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121 lines
4.1 KiB
C++
121 lines
4.1 KiB
C++
#ifndef RBIMPL_RSTRUCT_H /*-*-C++-*-vi:se ft=cpp:*/
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#define RBIMPL_RSTRUCT_H
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/**
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* @file
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* @author Ruby developers <ruby-core@ruby-lang.org>
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* @copyright This file is a part of the programming language Ruby.
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* Permission is hereby granted, to either redistribute and/or
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* modify this file, provided that the conditions mentioned in the
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* file COPYING are met. Consult the file for details.
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* @warning Symbols prefixed with either `RBIMPL` or `rbimpl` are
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* implementation details. Don't take them as canon. They could
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* rapidly appear then vanish. The name (path) of this header file
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* is also an implementation detail. Do not expect it to persist
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* at the place it is now. Developers are free to move it anywhere
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* anytime at will.
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* @note To ruby-core: remember that this header can be possibly
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* recursively included from extension libraries written in C++.
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* Do not expect for instance `__VA_ARGS__` is always available.
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* We assume C99 for ruby itself but we don't assume languages of
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* extension libraries. They could be written in C++98.
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* @brief Routines to manipulate struct RStruct.
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* @note The struct RStruct itself is opaque.
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*/
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#include "ruby/internal/attr/artificial.h"
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#include "ruby/internal/dllexport.h"
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#include "ruby/internal/value.h"
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#include "ruby/internal/value_type.h"
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#include "ruby/internal/arithmetic/long.h"
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#include "ruby/internal/arithmetic/int.h"
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#if !defined RUBY_EXPORT && !defined RUBY_NO_OLD_COMPATIBILITY
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# include "ruby/backward.h"
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#endif
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/**
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* @private
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*
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* @deprecated This macro once was a thing in the old days, but makes no sense
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* any longer today. Exists here for backwards compatibility
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* only. You can safely forget about it.
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*
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* @internal
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*
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* Declaration of rb_struct_ptr() is at include/ruby/backward.h.
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*/
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#define RSTRUCT_PTR(st) rb_struct_ptr(st)
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/** @cond INTERNAL_MACRO */
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#define RSTRUCT_LEN RSTRUCT_LEN
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#define RSTRUCT_SET RSTRUCT_SET
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#define RSTRUCT_GET RSTRUCT_GET
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/** @endcond */
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RBIMPL_SYMBOL_EXPORT_BEGIN()
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/**
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* Returns the number of struct members.
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*
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* @param[in] st An instance of RStruct.
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* @return The number of members of `st`.
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* @pre `st` must be of ::RUBY_T_STRUCT.
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*/
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VALUE rb_struct_size(VALUE st);
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/**
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* Resembles `Struct#[]`.
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*
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* @param[in] st An instance of RStruct.
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* @param[in] k Index a.k.a. key of the struct.
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* @exception rb_eTypeError `k` is neither Numeric, Symbol, nor String.
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* @exception rb_eIndexError Numerical index out of range.
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* @exception rb_eNameError No such key.
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* @return The member stored at `k` in `st`.
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* @pre `st` must be of ::RUBY_T_STRUCT.
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*/
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VALUE rb_struct_aref(VALUE st, VALUE k);
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/**
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* Resembles `Struct#[]=`.
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*
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* @param[out] st An instance of RStruct.
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* @param[in] k Index a.k.a. key of the struct.
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* @param[in] v Value to store.
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* @exception rb_eTypeError `k` is neither Numeric, Symbol, nor String.
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* @exception rb_eIndexError Numerical index out of range.
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* @exception rb_eNameError No such key.
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* @return Passed `v`.
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* @pre `st` must be of ::RUBY_T_STRUCT.
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* @post `v` is stored at `k` in `st`.
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*/
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VALUE rb_struct_aset(VALUE st, VALUE k, VALUE v);
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RBIMPL_SYMBOL_EXPORT_END()
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RBIMPL_ATTR_ARTIFICIAL()
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/** @copydoc rb_struct_size() */
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static inline long
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RSTRUCT_LEN(VALUE st)
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{
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RBIMPL_ASSERT_TYPE(st, RUBY_T_STRUCT);
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return RB_NUM2LONG(rb_struct_size(st));
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}
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RBIMPL_ATTR_ARTIFICIAL()
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/** @copydoc rb_struct_aset() */
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static inline VALUE
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RSTRUCT_SET(VALUE st, int k, VALUE v)
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{
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RBIMPL_ASSERT_TYPE(st, RUBY_T_STRUCT);
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return rb_struct_aset(st, INT2NUM(k), (v));
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}
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RBIMPL_ATTR_ARTIFICIAL()
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/** @copydoc rb_struct_aref() */
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static inline VALUE
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RSTRUCT_GET(VALUE st, int k)
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{
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RBIMPL_ASSERT_TYPE(st, RUBY_T_STRUCT);
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return rb_struct_aref(st, INT2NUM(k));
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}
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#endif /* RBIMPL_RSTRUCT_H */
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