sapling/eden/fs/store/DiffContext.h
Genevieve Helsel 306fb6b692 pass DiffContext through TreeDiffer code path
Summary: Removes `TreeDiffer` class and passes `DiffContext` through standalone `TreeDiffer` functions as first argument as per comment on D17400466 for setup for processing gitignores in the `TreeDiffer` codepath. (also this allows for easy implementation of short circut of `future_getScmStatusBetweenRevisions` similar to D17531102)

Reviewed By: chadaustin

Differential Revision: D17717977

fbshipit-source-id: d480d212474bd80aeac9cd9bb901f97562b62b13
2019-10-11 10:46:20 -07:00

71 lines
1.9 KiB
C++

/*
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This software may be used and distributed according to the terms of the
* GNU General Public License version 2.
*/
#pragma once
#include <folly/Range.h>
namespace apache {
namespace thrift {
class ResponseChannelRequest;
}
} // namespace apache
namespace facebook {
namespace eden {
class DiffCallback;
class GitIgnoreStack;
class ObjectStore;
class UserInfo;
class TopLevelIgnores;
/**
* A helper class to store parameters for a TreeInode::diff() operation.
*
* These parameters remain fixed across all subdirectories being diffed.
* Primarily intent is to compound related diff attributes.
*
* The DiffContext must be alive for the duration of the async operation it is
* used in.
*/
class DiffContext {
public:
DiffContext(
DiffCallback* cb,
bool listIgnored,
const ObjectStore* os,
std::unique_ptr<TopLevelIgnores> topLevelIgnores,
apache::thrift::ResponseChannelRequest* FOLLY_NULLABLE request = nullptr);
DiffContext(DiffCallback* cb, const ObjectStore* os);
DiffContext(const DiffContext&) = delete;
DiffContext& operator=(const DiffContext&) = delete;
DiffContext(DiffContext&&) = delete;
DiffContext& operator=(DiffContext&&) = delete;
~DiffContext();
DiffCallback* const callback;
const ObjectStore* const store;
/**
* If listIgnored is true information about ignored files will be reported.
* If listIgnored is false then ignoredFile() will never be called on the
* callback. The diff operation may be faster with listIgnored=false, since
* it can completely omit processing ignored subdirectories.
*/
bool const listIgnored;
const GitIgnoreStack* getToplevelIgnore() const;
bool isCancelled() const;
private:
std::unique_ptr<TopLevelIgnores> topLevelIgnores_;
apache::thrift::ResponseChannelRequest* const FOLLY_NULLABLE request_;
};
} // namespace eden
} // namespace facebook