mirror of
https://github.com/geode-sdk/geode.git
synced 2024-12-04 05:01:06 -05:00
70 lines
2.2 KiB
C++
70 lines
2.2 KiB
C++
|
// Copyright (c) 2020-2022 Dr. Colin Hirsch and Daniel Frey
|
||
|
|
// Please see LICENSE for license or visit https://github.com/taocpp/PEGTL/
|
||
|
|
|
||
|
|
#ifndef TAO_PEGTL_MUST_IF_HPP
|
||
|
|
#define TAO_PEGTL_MUST_IF_HPP
|
||
|
|
|
||
|
|
#if !defined( __cpp_exceptions )
|
||
|
|
#error "Exception support required for tao/pegtl/internal/must.hpp"
|
||
|
|
#else
|
||
|
|
|
||
|
|
#include <type_traits>
|
||
|
|
|
||
|
|
#include "config.hpp"
|
||
|
|
#include "normal.hpp"
|
||
|
|
|
||
|
|
namespace TAO_PEGTL_NAMESPACE
|
||
|
|
{
|
||
|
|
namespace internal
|
||
|
|
{
|
||
|
|
template< typename Errors, typename Rule, typename = void >
|
||
|
|
inline constexpr bool raise_on_failure = ( Errors::template message< Rule > != nullptr );
|
||
|
|
|
||
|
|
template< typename Errors, typename Rule >
|
||
|
|
inline constexpr bool raise_on_failure< Errors, Rule, std::void_t< decltype( Errors::template raise_on_failure< Rule > ) > > = Errors::template raise_on_failure< Rule >;
|
||
|
|
|
||
|
|
} // namespace internal
|
||
|
|
|
||
|
|
template< typename Errors, template< typename... > class Base = normal, bool RequireMessage = true >
|
||
|
|
struct must_if
|
||
|
|
{
|
||
|
|
template< typename Rule >
|
||
|
|
struct control
|
||
|
|
: Base< Rule >
|
||
|
|
{
|
||
|
|
template< typename ParseInput, typename... States >
|
||
|
|
static void failure( const ParseInput& in, States&&... st ) noexcept( noexcept( Base< Rule >::failure( in, st... ) ) && !internal::raise_on_failure< Errors, Rule > )
|
||
|
|
{
|
||
|
|
if constexpr( internal::raise_on_failure< Errors, Rule > ) {
|
||
|
|
raise( in, st... );
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
Base< Rule >::failure( in, st... );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
template< typename ParseInput, typename... States >
|
||
|
|
[[noreturn]] static void raise( const ParseInput& in, [[maybe_unused]] States&&... st )
|
||
|
|
{
|
||
|
|
if constexpr( RequireMessage ) {
|
||
|
|
static_assert( Errors::template message< Rule > != nullptr );
|
||
|
|
}
|
||
|
|
if constexpr( Errors::template message< Rule > != nullptr ) {
|
||
|
|
constexpr const char* p = Errors::template message< Rule >;
|
||
|
|
throw parse_error( p, in );
|
||
|
|
#if defined( _MSC_VER )
|
||
|
|
( (void)st, ... );
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
Base< Rule >::raise( in, st... );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
};
|
||
|
|
};
|
||
|
|
|
||
|
|
} // namespace TAO_PEGTL_NAMESPACE
|
||
|
|
|
||
|
|
#endif
|
||
|
|
#endif
|