libguile/snarf.h

   1 /* classes: h_files */
   2
   3 #ifndef SCM_SNARF_H
   4 #define SCM_SNARF_H
   5
   6 /* Copyright (C) 1995,1996,1997,1998,1999,2000,2001, 2002, 2003, 2004, 2006, 2009 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
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but 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 02110-1301 USA
  21  */
  22
  23 \f
  24
  25 /* Macros for snarfing initialization actions from C source. */
  26
  27 #if defined(__cplusplus) || defined(GUILE_CPLUSPLUS_SNARF)
  28
  29 /* This used to be "SCM (*)(...)" but GCC on RedHat 7.1 doesn't seem
  30    to like it.
  31  */
  32 #define SCM_FUNC_CAST_ARBITRARY_ARGS SCM (*)()
  33
  34 #else
  35 #define SCM_FUNC_CAST_ARBITRARY_ARGS SCM (*)()
  36 #endif
  37
  38 #if (defined SCM_ALIGNED) && (SCM_DEBUG_TYPING_STRICTNESS <= 1)
  39 /* We support static allocation of some `SCM' objects.  */
  40 # define SCM_SUPPORT_STATIC_ALLOCATION
  41 #endif
  42
  43 /* C preprocessor token concatenation.  */
  44 #define scm_i_paste(x, y)      x ## y
  45 #define scm_i_paste3(a, b, c)  a ## b ## c
  46
  47
  48 \f
  49 /* Generic macros to be used in user macro definitions.
  50  *
  51  * For example, in order to define a macro which creates ints and
  52  * initializes them to the result of foo (), do:
  53  *
  54  *   #define SCM_FOO(NAME) \
  55  *     SCM_SNARF_HERE (int NAME) \
  56  *     SCM_SNARF_INIT (NAME = foo ())
  57  *
  58  * The SCM_SNARF_INIT text goes into the corresponding .x file
  59  * up through the first occurrence of SCM_SNARF_DOC_START on that
  60  * line, if any.
  61  */
  62
  63 #ifdef SCM_MAGIC_SNARF_INITS
  64 # define SCM_SNARF_HERE(X)
  65 # define SCM_SNARF_INIT(X) ^^ X ^:^
  66 # define SCM_SNARF_DOCS(TYPE, CNAME, FNAME, ARGLIST, REQ, OPT, VAR, DOCSTRING)
  67 #else
  68 # ifdef SCM_MAGIC_SNARF_DOCS
  69 #  define SCM_SNARF_HERE(X)
  70 #  define SCM_SNARF_INIT(X)
  71 #  define SCM_SNARF_DOCS(TYPE, CNAME, FNAME, ARGLIST, REQ, OPT, VAR, DOCSTRING) \
  72 ^^ { \
  73 cname CNAME ^^ \
  74 fname FNAME ^^ \
  75 type TYPE ^^ \
  76 location __FILE__ __LINE__ ^^ \
  77 arglist ARGLIST ^^ \
  78 argsig REQ OPT VAR ^^ \
  79 DOCSTRING ^^ }
  80 # else
  81 #  define SCM_SNARF_HERE(X) X
  82 #  define SCM_SNARF_INIT(X)
  83 #  define SCM_SNARF_DOCS(TYPE, CNAME, FNAME, ARGLIST, REQ, OPT, VAR, DOCSTRING)
  84 # endif
  85 #endif
  86
  87 #define SCM_DEFINE_GSUBR(FNAME, PRIMNAME, REQ, OPT, VAR, ARGLIST, DOCSTRING) \
  88 SCM_SNARF_HERE(\
  89 static const char s_ ## FNAME [] = PRIMNAME; \
  90 SCM FNAME ARGLIST\
  91 )\
  92 SCM_SNARF_INIT(\
  93 scm_c_define_gsubr (s_ ## FNAME, REQ, OPT, VAR, \
  94                     (SCM_FUNC_CAST_ARBITRARY_ARGS) FNAME); \
  95 )\
  96 SCM_SNARF_DOCS(primitive, FNAME, PRIMNAME, ARGLIST, REQ, OPT, VAR, DOCSTRING)
  97
  98 #ifdef SCM_SUPPORT_STATIC_ALLOCATION
  99
 100 /* Regular "subrs", i.e., few arguments.  */
 101 #define SCM_DEFINE_SUBR(FNAME, PRIMNAME, REQ, OPT, VAR, ARGLIST, DOCSTRING) \
 102 SCM_SYMBOL (scm_i_paste (FNAME, __name), PRIMNAME);                     \
