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https://github.com/zhigang1992/react-native.git
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9842e39019
Summary: Our long-term plan is to completely illuminate `jsi::Value`-to-`folly::dynamic` serialization step in prop parsing process improving performance and memory pressure. At the same time, we don't want to introduce a hard dependency in application code to JSI because it exposes direct access to VM and prevents parsing some data that come *NOT* from JSVM. RawValue is an extremely light-weight (hopefully fully optimized-out) abstraction that provides limited JSON-like and C++-idiomatic interface. The current particular implementation is still using `folly::dynamic` inside, but I have fully JSI-powered one which will replace the current one right after we figure out how to deal with folly::dynamic-specific callsites. Or we can implement RawValue in a hybrid manner if a code-size implication of that will be minimal. Reviewed By: JoshuaGross, mdvacca Differential Revision: D13962466 fbshipit-source-id: e848522fd242f21e9e771773f2103f1c1d9d7f21
108 lines
2.5 KiB
C++
108 lines
2.5 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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#pragma once
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#include <folly/dynamic.h>
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#include <react/components/scrollview/primitives.h>
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namespace facebook {
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namespace react {
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inline void fromRawValue(
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const RawValue &value,
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ScrollViewSnapToAlignment &result) {
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auto string = (std::string)value;
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if (string == "start") {
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result = ScrollViewSnapToAlignment::Start;
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return;
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}
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if (string == "center") {
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result = ScrollViewSnapToAlignment::Center;
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return;
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}
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if (string == "end") {
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result = ScrollViewSnapToAlignment::End;
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return;
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}
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abort();
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}
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inline void fromRawValue(
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const RawValue &value,
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ScrollViewIndicatorStyle &result) {
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auto string = (std::string)value;
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if (string == "default") {
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result = ScrollViewIndicatorStyle::Default;
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return;
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}
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if (string == "black") {
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result = ScrollViewIndicatorStyle::Black;
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return;
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}
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if (string == "white") {
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result = ScrollViewIndicatorStyle::White;
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return;
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}
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abort();
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}
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inline void fromRawValue(
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const RawValue &value,
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ScrollViewKeyboardDismissMode &result) {
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auto string = (std::string)value;
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if (string == "none") {
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result = ScrollViewKeyboardDismissMode::None;
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return;
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}
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if (string == "on-drag") {
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result = ScrollViewKeyboardDismissMode::OnDrag;
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return;
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}
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if (string == "interactive") {
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result = ScrollViewKeyboardDismissMode::Interactive;
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return;
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}
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abort();
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}
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inline std::string toString(const ScrollViewSnapToAlignment &value) {
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switch (value) {
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case ScrollViewSnapToAlignment::Start:
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return "start";
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case ScrollViewSnapToAlignment::Center:
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return "center";
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case ScrollViewSnapToAlignment::End:
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return "end";
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}
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}
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inline std::string toString(const ScrollViewIndicatorStyle &value) {
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switch (value) {
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case ScrollViewIndicatorStyle::Default:
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return "default";
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case ScrollViewIndicatorStyle::Black:
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return "black";
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case ScrollViewIndicatorStyle::White:
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return "white";
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}
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}
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inline std::string toString(const ScrollViewKeyboardDismissMode &value) {
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switch (value) {
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case ScrollViewKeyboardDismissMode::None:
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return "none";
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case ScrollViewKeyboardDismissMode::OnDrag:
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return "on-drag";
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case ScrollViewKeyboardDismissMode::Interactive:
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return "interactive";
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}
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}
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} // namespace react
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} // namespace facebook
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