libguile/stacks.h

   1 /* classes: h_files */
   2
   3 #ifndef SCM_STACKS_H
   4 #define SCM_STACKS_H
   5
   6 /* Copyright (C) 1995,1996,2000,2001, 2004, 2006, 2008 Free Software Foundation, Inc.
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public License
  10  * as published by the Free Software Foundation; either version 3 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  21  * 02110-1301 USA
  22  */
  23
  24 \f
  25
  26 #include "libguile/__scm.h"
  27 #include "libguile/frames.h"
  28
  29 /* {Frames and stacks}
  30  */
  31
  32 SCM_API SCM scm_stack_type;
  33
  34 #define SCM_STACK_LAYOUT                        \
  35   "pw" /* len */                                \
  36   "pw" /* id */                                 \
  37   "pw" /* frame */
  38
  39 #define SCM_STACKP(obj) (SCM_STRUCTP (obj) && scm_is_eq (SCM_STRUCT_VTABLE (obj), scm_stack_type))
  40 #define SCM_STACK_LENGTH(obj) (scm_to_long (SCM_STRUCT_SLOT_REF (obj,0)))
  41 #define SCM_SET_STACK_LENGTH(obj,f) (SCM_STRUCT_SLOT_SET (obj,0,scm_from_long (f)))
  42 #define SCM_STACK_ID(obj) (SCM_STRUCT_SLOT_REF (obj,1))
  43 #define SCM_SET_STACK_ID(obj,f) (SCM_STRUCT_SLOT_SET (obj,1,f))
  44 #define SCM_STACK_FRAME(obj) (SCM_STRUCT_SLOT_REF (obj,2))
  45 #define SCM_SET_STACK_FRAME(obj,f) (SCM_STRUCT_SLOT_SET (obj,2,f))
  46
  47 #define SCM_FRAMEP(obj) (SCM_VM_FRAME_P (obj))
  48
  49
  50 \f
  51
  52 SCM_API SCM scm_stack_p (SCM obj);
  53 SCM_API SCM scm_make_stack (SCM obj, SCM args);
  54 SCM_API SCM scm_stack_id (SCM stack);
  55 SCM_API SCM scm_stack_ref (SCM stack, SCM i);
  56 SCM_API SCM scm_stack_length (SCM stack);
  57
  58 SCM_INTERNAL void scm_init_stacks (void);
  59
  60 #endif  /* SCM_STACKS_H */
  61
  62 /*
  63   Local Variables:
  64   c-file-style: "gnu"
  65   End:
  66 */