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// Copyright Catch2 Authors
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE.txt or copy at
// https://www.boost.org/LICENSE_1_0.txt)
// SPDX-License-Identifier: BSL-1.0
#ifndef CATCH_MATCHERS_CONTAINER_PROPERTIES_HPP_INCLUDED
#define CATCH_MATCHERS_CONTAINER_PROPERTIES_HPP_INCLUDED
#include <catch2/matchers/catch_matchers_templated.hpp>
#include <catch2/internal/catch_container_nonmembers.hpp>
#include <catch2/internal/catch_move_and_forward.hpp>
namespace Catch {
namespace Matchers {
class IsEmptyMatcher final : public MatcherGenericBase {
public:
template <typename RangeLike>
bool match(RangeLike&& rng) const {
#if defined(CATCH_CONFIG_POLYFILL_NONMEMBER_CONTAINER_ACCESS)
using Catch::Detail::empty;
#else
using std::empty;
#endif
return empty(rng);
}
std::string describe() const override;
};
class HasSizeMatcher final : public MatcherGenericBase {
std::size_t m_target_size;
public:
explicit HasSizeMatcher(std::size_t target_size):
m_target_size(target_size)
{}
template <typename RangeLike>
bool match(RangeLike&& rng) const {
#if defined(CATCH_CONFIG_POLYFILL_NONMEMBER_CONTAINER_ACCESS)
using Catch::Detail::size;
#else
using std::size;
#endif
return size(rng) == m_target_size;
}
std::string describe() const override;
};
template <typename Matcher>
class SizeMatchesMatcher final : public MatcherGenericBase {
Matcher m_matcher;
public:
explicit SizeMatchesMatcher(Matcher m):
m_matcher(CATCH_MOVE(m))
{}
template <typename RangeLike>
bool match(RangeLike&& rng) const {
#if defined(CATCH_CONFIG_POLYFILL_NONMEMBER_CONTAINER_ACCESS)
using Catch::Detail::size;
#else
using std::size;
#endif
return m_matcher.match(size(rng));
}
std::string describe() const override {
return "size matches " + m_matcher.describe();
}
};
//! Creates a matcher that accepts empty ranges/containers
IsEmptyMatcher IsEmpty();
//! Creates a matcher that accepts ranges/containers with specific size
HasSizeMatcher SizeIs(std::size_t sz);
template <typename Matcher>
std::enable_if_t<Detail::is_matcher<Matcher>::value,
SizeMatchesMatcher<Matcher>> SizeIs(Matcher&& m) {
return SizeMatchesMatcher<Matcher>{CATCH_FORWARD(m)};
}
} // end namespace Matchers
} // end namespace Catch
#endif // CATCH_MATCHERS_CONTAINER_PROPERTIES_HPP_INCLUDED
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