libguile/snarf.h

   1 /* classes: h_files */
   2
   3 /* Macros for snarfing initialization actions from C source. */
   4
   5 #ifndef LIBGUILE_SNARF_H
   6 #define LIBGUILE_SNARF_H
   7
   8 /*      Copyright (C) 1995-2000 Free Software Foundation, Inc.
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2, or (at your option)
  13  * any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this software; see the file COPYING.  If not, write to
  22  * the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
  23  * Boston, MA 02111-1307 USA
  24  *
  25  * As a special exception, the Free Software Foundation gives permission
  26  * for additional uses of the text contained in its release of GUILE.
  27  *
  28  * The exception is that, if you link the GUILE library with other files
  29  * to produce an executable, this does not by itself cause the
  30  * resulting executable to be covered by the GNU General Public License.
  31  * Your use of that executable is in no way restricted on account of
  32  * linking the GUILE library code into it.
  33  *
  34  * This exception does not however invalidate any other reasons why
  35  * the executable file might be covered by the GNU General Public License.
  36  *
  37  * This exception applies only to the code released by the
  38  * Free Software Foundation under the name GUILE.  If you copy
  39  * code from other Free Software Foundation releases into a copy of
  40  * GUILE, as the General Public License permits, the exception does
  41  * not apply to the code that you add in this way.  To avoid misleading
  42  * anyone as to the status of such modified files, you must delete
  43  * this exception notice from them.
  44  *
  45  * If you write modifications of your own for GUILE, it is your choice
  46  * whether to permit this exception to apply to your modifications.
  47  * If you do not wish that, delete this exception notice.  */
  48
  49 /* Software engineering face-lift by Greg J. Badros, 11-Dec-1999,
  50    gjb@cs.washington.edu, http://www.cs.washington.edu/homes/gjb */
  51
  52 \f
  53
  54 #if defined(__cplusplus) || defined(GUILE_CPLUSPLUS_SNARF)
  55 #define SCM_FUNC_CAST_ARBITRARY_ARGS SCM (*)(...)
  56 #else
  57 #define SCM_FUNC_CAST_ARBITRARY_ARGS SCM (*)()
  58 #endif
  59
  60 /* Generic macros to be used in user macro definitions.
  61  *
  62  * For example, in order to define a macro which creates ints and
  63  * initializes them to the result of foo (), do:
  64  *
  65  *   #define SCM_FOO(NAME) \
  66  *     SCM_HERE (int NAME) \
  67  *     SCM_INIT (NAME = foo ())
  68  *
  69  * The SCM_INIT text goes into the corresponding .x file
  70  * up through the first occurrence of $$$ on that line, if any.
  71  */
  72
  73 #ifndef SCM_MAGIC_SNARFER
  74 #  define SCM_HERE(X) X
  75 #  define SCM_INIT(X)
  76 #else
  77 #  define SCM_HERE(X)
  78 #  define SCM_INIT(X) %%% X
  79 #endif
  80
  81 #define SCM_DEFINE(FNAME, PRIMNAME, REQ, OPT, VAR, ARGLIST, DOCSTRING) \
  82 SCM_HERE(\
  83 static const char s_ ## FNAME [] = PRIMNAME; \
  84 SCM FNAME ARGLIST\
  85 )\
  86 SCM_INIT(\
  87 scm_make_gsubr (s_ ## FNAME, REQ, OPT, VAR, (SCM_FUNC_CAST_ARBITRARY_ARGS) FNAME); \
  88 $$$P PRIMNAME #ARGLIST | REQ | OPT | VAR | __FILE__:__LINE__ | @@@ DOCSTRING @!!! \
  89 )
  90
  91 #define SCM_DEFINE1(FNAME, PRIMNAME, TYPE, ARGLIST, DOCSTRING) \
  92 SCM_HERE(\
  93 static const char s_ ## FNAME [] = PRIMNAME; \
  94 SCM FNAME ARGLIST\
