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Contents
// Copyright (c) 2018-2020 Dr. Colin Hirsch and Daniel Frey
// Please see LICENSE for license or visit https://github.com/taocpp/json/
#ifndef TAO_JSON_CONTRIB_INTERNAL_INDIRECT_TRAITS_HPP
#define TAO_JSON_CONTRIB_INTERNAL_INDIRECT_TRAITS_HPP
#include <cassert>
#include "../../forward.hpp"
#include "../../type.hpp"
#include "../../events/produce.hpp"
#include "../../internal/type_traits.hpp"
namespace tao::json::internal
{
template< typename T >
struct indirect_traits
{
template< typename U >
[[nodiscard]] static const U& add_const( const U& u )
{
return u;
}
template< template< typename... > class Traits >
[[nodiscard]] static bool is_nothing( const T& o )
{
assert( o );
return internal::is_nothing< Traits >( add_const( *o ) );
}
template< template< typename... > class Traits >
static void assign( basic_value< Traits >& v, const T& o )
{
assert( o );
v = add_const( *o );
}
template< template< typename... > class Traits, typename Consumer >
static void produce( Consumer& c, const T& o )
{
assert( o );
json::events::produce< Traits >( c, add_const( *o ) );
}
template< template< typename... > class Traits >
[[nodiscard]] static bool equal( const basic_value< Traits >& lhs, const T& rhs ) noexcept
{
return rhs ? ( lhs == *rhs ) : ( lhs == null );
}
template< template< typename... > class Traits >
[[nodiscard]] static bool less_than( const basic_value< Traits >& lhs, const T& rhs ) noexcept
{
return rhs ? ( lhs < *rhs ) : ( lhs < null );
}
template< template< typename... > class Traits >
[[nodiscard]] static bool greater_than( const basic_value< Traits >& lhs, const T& rhs ) noexcept
{
return rhs ? ( lhs > *rhs ) : ( lhs > null );
}
};
} // namespace tao::json::internal
#endif
Version data entries
24 entries across 24 versions & 1 rubygems