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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
commit | 6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch) | |
tree | a68f146d7fa01f0134297619fbe7e33db084e0aa /security/sandbox/chromium/base/strings/nullable_string16.h | |
parent | Initial commit. (diff) | |
download | thunderbird-upstream.tar.xz thunderbird-upstream.zip |
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'security/sandbox/chromium/base/strings/nullable_string16.h')
-rw-r--r-- | security/sandbox/chromium/base/strings/nullable_string16.h | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/security/sandbox/chromium/base/strings/nullable_string16.h b/security/sandbox/chromium/base/strings/nullable_string16.h new file mode 100644 index 0000000000..abddee0f74 --- /dev/null +++ b/security/sandbox/chromium/base/strings/nullable_string16.h @@ -0,0 +1,55 @@ +// Copyright (c) 2010 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#ifndef BASE_STRINGS_NULLABLE_STRING16_H_ +#define BASE_STRINGS_NULLABLE_STRING16_H_ + +#include <iosfwd> + +#include "base/base_export.h" +#include "base/optional.h" +#include "base/strings/string16.h" +#include "base/strings/string_util.h" + +namespace base { + +// This class is a simple wrapper for string16 which also contains a null +// state. This should be used only where the difference between null and +// empty is meaningful. +class BASE_EXPORT NullableString16 { + public: + NullableString16(); + NullableString16(const NullableString16& other); + NullableString16(NullableString16&& other); + NullableString16(const string16& string, bool is_null); + explicit NullableString16(Optional<string16> optional_string16); + ~NullableString16(); + + NullableString16& operator=(const NullableString16& other); + NullableString16& operator=(NullableString16&& other); + + const string16& string() const { + return string_ ? *string_ : EmptyString16(); + } + bool is_null() const { return !string_; } + const Optional<string16>& as_optional_string16() const { return string_; } + + private: + Optional<string16> string_; +}; + +inline bool operator==(const NullableString16& a, const NullableString16& b) { + return a.as_optional_string16() == b.as_optional_string16(); +} + +inline bool operator!=(const NullableString16& a, const NullableString16& b) { + return !(a == b); +} + +BASE_EXPORT std::ostream& operator<<(std::ostream& out, + const NullableString16& value); + +} // namespace base + +#endif // BASE_STRINGS_NULLABLE_STRING16_H_ |