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rarray.h
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rbasic.h
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rbignum.h
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rclass.h
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rdata.h
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rfile.h
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rhash.h
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rmatch.h
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robject.h
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rstring.h
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rstruct.h
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rtypeddata.h
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Editing: rhash.h
#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. * @note The struct RHash itself is opaque. */ #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 /** * Retrieves the internal table. * * @param[in] h An instance of RHash. * @pre `h` must be of ::RUBY_T_HASH. * @return A struct st_table which has the contents of this hash. * @note Nowadays as Ruby evolved over ages, RHash has multiple backend * storage engines. `h`'s backend is not guaranteed to be a * st_table. This function creates one when necessary. */ #define RHASH_TBL(h) rb_hash_tbl(h, __FILE__, __LINE__) /** * @private * * @deprecated This macro once was a thing in the old days, but makes no sense * any longer today. Exists here for backwards compatibility * only. You can safely forget about it. * * @internal * * Declaration of rb_hash_ifnone() is at include/ruby/backward.h. */ #define RHASH_IFNONE(h) rb_hash_ifnone(h) /** * Queries the size of the hash. Size here means the number of keys that the * hash stores. * * @param[in] h An instance of RHash. * @pre `h` must be of ::RUBY_T_HASH. * @return The size of the hash. */ #define RHASH_SIZE(h) rb_hash_size_num(h) /** * Checks if the hash is empty. * * @param[in] h An instance of RHash. * @pre `h` must be of ::RUBY_T_HASH. * @retval true It is. * @retval false It isn't. */ #define RHASH_EMPTY_P(h) (RHASH_SIZE(h) == 0) /** * Destructively updates the default value of the hash. * * @param[out] h An instance of RHash. * @param[in] ifnone Arbitrary default value. * @pre `h` must be of ::RUBY_T_HASH. * * @internal * * But why you can set this, given rb_hash_ifnone() doesn't exist? */ #define RHASH_SET_IFNONE(h, ifnone) rb_hash_set_ifnone((VALUE)h, ifnone) struct st_table; /* in ruby/st.h */ RBIMPL_SYMBOL_EXPORT_BEGIN() /** * This is the implementation detail of #RHASH_SIZE. People don't call this * directly. * * @param[in] hash An instance of RHash. * @pre `hash` must be of ::RUBY_T_HASH. * @return The size of the hash. */ size_t rb_hash_size_num(VALUE hash); /** * This is the implementation detail of #RHASH_TBL. People don't call this * directly. * * @param[in] hash An instance of RHash. * @param[in] file The `__FILE__`. * @param[in] line The `__LINE__`. * @pre `hash` must be of ::RUBY_T_HASH. * @return Table that has the contents of the hash. */ struct st_table *rb_hash_tbl(VALUE hash, const char *file, int line); /** * This is the implementation detail of #RHASH_SET_IFNONE. People don't call * this directly. * * @param[out] hash An instance of RHash. * @param[in] ifnone Arbitrary default value. * @pre `hash` must be of ::RUBY_T_HASH. */ VALUE rb_hash_set_ifnone(VALUE hash, VALUE ifnone); RBIMPL_SYMBOL_EXPORT_END() #endif /* RBIMPL_RHASH_H */
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