1 // Copyright 2022-present 650 Industries. All rights reserved.
2 
3 #include "ExpoViewProps.h"
4 #include <react/renderer/core/propsConversions.h>
5 
6 namespace react = facebook::react;
7 
8 namespace expo {
9 
10 /**
11  Borrows the props map from the source props and applies the update given in the raw props.
12  */
13 std::unordered_map<std::string, folly::dynamic> propsMapFromProps(const ExpoViewProps &sourceProps, const react::RawProps &rawProps) {
14   // Move the contents of the source props map – the source props instance will not be used anymore.
15   std::unordered_map<std::string, folly::dynamic> propsMap = std::move(sourceProps.propsMap);
16 
17   // Iterate over values in the raw props object.
18   // Note that it contains only updated props.
19   rawProps.iterateOverValues([&propsMap](react::RawPropsPropNameHash hash, const char *name, const react::RawValue &value) {
20     std::string propName(name);
21     propsMap[propName] = (folly::dynamic)value;
22   });
23 
24   return propsMap;
25 }
26 
27 ExpoViewProps::ExpoViewProps(const react::PropsParserContext &context,
28                              const ExpoViewProps &sourceProps,
29                              const react::RawProps &rawProps)
30                              : ViewProps(context, sourceProps, rawProps),
31                                propsMap(propsMapFromProps(sourceProps, rawProps)) {}
32 
33 } // namespace expo
34