mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Samuel Susla
dce1863bf9
Summary: Changelog: [internal] Fixes an inconsistency that `AttributedStringBox` can get into. Example of inconsitency: After `AttributedStringBox` is moved (move constructor or move assignment operator), moved from `AttributedStringBox` needs to be set into blank state. Its mode needs to be `Value`, `opaquePointer_` should be nullptr and `value_` empty AttributedString. This was not the case before as the default move constructor and operator would leave `mode_` as `OpaquePointer` but ivar representing opaquePointer would be nullptr. Reviewed By: JoshuaGross Differential Revision: D26168142 fbshipit-source-id: eed2a7c3a165ae5e1f269822c12042c6ccbd3388
86 lines
2.4 KiB
C++
86 lines
2.4 KiB
C++
/*
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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#include "AttributedStringBox.h"
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namespace facebook {
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namespace react {
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AttributedStringBox::AttributedStringBox()
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: mode_(Mode::Value),
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value_(std::make_shared<AttributedString const>(AttributedString{})),
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opaquePointer_({}){};
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AttributedStringBox::AttributedStringBox(AttributedString const &value)
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: mode_(Mode::Value),
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value_(std::make_shared<AttributedString const>(value)),
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opaquePointer_({}){};
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AttributedStringBox::AttributedStringBox(
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std::shared_ptr<void> const &opaquePointer)
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: mode_(Mode::OpaquePointer), value_({}), opaquePointer_(opaquePointer) {}
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AttributedStringBox::AttributedStringBox(AttributedStringBox &&other) noexcept
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: mode_(other.mode_),
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value_(std::move(other.value_)),
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opaquePointer_(std::move(other.opaquePointer_)) {
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other.mode_ = AttributedStringBox::Mode::Value;
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other.value_ = std::make_shared<AttributedString const>(AttributedString{});
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}
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AttributedStringBox::Mode AttributedStringBox::getMode() const {
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return mode_;
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}
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AttributedString const &AttributedStringBox::getValue() const {
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assert(mode_ == AttributedStringBox::Mode::Value);
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assert(value_);
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return *value_;
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}
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std::shared_ptr<void> AttributedStringBox::getOpaquePointer() const {
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assert(mode_ == AttributedStringBox::Mode::OpaquePointer);
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assert(opaquePointer_);
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return opaquePointer_;
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}
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AttributedStringBox &AttributedStringBox::operator=(
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AttributedStringBox &&other) {
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if (this != &other) {
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mode_ = other.mode_;
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value_ = std::move(other.value_);
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opaquePointer_ = std::move(other.opaquePointer_);
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other.mode_ = AttributedStringBox::Mode::Value;
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other.value_ = std::make_shared<AttributedString const>(AttributedString{});
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}
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return *this;
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}
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bool operator==(
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AttributedStringBox const &lhs,
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AttributedStringBox const &rhs) {
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if (lhs.getMode() != rhs.getMode()) {
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return false;
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}
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switch (lhs.getMode()) {
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case AttributedStringBox::Mode::Value:
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return lhs.getValue() == rhs.getValue();
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case AttributedStringBox::Mode::OpaquePointer:
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return lhs.getOpaquePointer() == rhs.getOpaquePointer();
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}
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}
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bool operator!=(
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AttributedStringBox const &lhs,
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AttributedStringBox const &rhs) {
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return !(lhs == rhs);
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}
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} // namespace react
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} // namespace facebook
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