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Merge pull request #111 from neilmacintosh/master

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Adding noexcept to finally, final_act, narrow_cast. Fixes #92.
This commit is contained in:
Neil MacIntosh 2015-09-30 15:15:01 -07:00
commit 398abc8fa6
1 changed files with 6 additions and 6 deletions
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12
include/gsl.h
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@ -50,13 +50,13 @@ template <class F>
class final_act class final_act
{ {
public: public:
explicit final_act(F f) : f_(std::move(f)), invoke_(true) {} explicit final_act(F f) noexcept : f_(std::move(f)), invoke_(true) {}
final_act(final_act&& other) : f_(std::move(other.f_)), invoke_(true) { other.invoke_ = false; } final_act(final_act&& other) noexcept : f_(std::move(other.f_)), invoke_(true) { other.invoke_ = false; }
final_act(const final_act&) = delete; final_act(const final_act&) = delete;
final_act& operator=(const final_act&) = delete; final_act& operator=(const final_act&) = delete;
~final_act() { if (invoke_) f_(); } ~final_act() noexcept { if (invoke_) f_(); }
private: private:
F f_; F f_;
@ -65,14 +65,14 @@ private:
// finally() - convenience function to generate a final_act // finally() - convenience function to generate a final_act
template <class F> template <class F>
final_act<F> finally(const F &f) { return final_act<F>(f); } final_act<F> finally(const F &f) noexcept { return final_act<F>(f); }
template <class F> template <class F>
final_act<F> finally(F &&f) { return final_act<F>(std::forward<F>(f)); } final_act<F> finally(F &&f) noexcept { return final_act<F>(std::forward<F>(f)); }
// narrow_cast(): a searchable way to do narrowing casts of values // narrow_cast(): a searchable way to do narrowing casts of values
template<class T, class U> template<class T, class U>
T narrow_cast(U u) { return static_cast<T>(u); } T narrow_cast(U u) noexcept { return static_cast<T>(u); }
struct narrowing_error : public std::exception {}; struct narrowing_error : public std::exception {};
// narrow() : a checked version of narrow_cast() that throws if the cast changed the value // narrow() : a checked version of narrow_cast() that throws if the cast changed the value