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110 lines
3.9 KiB
C
110 lines
3.9 KiB
C
/* classes: h_files */
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#ifndef SCM_PRINT_H
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#define SCM_PRINT_H
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/* Copyright (C) 1995,1996,1998,2000,2001, 2003 Free Software Foundation, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "libguile/__scm.h"
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#include "libguile/options.h"
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SCM_API scm_t_option scm_print_opts[];
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#define SCM_PRINT_CLOSURE (SCM_PACK (scm_print_opts[0].val))
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#define SCM_PRINT_SOURCE_P ((int) scm_print_opts[1].val)
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#define SCM_N_PRINT_OPTIONS 2
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/* State information passed around during printing.
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*/
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#define SCM_PRINT_STATE_P(obj) (SCM_STRUCTP(obj) \
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&& (scm_is_eq (SCM_STRUCT_VTABLE(obj), \
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scm_print_state_vtable)))
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#define SCM_PRINT_STATE(obj) ((scm_print_state *) SCM_STRUCT_DATA (obj))
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#define RESET_PRINT_STATE(pstate) \
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do { \
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pstate->list_offset = 0; \
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pstate->top = 0; \
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} while (0)
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#define SCM_WRITINGP(pstate) ((pstate)->writingp)
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#define SCM_SET_WRITINGP(pstate, x) { (pstate)->writingp = (x); }
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#define SCM_PORT_WITH_PS_P(p) SCM_TYP16_PREDICATE (scm_tc16_port_with_ps, p)
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#define SCM_PORT_WITH_PS_PORT(p) SCM_CAR (SCM_CELL_OBJECT_1 (p))
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#define SCM_PORT_WITH_PS_PS(p) SCM_CDR (SCM_CELL_OBJECT_1 (p))
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#define SCM_COERCE_OUTPORT(p) \
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(SCM_PORT_WITH_PS_P (p) ? SCM_PORT_WITH_PS_PORT (p) : p)
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#define SCM_PRINT_STATE_LAYOUT "sruwuwuwuwuwpwuwuwuruopr"
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typedef struct scm_print_state {
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SCM handle; /* Struct handle */
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int revealed; /* Has the state escaped to Scheme? */
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unsigned long writingp; /* Writing? */
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unsigned long fancyp; /* Fancy printing? */
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unsigned long level; /* Max level */
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unsigned long length; /* Max number of objects per level */
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SCM hot_ref; /* Hot reference */
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unsigned long list_offset;
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unsigned long top; /* Top of reference stack */
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unsigned long ceiling; /* Max size of reference stack */
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SCM *ref_stack; /* Stack of references used during
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circular reference detection */
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SCM ref_vect;
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} scm_print_state;
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SCM_API SCM scm_print_state_vtable;
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SCM_API scm_t_bits scm_tc16_port_with_ps;
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SCM_API SCM scm_print_options (SCM setting);
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SCM_API SCM scm_make_print_state (void);
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SCM_API void scm_free_print_state (SCM print_state);
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SCM scm_i_port_with_print_state (SCM port, SCM print_state);
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SCM_API void scm_intprint (long n, int radix, SCM port);
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SCM_API void scm_ipruk (char *hdr, SCM ptr, SCM port);
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SCM_API void scm_iprlist (char *hdr, SCM exp, int tlr, SCM port, scm_print_state *pstate);
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SCM_API void scm_print_symbol_name (const char *str, size_t len, SCM port);
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SCM_API void scm_prin1 (SCM exp, SCM port, int writingp);
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SCM_API void scm_iprin1 (SCM exp, SCM port, scm_print_state *pstate);
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SCM_API SCM scm_write (SCM obj, SCM port);
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SCM_API SCM scm_display (SCM obj, SCM port);
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SCM_API SCM scm_simple_format (SCM port, SCM message, SCM args);
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SCM_API SCM scm_newline (SCM port);
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SCM_API SCM scm_write_char (SCM chr, SCM port);
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SCM_API SCM scm_printer_apply (SCM proc, SCM exp, SCM port, scm_print_state *);
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SCM_API SCM scm_port_with_print_state (SCM port, SCM pstate);
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SCM_API SCM scm_get_print_state (SCM port);
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SCM_API int scm_valid_oport_value_p (SCM val);
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SCM_API void scm_init_print (void);
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#ifdef GUILE_DEBUG
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SCM_API SCM scm_current_pstate (void);
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#endif
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#endif /* SCM_PRINT_H */
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/*
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Local Variables:
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c-file-style: "gnu"
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End:
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*/
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