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Diffstat (limited to 'include/ruby/internal/value.h')
| -rw-r--r-- | include/ruby/internal/value.h | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/include/ruby/internal/value.h b/include/ruby/internal/value.h new file mode 100644 index 0000000000..905cc04187 --- /dev/null +++ b/include/ruby/internal/value.h @@ -0,0 +1,66 @@ +#ifndef RBIMPL_VALUE_H /*-*-C++-*-vi:se ft=cpp:*/ +#define RBIMPL_VALUE_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 ::VALUE and ::ID. + */ +#include "ruby/impl/static_assert.h" +#include "ruby/backward/2/long_long.h" +#include "ruby/backward/2/limits.h" + +#if defined HAVE_UINTPTR_T && 0 +typedef uintptr_t VALUE; +typedef uintptr_t ID; +# define SIGNED_VALUE intptr_t +# define SIZEOF_VALUE SIZEOF_UINTPTR_T +# undef PRI_VALUE_PREFIX +# define RBIMPL_VALUE_NULL UINTPTR_C(0) +# define RBIMPL_VALUE_ONE UINTPTR_C(1) +# define RBIMPL_VALUE_FULL UINTPTR_MAX + +#elif SIZEOF_LONG == SIZEOF_VOIDP +typedef unsigned long VALUE; +typedef unsigned long ID; +# define SIGNED_VALUE long +# define SIZEOF_VALUE SIZEOF_LONG +# define PRI_VALUE_PREFIX "l" +# define RBIMPL_VALUE_NULL 0UL +# define RBIMPL_VALUE_ONE 1UL +# define RBIMPL_VALUE_FULL ULONG_MAX + +#elif SIZEOF_LONG_LONG == SIZEOF_VOIDP +typedef unsigned LONG_LONG VALUE; +typedef unsigned LONG_LONG ID; +# define SIGNED_VALUE LONG_LONG +# define LONG_LONG_VALUE 1 +# define SIZEOF_VALUE SIZEOF_LONG_LONG +# define PRI_VALUE_PREFIX PRI_LL_PREFIX +# define RBIMPL_VALUE_NULL 0ULL +# define RBIMPL_VALUE_ONE 1ULL +# define RBIMPL_VALUE_FULL ULLONG_MAX + +#else +# error ---->> ruby requires sizeof(void*) == sizeof(long) or sizeof(LONG_LONG) to be compiled. <<---- +#endif + +RBIMPL_STATIC_ASSERT(sizeof_int, SIZEOF_INT == sizeof(int)); +RBIMPL_STATIC_ASSERT(sizeof_long, SIZEOF_LONG == sizeof(long)); +RBIMPL_STATIC_ASSERT(sizeof_long_long, SIZEOF_LONG_LONG == sizeof(LONG_LONG)); +RBIMPL_STATIC_ASSERT(sizeof_voidp, SIZEOF_VOIDP == sizeof(void *)); +#endif /* RBIMPL_VALUE_H */ |