 103 SCM_SNARF_HERE(                                                         \
 104   static const char scm_i_paste (s_, FNAME) [] = PRIMNAME;              \
 105   SCM_IMMUTABLE_SUBR (scm_i_paste (FNAME, __subr),                      \
 106                       scm_i_paste (FNAME, __name),                      \
 107                       REQ, OPT, VAR, &FNAME);                           \
 108   SCM FNAME ARGLIST                                                     \
 109 )                                                                       \
 110 SCM_SNARF_INIT(                                                         \
 111   /* Initialize the procedure name (an interned symbol).  */            \
 112   scm_i_paste (FNAME, __subr_meta_info)[0] = scm_i_paste (FNAME, __name); \
 113                                                                         \
 114   /* Define the subr.  */                                               \
 115   scm_c_define (scm_i_paste (s_, FNAME), scm_i_paste (FNAME, __subr));  \
 116 )                                                                       \
 117 SCM_SNARF_DOCS(primitive, FNAME, PRIMNAME, ARGLIST, REQ, OPT, VAR, DOCSTRING)
 118
 119 /* XXX: Eventually, we could statically allocate gsubrs as well.  */
 120
 121 /* These are the subrs whose arity makes it possible to define them as "raw
 122    subrs" (as opposed to "gsubrs").  This has to be consistent with
 123    `SCM_SUBR_ARITY_TO_TYPE ()' and `create_gsubr ()'.  */
 124 #define SCM_DEFINE_SUBR_req0_opt0_rst0  SCM_DEFINE_SUBR
 125 #define SCM_DEFINE_SUBR_req1_opt0_rst0  SCM_DEFINE_SUBR
 126 #define SCM_DEFINE_SUBR_req0_opt1_rst0  SCM_DEFINE_SUBR
 127 #define SCM_DEFINE_SUBR_req1_opt1_rst0  SCM_DEFINE_SUBR
 128 #define SCM_DEFINE_SUBR_req2_opt0_rst0  SCM_DEFINE_SUBR
 129 #define SCM_DEFINE_SUBR_req3_opt0_rst0  SCM_DEFINE_SUBR
 130 #define SCM_DEFINE_SUBR_req0_opt0_rst1  SCM_DEFINE_SUBR
 131 #define SCM_DEFINE_SUBR_req2_opt0_rst1  SCM_DEFINE_SUBR
 132
 133 /* For any other combination of required/optional/rest arguments, use
 134    `SCM_DEFINE_GSUBR ().  */
 135 #include "libguile/snarf-gsubr.h"
 136
 137 /* The generic subr definition macro.  This macro dispatches to either
 138    `SCM_DEFINE_SUBR ()' or `SCM_DEFINE_GSUBR ()' depending on the arity of
 139    the subr being defined.  */
 140 #define SCM_DEFINE(FNAME, PRIMNAME, REQ, OPT, VAR, ARGLIST, DOCSTRING)  \
 141   SCM_DEFINE_SUBR_req ## REQ ## _opt ## OPT ## _rst ## VAR              \
 142     (FNAME, PRIMNAME,                                                   \
 143      REQ, OPT, VAR,                                                     \
 144      ARGLIST, DOCSTRING)
 145
 146
 147 #else /* !SCM_SUPPORT_STATIC_ALLOCATION */
 148
 149 /* Always use the generic subr case.  */
 150 #define SCM_DEFINE SCM_DEFINE_GSUBR
 151
 152 #endif /* !SCM_SUPPORT_STATIC_ALLOCATION */
 153
 154
 155 #define SCM_PRIMITIVE_GENERIC(FNAME, PRIMNAME, REQ, OPT, VAR, ARGLIST, DOCSTRING) \
 156 SCM_SNARF_HERE(\
