mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Valentin SherginandFacebook Github Bot
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
110 lines
2.7 KiB
C++
110 lines
2.7 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/graphics/conversions.h>
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#include <react/imagemanager/primitives.h>
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namespace facebook {
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namespace react {
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inline void fromRawValue(const RawValue &value, ImageSource &result) {
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if (value.hasType<std::string>()) {
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result = {.type = ImageSource::Type::Remote, .uri = (std::string)value};
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return;
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}
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if (value.hasType<std::unordered_map<std::string, RawValue>>()) {
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auto items = (std::unordered_map<std::string, RawValue>)value;
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result = {};
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result.type = ImageSource::Type::Remote;
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if (items.find("__packager_asset") != items.end()) {
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result.type = ImageSource::Type::Local;
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}
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if (items.find("width") != items.end() &&
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items.find("height") != items.end()) {
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result.size = {(Float)items.at("width"), (Float)items.at("height")};
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}
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if (items.find("scale") != items.end()) {
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result.scale = (Float)items.at("scale");
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} else {
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result.scale = items.find("deprecated") != items.end() ? 0.0 : 1.0;
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}
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if (items.find("url") != items.end()) {
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result.uri = (std::string)items.at("url");
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}
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if (items.find("uri") != items.end()) {
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result.uri = (std::string)items.at("uri");
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}
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if (items.find("bundle") != items.end()) {
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result.bundle = (std::string)items.at("bundle");
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result.type = ImageSource::Type::Local;
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}
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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 ImageSource &value) {
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return "{uri: " + value.uri + "}";
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}
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inline void fromRawValue(const RawValue &value, ImageResizeMode &result) {
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assert(value.hasType<std::string>());
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auto stringValue = (std::string)value;
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if (stringValue == "cover") {
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result = ImageResizeMode::Cover;
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return;
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}
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if (stringValue == "contain") {
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result = ImageResizeMode::Contain;
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return;
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}
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if (stringValue == "stretch") {
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result = ImageResizeMode::Stretch;
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return;
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}
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if (stringValue == "center") {
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result = ImageResizeMode::Center;
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return;
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}
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if (stringValue == "repeat") {
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result = ImageResizeMode::Repeat;
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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 ImageResizeMode &value) {
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switch (value) {
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case ImageResizeMode::Cover:
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return "cover";
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case ImageResizeMode::Contain:
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return "contain";
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case ImageResizeMode::Stretch:
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return "stretch";
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case ImageResizeMode::Center:
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return "center";
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case ImageResizeMode::Repeat:
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return "repeat";
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}
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}
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} // namespace react
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} // namespace facebook
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