/* * Copyright 2017 Google * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #import "Firestore/Source/API/FIRDocumentChange+Internal.h" #import "Firestore/Source/API/FIRDocumentSnapshot+Internal.h" #include "Firestore/core/src/api/document_change.h" #include "Firestore/core/src/util/hard_assert.h" using firebase::firestore::api::DocumentChange; NS_ASSUME_NONNULL_BEGIN namespace { /** * Converts from C++ document change indexes to Objective-C document change * indexes. Objective-C's NSNotFound is signed NSIntegerMax, not unsigned -1. */ constexpr NSUInteger MakeIndex(size_t index) { return index == DocumentChange::npos ? NSNotFound : index; } } // namespace @implementation FIRDocumentChange { DocumentChange _documentChange; } - (instancetype)initWithDocumentChange:(DocumentChange &&)documentChange { if (self = [super init]) { _documentChange = std::move(documentChange); } return self; } - (BOOL)isEqual:(nullable id)other { if (other == self) return YES; if (![other isKindOfClass:[FIRDocumentChange class]]) return NO; FIRDocumentChange *change = (FIRDocumentChange *)other; return _documentChange == change->_documentChange; } - (NSUInteger)hash { return _documentChange.Hash(); } - (FIRDocumentChangeType)type { switch (_documentChange.type()) { case DocumentChange::Type::Added: return FIRDocumentChangeTypeAdded; case DocumentChange::Type::Modified: return FIRDocumentChangeTypeModified; case DocumentChange::Type::Removed: return FIRDocumentChangeTypeRemoved; } HARD_FAIL("Unknown DocumentChange::Type: %s", _documentChange.type()); } - (FIRQueryDocumentSnapshot *)document { return [[FIRQueryDocumentSnapshot alloc] initWithSnapshot:_documentChange.document()]; } - (NSUInteger)oldIndex { return MakeIndex(_documentChange.old_index()); } - (NSUInteger)newIndex { return MakeIndex(_documentChange.new_index()); } @end NS_ASSUME_NONNULL_END