forked from dolphin-emu/dolphin
6763a3fce1
This makes it possible to use enums as the config type.
Default values are now clearer and there's no need for casts
when calling Config::Get/Set anymore.
In order to add support for enums, the common code was updated to
handle enums by using the underlying type when loading/saving settings.
A copy constructor is also provided for conversions from
`ConfigInfo<Enum>` to `ConfigInfo<underlying_type<Enum>>`
so that enum settings can still easily work with code that doesn't care
about the actual enum values (like Graphics{Choice,Radio} in DolphinQt2
which only treat the setting as an integer).
54 lines
1.4 KiB
C++
54 lines
1.4 KiB
C++
// Copyright 2017 Dolphin Emulator Project
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// Licensed under GPLv2+
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// Refer to the license.txt file included.
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#pragma once
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#include <string>
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#include <type_traits>
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#include "Common/Config/Enums.h"
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namespace Config
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{
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namespace detail
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{
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// std::underlying_type may only be used with enum types, so make sure T is an enum type first.
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template <typename T>
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using UnderlyingType = typename std::enable_if_t<std::is_enum<T>{}, std::underlying_type<T>>::type;
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} // namespace detail
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struct ConfigLocation
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{
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System system;
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std::string section;
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std::string key;
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bool operator==(const ConfigLocation& other) const;
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bool operator!=(const ConfigLocation& other) const;
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bool operator<(const ConfigLocation& other) const;
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};
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template <typename T>
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struct ConfigInfo
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{
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ConfigInfo(const ConfigLocation& location_, const T& default_value_)
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: location{location_}, default_value{default_value_}
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{
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}
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// Make it easy to convert ConfigInfo<Enum> into ConfigInfo<UnderlyingType<Enum>>
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// so that enum settings can still easily work with code that doesn't care about the enum values.
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template <typename Enum,
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std::enable_if_t<std::is_same<T, detail::UnderlyingType<Enum>>::value>* = nullptr>
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ConfigInfo(const ConfigInfo<Enum>& other)
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: location{other.location}, default_value{static_cast<detail::UnderlyingType<Enum>>(
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other.default_value)}
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{
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}
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ConfigLocation location;
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T default_value;
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};
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}
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