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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
#pragma once
#include <iosfwd>
namespace Catch {
class ITransientExpression;
class LazyExpression {
friend class AssertionHandler;
friend struct AssertionStats;
friend class RunContext;
ITransientExpression const* m_transientExpression = nullptr;
bool m_isNegated;
public:
constexpr LazyExpression( bool isNegated ):
m_isNegated(isNegated)
{}
constexpr LazyExpression(LazyExpression const& other) = default;
LazyExpression& operator = ( LazyExpression const& ) = delete;
constexpr explicit operator bool() const {
return m_transientExpression != nullptr;
}
friend auto operator << ( std::ostream& os, LazyExpression const& lazyExpr ) -> std::ostream&;
};
} // namespace Catch
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