GT2/Ejectable/node_modules/react-native/ReactCommon/fabric/mounting/stubs/StubViewTree.cpp

112 lines
3.5 KiB
C++

/*
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
#include "StubViewTree.h"
namespace facebook {
namespace react {
StubViewTree::StubViewTree(ShadowView const &shadowView) {
auto view = std::make_shared<StubView>();
view->update(shadowView);
rootTag = shadowView.tag;
registry[shadowView.tag] = view;
}
StubView const &StubViewTree::getRootStubView() const {
return *registry.at(rootTag);
}
void StubViewTree::mutate(ShadowViewMutationList const &mutations) {
for (auto const &mutation : mutations) {
switch (mutation.type) {
case ShadowViewMutation::Create: {
assert(mutation.parentShadowView == ShadowView{});
assert(mutation.oldChildShadowView == ShadowView{});
auto stubView = std::make_shared<StubView>();
auto tag = mutation.newChildShadowView.tag;
assert(registry.find(tag) == registry.end());
registry[tag] = stubView;
break;
}
case ShadowViewMutation::Delete: {
assert(mutation.parentShadowView == ShadowView{});
assert(mutation.newChildShadowView == ShadowView{});
auto tag = mutation.oldChildShadowView.tag;
assert(registry.find(tag) != registry.end());
registry.erase(tag);
break;
}
case ShadowViewMutation::Insert: {
assert(mutation.oldChildShadowView == ShadowView{});
auto parentTag = mutation.parentShadowView.tag;
assert(registry.find(parentTag) != registry.end());
auto parentStubView = registry[parentTag];
auto childTag = mutation.newChildShadowView.tag;
assert(registry.find(childTag) != registry.end());
auto childStubView = registry[childTag];
childStubView->update(mutation.newChildShadowView);
parentStubView->children.insert(
parentStubView->children.begin() + mutation.index, childStubView);
break;
}
case ShadowViewMutation::Remove: {
assert(mutation.newChildShadowView == ShadowView{});
auto parentTag = mutation.parentShadowView.tag;
assert(registry.find(parentTag) != registry.end());
auto parentStubView = registry[parentTag];
auto childTag = mutation.oldChildShadowView.tag;
assert(registry.find(childTag) != registry.end());
auto childStubView = registry[childTag];
assert(
parentStubView->children[mutation.index]->tag ==
childStubView->tag);
parentStubView->children.erase(
parentStubView->children.begin() + mutation.index);
break;
}
case ShadowViewMutation::Update: {
assert(
mutation.newChildShadowView.tag == mutation.oldChildShadowView.tag);
assert(
registry.find(mutation.newChildShadowView.tag) != registry.end());
auto stubView = registry[mutation.newChildShadowView.tag];
stubView->update(mutation.newChildShadowView);
break;
}
}
}
}
bool operator==(StubViewTree const &lhs, StubViewTree const &rhs) {
if (lhs.registry.size() != rhs.registry.size()) {
return false;
}
for (auto const &pair : lhs.registry) {
auto &lhsStubView = *lhs.registry.at(pair.first);
auto &rhsStubView = *rhs.registry.at(pair.first);
if (lhsStubView != rhsStubView) {
return false;
}
}
return true;
}
bool operator!=(StubViewTree const &lhs, StubViewTree const &rhs) {
return !(lhs == rhs);
}
} // namespace react
} // namespace facebook