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Added generic container detection in StringMaker.

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Removed vector specialisation as this is now covered generically - as are any containers that can be called via (freestanding) begin/ end
This commit is contained in:
Phil Nash 2018-01-04 09:30:06 +00:00
parent c3a1143d23
commit af3f2499bc
1 changed files with 26 additions and 7 deletions
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33
include/internal/catch_tostring.h
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@ -60,7 +60,7 @@ namespace Catch {
} // namespace Detail
// If we decide for C++14, change these to enable_if_ts
template <typename T>
template <typename T, typename = void>
struct StringMaker {
template <typename Fake = T>
static
@ -233,12 +233,6 @@ namespace Catch {
}
}
template<typename T, typename Allocator>
struct StringMaker<std::vector<T, Allocator> > {
static std::string convert( std::vector<T,Allocator> const& v ) {
return ::Catch::Detail::rangeToString( v.begin(), v.end() );
}
};
template<typename T>
struct EnumStringMaker {
@ -344,6 +338,31 @@ namespace Catch {
}
#endif // CATCH_CONFIG_ENABLE_TUPLE_STRINGMAKER
namespace Catch {
struct not_this_one {}; // Tag type for detecting which begin/ end are being selected
// Import begin/ end from std here so they are considered alongside the fallback (...) overloads in this namespace
using std::begin;
using std::end;
not_this_one begin( ... );
not_this_one end( ... );
template <typename T>
struct is_range {
static const bool value =
!std::is_same<decltype(begin(std::declval<T>())), not_this_one>::value &&
!std::is_same<decltype(end(std::declval<T>())), not_this_one>::value;
};
template<typename R>
struct StringMaker<R, typename std::enable_if<is_range<R>::value>::type> {
static std::string convert( R const& range ) {
return ::Catch::Detail::rangeToString( begin( range ), end( range ) );
}
};
} // namespace Catch
// Separate std::chrono::duration specialization
#if defined(CATCH_CONFIG_ENABLE_CHRONO_STRINGMAKER)