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33 lines
712 B
33 lines
712 B
7 months ago
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// A Scalar that asserts for uninitialized access.
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template <typename T>
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class SafeScalar {
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public:
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SafeScalar() : initialized_(false) {}
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SafeScalar(const T& val) : val_(val), initialized_(true) {}
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template <typename Source>
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explicit SafeScalar(const Source& val) : SafeScalar(T(val)) {}
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operator T() const {
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VERIFY(initialized_ && "Uninitialized access.");
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return val_;
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}
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template <typename Target>
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explicit operator Target() const {
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return Target(this->operator T());
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}
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private:
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T val_;
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bool initialized_;
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};
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namespace Eigen {
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template <typename T>
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struct NumTraits<SafeScalar<T>> : GenericNumTraits<T> {
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enum { RequireInitialization = 1 };
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};
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} // namespace Eigen
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