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#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 */
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