-/* classes: h_files */
-
-#ifndef SCM_STACKS_H
-#define SCM_STACKS_H
-/* Copyright (C) 1995,1996,2000,2001 Free Software Foundation
- *
- * 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 */
-
-/* Software engineering face-lift by Greg J. Badros, 11-Dec-1999,
- gjb@cs.washington.edu, http://www.cs.washington.edu/homes/gjb */
-\f
-
-#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;
-
-#if (SCM_DEBUG_DEPRECATED == 0)
-# define scm_info_frame scm_t_info_frame
-# define scm_stack scm_t_stack
-#endif
-
-extern SCM scm_t_stackype;
-
-#define SCM_STACKP(obj) (SCM_STRUCTP (obj) && SCM_EQ_P (SCM_STRUCT_VTABLE (obj), scm_t_stackype))
-#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)
-
-\f
-
-SCM scm_stack_p (SCM obj);
-SCM scm_make_stack (SCM obj, SCM args);
-SCM scm_stack_id (SCM stack);
-SCM scm_stack_ref (SCM stack, SCM i);
-SCM scm_stack_length (SCM stack);
-
-SCM scm_frame_p (SCM obj);
-SCM scm_last_stack_frame (SCM obj);
-SCM scm_frame_number (SCM frame);
-SCM scm_frame_source (SCM frame);
-SCM scm_frame_procedure (SCM frame);
-SCM scm_frame_arguments (SCM frame);
-SCM scm_frame_previous (SCM frame);
-SCM scm_frame_next (SCM frame);
-SCM scm_frame_real_p (SCM frame);
-SCM scm_frame_procedure_p (SCM frame);
-SCM scm_frame_evaluating_args_p (SCM frame);
-SCM scm_frame_overflow_p (SCM frame);
-
-
-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
+ */
+
+\f
+
+#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))
+
+
+\f
+
+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:
+*/
HCoop / bpt / guile.git / blobdiff