 157 static const char s_ ## FNAME [] = PRIMNAME; \
 158 static SCM g_ ## FNAME; \
 159 SCM FNAME ARGLIST\
 160 )\
 161 SCM_SNARF_INIT(\
 162 g_ ## FNAME = SCM_PACK (0); \
 163 scm_c_define_gsubr_with_generic (s_ ## FNAME, REQ, OPT, VAR, \
 164                                  (SCM_FUNC_CAST_ARBITRARY_ARGS) FNAME, \
 165                                  &g_ ## FNAME); \
 166 )\
 167 SCM_SNARF_DOCS(primitive, FNAME, PRIMNAME, ARGLIST, REQ, OPT, VAR, DOCSTRING)
 168
 169 #define SCM_DEFINE_PUBLIC(FNAME, PRIMNAME, REQ, OPT, VAR, ARGLIST, DOCSTRING) \
 170 SCM_SNARF_HERE(\
 171 static const char s_ ## FNAME [] = PRIMNAME; \
 172 SCM FNAME ARGLIST\
 173 )\
 174 SCM_SNARF_INIT(\
 175 scm_c_define_gsubr (s_ ## FNAME, REQ, OPT, VAR, \
 176                     (SCM_FUNC_CAST_ARBITRARY_ARGS) FNAME); \
 177 scm_c_export (s_ ## FNAME, NULL); \
 178 )\
 179 SCM_SNARF_DOCS(primitive, FNAME, PRIMNAME, ARGLIST, REQ, OPT, VAR, DOCSTRING)
 180
 181 #define SCM_DEFINE1(FNAME, PRIMNAME, TYPE, ARGLIST, DOCSTRING) \
 182 SCM_SNARF_HERE(\
 183 static const char s_ ## FNAME [] = PRIMNAME; \
 184 SCM FNAME ARGLIST\
 185 )\
 186 SCM_SNARF_INIT(scm_c_define_subr (s_ ## FNAME, TYPE, FNAME); ) \
 187 SCM_SNARF_DOCS(1, FNAME, PRIMNAME, ARGLIST, 2, 0, 0, DOCSTRING)
 188
 189 #define SCM_PRIMITIVE_GENERIC_1(FNAME, PRIMNAME, TYPE, ARGLIST, DOCSTRING) \
 190 SCM_SNARF_HERE(\
 191 static const char s_ ## FNAME [] = PRIMNAME; \
 192 static SCM g_ ## FNAME; \
 193 SCM FNAME ARGLIST\
 194 )\
 195 SCM_SNARF_INIT(\
 196 g_ ## FNAME = SCM_PACK (0); \
 197 scm_c_define_subr_with_generic (s_ ## FNAME, TYPE, FNAME, &g_ ## FNAME); \
 198 )\
 199 SCM_SNARF_DOCS(1, FNAME, PRIMNAME, ARGLIST, 2, 0, 0, DOCSTRING)
 200
 201 #define SCM_PROC(RANAME, STR, REQ, OPT, VAR, CFN)  \
 202 SCM_SNARF_HERE(static const char RANAME[]=STR) \
 203 SCM_SNARF_INIT(scm_c_define_gsubr (RANAME, REQ, OPT, VAR, \
 204                                    (SCM_FUNC_CAST_ARBITRARY_ARGS) CFN))
 205
 206 #define SCM_REGISTER_PROC(RANAME, STR, REQ, OPT, VAR, CFN)  \
 207 SCM_SNARF_HERE(static const char RANAME[]=STR) \
 208 SCM_SNARF_INIT(scm_c_define_gsubr (RANAME, REQ, OPT, VAR, \
 209                                    (SCM_FUNC_CAST_ARBITRARY_ARGS) CFN);) \
 210 SCM_SNARF_DOCS(register, CFN, STR, (), REQ, OPT, VAR, \
 211                "implemented by the C function \"" #CFN "\"")
 212
 213 #define SCM_GPROC(RANAME, STR, REQ, OPT, VAR, CFN, GF)  \
 214 SCM_SNARF_HERE(\
 215 static const char RANAME[]=STR;\
 216 static SCM GF \
 217 )SCM_SNARF_INIT(\
 218 GF = SCM_PACK (0);  /* Dirk:FIXME:: Can we safely use #f instead of 0? */ \
 219 scm_c_define_gsubr_with_generic (RANAME, REQ, OPT, VAR, \
 220                                  (SCM_FUNC_CAST_ARBITRARY_ARGS) CFN, &GF) \
 221 )
 222
 223 #define SCM_PROC1(RANAME, STR, TYPE, CFN) \
 224 SCM_SNARF_HERE(static const char RANAME[]=STR) \
 225 SCM_SNARF_INIT(\
 226 scm_c_define_subr (RANAME, TYPE, (SCM_FUNC_CAST_ARBITRARY_ARGS) CFN) \
 227 )
 228
 229
 230 #define SCM_GPROC1(RANAME, STR, TYPE, CFN, GF) \
 231 SCM_SNARF_HERE(\
 232 static const char RANAME[]=STR; \
