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#include "sanitizerimpl.hpp"
#include <osg/Vec3f>
#include <algorithm>
#include <cassert>
#include <cmath>
#include <limits>
#include <sstream>
#include <stdexcept>
#include <type_traits>
#include <utility>
#include <vector>
namespace Settings
{
namespace
{
template <class T>
struct Max final : Sanitizer<T>
{
T mMax;
explicit Max(const T& max)
: mMax(max)
{
}
T apply(const T& value) const override { return std::max(value, mMax); }
};
template <class T>
struct MaxStrict final : Sanitizer<T>
{
static_assert(std::is_floating_point_v<T>);
T mMax;
explicit MaxStrict(const T& max)
: mMax(std::nextafter(max, std::numeric_limits<T>::max()))
{
}
T apply(const T& value) const override { return std::max(value, mMax); }
};
template <>
struct MaxStrict<osg::Vec3f> final : Sanitizer<osg::Vec3f>
{
osg::Vec3f mMax;
explicit MaxStrict(const osg::Vec3f& max)
: mMax(std::nextafter(max.x(), std::numeric_limits<float>::max()),
std::nextafter(max.y(), std::numeric_limits<float>::max()),
std::nextafter(max.z(), std::numeric_limits<float>::max()))
{
}
osg::Vec3f apply(const osg::Vec3f& value) const override
{
return osg::Vec3f(
std::max(value.x(), mMax.x()), std::max(value.y(), mMax.y()), std::max(value.z(), mMax.z()));
}
};
template <class T>
struct Clamp final : Sanitizer<T>
{
T mMin;
T mMax;
explicit Clamp(const T& min, const T& max)
: mMin(min)
, mMax(max)
{
}
T apply(const T& value) const override { return std::clamp(value, mMin, mMax); }
};
template <class T>
auto getPrev(const T& value) -> std::enable_if_t<std::is_floating_point_v<T>, T>
{
assert(value > -std::numeric_limits<T>::max());
return std::nextafter(value, -std::numeric_limits<T>::max());
}
template <class T>
struct ClampStrictMax final : Sanitizer<T>
{
T mMin;
T mMax;
explicit ClampStrictMax(const T& min, const T& max)
: mMin(min)
, mMax(getPrev(max))
{
}
T apply(const T& value) const override { return std::clamp(value, mMin, mMax); }
};
template <class T>
struct Enum final : Sanitizer<T>
{
std::vector<T> mValues;
explicit Enum(std::initializer_list<T> value)
: mValues(std::make_move_iterator(value.begin()), std::make_move_iterator(value.end()))
{
}
T apply(const T& value) const override
{
if (std::find(mValues.begin(), mValues.end(), value) == mValues.end())
{
std::ostringstream message;
message << "Invalid enum value: " << value;
throw std::runtime_error(message.str());
}
return value;
}
};
template <class T>
struct EqualOrMax final : Sanitizer<T>
{
T mEqual;
T mMax;
explicit EqualOrMax(const T& equal, const T& max)
: mEqual(equal)
, mMax(max)
{
}
T apply(const T& value) const override
{
if (value == mEqual)
return value;
return std::max(value, mMax);
}
};
}
std::unique_ptr<Sanitizer<float>> makeMaxSanitizerFloat(float max)
{
return std::make_unique<Max<float>>(max);
}
std::unique_ptr<Sanitizer<int>> makeMaxSanitizerInt(int max)
{
return std::make_unique<Max<int>>(max);
}
std::unique_ptr<Sanitizer<std::size_t>> makeMaxSanitizerSize(std::size_t max)
{
return std::make_unique<Max<std::size_t>>(max);
}
std::unique_ptr<Sanitizer<std::uint64_t>> makeMaxSanitizerUInt64(std::uint64_t max)
{
return std::make_unique<Max<std::uint64_t>>(max);
}
std::unique_ptr<Sanitizer<float>> makeMaxStrictSanitizerFloat(float max)
{
return std::make_unique<MaxStrict<float>>(max);
}
std::unique_ptr<Sanitizer<osg::Vec3f>> makeMaxStrictSanitizerVec3f(const osg::Vec3f& max)
{
return std::make_unique<MaxStrict<osg::Vec3f>>(max);
}
std::unique_ptr<Sanitizer<float>> makeClampSanitizerFloat(float min, float max)
{
return std::make_unique<Clamp<float>>(min, max);
}
std::unique_ptr<Sanitizer<double>> makeClampSanitizerDouble(double min, double max)
{
return std::make_unique<Clamp<double>>(min, max);
}
std::unique_ptr<Sanitizer<int>> makeClampSanitizerInt(int min, int max)
{
return std::make_unique<Clamp<int>>(min, max);
}
std::unique_ptr<Sanitizer<float>> makeClampStrictMaxSanitizerFloat(float min, float max)
{
return std::make_unique<ClampStrictMax<float>>(min, max);
}
std::unique_ptr<Sanitizer<int>> makeEnumSanitizerInt(std::initializer_list<int> values)
{
return std::make_unique<Enum<int>>(values);
}
std::unique_ptr<Sanitizer<std::string>> makeEnumSanitizerString(std::initializer_list<std::string> values)
{
return std::make_unique<Enum<std::string>>(values);
}
std::unique_ptr<Sanitizer<float>> makeEqualOrMaxSanitizerFloat(float equal, float max)
{
return std::make_unique<EqualOrMax<float>>(equal, max);
}
}
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