geode/codegen/Broma/PEGTL-3.2.7/include/tao/pegtl/contrib/predicates.hpp

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2022-07-30 12:24:03 -04:00
// 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_CONTRIB_PREDICATES_HPP
#define TAO_PEGTL_CONTRIB_PREDICATES_HPP
#include "../config.hpp"
#include "../type_list.hpp"
#include "../internal/bump_help.hpp"
#include "../internal/dependent_false.hpp"
#include "../internal/enable_control.hpp"
#include "../internal/failure.hpp"
#include "../internal/peek_char.hpp"
#include "../internal/peek_utf8.hpp"
#include "analyze_traits.hpp"
namespace TAO_PEGTL_NAMESPACE
{
namespace internal
{
template< typename Peek, typename... Ps >
struct predicates_and_test
{
using peek_t = Peek;
using data_t = typename Peek::data_t;
[[nodiscard]] static constexpr bool test( const data_t c ) noexcept
{
return ( Ps::test( c ) && ... ); // TODO: Static assert that Ps::peek_t is the same as peek_t?!
}
};
template< typename Peek, typename P >
struct predicate_not_test
{
using peek_t = Peek;
using data_t = typename Peek::data_t;
[[nodiscard]] static constexpr bool test( const data_t c ) noexcept
{
return !P::test( c ); // TODO: Static assert that P::peek_t is the same as peek_t?!
}
};
template< typename Peek, typename... Ps >
struct predicates_or_test
{
using peek_t = Peek;
using data_t = typename Peek::data_t;
[[nodiscard]] static constexpr bool test( const data_t c ) noexcept
{
return ( Ps::test( c ) || ... ); // TODO: Static assert that Ps::peek_t is the same as peek_t?!
}
};
template< template< typename, typename... > class Test, typename Peek, typename... Ps >
struct predicates
: private Test< Peek, Ps... >
{
using peek_t = Peek;
using data_t = typename Peek::data_t;
using rule_t = predicates;
using subs_t = empty_list;
using base_t = Test< Peek, Ps... >;
using base_t::test;
template< int Eol >
static constexpr bool can_match_eol = test( Eol );
template< typename ParseInput >
[[nodiscard]] static bool match( ParseInput& in ) noexcept( noexcept( Peek::peek( in ) ) )
{
if( const auto t = Peek::peek( in ) ) {
if( test( t.data ) ) {
bump_help< predicates >( in, t.size );
return true;
}
}
return false;
}
};
template< template< typename, typename... > class Test, typename Peek >
struct predicates< Test, Peek >
{
static_assert( dependent_false< Peek >, "Empty predicate list is not allowed!" );
};
template< template< typename, typename... > class Test, typename Peek, typename... Ps >
inline constexpr bool enable_control< predicates< Test, Peek, Ps... > > = false;
} // namespace internal
inline namespace ascii
{
// clang-format off
template< typename... Ps > struct predicates_and : internal::predicates< internal::predicates_and_test, internal::peek_char, Ps... > {};
template< typename P > struct predicate_not : internal::predicates< internal::predicate_not_test, internal::peek_char, P > {};
template< typename... Ps > struct predicates_or : internal::predicates< internal::predicates_or_test, internal::peek_char, Ps... > {};
// clang-format on
} // namespace ascii
namespace utf8
{
// clang-format off
template< typename... Ps > struct predicates_and : internal::predicates< internal::predicates_and_test, internal::peek_utf8, Ps... > {};
template< typename P > struct predicate_not : internal::predicates< internal::predicate_not_test, internal::peek_utf8, P > {};
template< typename... Ps > struct predicates_or : internal::predicates< internal::predicates_or_test, internal::peek_utf8, Ps... > {};
// clang-format on
} // namespace utf8
template< typename Name, template< typename, typename... > class Test, typename Peek, typename... Ps >
struct analyze_traits< Name, internal::predicates< Test, Peek, Ps... > >
: analyze_any_traits<>
{};
} // namespace TAO_PEGTL_NAMESPACE
#endif