39 lines
1.2 KiB
C++
39 lines
1.2 KiB
C++
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#ifndef RFL_INTERNAL_TRANSFORMSNAKECASE_HPP_
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#define RFL_INTERNAL_TRANSFORMSNAKECASE_HPP_
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#include "StringLiteral.hpp"
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namespace rfl::internal {
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/// Capitalizes a lower-case character.
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template <char c>
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consteval char to_upper() {
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if constexpr (c >= 'a' && c <= 'z') {
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return c + ('A' - 'a');
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} else {
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return c;
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}
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}
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/// Transforms the field name from snake case to camel case.
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template <internal::StringLiteral _name, bool _capitalize, size_t _i = 0,
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char... chars>
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consteval auto transform_snake_case() {
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if constexpr (_i == _name.arr_.size()) {
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return StringLiteral<sizeof...(chars) + 1>(chars...);
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} else if constexpr (_name.arr_[_i] == '_') {
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return transform_snake_case<_name, true, _i + 1, chars...>();
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} else if constexpr (_name.arr_[_i] == '\0') {
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return transform_snake_case<_name, false, _name.arr_.size(), chars...>();
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} else if constexpr (_capitalize) {
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return transform_snake_case<_name, false, _i + 1, chars...,
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to_upper<_name.arr_[_i]>()>();
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} else {
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return transform_snake_case<_name, false, _i + 1, chars...,
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_name.arr_[_i]>();
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}
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}
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} // namespace rfl::internal
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#endif
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