Emily Boudreaux
ec13264050
A bug was discovered in glaze which prevented valid toml output. We have switched to toml++ and reflect-cpp. The interface has remained the same so this should not break any code
60 lines
1.7 KiB
C++
60 lines
1.7 KiB
C++
#ifndef RFL_ANYOF_HPP_
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#define RFL_ANYOF_HPP_
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#include <sstream>
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#include <string>
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#include <utility>
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#include <vector>
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#include "Result.hpp"
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#include "parsing/schema/ValidationType.hpp"
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namespace rfl {
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/// Requires that all of the contraints C and Cs be true.
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template <class C, class... Cs>
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struct AnyOf {
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template <class T>
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static rfl::Result<T> validate(const T& _value) noexcept {
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return validate_impl<T, C, Cs...>(_value, {});
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}
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template <class T>
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static parsing::schema::ValidationType to_schema() {
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using ValidationType = parsing::schema::ValidationType;
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const auto types = std::vector<ValidationType>(
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{C::template to_schema<T>(), Cs::template to_schema<T>()...});
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return ValidationType{ValidationType::AnyOf{.types_ = types}};
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}
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private:
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static std::string make_error_message(const std::vector<Error>& _errors) {
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std::stringstream stream;
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stream << "Expected at least one of the following validations to pass, but "
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"none of them did:";
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for (size_t i = 0; i < _errors.size(); ++i) {
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stream << "\n" << i + 1 << ") " << _errors.at(i).what();
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}
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return stream.str();
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}
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template <class T, class Head, class... Tail>
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static rfl::Result<T> validate_impl(const T& _value,
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std::vector<Error> _errors) {
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const auto handle_err = [&](Error&& _err) -> rfl::Result<T> {
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_errors.push_back(std::forward<Error>(_err));
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if constexpr (sizeof...(Tail) == 0) {
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return error(make_error_message(_errors));
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} else {
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return validate_impl<T, Tail...>(
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_value, std::forward<std::vector<Error>>(_errors));
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}
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};
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return Head::validate(_value).or_else(handle_err);
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}
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};
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} // namespace rfl
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#endif
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