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According to MSVC manual (*1), cl.exe can skip including a header file when that: - contains #pragma once, or - starts with #ifndef, or - starts with #if ! defined. GCC has a similar trick (*2), but it acts more stricter (e. g. there must be _no tokens_ outside of #ifndef...#endif). Sun C lacked #pragma once for a looong time. Oracle Developer Studio 12.5 finally implemented it, but we cannot assume such recent version. This changeset modifies header files so that each of them include strictly one #ifndef...#endif. I believe this is the most portable way to trigger compiler optimizations. [Bug #16770] *1: https://docs.microsoft.com/en-us/cpp/preprocessor/once *2: https://gcc.gnu.org/onlinedocs/cppinternals/Guard-Macros.html
83 lines
3.4 KiB
C++
83 lines
3.4 KiB
C++
#ifndef RUBY3_INTERN_VARIABLE_H /*-*-C++-*-vi:se ft=cpp:*/
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#define RUBY3_INTERN_VARIABLE_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 `RUBY3` or `ruby3` 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 Public APIs related to names inside of a Ruby program.
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*/
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#include "ruby/3/attr/noreturn.h"
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#include "ruby/3/dllexport.h"
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#include "ruby/3/value.h"
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#include "ruby/st.h"
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RUBY3_SYMBOL_EXPORT_BEGIN()
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/* variable.c */
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VALUE rb_mod_name(VALUE);
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VALUE rb_class_path(VALUE);
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VALUE rb_class_path_cached(VALUE);
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void rb_set_class_path(VALUE, VALUE, const char*);
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void rb_set_class_path_string(VALUE, VALUE, VALUE);
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VALUE rb_path_to_class(VALUE);
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VALUE rb_path2class(const char*);
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VALUE rb_class_name(VALUE);
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VALUE rb_autoload_load(VALUE, ID);
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VALUE rb_autoload_p(VALUE, ID);
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VALUE rb_f_trace_var(int, const VALUE*);
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VALUE rb_f_untrace_var(int, const VALUE*);
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VALUE rb_f_global_variables(void);
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void rb_alias_variable(ID, ID);
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void rb_copy_generic_ivar(VALUE,VALUE);
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void rb_free_generic_ivar(VALUE);
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VALUE rb_ivar_get(VALUE, ID);
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VALUE rb_ivar_set(VALUE, ID, VALUE);
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VALUE rb_ivar_defined(VALUE, ID);
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void rb_ivar_foreach(VALUE, int (*)(ID, VALUE, st_data_t), st_data_t);
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st_index_t rb_ivar_count(VALUE);
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VALUE rb_attr_get(VALUE, ID);
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VALUE rb_obj_instance_variables(VALUE);
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VALUE rb_obj_remove_instance_variable(VALUE, VALUE);
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void *rb_mod_const_at(VALUE, void*);
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void *rb_mod_const_of(VALUE, void*);
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VALUE rb_const_list(void*);
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VALUE rb_mod_constants(int, const VALUE *, VALUE);
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VALUE rb_mod_remove_const(VALUE, VALUE);
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int rb_const_defined(VALUE, ID);
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int rb_const_defined_at(VALUE, ID);
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int rb_const_defined_from(VALUE, ID);
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VALUE rb_const_get(VALUE, ID);
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VALUE rb_const_get_at(VALUE, ID);
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VALUE rb_const_get_from(VALUE, ID);
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void rb_const_set(VALUE, ID, VALUE);
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VALUE rb_const_remove(VALUE, ID);
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#if 0 /* EXPERIMENTAL: remove if no problem */
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RUBY3_ATTR_NORETURN()
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VALUE rb_mod_const_missing(VALUE,VALUE);
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#endif
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VALUE rb_cvar_defined(VALUE, ID);
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void rb_cvar_set(VALUE, ID, VALUE);
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VALUE rb_cvar_get(VALUE, ID);
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void rb_cv_set(VALUE, const char*, VALUE);
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VALUE rb_cv_get(VALUE, const char*);
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void rb_define_class_variable(VALUE, const char*, VALUE);
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VALUE rb_mod_class_variables(int, const VALUE*, VALUE);
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VALUE rb_mod_remove_cvar(VALUE, VALUE);
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RUBY3_SYMBOL_EXPORT_END()
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#endif /* RUBY3_INTERN_VARIABLE_H */
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