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Change documentation based on feedback from Chandler.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203393 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Ahmed Charles 2014-03-09 12:12:23 +00:00
parent f328eebf32
commit 8445040fe4
1 changed files with 16 additions and 26 deletions
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42
include/llvm/ADT/STLExtras.h
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@ -263,40 +263,29 @@ void DeleteContainerSeconds(Container &C) {
#if LLVM_HAS_VARIADIC_TEMPLATES
/// Implement make_unique according to N3656.
// Implement make_unique according to N3656.
/// \brief Constructs a `new T()` with the given args and returns a
/// `unique_ptr<T>` which owns the object.
///
/// template<class T, class... Args> unique_ptr<T> make_unique(Args&&... args);
/// Remarks: This function shall not participate in overload resolution unless
/// T is not an array.
/// Returns: unique_ptr<T>(new T(std::forward<Args>(args)...)).
///
/// template<class T> unique_ptr<T> make_unique(size_t n);
/// Remarks: This function shall not participate in overload resolution unless
/// T is an array of unknown bound.
/// Returns: unique_ptr<T>(new typename remove_extent<T>::type[n]()).
///
/// template<class T, class... Args> unspecified make_unique(Args&&...) = delete;
/// Remarks: This function shall not participate in overload resolution unless
/// T is an array of known bound.
///
/// Use scenarios:
///
/// Single object case:
///
/// auto p0 = make_unique<int>();
///
/// auto p2 = make_unique<std::tuple<int, int>>(0, 1);
///
/// Array case:
///
/// auto p1 = make_unique<int[]>(2); // value-initializes the array with 0's.
/// Example:
///
/// auto p = make_unique<int>();
/// auto p = make_unique<std::tuple<int, int>>(0, 1);
template <class T, class... Args>
typename std::enable_if<!std::is_array<T>::value, std::unique_ptr<T>>::type
make_unique(Args &&... args) {
return std::unique_ptr<T>(new T(std::forward<Args>(args)...));
}
/// \brief Constructs a `new T[n]` with the given args and returns a
/// `unique_ptr<T[]>` which owns the object.
///
/// \param n size of the new array.
///
/// Example:
///
/// auto p = make_unique<int[]>(2); // value-initializes the array with 0's.
template <class T>
typename std::enable_if<std::is_array<T>::value && std::extent<T>::value == 0,
std::unique_ptr<T>>::type
@ -304,6 +293,7 @@ make_unique(size_t n) {
return std::unique_ptr<T>(new typename std::remove_extent<T>::type[n]());
}
/// This function isn't used and is only here to provide better compile errors.
template <class T, class... Args>
typename std::enable_if<std::extent<T>::value != 0>::type
make_unique(Args &&...) LLVM_DELETED_FUNCTION;