X-Git-Url: https://git.hcoop.net/bpt/guile.git/blobdiff_plain/762e289af546ad81483a63b3d87525194bf29ca5..8051cf23044e5dbbece0d328102197a04ce5718d:/libguile/stacks.h diff --git a/libguile/stacks.h b/libguile/stacks.h dissimilarity index 89% index cdef664de..ba97e0892 100644 --- a/libguile/stacks.h +++ b/libguile/stacks.h @@ -1,145 +1,66 @@ -/* classes: h_files */ - -#ifndef SCM_STACKS_H -#define SCM_STACKS_H - -/* Copyright (C) 1995,1996,2000,2001 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. - * - * The author can be reached at djurfeldt@nada.kth.se - * Mikael Djurfeldt, SANS/NADA KTH, 10044 STOCKHOLM, SWEDEN */ - - - -#include "libguile/__scm.h" - -/* {Frames and stacks} - */ - -typedef struct scm_t_info_frame { - /* SCM flags; */ - scm_t_bits flags; - SCM source; - SCM proc; - SCM args; -} scm_t_info_frame; -#define SCM_FRAME_N_SLOTS (sizeof (scm_t_info_frame) / sizeof (SCM)) - -#define SCM_STACK(obj) ((scm_t_stack *) SCM_STRUCT_DATA (obj)) -#define SCM_STACK_LAYOUT "pwuourpW" -typedef struct scm_t_stack { - SCM id; /* Stack id */ - scm_t_info_frame *frames; /* Info frames */ - unsigned long length; /* Stack length */ - unsigned long tail_length; - scm_t_info_frame tail[1]; -} scm_t_stack; - -SCM_API SCM scm_stack_type; - -#define SCM_STACKP(obj) (SCM_STRUCTP (obj) && SCM_EQ_P (SCM_STRUCT_VTABLE (obj), scm_stack_type)) -#define SCM_STACK_LENGTH(stack) (SCM_STACK (stack) -> length) - -#define SCM_FRAMEP(obj) \ - (SCM_CONSP (obj) && SCM_STACKP (SCM_CAR (obj)) \ - && SCM_INUMP (SCM_CDR (obj)) && SCM_INUM (SCM_CDR (obj)) >= 0 \ - && ((unsigned long int) SCM_INUM (SCM_CDR (obj)) \ - < SCM_STACK_LENGTH (SCM_CAR (obj)))) - -#define SCM_FRAME_REF(frame, slot) \ -(SCM_STACK (SCM_CAR (frame)) -> frames[SCM_INUM (SCM_CDR (frame))].slot) \ - -#define SCM_FRAME_NUMBER(frame) \ -(SCM_BACKWARDS_P \ - ? SCM_INUM (SCM_CDR (frame)) \ - : (SCM_STACK_LENGTH (SCM_CAR (frame)) \ - - SCM_INUM (SCM_CDR (frame)) \ - - 1)) \ - -#define SCM_FRAME_FLAGS(frame) SCM_FRAME_REF (frame, flags) -#define SCM_FRAME_SOURCE(frame) SCM_FRAME_REF (frame, source) -#define SCM_FRAME_PROC(frame) SCM_FRAME_REF (frame, proc) -#define SCM_FRAME_ARGS(frame) SCM_FRAME_REF (frame, args) -#define SCM_FRAME_PREV(frame) scm_frame_previous (frame) -#define SCM_FRAME_NEXT(frame) scm_frame_next (frame) - -#define SCM_FRAMEF_VOID (1L << 2) -#define SCM_FRAMEF_REAL (1L << 3) -#define SCM_FRAMEF_PROC (1L << 4) -#define SCM_FRAMEF_EVAL_ARGS (1L << 5) -#define SCM_FRAMEF_OVERFLOW (1L << 6) - -#define SCM_FRAME_VOID_P(f) (SCM_FRAME_FLAGS (f) & SCM_FRAMEF_VOID) -#define SCM_FRAME_REAL_P(f) (SCM_FRAME_FLAGS (f) & SCM_FRAMEF_REAL) -#define SCM_FRAME_PROC_P(f) (SCM_FRAME_FLAGS (f) & SCM_FRAMEF_PROC) -#define SCM_FRAME_EVAL_ARGS_P(f) (SCM_FRAME_FLAGS (f) & SCM_FRAMEF_EVAL_ARGS) -#define SCM_FRAME_OVERFLOW_P(f) (SCM_FRAME_FLAGS (f) & SCM_FRAMEF_OVERFLOW) - - - -SCM_API SCM scm_stack_p (SCM obj); -SCM_API SCM scm_make_stack (SCM obj, SCM args); -SCM_API SCM scm_stack_id (SCM stack); -SCM_API SCM scm_stack_ref (SCM stack, SCM i); -SCM_API SCM scm_stack_length (SCM stack); - -SCM_API SCM scm_frame_p (SCM obj); -SCM_API SCM scm_last_stack_frame (SCM obj); -SCM_API SCM scm_frame_number (SCM frame); -SCM_API SCM scm_frame_source (SCM frame); -SCM_API SCM scm_frame_procedure (SCM frame); -SCM_API SCM scm_frame_arguments (SCM frame); -SCM_API SCM scm_frame_previous (SCM frame); -SCM_API SCM scm_frame_next (SCM frame); -SCM_API SCM scm_frame_real_p (SCM frame); -SCM_API SCM scm_frame_procedure_p (SCM frame); -SCM_API SCM scm_frame_evaluating_args_p (SCM frame); -SCM_API SCM scm_frame_overflow_p (SCM frame); - -SCM_API void scm_init_stacks (void); - -#endif /* SCM_STACKS_H */ - -/* - Local Variables: - c-file-style: "gnu" - End: -*/ +/* classes: h_files */ + +#ifndef SCM_STACKS_H +#define SCM_STACKS_H + +/* Copyright (C) 1995,1996,2000,2001, 2004, 2006, 2008 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/frames.h" + +/* {Frames and stacks} + */ + +SCM_API SCM scm_stack_type; + +#define SCM_STACK_LAYOUT \ + "pw" /* len */ \ + "pw" /* id */ \ + "pw" /* frame */ + +#define SCM_STACKP(obj) (SCM_STRUCTP (obj) && scm_is_eq (SCM_STRUCT_VTABLE (obj), scm_stack_type)) +#define SCM_STACK_LENGTH(obj) (scm_to_long (SCM_STRUCT_SLOT_REF (obj,0))) +#define SCM_SET_STACK_LENGTH(obj,f) (SCM_STRUCT_SLOT_SET (obj,0,scm_from_long (f))) +#define SCM_STACK_ID(obj) (SCM_STRUCT_SLOT_REF (obj,1)) +#define SCM_SET_STACK_ID(obj,f) (SCM_STRUCT_SLOT_SET (obj,1,f)) +#define SCM_STACK_FRAME(obj) (SCM_STRUCT_SLOT_REF (obj,2)) +#define SCM_SET_STACK_FRAME(obj,f) (SCM_STRUCT_SLOT_SET (obj,2,f)) + +#define SCM_FRAMEP(obj) (SCM_VM_FRAME_P (obj)) + + + + +SCM_API SCM scm_stack_p (SCM obj); +SCM_API SCM scm_make_stack (SCM obj, SCM args); +SCM_API SCM scm_stack_id (SCM stack); +SCM_API SCM scm_stack_ref (SCM stack, SCM i); +SCM_API SCM scm_stack_length (SCM stack); + +SCM_INTERNAL void scm_init_stacks (void); + +#endif /* SCM_STACKS_H */ + +/* + Local Variables: + c-file-style: "gnu" + End: +*/