llvm/clang-tools-extra/clangd/support/FileCache.cpp

//===--- FileCache.cpp ----------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

#include "support/FileCache.h"
#include "llvm/ADT/ScopeExit.h"
#include <optional>

namespace clang {
namespace clangd {

// Sentinel values for the Size cache key. In both cases, a successful stat of
// the file will never result in the cached value being reused.

// The cached value does not reflect the current content on disk.
static constexpr uint64_t CacheDiskMismatch = …;
// The cached value reflects that the file doesn't exist.
static constexpr uint64_t FileNotFound = …;

FileCache::FileCache(llvm::StringRef Path)
    : … { … }

void FileCache::read(
    const ThreadsafeFS &TFS, std::chrono::steady_clock::time_point FreshTime,
    llvm::function_ref<void(std::optional<llvm::StringRef>)> Parse,
    llvm::function_ref<void()> Read) const { … }

} // namespace clangd
} // namespace clang