the Free Software Foundation gives permission
* for additional uses of the text contained in its release of GUILE.
*
* The exception is that, if you link the GUILE library with other files
* to produce an executable, this does not by itself cause the
* resulting executable to be covered by the GNU General Public License.
* Your use of that executable is in no way restricted on account of
* linking the GUILE library code into it.
*
* This exception does not however invalidate any other reasons why
* the executable file might be covered by the GNU General Public License.
*
* This exception applies only to the code released by the
* Free Software Foundation under the name GUILE. If you copy
* code from other Free Software Foundation releases into a copy of
* GUILE, as the General Public License permits, the exception does
* not apply to the code that you add in this way. To avoid misleading
* anyone as to the status of such modified files, you must delete
* this exception notice from them.
*
* If you write modifications of your own for GUILE, it is your choice
* whether to permit this exception to apply to your modifications.
* If you do not wish that, delete this exception notice. */
#include "libguile/__scm.h"
#include "libguile/options.h"
extern scm_option scm_print_opts[];
#define SCM_PRINT_CLOSURE ((SCM) scm_print_opts[0].val)
#define SCM_PRINT_SOURCE_P ((int) scm_print_opts[1].val)
#define SCM_N_PRINT_OPTIONS 2
/* State information passed around during printing.
*/
#define SCM_PRINT_STATE_P(obj) (SCM_STRUCTP(obj) \
&& (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) \
{ \
pstate->list_offset = 0; \
pstate->top = 0; \
}
#define SCM_WRITINGP(pstate) ((pstate)->writingp)
#define SCM_SET_WRITINGP(pstate, x) { (pstate)->writingp = (x); }
#define SCM_COERCE_OUTPORT(p) ((SCM_NIMP (p) \
&& SCM_CONSP (p) \
&& SCM_PRINT_STATE_P (SCM_CDR (p))) \
? SCM_CAR (p) \
: p)
#define SCM_PRINT_STATE_LAYOUT "sruwuwuwuwuwpwuwuwuruopr"
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_stack; /* Stack of references used during
circular reference detection */
SCM ref_vect;
} scm_print_state;
extern SCM scm_print_state_vtable;
extern SCM scm_print_options SCM_P ((SCM setting));
SCM scm_make_print_state SCM_P ((void));
void scm_free_print_state SCM_P ((SCM print_state));
extern void scm_intprint SCM_P ((long n, int radix, SCM port));
extern void scm_ipruk SCM_P ((char *hdr, SCM ptr, SCM port));
extern void scm_iprlist SCM_P ((char *hdr, SCM exp, int tlr, SCM port, scm_print_state *pstate));
extern void scm_prin1 SCM_P ((SCM exp, SCM port, int writingp));
extern void scm_iprin1 SCM_P ((SCM exp, SCM port, scm_print_state *pstate));
extern SCM scm_write SCM_P ((SCM obj, SCM port));
extern SCM scm_display SCM_P ((SCM obj, SCM port));
extern SCM scm_newline SCM_P ((SCM port));
extern SCM scm_write_char SCM_P ((SCM chr, SCM port));
extern SCM scm_printer_apply SCM_P ((SCM proc, SCM exp, SCM port,
scm_print_state *));
extern int scm_valid_oport_value_p SCM_P ((SCM val));
extern void scm_init_print SCM_P ((void));
#ifdef GUILE_DEBUG
extern SCM scm_current_pstate SCM_P ((void));
#endif
#endif /* PRINTH */
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