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/* classes: h_files */
#ifndef SCM_SNARF_H
#define SCM_SNARF_H
/* Copyright (C) 1995-2004, 2006, 2009-2011, 2013, 2014, 2017, 2018
* 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
*/
/* Macros for snarfing initialization actions from C source. */
/* Casting to a function that can take any number of arguments. */
#define SCM_FUNC_CAST_ARBITRARY_ARGS scm_t_subr
#ifdef SCM_ALIGNED
/* We support static allocation of some `SCM' objects. */
# define SCM_SUPPORT_STATIC_ALLOCATION
#endif
/* C preprocessor token concatenation. */
#define scm_i_paste(x, y) x ## y
#define scm_i_paste3(a, b, c) a ## b ## c
/* Generic macros to be used in user macro definitions.
*
* For example, in order to define a macro which creates ints and
* initializes them to the result of foo (), do:
*
* #define SCM_FOO(NAME) \
* SCM_SNARF_HERE (int NAME) \
* SCM_SNARF_INIT (NAME = foo ())
*
* The SCM_SNARF_INIT text goes into the corresponding .x file
* up through the first occurrence of SCM_SNARF_DOC_START on that
* line, if any.
*
* Some debugging options can cause the preprocessor to echo #define
* directives to its output. Keeping the snarfing markers on separate
* lines prevents guile-snarf from inadvertently snarfing the definition
* of SCM_SNARF_INIT if those options are in effect.
*/
#ifdef SCM_MAGIC_SNARF_INITS
# define SCM_SNARF_HERE(X)
# define SCM_SNARF_INIT_PREFIX ^^
# define SCM_SNARF_INIT(X) SCM_SNARF_INIT_PREFIX X ^:^
# define SCM_SNARF_DOCS(TYPE, CNAME, FNAME, ARGLIST, REQ, OPT, VAR, DOCSTRING)
#else
# ifdef SCM_MAGIC_SNARF_DOCS
# define SCM_SNARF_HERE(X)
# define SCM_SNARF_INIT(X)
# define SCM_SNARF_DOCS(TYPE, CNAME, FNAME, ARGLIST, REQ, OPT, VAR, DOCSTRING) \
^^ { \
cname CNAME ^^ \
fname FNAME ^^ \
type TYPE ^^ \
location __FILE__ __LINE__ ^^ \
arglist ARGLIST ^^ \
argsig REQ OPT VAR ^^ \
DOCSTRING ^^ }
# else
# define SCM_SNARF_HERE(X) X
# define SCM_SNARF_INIT(X)
# define SCM_SNARF_DOCS(TYPE, CNAME, FNAME, ARGLIST, REQ, OPT, VAR, DOCSTRING)
# endif
#endif
#define SCM_DEFINE_GSUBR(FNAME, PRIMNAME, REQ, OPT, VAR, ARGLIST, DOCSTRING) \
SCM_SNARF_HERE(\
SCM_UNUSED static const char s_ ## FNAME [] = PRIMNAME; \
SCM FNAME ARGLIST\
)\
SCM_SNARF_INIT(\
scm_c_define_gsubr (s_ ## FNAME, REQ, OPT, VAR, \
(SCM_FUNC_CAST_ARBITRARY_ARGS) FNAME); \
)\
SCM_SNARF_DOCS(primitive, FNAME, PRIMNAME, ARGLIST, REQ, OPT, VAR, DOCSTRING)
/* Always use the generic subr case. */
#define SCM_DEFINE SCM_DEFINE_GSUBR
#define SCM_PRIMITIVE_GENERIC(FNAME, PRIMNAME, REQ, OPT, VAR, ARGLIST, DOCSTRING) \
SCM_SNARF_HERE(\
