#ifndef RBIMPL_SYMBOL_H /*-*-C++-*-vi:se ft=cpp:*/
#define RBIMPL_SYMBOL_H
/**
* @file
* @author Ruby developers <ruby-core@ruby-lang.org>
* @copyright This file is a part of the programming language Ruby.
* Permission is hereby granted, to either redistribute and/or
* modify this file, provided that the conditions mentioned in the
* file COPYING are met. Consult the file for details.
* @warning Symbols prefixed with either `RBIMPL` or `rbimpl` are
* implementation details. Don't take them as canon. They could
* rapidly appear then vanish. The name (path) of this header file
* is also an implementation detail. Do not expect it to persist
* at the place it is now. Developers are free to move it anywhere
* anytime at will.
* @note To ruby-core: remember that this header can be possibly
* recursively included from extension libraries written in C++.
* Do not expect for instance `__VA_ARGS__` is always available.
* We assume C99 for ruby itself but we don't assume languages of
* extension libraries. They could be written in C++98.
* @brief Defines #rb_intern
*/
#include "ruby/internal/config.h"
#ifdef HAVE_STDDEF_H
# include <stddef.h>
#endif
#ifdef HAVE_STRING_H
# include <string.h>
#endif
#include "ruby/internal/attr/nonnull.h"
#include "ruby/internal/attr/pure.h"
#include "ruby/internal/attr/noalias.h"
#include "ruby/internal/cast.h"
#include "ruby/internal/constant_p.h"
#include "ruby/internal/dllexport.h"
#include "ruby/internal/has/builtin.h"
#include "ruby/internal/value.h"
#define RB_ID2SYM rb_id2sym
#define RB_SYM2ID rb_sym2id
#define ID2SYM RB_ID2SYM
#define SYM2ID RB_SYM2ID
#define CONST_ID_CACHE RUBY_CONST_ID_CACHE
#define CONST_ID RUBY_CONST_ID
/** @cond INTERNAL_MACRO */
#define rb_intern_const rb_intern_const
/** @endcond */
RBIMPL_SYMBOL_EXPORT_BEGIN()
ID rb_sym2id(VALUE);
VALUE rb_id2sym(ID);
ID rb_intern(const char*);
ID rb_intern2(const char*, long);
ID rb_intern_str(VALUE str);
const char *rb_id2name(ID);
ID rb_check_id(volatile VALUE *);
ID rb_to_id(VALUE);
VALUE rb_id2str(ID);
VALUE rb_sym2str(VALUE);
VALUE rb_to_symbol(VALUE name);
VALUE rb_check_symbol(volatile VALUE *namep);
RBIMPL_SYMBOL_EXPORT_END()
RBIMPL_ATTR_PURE()
RBIMPL_ATTR_NONNULL(())
static inline ID
rb_intern_const(const char *str)
{
size_t len = strlen(str);
return rb_intern2(str, RBIMPL_CAST((long)len));
}
RBIMPL_ATTR_NOALIAS()
RBIMPL_ATTR_NONNULL(())
static inline ID
rbimpl_intern_const(ID *ptr, const char *str)
{
while (! *ptr) {
*ptr = rb_intern_const(str);
}
return *ptr;
}
/* Does anyone use it? Preserved for backward compat. */
#define RUBY_CONST_ID_CACHE(result, str) \
{ \
static ID rb_intern_id_cache; \
rbimpl_intern_const(&rb_intern_id_cache, (str)); \
result rb_intern_id_cache; \
}
#define RUBY_CONST_ID(var, str) \
do { \
static ID rbimpl_id; \
(var) = rbimpl_intern_const(&rbimpl_id, (str)); \
} while (0)
#if defined(HAVE_STMT_AND_DECL_IN_EXPR)
/* __builtin_constant_p and statement expression is available
* since gcc-2.7.2.3 at least. */
#define rb_intern(str) \
(RBIMPL_CONSTANT_P(str) ? \
__extension__ ({ \
static ID rbimpl_id; \
rbimpl_intern_const(&rbimpl_id, (str)); \
}) : \
(rb_intern)(str))
#endif
#endif /* RBIMPL_SYMBOL_H */
|