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