SCM_UNUSED static const char s_ ## FNAME [] = PRIMNAME; \
static SCM g_ ## FNAME; \
SCM FNAME ARGLIST\
)\
SCM_SNARF_INIT(\
g_ ## FNAME = SCM_PACK (0); \
scm_c_define_gsubr_with_generic (s_ ## FNAME, REQ, OPT, VAR, \
(SCM_FUNC_CAST_ARBITRARY_ARGS) FNAME, \
&g_ ## FNAME); \
)\
SCM_SNARF_DOCS(primitive, FNAME, PRIMNAME, ARGLIST, REQ, OPT, VAR, DOCSTRING)
#define SCM_DEFINE_PUBLIC(FNAME, PRIMNAME, REQ, OPT, VAR, ARGLIST, DOCSTRING) \
SCM_SNARF_HERE(\
SCM_UNUSED static const char s_ ## FNAME [] = PRIMNAME; \
SCM FNAME ARGLIST\
)\
SCM_SNARF_INIT(\
scm_c_define_gsubr (s_ ## FNAME, REQ, OPT, VAR, \
(SCM_FUNC_CAST_ARBITRARY_ARGS) FNAME); \
scm_c_export (s_ ## FNAME, NULL); \
)\
SCM_SNARF_DOCS(primitive, FNAME, PRIMNAME, ARGLIST, REQ, OPT, VAR, DOCSTRING)
#define SCM_PROC(RANAME, STR, REQ, OPT, VAR, CFN) \
SCM_SNARF_HERE(SCM_UNUSED static const char RANAME[]=STR) \
SCM_SNARF_INIT(scm_c_define_gsubr (RANAME, REQ, OPT, VAR, \
(SCM_FUNC_CAST_ARBITRARY_ARGS) CFN))
#define SCM_REGISTER_PROC(RANAME, STR, REQ, OPT, VAR, CFN) \
SCM_SNARF_HERE(SCM_UNUSED static const char RANAME[]=STR) \
SCM_SNARF_INIT(scm_c_define_gsubr (RANAME, REQ, OPT, VAR, \
(SCM_FUNC_CAST_ARBITRARY_ARGS) CFN);) \
SCM_SNARF_DOCS(register, CFN, STR, (), REQ, OPT, VAR, \
"implemented by the C function \"" #CFN "\"")
#define SCM_GPROC(RANAME, STR, REQ, OPT, VAR, CFN, GF) \
SCM_SNARF_HERE(\
SCM_UNUSED static const char RANAME[]=STR;\
static SCM GF \
)SCM_SNARF_INIT(\
GF = SCM_PACK (0); /* Dirk:FIXME:: Can we safely use #f instead of 0? */ \
scm_c_define_gsubr_with_generic (RANAME, REQ, OPT, VAR, \
(SCM_FUNC_CAST_ARBITRARY_ARGS) CFN, &GF) \
)
#ifdef SCM_SUPPORT_STATIC_ALLOCATION
# define SCM_SYMBOL(c_name, scheme_name) \
SCM_SNARF_HERE( \
SCM_IMMUTABLE_STRING (scm_i_paste (c_name, _string), scheme_name); \
static SCM c_name) \
SCM_SNARF_INIT( \
c_name = scm_string_to_symbol (scm_i_paste (c_name, _string)) \
)
# define SCM_GLOBAL_SYMBOL(c_name, scheme_name) \
SCM_SNARF_HERE( \
SCM_IMMUTABLE_STRING (scm_i_paste (c_name, _string), scheme_name); \
SCM c_name) \
SCM_SNARF_INIT( \
c_name = scm_string_to_symbol (scm_i_paste (c_name, _string)) \
)
#else /* !SCM_SUPPORT_STATIC_ALLOCATION */
# define SCM_SYMBOL(c_name, scheme_name) \
SCM_SNARF_HERE(static SCM c_name) \
SCM_SNARF_INIT(c_name = scm_from_utf8_symbol (scheme_name))
# define SCM_GLOBAL_SYMBOL(c_name, scheme_name) \
SCM_SNARF_HERE(SCM c_name) \
SCM_SNARF_INIT(c_name = scm_from_utf8_symbol (scheme_name))
#endif /* !SCM_SUPPORT_STATIC_ALLOCATION */
#define SCM_KEYWORD(c_name, scheme_name) \
SCM_SNARF_HERE(static SCM c_name) \
