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| author | DongHun Kwak <dh0128.kwak@samsung.com> | 2019-12-05 15:12:59 +0900 |
|---|---|---|
| committer | DongHun Kwak <dh0128.kwak@samsung.com> | 2019-12-05 15:12:59 +0900 |
| commit | b8cf34c691623e4ec329053cbbf68522a855882d (patch) | |
| tree | 34da08632a99677f6b79ecb65e5b655a5b69a67f /boost/contract/detail/operator_safe_bool.hpp | |
| parent | 3fdc3e5ee96dca5b11d1694975a65200787eab86 (diff) | |
| download | boost-b8cf34c691623e4ec329053cbbf68522a855882d.tar.gz boost-b8cf34c691623e4ec329053cbbf68522a855882d.tar.bz2 boost-b8cf34c691623e4ec329053cbbf68522a855882d.zip | |
Imported Upstream version 1.67.0upstream/1.67.0
Diffstat (limited to 'boost/contract/detail/operator_safe_bool.hpp')
| -rw-r--r-- | boost/contract/detail/operator_safe_bool.hpp | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/boost/contract/detail/operator_safe_bool.hpp b/boost/contract/detail/operator_safe_bool.hpp new file mode 100644 index 0000000000..65edc32dd8 --- /dev/null +++ b/boost/contract/detail/operator_safe_bool.hpp @@ -0,0 +1,73 @@ + +#ifndef BOOST_CONTRACT_DETAIL_OPERATOR_SAFE_BOOL_HPP_ +#define BOOST_CONTRACT_DETAIL_OPERATOR_SAFE_BOOL_HPP_ + +// Copyright (C) 2008-2018 Lorenzo Caminiti +// Distributed under the Boost Software License, Version 1.0 (see accompanying +// file LICENSE_1_0.txt or a copy at http://www.boost.org/LICENSE_1_0.txt). +// See: http://www.boost.org/doc/libs/release/libs/contract/doc/html/index.html + +#include <boost/contract/detail/name.hpp> +#include <boost/config.hpp> +#include <boost/detail/workaround.hpp> + +// NOTE: This code is inspired by <boost/shared_ptr/detail/operator_bool.hpp>. + +/* PRIVATE */ + +// operator! is redundant, but some compilers need it. +#define BOOST_CONTRACT_OPERATOR_SAFE_BOOL_NOT_(bool_expr) \ + bool operator!() const BOOST_NOEXCEPT { return !(bool_expr); } + +/* PUBLIC */ + +#if !defined(BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS) && \ + !defined(BOOST_NO_CXX11_NULLPTR) + #define BOOST_CONTRACT_DETAIL_OPERATOR_SAFE_BOOL(this_type, bool_expr) \ + explicit operator bool() const BOOST_NOEXCEPT { return (bool_expr); } \ + BOOST_CONTRACT_OPERATOR_SAFE_BOOL_NOT_(bool_expr) +#elif (defined(__SUNPRO_CC) && BOOST_WORKAROUND(__SUNPRO_CC, < 0x570) ) || \ + defined(__CINT__) + #define BOOST_CONTRACT_DETAIL_OPERATOR_SAFE_BOOL(this_type, bool_expr) \ + operator bool() const BOOST_NOEXCEPT { return (bool_expr); } \ + BOOST_CONTRACT_OPERATOR_SAFE_BOOL_NOT_(bool_expr) +#elif defined(_MANAGED) + #define BOOST_CONTRACT_DETAIL_OPERATOR_SAFE_BOOL(this_type, bool_expr) \ + static void BOOST_CONTRACT_DETAIL_NAME1(operator_safe_bool_func)( \ + this_type***) {} \ + typedef void (*BOOST_CONTRACT_DETAIL_NAME1(operator_safe_bool_type))( \ + this_type***); \ + operator BOOST_CONTRACT_DETAIL_NANE(operator_safe_bool_type)() \ + const BOOST_NOEXCEPT { \ + return (bool_expr) ? \ + &BOOST_CONTRACT_DETAIL_NAME1(operator_safe_bool_func) : 0; \ + } \ + BOOST_CONTRACT_OPERATOR_SAFE_BOOL_NOT_(bool_expr) +#elif (defined(__MWERKS__) && BOOST_WORKAROUND(__MWERKS__, < 0x3200)) || \ + (defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__ < 304)) || \ + (defined(__SUNPRO_CC) && BOOST_WORKAROUND(__SUNPRO_CC, <= 0x590)) + #define BOOST_CONTRACT_DETAIL_OPERATOR_SAFE_BOOL(this_type, bool_expr) \ + void BOOST_CONTRACT_DETAIL_NAME1(operator_safe_bool_func)() const {} \ + typedef void (this_type::*BOOST_CONTRACT_DETAIL_NAME1( \ + operator_safe_bool_type))() const; \ + operator BOOST_CONTRACT_DETAIL_NAME1(operator_safe_bool_type)() \ + const BOOST_NOEXCEPT { \ + return (bool_expr) ? &this_type:: \ + BOOST_CONTRACT_DETAIL_NAME1(operator_safe_bool_func) : 0; \ + } \ + BOOST_CONTRACT_OPERATOR_SAFE_BOOL_NOT_(bool_expr) +#else + #define BOOST_CONTRACT_DETAIL_OPERATOR_SAFE_BOOL(this_type, bool_expr) \ + void* BOOST_CONTRACT_DETAIL_NAME1(operator_safe_bool_data); \ + typedef void* this_type::*BOOST_CONTRACT_DETAIL_NAME1( \ + operator_safe_bool_type);\ + operator BOOST_CONTRACT_DETAIL_NAME1(operator_safe_bool_type)() \ + const BOOST_NOEXCEPT { \ + return (bool_expr) ? &this_type:: \ + BOOST_CONTRACT_DETAIL_NAME1(operator_safe_bool_data) : 0; \ + } \ + BOOST_CONTRACT_OPERATOR_SAFE_BOOL_NOT_(bool_expr) +#endif + +#endif // #include guard + |