  95 )SCM_INIT(\
  96 scm_make_subr (s_ ## FNAME, TYPE, FNAME); \
  97 $$$1 PRIMNAME #ARGLIST | 2 | 0 | 0 | __FILE__:__LINE__ | @@@ DOCSTRING @!!! \
  98 )
  99
 100 #define SCM_PROC(RANAME, STR, REQ, OPT, VAR, CFN)  \
 101 SCM_HERE(static const char RANAME[]=STR) \
 102 SCM_INIT(\
 103 scm_make_gsubr (RANAME, REQ, OPT, VAR, (SCM_FUNC_CAST_ARBITRARY_ARGS) CFN) \
 104 )
 105
 106 #define SCM_REGISTER_PROC(RANAME, STR, REQ, OPT, VAR, CFN)  \
 107 SCM_HERE(\
 108 static const char RANAME[]=STR \
 109 )SCM_INIT(\
 110 scm_make_gsubr (RANAME, REQ, OPT, VAR, (SCM_FUNC_CAST_ARBITRARY_ARGS) CFN); \
 111 $$$R STR | REQ | OPT | VAR | __FILE__:__LINE__ | @@@ CFN @!!! \
 112 )
 113
 114 #define SCM_GPROC(RANAME, STR, REQ, OPT, VAR, CFN, GF)  \
 115 SCM_HERE(\
 116 static const char RANAME[]=STR;\
 117 static SCM GF = 0 \
 118 )SCM_INIT(\
 119 scm_make_gsubr_with_generic (RANAME, REQ, OPT, VAR, (SCM_FUNC_CAST_ARBITRARY_ARGS) CFN, &GF) \
 120 )
 121
 122 #define SCM_PROC1(RANAME, STR, TYPE, CFN) \
 123 SCM_HERE(static const char RANAME[]=STR) \
 124 SCM_INIT(\
 125 scm_make_subr(RANAME, TYPE, (SCM (*)(...))CFN) \
 126 )
 127
 128
 129 #define SCM_GPROC1(RANAME, STR, TYPE, CFN, GF) \
 130 SCM_HERE(\
 131 static const char RANAME[]=STR; \
 132 static SCM GF = 0 \
 133 )SCM_INIT(\
 134 scm_make_subr_with_generic(RANAME, TYPE, (SCM_FUNC_CAST_ARBITRARY_ARGS) CFN, &GF) \
 135 )
 136
 137 #define SCM_SYNTAX(RANAME, STR, TYPE, CFN)  \
 138 SCM_HERE(static const char RANAME[]=STR)\
 139 SCM_INIT(scm_make_synt (RANAME, TYPE, CFN))
 140
 141 #define SCM_SYMBOL(c_name, scheme_name) \
 142 SCM_HERE(static SCM c_name = SCM_BOOL_F) \
 143 SCM_INIT(c_name = scm_permanent_object (SCM_CAR (scm_intern0 (scheme_name))))
 144
 145 #define SCM_GLOBAL_SYMBOL(c_name, scheme_name) \
 146 SCM_HERE(SCM c_name = SCM_BOOL_F) \
 147 SCM_INIT(c_name = scm_permanent_object (SCM_CAR (scm_intern0 (scheme_name))))
 148
 149 #define SCM_KEYWORD(c_name, scheme_name) \
 150 SCM_HERE(static SCM c_name = SCM_BOOL_F) \
 151 SCM_INIT(c_name = scm_permanent_object (scm_c_make_keyword (scheme_name)))
 152
 153 #define SCM_GLOBAL_KEYWORD(c_name, scheme_name) \
 154 SCM_HERE(SCM c_name = SCM_BOOL_F) \
 155 SCM_INIT(c_name = scm_permanent_object (scm_c_make_keyword (scheme_name)))
 156
 157 #define SCM_VCELL(c_name, scheme_name) \
 158 SCM_HERE(static SCM c_name = SCM_BOOL_F) \
 159 SCM_INIT(c_name = scm_permanent_object (scm_intern0 (scheme_name)); SCM_SETCDR (c_name, SCM_BOOL_F))
 160
 161 #define SCM_GLOBAL_VCELL(c_name, scheme_name) \
 162 SCM_HERE(SCM c_name = SCM_BOOL_F) \
 163 SCM_INIT(c_name = scm_permanent_object (scm_intern0 (scheme_name)); SCM_SETCDR (c_name, SCM_BOOL_F))
 164
 165 #define SCM_VCELL_INIT(c_name, scheme_name, init_val) \
 166 SCM_HERE(static SCM c_name = SCM_BOOL_F) \
 167 SCM_INIT(c_name = scm_permanent_object (scm_intern0 (scheme_name)); SCM_SETCDR (c_name, init_val))
 168
 169 #define SCM_GLOBAL_VCELL_INIT(c_name, scheme_name, init_val) \
 170 SCM_HERE(SCM c_name = SCM_BOOL_F) \
 171 SCM_INIT(c_name = scm_permanent_object (scm_intern0 (scheme_name)); SCM_SETCDR (c_name, init_val))
 172
 173 #define SCM_CONST_LONG(c_name, scheme_name,value) \
 174 SCM_VCELL_INIT(c_name, scheme_name, scm_long2num(value))
 175
 176 #ifdef SCM_MAGIC_SNARFER
 177 #undef SCM_ASSERT
 178 #define SCM_ASSERT(_cond, _arg, _pos, _subr) *&*&*&*SCM_ARG_BETTER_BE_IN_POSITION(_arg,_pos,__LINE__)
 179 #endif /* SCM_MAGIC_SNARFER */
 180
 181 #endif /* LIBGUILE_SNARF_H */
 182