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| -rw-r--r-- | Userland/Libraries/LibWeb/DOM/ExceptionOr.h | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/Userland/Libraries/LibWeb/DOM/ExceptionOr.h b/Userland/Libraries/LibWeb/DOM/ExceptionOr.h new file mode 100644 index 0000000000..be0382a498 --- /dev/null +++ b/Userland/Libraries/LibWeb/DOM/ExceptionOr.h @@ -0,0 +1,110 @@ +/* + * Copyright (c) 2021, Linus Groh <mail@linusgroh.de> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#pragma once + +#include <AK/NonnullRefPtr.h> +#include <AK/Optional.h> +#include <AK/RefPtr.h> +#include <LibWeb/DOM/DOMException.h> + +namespace Web::DOM { + +template<typename ValueType> +class ExceptionOr { +public: + ExceptionOr(const ValueType& result) + : m_result(result) + { + } + + ExceptionOr(ValueType&& result) + : m_result(move(result)) + { + } + + ExceptionOr(const NonnullRefPtr<DOMException> exception) + : m_exception(exception) + { + } + + ExceptionOr(ExceptionOr&& other) = default; + ExceptionOr(const ExceptionOr& other) = default; + ~ExceptionOr() = default; + + ValueType& value() + { + return m_result.value(); + } + + ValueType release_value() + { + return m_result.release_value(); + } + + const DOMException& exception() const + { + return *m_exception; + } + + bool is_exception() const + { + return m_exception; + } + +private: + Optional<ValueType> m_result; + RefPtr<DOMException> m_exception; +}; + +template<> +class ExceptionOr<void> { +public: + ExceptionOr(const NonnullRefPtr<DOMException> exception) + : m_exception(exception) + { + } + + ExceptionOr() = default; + ExceptionOr(ExceptionOr&& other) = default; + ExceptionOr(const ExceptionOr& other) = default; + ~ExceptionOr() = default; + + const DOMException& exception() const + { + return *m_exception; + } + + bool is_exception() const + { + return m_exception; + } + +private: + RefPtr<DOMException> m_exception; +}; + +} |