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#ifndef RBIMPL_RHASH_H /*-*-C++-*-vi:se ft=cpp:*/
#define RBIMPL_RHASH_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 Routines to manipulate struct ::RHash.
*
* Shyouhei really suffered agnish over placement of macros in this file. They
* are half-brken. The situation (as of wriring) is:
*
* - #RHASH_TBL: works.
* - #RHASH_ITER_LEV: compile-time error.
* - #RHASH_IFNONE: compile-time error.
* - #RHASH_SIZE: works.
* - #RHASH_EMPTY_P: works.
* - #RHASH_SET_IFNONE: works (why... given you cannot query).
*
* Shyouhei stopped thinking. Let them be as is.
*/
#include "ruby/internal/config.h"
#ifdef STDC_HEADERS
# include <stddef.h>
#endif
#include "ruby/internal/dllexport.h"
#include "ruby/internal/value.h"
#if !defined RUBY_EXPORT && !defined RUBY_NO_OLD_COMPATIBILITY
# include "ruby/backward.h"
#endif
#define RHASH_TBL(h) rb_hash_tbl(h, __FILE__, __LINE__)
#define RHASH_ITER_LEV(h) rb_hash_iter_lev(h)
#define RHASH_IFNONE(h) rb_hash_ifnone(h)
#define RHASH_SIZE(h) rb_hash_size_num(h)
#define RHASH_EMPTY_P(h) (RHASH_SIZE(h) == 0)
#define RHASH_SET_IFNONE(h, ifnone) rb_hash_set_ifnone((VALUE)h, ifnone)
struct st_table; /* in ruby/st.h */
RBIMPL_SYMBOL_EXPORT_BEGIN()
size_t rb_hash_size_num(VALUE hash);
struct st_table *rb_hash_tbl(VALUE, const char *file, int line);
VALUE rb_hash_set_ifnone(VALUE hash, VALUE ifnone);
RBIMPL_SYMBOL_EXPORT_END()
#endif /* RBIMPL_RHASH_H */