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guile/libguile/gsubr.h
Andy Wingo fd12a19a5e subrs are now VM trampoline procedures
* libguile/_scm.h: Add foreign.h and programs.h to the private include
  list, as snarfing subrs with static allocation now needs access to
  some of their enums and macros.

* libguile/gsubr.c (create_gsubr): Instead of creating a tc7_gsubr
  object, create a VM program with the call-subr opcode, so that the
  representation of subrs is now gsubrs. CPP and elisp, together at
  last.
  (scm_subr_objcode_trampoline): New function, used by the SCM_DEFINE
  snarf macro.

* libguile/gsubr.h (SCM_SUBR_META_INFO, SCM_SUBR_PROPS)
  (SCM_SET_SUBR_GENERIC_LOC, SCM_SUBR_ARITY_TO_TYPE): Remove these
  macros. They were never deprecated, but hopefully people aren't using
  them.
  (SCM_SUBRF, SCM_SUBR_NAME, SCM_SUBR_GENERIC, SCM_SET_SUBR_GENERIC):
  Update to work on the new subr representation.

* libguile/objcodes.h (SCM_F_OBJCODE_IS_STATIC): New flag, indicates
  that the "backing store" of the objcode is statically allocated.

* libguile/procprop.c (scm_sym_name): Define here instead of in gsubr.c.

* libguile/snarf.h (SCM_DEFINE): If we are doing static allocation,
  statically allocate the foreign object, the object table, and the
  program, and use some SCM_SNARF_INITtery to fix things up.
  Unfortunately I have not been able to make this immutable. It might be
  possible, though.
  (SCM_IMMUTABLE_CELL, SCM_STATIC_DOUBLE_CELL, SCM_IMMUTABLE_FOREIGN):
  (SCM_STATIC_SUBR_OBJVECT, SCM_STATIC_PROGRAM): New helper macros.
2010-01-07 23:49:25 +01:00

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/* classes: h_files */
#ifndef SCM_GSUBR_H
#define SCM_GSUBR_H
/* Copyright (C) 1995,1996,1998,2000,2001, 2006, 2008, 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
*/
#include "libguile/__scm.h"
SCM_API SCM scm_subr_objcode_trampoline (unsigned int nreq,
unsigned int nopt,
unsigned int rest);
/* Subrs
*/
#define SCM_PRIMITIVE_P(x) (SCM_NIMP (x) && SCM_TYP7 (x) == scm_tc7_gsubr)
#define SCM_PRIMITIVE_GENERIC_P(x) (SCM_PROGRAM_P (x) && SCM_PROGRAM_IS_PRIMITIVE_GENERIC (x))
#define SCM_SUBRF(x) ((SCM (*)()) (SCM_FOREIGN_OBJECT (SCM_SIMPLE_VECTOR_REF (SCM_PROGRAM_OBJTABLE (x), 0), void*)))
#define SCM_SUBR_NAME(x) (SCM_SIMPLE_VECTOR_REF (SCM_PROGRAM_OBJTABLE (x), 1))
#define SCM_SUBR_GENERIC(x) \
(SCM_FOREIGN_OBJECT_REF (SCM_SIMPLE_VECTOR_REF (SCM_PROGRAM_OBJTABLE (x), 2), SCM*))
#define SCM_SET_SUBR_GENERIC(x, g) \
(*SCM_SUBR_GENERIC (x) = (g))
/* Return an integer describing the arity of GSUBR, a subr of type
`scm_tc7_gsubr'. The result can be interpreted with `SCM_GSUBR_REQ ()'
and similar. */
#define SCM_GSUBR_TYPE(gsubr) (SCM_CELL_TYPE (gsubr) >> 8)
#define SCM_GSUBR_MAKTYPE(req, opt, rst) ((req)|((opt)<<4)|((rst)<<8))
#define SCM_GSUBR_MAX 33
#define SCM_GSUBR_REQ(x) ((long)(x)&0xf)
#define SCM_GSUBR_OPT(x) (((long)(x)&0xf0)>>4)
#define SCM_GSUBR_REST(x) ((long)(x)>>8)
SCM_API SCM scm_c_make_gsubr (const char *name,
int req, int opt, int rst, SCM (*fcn) ());
SCM_API SCM scm_c_make_gsubr_with_generic (const char *name,
int req, int opt, int rst,
SCM (*fcn) (), SCM *gf);
SCM_API SCM scm_c_define_gsubr (const char *name,
int req, int opt, int rst, SCM (*fcn) ());
SCM_API SCM scm_c_define_gsubr_with_generic (const char *name,
int req, int opt, int rst,
SCM (*fcn) (), SCM *gf);
SCM_INTERNAL SCM scm_i_gsubr_apply (SCM proc, SCM arg, ...);
SCM_INTERNAL SCM scm_i_gsubr_apply_list (SCM proc, SCM args);
SCM_INTERNAL SCM scm_i_gsubr_apply_array (SCM proc, SCM *args, int nargs,
int headroom);
SCM_INTERNAL void scm_init_gsubr (void);
#endif /* SCM_GSUBR_H */
/*
Local Variables:
c-file-style: "gnu"
End:
*/