SCM_SNARF_INIT(c_name = scm_from_utf8_keyword (scheme_name))
#define SCM_GLOBAL_KEYWORD(c_name, scheme_name) \
SCM_SNARF_HERE(SCM c_name) \
SCM_SNARF_INIT(c_name = scm_from_utf8_keyword (scheme_name))
#define SCM_VARIABLE(c_name, scheme_name) \
SCM_SNARF_HERE(static SCM c_name) \
SCM_SNARF_INIT(c_name = scm_c_define (scheme_name, SCM_BOOL_F);)
#define SCM_GLOBAL_VARIABLE(c_name, scheme_name) \
SCM_SNARF_HERE(SCM c_name) \
SCM_SNARF_INIT(c_name = scm_c_define (scheme_name, SCM_BOOL_F);)
#define SCM_VARIABLE_INIT(c_name, scheme_name, init_val) \
SCM_SNARF_HERE(static SCM c_name) \
SCM_SNARF_INIT(c_name = scm_c_define (scheme_name, init_val);)
#define SCM_GLOBAL_VARIABLE_INIT(c_name, scheme_name, init_val) \
SCM_SNARF_HERE(SCM c_name) \
SCM_SNARF_INIT(c_name = scm_c_define (scheme_name, init_val);)
#define SCM_MUTEX(c_name) \
SCM_SNARF_HERE(static scm_t_mutex c_name) \
SCM_SNARF_INIT(scm_i_plugin_mutex_init (&c_name, &scm_i_plugin_mutex))
#define SCM_GLOBAL_MUTEX(c_name) \
SCM_SNARF_HERE(scm_t_mutex c_name) \
SCM_SNARF_INIT(scm_i_plugin_mutex_init (&c_name, &scm_i_plugin_mutex))
#define SCM_REC_MUTEX(c_name) \
SCM_SNARF_HERE(static scm_t_rec_mutex c_name) \
SCM_SNARF_INIT(scm_i_plugin_rec_mutex_init (&c_name, &scm_i_plugin_rec_mutex))
#define SCM_GLOBAL_REC_MUTEX(c_name) \
SCM_SNARF_HERE(scm_t_rec_mutex c_name) \
SCM_SNARF_INIT(scm_i_plugin_rec_mutex_init (&c_name, &scm_i_plugin_rec_mutex))
#define SCM_SMOB(tag, scheme_name, size) \
SCM_SNARF_HERE(static scm_t_bits tag) \
SCM_SNARF_INIT((tag)=scm_make_smob_type((scheme_name), (size));)
#define SCM_GLOBAL_SMOB(tag, scheme_name, size) \
SCM_SNARF_HERE(scm_t_bits tag) \
SCM_SNARF_INIT((tag)=scm_make_smob_type((scheme_name), (size));)
#define SCM_SMOB_MARK(tag, c_name, arg) \
SCM_SNARF_HERE(static SCM c_name(SCM arg)) \
SCM_SNARF_INIT(scm_set_smob_mark((tag), (c_name));)
#define SCM_GLOBAL_SMOB_MARK(tag, c_name, arg) \
SCM_SNARF_HERE(SCM c_name(SCM arg)) \
SCM_SNARF_INIT(scm_set_smob_mark((tag), (c_name));)
#define SCM_SMOB_FREE(tag, c_name, arg) \
SCM_SNARF_HERE(static size_t c_name(SCM arg)) \
SCM_SNARF_INIT(scm_set_smob_free((tag), (c_name));)
#define SCM_GLOBAL_SMOB_FREE(tag, c_name, arg) \
SCM_SNARF_HERE(size_t c_name(SCM arg)) \
SCM_SNARF_INIT(scm_set_smob_free((tag), (c_name));)
#define SCM_SMOB_PRINT(tag, c_name, obj, port, pstate) \
SCM_SNARF_HERE(static int c_name(SCM obj, SCM port, scm_print_state* pstate)) \
SCM_SNARF_INIT(scm_set_smob_print((tag), (c_name));)
#define SCM_GLOBAL_SMOB_PRINT(tag, c_name, obj, port, pstate) \
SCM_SNARF_HERE(int c_name(SCM obj, SCM port, scm_print_state* pstate)) \
