libguile/gsubr.h

   1 /* classes: h_files */
   2
   3 #ifndef SCM_GSUBR_H
   4 #define SCM_GSUBR_H
   5
   6 /* Copyright (C) 1995,1996,1998,2000,2001, 2006, 2008, 2009, 2010 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
  28
  29 \f
  30
  31
  32 SCM_API SCM scm_subr_objcode_trampoline (unsigned int nreq,
  33                                          unsigned int nopt,
  34                                          unsigned int rest);
  35
  36
  37 /* Subrs
  38  */
  39
  40 /* Max number of args to the C procedure backing a gsubr */
  41 #define SCM_GSUBR_MAX 10
  42
  43 #define SCM_PRIMITIVE_P(x) (SCM_PROGRAM_P (x) && SCM_PROGRAM_IS_PRIMITIVE (x))
  44
  45 #define SCM_PRIMITIVE_GENERIC_P(x) (SCM_PROGRAM_P (x) && SCM_PROGRAM_IS_PRIMITIVE_GENERIC (x))
  46
  47 #define SCM_SUBRF(x)                                                    \
  48   ((SCM (*) (void))                                                     \
  49    SCM_FOREIGN_POINTER (SCM_SIMPLE_VECTOR_REF (SCM_PROGRAM_OBJTABLE (x), 0)))
  50
  51 #define SCM_SUBR_NAME(x) (SCM_SIMPLE_VECTOR_REF (SCM_PROGRAM_OBJTABLE (x), 1))
  52
  53 #define SCM_SUBR_GENERIC(x)                                             \
  54   ((SCM *)                                                              \
  55    SCM_FOREIGN_POINTER (SCM_SIMPLE_VECTOR_REF (SCM_PROGRAM_OBJTABLE (x), 2)))
  56
  57 #define SCM_SET_SUBR_GENERIC(x, g) \
  58   (*SCM_SUBR_GENERIC (x) = (g))
  59
  60 \f
  61
  62 SCM_API SCM scm_c_make_gsubr (const char *name,
  63                               int req, int opt, int rst, SCM (*fcn) ());
  64 SCM_API SCM scm_c_make_gsubr_with_generic (const char *name,
  65                                            int req, int opt, int rst,
  66                                            SCM (*fcn) (), SCM *gf);
  67 SCM_API SCM scm_c_define_gsubr (const char *name,
  68                                 int req, int opt, int rst, SCM (*fcn) ());
  69 SCM_API SCM scm_c_define_gsubr_with_generic (const char *name,
  70                                              int req, int opt, int rst,
  71                                              SCM (*fcn) (), SCM *gf);
  72
  73 SCM_INTERNAL void scm_init_gsubr (void);
  74
  75 #endif  /* SCM_GSUBR_H */
  76
  77 /*
  78   Local Variables:
  79   c-file-style: "gnu"
  80   End:
  81 */