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/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file LICENSE.rst or https://cmake.org/licensing for details. */
#include <cassert>
#include <memory>
#include <utility>
template <typename T, typename Stack>
struct cmConstStack<T, Stack>::Entry
{
Entry(std::shared_ptr<Entry const> parent, T value)
: Value(std::move(value))
, Parent(std::move(parent))
{
}
T Value;
std::shared_ptr<Entry const> Parent;
};
template <typename T, typename Stack>
cmConstStack<T, Stack>::cmConstStack() = default;
template <typename T, typename Stack>
Stack cmConstStack<T, Stack>::Push(T value) const
{
return Stack(this->TopEntry, std::move(value));
}
template <typename T, typename Stack>
Stack cmConstStack<T, Stack>::Pop() const
{
assert(this->TopEntry);
return Stack(this->TopEntry->Parent);
}
template <typename T, typename Stack>
T const& cmConstStack<T, Stack>::Top() const
{
assert(this->TopEntry);
return this->TopEntry->Value;
}
template <typename T, typename Stack>
bool cmConstStack<T, Stack>::Empty() const
{
return !this->TopEntry;
}
template <typename T, typename Stack>
cmConstStack<T, Stack>::cmConstStack(std::shared_ptr<Entry const> parent,
T value)
: TopEntry(
std::make_shared<Entry const>(std::move(parent), std::move(value)))
{
}
template <typename T, typename Stack>
cmConstStack<T, Stack>::cmConstStack(std::shared_ptr<Entry const> top)
: TopEntry(std::move(top))
{
}
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