diff options
Diffstat (limited to 'src/openvic-dataloader/detail/LexyLitRange.hpp')
| -rw-r--r-- | src/openvic-dataloader/detail/LexyLitRange.hpp | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/src/openvic-dataloader/detail/LexyLitRange.hpp b/src/openvic-dataloader/detail/LexyLitRange.hpp new file mode 100644 index 0000000..a6761a8 --- /dev/null +++ b/src/openvic-dataloader/detail/LexyLitRange.hpp @@ -0,0 +1,16 @@ +#pragma once + +#include <lexy/dsl/literal.hpp> + +namespace ovdl::detail::lexydsl { + template<unsigned char LOW, unsigned char HIGH> + consteval auto make_range() { + if constexpr (LOW == HIGH) { + return lexy::dsl::lit_c<LOW>; + } else if constexpr (LOW == (HIGH - 1)) { + return lexy::dsl::lit_c<LOW> / lexy::dsl::lit_c<HIGH>; + } else { + return lexy::dsl::lit_c<LOW> / make_range<LOW + 1, HIGH>(); + } + } +}
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