 233 static SCM GF \
 234 )SCM_SNARF_INIT(\
 235 GF = SCM_PACK (0);  /* Dirk:FIXME:: Can we safely use #f instead of 0? */ \
 236 scm_c_define_subr_with_generic (RANAME, TYPE, \
 237                                 (SCM_FUNC_CAST_ARBITRARY_ARGS) CFN, &GF) \
 238 )
 239
 240 #define SCM_SYNTAX(RANAME, STR, TYPE, CFN)  \
 241 SCM_SNARF_HERE(static const char RANAME[]=STR)\
 242 SCM_SNARF_INIT(scm_make_synt (RANAME, TYPE, CFN))
 243
 244 #ifdef SCM_SUPPORT_STATIC_ALLOCATION
 245
 246 # define SCM_SYMBOL(c_name, scheme_name)                                \
 247 SCM_SNARF_HERE(                                                         \
 248   SCM_IMMUTABLE_STRING (scm_i_paste (c_name, _string), scheme_name);    \
 249   static SCM c_name)                                                    \
 250 SCM_SNARF_INIT(                                                         \
 251   c_name = scm_string_to_symbol (scm_i_paste (c_name, _string))         \
 252 )
 253
 254 # define SCM_GLOBAL_SYMBOL(c_name, scheme_name)                         \
 255 SCM_SNARF_HERE(                                                         \
 256   SCM_IMMUTABLE_STRING (scm_i_paste (c_name, _string), scheme_name);    \
 257   SCM c_name)                                                           \
 258 SCM_SNARF_INIT(                                                         \
 259   c_name = scm_string_to_symbol (scm_i_paste (c_name, _string))         \
 260 )
 261
 262 #else /* !SCM_SUPPORT_STATIC_ALLOCATION */
 263
 264 # define SCM_SYMBOL(c_name, scheme_name)                                \
 265 SCM_SNARF_HERE(static SCM c_name)                                       \
 266 SCM_SNARF_INIT(c_name = scm_permanent_object (scm_from_locale_symbol (scheme_name)))
 267
 268 # define SCM_GLOBAL_SYMBOL(c_name, scheme_name)                         \
 269 SCM_SNARF_HERE(SCM c_name)                                              \
 270 SCM_SNARF_INIT(c_name = scm_permanent_object (scm_from_locale_symbol (scheme_name)))
 271
 272 #endif /* !SCM_SUPPORT_STATIC_ALLOCATION */
 273
 274 #define SCM_KEYWORD(c_name, scheme_name) \
 275 SCM_SNARF_HERE(static SCM c_name) \
 276 SCM_SNARF_INIT(c_name = scm_permanent_object (scm_from_locale_keyword (scheme_name)))
 277
 278 #define SCM_GLOBAL_KEYWORD(c_name, scheme_name) \
 279 SCM_SNARF_HERE(SCM c_name) \
 280 SCM_SNARF_INIT(c_name = scm_permanent_object (scm_from_locale_keyword (scheme_name)))
 281
 282 #define SCM_VARIABLE(c_name, scheme_name) \
 283 SCM_SNARF_HERE(static SCM c_name) \
 284 SCM_SNARF_INIT(c_name = scm_permanent_object (scm_c_define (scheme_name, SCM_BOOL_F));)
 285
 286 #define SCM_GLOBAL_VARIABLE(c_name, scheme_name) \
 287 SCM_SNARF_HERE(SCM c_name) \
 288 SCM_SNARF_INIT(c_name = scm_permanent_object (scm_c_define (scheme_name, SCM_BOOL_F));)
 289
 290 #define SCM_VARIABLE_INIT(c_name, scheme_name, init_val) \
 291 SCM_SNARF_HERE(static SCM c_name) \
 292 SCM_SNARF_INIT(c_name = scm_permanent_object (scm_c_define (scheme_name, init_val));)
 293
 294 #define SCM_GLOBAL_VARIABLE_INIT(c_name, scheme_name, init_val) \
