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49 lines
1.2 KiB
C++
49 lines
1.2 KiB
C++
#pragma once
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#include <map>
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#include <string>
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namespace vcpkg
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{
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struct OptBool final
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{
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enum class BackingEnum
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{
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UNSPECIFIED = 0,
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ENABLED,
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DISABLED
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};
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static OptBool parse(const std::string& s);
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template<class T>
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static OptBool from_map(const std::map<T, std::string>& map, const T& key);
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constexpr OptBool() : backing_enum(BackingEnum::UNSPECIFIED) {}
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constexpr explicit OptBool(BackingEnum backing_enum) : backing_enum(backing_enum) {}
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constexpr operator BackingEnum() const { return backing_enum; }
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private:
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BackingEnum backing_enum;
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};
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namespace OptBoolC
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{
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static constexpr OptBool UNSPECIFIED(OptBool::BackingEnum::UNSPECIFIED);
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static constexpr OptBool ENABLED(OptBool::BackingEnum::ENABLED);
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static constexpr OptBool DISABLED(OptBool::BackingEnum::DISABLED);
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}
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template<class T>
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OptBool OptBool::from_map(const std::map<T, std::string>& map, const T& key)
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{
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auto it = map.find(key);
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if (it == map.cend())
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{
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return OptBoolC::UNSPECIFIED;
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}
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return parse(*it);
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}
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}
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