pcsx2/common/SettingsWrapper.h

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// SPDX-FileCopyrightText: 2002-2024 PCSX2 Dev Team
// SPDX-License-Identifier: GPL-3.0+
#pragma once
#include "SettingsInterface.h"
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#include "common/EnumOps.h"
#include "common/SmallString.h"
#include <optional>
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// Helper class which loads or saves depending on the derived class.
class SettingsWrapper
{
public:
SettingsWrapper(SettingsInterface& si);
virtual bool IsLoading() const = 0;
virtual bool IsSaving() const = 0;
virtual void Entry(const char* section, const char* var, int& value, const int defvalue = 0) = 0;
virtual void Entry(const char* section, const char* var, uint& value, const uint defvalue = 0) = 0;
virtual void Entry(const char* section, const char* var, bool& value, const bool defvalue = false) = 0;
virtual void Entry(const char* section, const char* var, float& value, const float defvalue = 0.0) = 0;
virtual void Entry(const char* section, const char* var, std::string& value, const std::string& default_value = std::string()) = 0;
virtual void Entry(const char* section, const char* var, SmallStringBase& value, std::string_view default_value = std::string_view()) = 0;
// This special form of Entry is provided for bitfields, which cannot be passed by reference.
virtual bool EntryBitBool(const char* section, const char* var, bool value, const bool defvalue = false) = 0;
virtual int EntryBitfield(const char* section, const char* var, int value, const int defvalue = 0) = 0;
template <typename T>
void EnumEntry(const char* section, const char* var, T& value, const char* const* enumArray = nullptr, const T defvalue = (T)0)
{
int tstore = (int)value;
auto defaultvalue = enum_cast(defvalue);
if (enumArray == NULL)
Entry(section, var, tstore, defaultvalue);
else
_EnumEntry(section, var, tstore, enumArray, defaultvalue);
value = (T)tstore;
}
template <typename T>
void EnumEntry(const char* section, const char* var, T& value, std::optional<T> (*parse_function)(const char*),
const char*(name_function)(T value), T default_value)
{
TinyString str_value(name_function(value));
Entry(section, var, str_value, name_function(default_value));
if (std::optional<T> parsed_value = parse_function(str_value); parsed_value.has_value())
value = parsed_value.value();
}
protected:
virtual void _EnumEntry(const char* section, const char* var, int& value, const char* const* enumArray, int defvalue) = 0;
SettingsInterface& m_si;
};
class SettingsLoadWrapper final : public SettingsWrapper
{
public:
SettingsLoadWrapper(SettingsInterface& si);
bool IsLoading() const override;
bool IsSaving() const override;
void Entry(const char* section, const char* var, int& value, const int defvalue = 0) override;
void Entry(const char* section, const char* var, uint& value, const uint defvalue = 0) override;
void Entry(const char* section, const char* var, bool& value, const bool defvalue = false) override;
void Entry(const char* section, const char* var, float& value, const float defvalue = 0.0) override;
void Entry(const char* section, const char* var, std::string& value, const std::string& default_value = std::string()) override;
void Entry(const char* section, const char* var, SmallStringBase& value, std::string_view default_value = std::string_view()) override;
bool EntryBitBool(const char* section, const char* var, bool value, const bool defvalue = false) override;
int EntryBitfield(const char* section, const char* var, int value, const int defvalue = 0) override;
protected:
void _EnumEntry(const char* section, const char* var, int& value, const char* const* enumArray, int defvalue) override;
};
class SettingsSaveWrapper final : public SettingsWrapper
{
public:
SettingsSaveWrapper(SettingsInterface& si);
bool IsLoading() const override;
bool IsSaving() const override;
void Entry(const char* section, const char* var, int& value, const int defvalue = 0) override;
void Entry(const char* section, const char* var, uint& value, const uint defvalue = 0) override;
void Entry(const char* section, const char* var, bool& value, const bool defvalue = false) override;
void Entry(const char* section, const char* var, float& value, const float defvalue = 0.0) override;
void Entry(const char* section, const char* var, std::string& value, const std::string& default_value = std::string()) override;
void Entry(const char* section, const char* var, SmallStringBase& value, std::string_view default_value = std::string_view()) override;
bool EntryBitBool(const char* section, const char* var, bool value, const bool defvalue = false) override;
int EntryBitfield(const char* section, const char* var, int value, const int defvalue = 0) override;
protected:
void _EnumEntry(const char* section, const char* var, int& value, const char* const* enumArray, int defvalue) override;
};
class SettingsClearWrapper final : public SettingsWrapper
{
public:
SettingsClearWrapper(SettingsInterface& si);
bool IsLoading() const override;
bool IsSaving() const override;
void Entry(const char* section, const char* var, int& value, const int defvalue = 0) override;
void Entry(const char* section, const char* var, uint& value, const uint defvalue = 0) override;
void Entry(const char* section, const char* var, bool& value, const bool defvalue = false) override;
void Entry(const char* section, const char* var, float& value, const float defvalue = 0.0) override;
void Entry(const char* section, const char* var, std::string& value, const std::string& default_value = std::string()) override;
void Entry(const char* section, const char* var, SmallStringBase& value, std::string_view default_value = std::string_view()) override;
bool EntryBitBool(const char* section, const char* var, bool value, const bool defvalue = false) override;
int EntryBitfield(const char* section, const char* var, int value, const int defvalue = 0) override;
protected:
void _EnumEntry(const char* section, const char* var, int& value, const char* const* enumArray, int defvalue) override;
};
#define SettingsWrapSection(section) const char* CURRENT_SETTINGS_SECTION = section;
#define SettingsWrapEntry(var) wrap.Entry(CURRENT_SETTINGS_SECTION, #var, var, var)
#define SettingsWrapEntryEx(var, name) wrap.Entry(CURRENT_SETTINGS_SECTION, name, var, var)
#define SettingsWrapBitfield(varname) varname = wrap.EntryBitfield(CURRENT_SETTINGS_SECTION, #varname, varname, varname)
#define SettingsWrapBitBool(varname) varname = wrap.EntryBitBool(CURRENT_SETTINGS_SECTION, #varname, !!varname, varname)
#define SettingsWrapBitfieldEx(varname, textname) varname = wrap.EntryBitfield(CURRENT_SETTINGS_SECTION, textname, varname, varname)
#define SettingsWrapBitBoolEx(varname, textname) varname = wrap.EntryBitBool(CURRENT_SETTINGS_SECTION, textname, !!varname, varname)
#define SettingsWrapEnumEx(varname, textname, names) wrap.EnumEntry(CURRENT_SETTINGS_SECTION, textname, varname, names, varname)
#define SettingsWrapParsedEnum(varname, textname, parse_func, name_func) wrap.EnumEntry(CURRENT_SETTINGS_SECTION, textname, varname, parse_func, name_func, varname)
#define SettingsWrapIntEnumEx(varname, textname) varname = static_cast<decltype(varname)>(wrap.EntryBitfield(CURRENT_SETTINGS_SECTION, textname, static_cast<int>(varname), static_cast<int>(varname)))