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Diffstat (limited to 'libguile/print.h')
-rw-r--r-- | libguile/print.h | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/libguile/print.h b/libguile/print.h new file mode 100644 index 000000000..b9cc20a6b --- /dev/null +++ b/libguile/print.h @@ -0,0 +1,111 @@ +#ifndef SCM_PRINT_H +#define SCM_PRINT_H + +/* Copyright 1995-1996,1998,2000-2001,2003-2004,2006,2008,2010,2012,2017-2018 + Free Software Foundation, Inc. + + This file is part of Guile. + + Guile 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. + + Guile 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 Guile. If not, see + <https://www.gnu.org/licenses/>. */ + + + +#include "libguile/chars.h" +#include <libguile/error.h> +#include <libguile/gc.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_CELL_OBJECT_1 (p) +#define SCM_PORT_WITH_PS_PS(p) SCM_CELL_OBJECT_2 (p) + +#define SCM_COERCE_OUTPORT(p) \ + (SCM_PORT_WITH_PS_P (p) ? SCM_PORT_WITH_PS_PORT (p) : p) + +#define SCM_VALIDATE_OPORT_VALUE(pos, port) \ + do { \ + SCM_ASSERT (scm_valid_oport_value_p (port), port, pos, FUNC_NAME); \ + } while (0) + +#define SCM_VALIDATE_PRINTSTATE(pos, a) \ + SCM_MAKE_VALIDATE_MSG(pos, a, PRINT_STATE_P, "print-state") + +#define SCM_PRINT_STATE_LAYOUT "pwuwuwuwuwuwpwuwuwuwpwpw" +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 (intmax_t n, int radix, SCM port); +SCM_API void scm_uintprint (uintmax_t 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 */ |