 295 SCM_SNARF_HERE(SCM c_name) \
 296 SCM_SNARF_INIT(c_name = scm_permanent_object (scm_c_define (scheme_name, init_val));)
 297
 298 #define SCM_MUTEX(c_name) \
 299 SCM_SNARF_HERE(static scm_t_mutex c_name) \
 300 SCM_SNARF_INIT(scm_i_plugin_mutex_init (&c_name, &scm_i_plugin_mutex))
 301
 302 #define SCM_GLOBAL_MUTEX(c_name) \
 303 SCM_SNARF_HERE(scm_t_mutex c_name) \
 304 SCM_SNARF_INIT(scm_i_plugin_mutex_init (&c_name, &scm_i_plugin_mutex))
 305
 306 #define SCM_REC_MUTEX(c_name) \
 307 SCM_SNARF_HERE(static scm_t_rec_mutex c_name) \
 308 SCM_SNARF_INIT(scm_i_plugin_rec_mutex_init (&c_name, &scm_i_plugin_rec_mutex))
 309
 310 #define SCM_GLOBAL_REC_MUTEX(c_name) \
 311 SCM_SNARF_HERE(scm_t_rec_mutex c_name) \
 312 SCM_SNARF_INIT(scm_i_plugin_rec_mutex_init (&c_name, &scm_i_plugin_rec_mutex))
 313
 314 #define SCM_SMOB(tag, scheme_name, size) \
 315 SCM_SNARF_HERE(static scm_t_bits tag) \
 316 SCM_SNARF_INIT((tag)=scm_make_smob_type((scheme_name), (size));)
 317
 318 #define SCM_GLOBAL_SMOB(tag, scheme_name, size) \
 319 SCM_SNARF_HERE(scm_t_bits tag) \
 320 SCM_SNARF_INIT((tag)=scm_make_smob_type((scheme_name), (size));)
 321
 322 #define SCM_SMOB_MARK(tag, c_name, arg) \
 323 SCM_SNARF_HERE(static SCM c_name(SCM arg)) \
 324 SCM_SNARF_INIT(scm_set_smob_mark((tag), (c_name));)
 325
 326 #define SCM_GLOBAL_SMOB_MARK(tag, c_name, arg) \
 327 SCM_SNARF_HERE(SCM c_name(SCM arg)) \
 328 SCM_SNARF_INIT(scm_set_smob_mark((tag), (c_name));)
 329
 330 #define SCM_SMOB_FREE(tag, c_name, arg) \
 331 SCM_SNARF_HERE(static size_t c_name(SCM arg)) \
 332 SCM_SNARF_INIT(scm_set_smob_free((tag), (c_name));)
 333
 334 #define SCM_GLOBAL_SMOB_FREE(tag, c_name, arg) \
 335 SCM_SNARF_HERE(size_t c_name(SCM arg)) \
 336 SCM_SNARF_INIT(scm_set_smob_free((tag), (c_name));)
 337
 338 #define SCM_SMOB_PRINT(tag, c_name, obj, port, pstate) \
 339 SCM_SNARF_HERE(static int c_name(SCM obj, SCM port, scm_print_state* pstate)) \
 340 SCM_SNARF_INIT(scm_set_smob_print((tag), (c_name));)
 341
 342 #define SCM_GLOBAL_SMOB_PRINT(tag, c_name, obj, port, pstate) \
 343 SCM_SNARF_HERE(int c_name(SCM obj, SCM port, scm_print_state* pstate)) \
 344 SCM_SNARF_INIT(scm_set_smob_print((tag), (c_name));)
 345
 346 #define SCM_SMOB_EQUALP(tag, c_name, obj1, obj2) \
 347 SCM_SNARF_HERE(static SCM c_name(SCM obj1, SCM obj2)) \
 348 SCM_SNARF_INIT(scm_set_smob_equalp((tag), (c_name));)
 349
 350 #define SCM_GLOBAL_SMOB_EQUALP(tag, c_name, obj1, obj2) \
 351 SCM_SNARF_HERE(SCM c_name(SCM obj1, SCM obj2)) \
 352 SCM_SNARF_INIT(scm_set_smob_equalp((tag), (c_name));)
 353
 354 #define SCM_SMOB_APPLY(tag, c_name, req, opt, rest, arglist) \
 355 SCM_SNARF_HERE(static SCM c_name arglist) \
 356 SCM_SNARF_INIT(scm_set_smob_apply((tag), (c_name), (req), (opt), (rest));)
 357
 358 #define SCM_GLOBAL_SMOB_APPLY(tag, c_name, req, opt, rest, arglist) \
 359 SCM_SNARF_HERE(SCM c_name arglist) \
 360 SCM_SNARF_INIT(scm_set_smob_apply((tag), (c_name), (req), (opt), (rest));)
 361
 362 \f
 363 /* Low-level snarfing for static memory allocation.  */
