e708f1c3a2
Much like AK::Result this carries either a DOM::DOMException or regular return value and will be used by DOM functions for exceptions that should be thrown.
110 lines
2.8 KiB
C++
110 lines
2.8 KiB
C++
/*
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* Copyright (c) 2021, Linus Groh <mail@linusgroh.de>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include <AK/NonnullRefPtr.h>
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#include <AK/Optional.h>
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#include <AK/RefPtr.h>
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#include <LibWeb/DOM/DOMException.h>
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namespace Web::DOM {
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template<typename ValueType>
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class ExceptionOr {
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public:
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ExceptionOr(const ValueType& result)
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: m_result(result)
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{
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}
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ExceptionOr(ValueType&& result)
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: m_result(move(result))
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{
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}
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ExceptionOr(const NonnullRefPtr<DOMException> exception)
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: m_exception(exception)
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{
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}
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ExceptionOr(ExceptionOr&& other) = default;
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ExceptionOr(const ExceptionOr& other) = default;
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~ExceptionOr() = default;
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ValueType& value()
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{
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return m_result.value();
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}
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ValueType release_value()
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{
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return m_result.release_value();
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}
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const DOMException& exception() const
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{
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return *m_exception;
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}
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bool is_exception() const
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{
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return m_exception;
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}
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private:
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Optional<ValueType> m_result;
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RefPtr<DOMException> m_exception;
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};
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template<>
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class ExceptionOr<void> {
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public:
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ExceptionOr(const NonnullRefPtr<DOMException> exception)
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: m_exception(exception)
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{
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}
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ExceptionOr() = default;
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ExceptionOr(ExceptionOr&& other) = default;
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ExceptionOr(const ExceptionOr& other) = default;
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~ExceptionOr() = default;
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const DOMException& exception() const
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{
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return *m_exception;
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}
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bool is_exception() const
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{
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return m_exception;
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}
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private:
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RefPtr<DOMException> m_exception;
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};
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}
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