mirror of
https://github.com/boostorg/core.git
synced 2025-11-28 21:30:09 +01:00
148 lines
4.1 KiB
C++
148 lines
4.1 KiB
C++
// Copyright 2021, 2024 Peter Dimov
|
|
// Distributed under the Boost Software License, Version 1.0.
|
|
// https://www.boost.org/LICENSE_1_0.txt
|
|
|
|
#include <boost/core/detail/string_view.hpp>
|
|
#include <boost/config.hpp>
|
|
#include <boost/config/pragma_message.hpp>
|
|
|
|
#if defined(BOOST_NO_CXX14_CONSTEXPR)
|
|
|
|
BOOST_PRAGMA_MESSAGE( "Test skipped because BOOST_NO_CXX14_CONSTEXPR is defined" )
|
|
int main() {}
|
|
|
|
#else
|
|
|
|
#if !defined(BOOST_NO_CXX17_HDR_STRING_VIEW)
|
|
# include <string_view>
|
|
#endif
|
|
|
|
#define STATIC_ASSERT(...) static_assert(__VA_ARGS__, #__VA_ARGS__)
|
|
|
|
int main()
|
|
{
|
|
{
|
|
constexpr boost::core::string_view sv;
|
|
|
|
STATIC_ASSERT( sv.data() == nullptr );
|
|
STATIC_ASSERT( sv.size() == 0 );
|
|
|
|
STATIC_ASSERT( sv.begin() == sv.data() );
|
|
STATIC_ASSERT( sv.end() == sv.data() + sv.size() );
|
|
|
|
STATIC_ASSERT( sv.cbegin() == sv.data() );
|
|
STATIC_ASSERT( sv.cend() == sv.data() + sv.size() );
|
|
|
|
STATIC_ASSERT( sv.length() == sv.size() );
|
|
STATIC_ASSERT( sv.empty() == ( sv.size() == 0 ) );
|
|
|
|
STATIC_ASSERT( sv.max_size() == boost::core::string_view::npos );
|
|
}
|
|
|
|
{
|
|
constexpr char const* s = "123";
|
|
|
|
constexpr boost::core::string_view sv( s, 0 );
|
|
|
|
STATIC_ASSERT( sv.data() == s );
|
|
STATIC_ASSERT( sv.size() == 0 );
|
|
|
|
STATIC_ASSERT( sv.begin() == sv.data() );
|
|
STATIC_ASSERT( sv.end() == sv.data() + sv.size() );
|
|
|
|
STATIC_ASSERT( sv.cbegin() == sv.data() );
|
|
STATIC_ASSERT( sv.cend() == sv.data() + sv.size() );
|
|
|
|
STATIC_ASSERT( sv.length() == sv.size() );
|
|
STATIC_ASSERT( sv.empty() == ( sv.size() == 0 ) );
|
|
|
|
STATIC_ASSERT( sv.max_size() == boost::core::string_view::npos );
|
|
}
|
|
|
|
{
|
|
constexpr char const* s = "123";
|
|
|
|
constexpr boost::core::string_view sv( s, 2 );
|
|
|
|
STATIC_ASSERT( sv.data() == s );
|
|
STATIC_ASSERT( sv.size() == 2 );
|
|
|
|
STATIC_ASSERT( sv.begin() == sv.data() );
|
|
STATIC_ASSERT( sv.end() == sv.data() + sv.size() );
|
|
|
|
STATIC_ASSERT( sv.cbegin() == sv.data() );
|
|
STATIC_ASSERT( sv.cend() == sv.data() + sv.size() );
|
|
|
|
STATIC_ASSERT( sv.length() == sv.size() );
|
|
STATIC_ASSERT( sv.empty() == ( sv.size() == 0 ) );
|
|
|
|
STATIC_ASSERT( sv.max_size() == boost::core::string_view::npos );
|
|
}
|
|
|
|
{
|
|
constexpr char const* s = "123";
|
|
|
|
constexpr boost::core::string_view sv( s, s );
|
|
|
|
STATIC_ASSERT( sv.data() == s );
|
|
STATIC_ASSERT( sv.size() == 0 );
|
|
|
|
STATIC_ASSERT( sv.begin() == sv.data() );
|
|
STATIC_ASSERT( sv.end() == sv.data() + sv.size() );
|
|
|
|
STATIC_ASSERT( sv.cbegin() == sv.data() );
|
|
STATIC_ASSERT( sv.cend() == sv.data() + sv.size() );
|
|
|
|
STATIC_ASSERT( sv.length() == sv.size() );
|
|
STATIC_ASSERT( sv.empty() == ( sv.size() == 0 ) );
|
|
|
|
STATIC_ASSERT( sv.max_size() == boost::core::string_view::npos );
|
|
}
|
|
|
|
{
|
|
constexpr char const* s = "123";
|
|
|
|
constexpr boost::core::string_view sv( s, s + 2 );
|
|
|
|
STATIC_ASSERT( sv.data() == s );
|
|
STATIC_ASSERT( sv.size() == 2 );
|
|
|
|
STATIC_ASSERT( sv.begin() == sv.data() );
|
|
STATIC_ASSERT( sv.end() == sv.data() + sv.size() );
|
|
|
|
STATIC_ASSERT( sv.cbegin() == sv.data() );
|
|
STATIC_ASSERT( sv.cend() == sv.data() + sv.size() );
|
|
|
|
STATIC_ASSERT( sv.length() == sv.size() );
|
|
STATIC_ASSERT( sv.empty() == ( sv.size() == 0 ) );
|
|
|
|
STATIC_ASSERT( sv.max_size() == boost::core::string_view::npos );
|
|
}
|
|
|
|
#if !defined(BOOST_NO_CXX17_HDR_STRING_VIEW)
|
|
|
|
{
|
|
constexpr std::string_view str( "123", 3 );
|
|
|
|
constexpr boost::core::string_view sv( str );
|
|
|
|
STATIC_ASSERT( sv.data() == str.data() );
|
|
STATIC_ASSERT( sv.size() == str.size() );
|
|
|
|
STATIC_ASSERT( sv.begin() == sv.data() );
|
|
STATIC_ASSERT( sv.end() == sv.data() + sv.size() );
|
|
|
|
STATIC_ASSERT( sv.cbegin() == sv.data() );
|
|
STATIC_ASSERT( sv.cend() == sv.data() + sv.size() );
|
|
|
|
STATIC_ASSERT( sv.length() == sv.size() );
|
|
STATIC_ASSERT( sv.empty() == ( sv.size() == 0 ) );
|
|
|
|
STATIC_ASSERT( sv.max_size() == boost::core::string_view::npos );
|
|
}
|
|
|
|
#endif
|
|
}
|
|
|
|
#endif
|