 364
 365 #ifdef SCM_SUPPORT_STATIC_ALLOCATION
 366
 367 #define SCM_IMMUTABLE_DOUBLE_CELL(c_name, car, cbr, ccr, cdr)           \
 368   static SCM_ALIGNED (8) SCM_UNUSED const scm_t_cell                    \
 369   c_name ## _raw_cell [2] =                                             \
 370     {                                                                   \
 371       { SCM_PACK (car), SCM_PACK (cbr) },                               \
 372       { SCM_PACK (ccr), SCM_PACK (cdr) }                                \
 373     };                                                                  \
 374   static SCM_UNUSED const SCM c_name = SCM_PACK (& c_name ## _raw_cell)
 375
 376 #define SCM_IMMUTABLE_STRINGBUF(c_name, contents)                       \
 377   SCM_IMMUTABLE_DOUBLE_CELL (c_name,                                    \
 378                              scm_tc7_stringbuf | SCM_I_STRINGBUF_F_SHARED, \
 379                              (scm_t_bits) (contents),                   \
 380                              (scm_t_bits) sizeof (contents) - 1,        \
 381                              (scm_t_bits) 0)
 382
 383 #define SCM_IMMUTABLE_STRING(c_name, contents)                          \
 384   SCM_IMMUTABLE_STRINGBUF (scm_i_paste (c_name, _stringbuf), contents); \
 385   SCM_IMMUTABLE_DOUBLE_CELL (c_name,                                    \
 386                              scm_tc7_ro_string,                         \
 387                              (scm_t_bits) &scm_i_paste (c_name,         \
 388                                                         _stringbuf_raw_cell), \
 389                              (scm_t_bits) 0,                            \
 390                              (scm_t_bits) sizeof (contents) - 1)
 391
 392 #define SCM_IMMUTABLE_SUBR(c_name, name, req, opt, rest, fcn)           \
 393   static SCM_UNUSED SCM scm_i_paste (c_name, _meta_info)[2] =           \
 394     {                                                                   \
 395       SCM_BOOL_F,  /* The name, initialized at run-time.  */            \
 396       SCM_EOL      /* The procedure properties.  */                     \
 397     };                                                                  \
 398   SCM_IMMUTABLE_DOUBLE_CELL (c_name,                                    \
 399                              SCM_SUBR_ARITY_TO_TYPE (req, opt, rest),   \
 400                              (scm_t_bits) fcn,                          \
 401                              (scm_t_bits) 0 /* no generic */,           \
 402                              (scm_t_bits) & scm_i_paste (c_name, _meta_info));
 403
 404 #endif /* SCM_SUPPORT_STATIC_ALLOCATION */
 405
 406 \f
 407 /* Documentation.  */
 408
 409 #ifdef SCM_MAGIC_SNARF_DOCS
 410 #undef SCM_ASSERT
 411 #define SCM_ASSERT(_cond, _arg, _pos, _subr) ^^ argpos _arg _pos __LINE__ ^^
 412 #endif /* SCM_MAGIC_SNARF_DOCS */
 413
 414 #endif  /* SCM_SNARF_H */
 415
 416 /*
 417   Local Variables:
 418   c-file-style: "gnu"
 419   End:
 420 */