SCM_SNARF_INIT(scm_set_smob_print((tag), (c_name));)
#define SCM_SMOB_EQUALP(tag, c_name, obj1, obj2) \
SCM_SNARF_HERE(static SCM c_name(SCM obj1, SCM obj2)) \
SCM_SNARF_INIT(scm_set_smob_equalp((tag), (c_name));)
#define SCM_GLOBAL_SMOB_EQUALP(tag, c_name, obj1, obj2) \
SCM_SNARF_HERE(SCM c_name(SCM obj1, SCM obj2)) \
SCM_SNARF_INIT(scm_set_smob_equalp((tag), (c_name));)
#define SCM_SMOB_APPLY(tag, c_name, req, opt, rest, arglist) \
SCM_SNARF_HERE(static SCM c_name arglist) \
SCM_SNARF_INIT(scm_set_smob_apply((tag), (c_name), (req), (opt), (rest));)
#define SCM_GLOBAL_SMOB_APPLY(tag, c_name, req, opt, rest, arglist) \
SCM_SNARF_HERE(SCM c_name arglist) \
SCM_SNARF_INIT(scm_set_smob_apply((tag), (c_name), (req), (opt), (rest));)
/* Low-level snarfing for static memory allocation. */
#ifdef SCM_SUPPORT_STATIC_ALLOCATION
#define SCM_IMMUTABLE_CELL(c_name, car, cdr) \
static SCM_ALIGNED (8) SCM_UNUSED const scm_t_cell \
c_name ## _raw_scell = \
{ \
SCM_PACK (car), \
SCM_PACK (cdr) \
}; \
static SCM_UNUSED const SCM c_name = SCM_PACK (& c_name ## _raw_scell)
#define SCM_IMMUTABLE_DOUBLE_CELL(c_name, car, cbr, ccr, cdr) \
static SCM_ALIGNED (8) SCM_UNUSED const scm_t_cell \
c_name ## _raw_cell [2] = \
{ \
{ SCM_PACK (car), SCM_PACK (cbr) }, \
{ SCM_PACK (ccr), SCM_PACK (cdr) } \
}; \
static SCM_UNUSED const SCM c_name = SCM_PACK (& c_name ## _raw_cell)
#define SCM_STATIC_DOUBLE_CELL(c_name, car, cbr, ccr, cdr) \
static SCM_ALIGNED (8) SCM_UNUSED scm_t_cell \
c_name ## _raw_cell [2] = \
{ \
{ SCM_PACK (car), SCM_PACK (cbr) }, \
{ SCM_PACK (ccr), SCM_PACK (cdr) } \
}; \
static SCM_UNUSED SCM c_name = SCM_PACK (& c_name ## _raw_cell)
#define SCM_IMMUTABLE_STRINGBUF(c_name, contents) \
static SCM_UNUSED const \
struct \
{ \
scm_t_bits word_0; \
scm_t_bits word_1; \
const char buffer[sizeof (contents)]; \
} \
c_name = \
{ \
scm_tc7_stringbuf, \
sizeof (contents) - 1, \
contents \
}
#define SCM_IMMUTABLE_STRING(c_name, contents) \
SCM_IMMUTABLE_STRINGBUF (scm_i_paste (c_name, _stringbuf), contents); \
SCM_IMMUTABLE_DOUBLE_CELL (c_name, \
scm_tc7_ro_string, \
(scm_t_bits) &scm_i_paste (c_name, \
_stringbuf), \
(scm_t_bits) 0, \
(scm_t_bits) (sizeof (contents) - 1))
#define SCM_IMMUTABLE_POINTER(c_name, ptr) \
SCM_IMMUTABLE_CELL (c_name, scm_tc7_pointer, ptr)
#endif /* SCM_SUPPORT_STATIC_ALLOCATION */
/* Documentation. */
#ifdef SCM_MAGIC_SNARF_DOCS
#undef SCM_ASSERT
#define SCM_ASSERT(_cond, _arg, _pos, _subr) ^^ argpos _arg _pos __LINE__ ^^
#endif /* SCM_MAGIC_SNARF_DOCS */
#endif /* SCM_SNARF_H */
/*
Local Variables:
c-file-style: "gnu"
End:
*/
|
