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guile/libguile/programs.h
Andy Wingo 1d1cae0e2e continuations are vm procedures
* libguile/vm-i-system.c (continuation-call): New op, like subr-call or
  foreign-call, but for continuations.

* libguile/continuations.h: Add scm_i_continuation_call internal
  declaration.
  (SCM_CONTINUATIONP): Reimplement in terms of
  SCM_PROGRAM_IS_CONTINUATION.
  (scm_tc16_continuation, SCM_CONTREGS, SCM_CONTINUATION_LENGTH)
  (SCM_SET_CONTINUATION_LENGTH, SCM_JMPBUF, SCM_DYNENV, SCM_THROW_VALUE)
  (SCM_CONTINUATION_ROOT, SCM_DFRAME): Remove these from the exposed
  API.
  (scm_i_continuation_to_frame): New internal declaration.
* libguile/continuations.c
* libguile/continuations.c: Add trickery like in foreign.c, smob.c, and
  gsubr.c, so that we can make procedural trampolines for continuations.
  (scm_i_continuation_to_frame): New internal function, from stacks.c.

* libguile/programs.h (SCM_F_PROGRAM_IS_CONTINUATION)
  (SCM_PROGRAM_IS_CONTINUATION): Add a flag for programs that are
  continuations. Probably should add flags for the other trampoline
  types too.
* libguile/programs.c (scm_i_program_print): Print continuations as
  before.

* libguile/stacks.c (scm_stack_id, scm_make_stack): Use
  scm_i_continuation_to_frame in the continuation case.
2010-02-08 13:00:54 +01:00

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3.3 KiB
C

/* Copyright (C) 2001, 2009, 2010 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
*/
#ifndef _SCM_PROGRAMS_H_
#define _SCM_PROGRAMS_H_
#include <libguile.h>
#include <libguile/objcodes.h>
/*
* Programs
*/
#define SCM_F_PROGRAM_IS_BOOT 0x100
#define SCM_F_PROGRAM_IS_PRIMITIVE 0x200
#define SCM_F_PROGRAM_IS_PRIMITIVE_GENERIC 0x400
#define SCM_F_PROGRAM_IS_CONTINUATION 0x800
#define SCM_PROGRAM_P(x) (!SCM_IMP (x) && SCM_TYP7(x) == scm_tc7_program)
#define SCM_PROGRAM_OBJCODE(x) (SCM_CELL_OBJECT_1 (x))
#define SCM_PROGRAM_OBJTABLE(x) (SCM_CELL_OBJECT_2 (x))
#define SCM_PROGRAM_FREE_VARIABLES(x) (SCM_CELL_OBJECT_LOC (x, 3))
#define SCM_PROGRAM_FREE_VARIABLE_REF(x,i) (SCM_PROGRAM_FREE_VARIABLES (x)[i])
#define SCM_PROGRAM_FREE_VARIABLE_SET(x,i,v) (SCM_PROGRAM_FREE_VARIABLES (x)[i]=(v))
#define SCM_PROGRAM_NUM_FREE_VARIABLES(x) (SCM_CELL_WORD_0 (x) >> 16)
#define SCM_PROGRAM_DATA(x) (SCM_OBJCODE_DATA (SCM_PROGRAM_OBJCODE (x)))
#define SCM_VALIDATE_PROGRAM(p,x) SCM_MAKE_VALIDATE (p, x, PROGRAM_P)
#define SCM_PROGRAM_IS_BOOT(x) (SCM_CELL_WORD_0 (x) & SCM_F_PROGRAM_IS_BOOT)
#define SCM_PROGRAM_IS_PRIMITIVE(x) (SCM_CELL_WORD_0 (x) & SCM_F_PROGRAM_IS_PRIMITIVE)
#define SCM_PROGRAM_IS_PRIMITIVE_GENERIC(x) (SCM_CELL_WORD_0 (x) & SCM_F_PROGRAM_IS_PRIMITIVE_GENERIC)
#define SCM_PROGRAM_IS_CONTINUATION(x) (SCM_CELL_WORD_0 (x) & SCM_F_PROGRAM_IS_CONTINUATION)
SCM_API SCM scm_make_program (SCM objcode, SCM objtable, SCM free_variables);
SCM_API SCM scm_program_p (SCM obj);
SCM_API SCM scm_program_base (SCM program);
SCM_API SCM scm_program_meta (SCM program);
SCM_API SCM scm_program_bindings (SCM program);
SCM_API SCM scm_program_sources (SCM program);
SCM_API SCM scm_program_source (SCM program, SCM ip);
SCM_API SCM scm_program_arities (SCM program);
SCM_API SCM scm_program_properties (SCM program);
SCM_API SCM scm_program_name (SCM program);
SCM_API SCM scm_program_objects (SCM program);
SCM_API SCM scm_program_module (SCM program);
SCM_API SCM scm_program_num_free_variables (SCM program);
SCM_API SCM scm_program_free_variable_ref (SCM program, SCM i);
SCM_API SCM scm_program_free_variable_set_x (SCM program, SCM i, SCM x);
SCM_API SCM scm_program_objcode (SCM program);
SCM_API SCM scm_c_program_source (SCM program, size_t ip);
SCM_INTERNAL int scm_i_program_arity (SCM program, int *req, int *opt, int *rest);
SCM_INTERNAL void scm_i_program_print (SCM program, SCM port,
scm_print_state *pstate);
SCM_INTERNAL void scm_bootstrap_programs (void);
SCM_INTERNAL void scm_init_programs (void);
#endif /* _SCM_PROGRAMS_H_ */
/*
Local Variables:
c-file-style: "gnu"
End:
*/