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fixed optional<optional<T>&> case

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This commit is contained in:
Andrzej Krzemienski
2016-05-17 00:54:09 +02:00
parent 0755ab7b4e
commit 08076e3964
7 changed files with 64 additions and 0 deletions
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12
test/testable_classes.hpp
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@ -12,6 +12,8 @@
#ifndef BOOST_OPTIONAL_TEST_TESTABKE_CLASSES_AK_07JAN2015_HPP
#define BOOST_OPTIONAL_TEST_TESTABKE_CLASSES_AK_07JAN2015_HPP
#include "boost/optional/optional.hpp"
struct ScopeGuard // no copy/move ctor/assign
{
int val_;
@ -74,13 +76,23 @@ struct has_arrow<int>
static const bool value = false;
};
template <>
struct has_arrow< boost::optional<int> >
{
static const bool value = false;
};
int& val(int& i) { return i; }
int& val(Abstract& a) { return a.val(); }
int& val(Impl& a) { return a.val(); }
int& val(ScopeGuard& g) { return g.val(); }
template <typename T> int& val(T& o) { return *o; }
const int& val(const int& i) { return i; }
const int& val(const Abstract& a) { return a.val(); }
const int& val(const Impl& a) { return a.val(); }
const int& val(const ScopeGuard& g) { return g.val(); }
template <typename T> const int& val(const T& o) { return *o; }
bool operator==(const Abstract& l, const Abstract& r) { return l.val() == r.val(); }
bool operator==(const ScopeGuard& l, const ScopeGuard& r) { return l.val() == r.val(); }