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//===--- ClangdUnitStore.cpp - A ClangdUnits container -----------*-C++-*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "ClangdUnitStore.h"
#include "llvm/Support/Path.h"
#include <algorithm>
using namespace clang::clangd;
using namespace clang;
std::shared_ptr<CppFile> CppFileCollection::removeIfPresent(PathRef File) {
std::lock_guard<std::mutex> Lock(Mutex);
auto It = OpenedFiles.find(File);
if (It == OpenedFiles.end())
return nullptr;
std::shared_ptr<CppFile> Result = It->second;
OpenedFiles.erase(It);
return Result;
}
CppFileCollection::RecreateResult
CppFileCollection::recreateFileIfCompileCommandChanged(
PathRef File, PathRef ResourceDir, GlobalCompilationDatabase &CDB,
bool StorePreamblesInMemory, std::shared_ptr<PCHContainerOperations> PCHs) {
auto NewCommand = getCompileCommand(CDB, File, ResourceDir);
std::lock_guard<std::mutex> Lock(Mutex);
RecreateResult Result;
auto It = OpenedFiles.find(File);
if (It == OpenedFiles.end()) {
It = OpenedFiles
.try_emplace(File, CppFile::Create(File, std::move(NewCommand),
StorePreamblesInMemory,
std::move(PCHs)))
.first;
} else if (!compileCommandsAreEqual(It->second->getCompileCommand(),
NewCommand)) {
Result.RemovedFile = std::move(It->second);
It->second = CppFile::Create(File, std::move(NewCommand),
StorePreamblesInMemory, std::move(PCHs));
}
Result.FileInCollection = It->second;
return Result;
}
tooling::CompileCommand
CppFileCollection::getCompileCommand(GlobalCompilationDatabase &CDB,
PathRef File, PathRef ResourceDir) {
llvm::Optional<tooling::CompileCommand> C = CDB.getCompileCommand(File);
if (!C) // FIXME: Suppress diagnostics? Let the user know?
C = CDB.getFallbackCommand(File);
// Inject the resource dir.
// FIXME: Don't overwrite it if it's already there.
C->CommandLine.push_back("-resource-dir=" + ResourceDir.str());
return std::move(*C);
}
bool CppFileCollection::compileCommandsAreEqual(
tooling::CompileCommand const &LHS, tooling::CompileCommand const &RHS) {
// tooling::CompileCommand.Output is ignored, it's not relevant for clangd.
return LHS.Directory == RHS.Directory &&
LHS.CommandLine.size() == RHS.CommandLine.size() &&
std::equal(LHS.CommandLine.begin(), LHS.CommandLine.end(),
RHS.CommandLine.begin());
}
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