mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Valentin Shergin
7186a65b13
Summary: This is another step on the journey of removing `enable_shared_from_this`. It's unclear why we used that before but it's clear now that using shared_ptr here is not necessary because all computation around happens inside the single callstack, so by definition we don't have object life-time concerns here. Changelog: [Internal] Small Fabric-specific optimization. Reviewed By: sammy-SC Differential Revision: D17973957 fbshipit-source-id: 09a65c78e22083ed21b041240307f4858379cc60
67 lines
2.2 KiB
C++
67 lines
2.2 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 "BaseTextShadowNode.h"
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#include <react/components/text/RawTextProps.h>
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#include <react/components/text/RawTextShadowNode.h>
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#include <react/components/text/TextProps.h>
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#include <react/components/text/TextShadowNode.h>
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#include <react/debug/DebugStringConvertibleItem.h>
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#include <react/mounting/ShadowView.h>
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namespace facebook {
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namespace react {
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AttributedString BaseTextShadowNode::getAttributedString(
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TextAttributes const &textAttributes,
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ShadowNode const &parentNode) {
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auto attributedString = AttributedString{};
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for (auto const &childNode : parentNode.getChildren()) {
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// RawShadowNode
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auto rawTextShadowNode =
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std::dynamic_pointer_cast<const RawTextShadowNode>(childNode);
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if (rawTextShadowNode) {
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auto fragment = AttributedString::Fragment{};
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fragment.string = rawTextShadowNode->getProps()->text;
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fragment.textAttributes = textAttributes;
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// Storing a retaining pointer to `ParagraphShadowNode` inside
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// `attributedString` causes a retain cycle (besides that fact that we
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// don't need it at all). Storing a `ShadowView` instance instead of
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// `ShadowNode` should properly fix this problem.
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fragment.parentShadowView = ShadowView(parentNode);
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attributedString.appendFragment(fragment);
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continue;
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}
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// TextShadowNode
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auto textShadowNode =
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std::dynamic_pointer_cast<const TextShadowNode>(childNode);
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if (textShadowNode) {
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auto localTextAttributes = textAttributes;
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localTextAttributes.apply(textShadowNode->getProps()->textAttributes);
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attributedString.appendAttributedString(
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textShadowNode->getAttributedString(
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localTextAttributes, *textShadowNode));
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continue;
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}
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// Any other kind of ShadowNode
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auto fragment = AttributedString::Fragment{};
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fragment.shadowView = ShadowView(*childNode);
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fragment.textAttributes = textAttributes;
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attributedString.appendFragment(fragment);
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}
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return attributedString;
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}
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} // namespace react
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} // namespace facebook
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