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//===--- Compiler.cpp -------------------------------------------*- C++-*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===---------------------------------------------------------------------===//
#include "Compiler.h"
#include "Logger.h"
#include "clang/Basic/TargetInfo.h"
#include "clang/Lex/PreprocessorOptions.h"
#include "llvm/Support/Format.h"
#include "llvm/Support/FormatVariadic.h"
namespace clang {
namespace clangd {
void IgnoreDiagnostics::log(DiagnosticsEngine::Level DiagLevel,
const clang::Diagnostic &Info) {
SmallString<64> Message;
Info.FormatDiagnostic(Message);
SmallString<64> Location;
if (Info.hasSourceManager() && Info.getLocation().isValid()) {
auto &SourceMgr = Info.getSourceManager();
auto Loc = SourceMgr.getFileLoc(Info.getLocation());
llvm::raw_svector_ostream OS(Location);
Loc.print(OS, SourceMgr);
OS << ":";
}
clangd::log(llvm::formatv("Ignored diagnostic. {0}{1}", Location, Message));
}
void IgnoreDiagnostics::HandleDiagnostic(DiagnosticsEngine::Level DiagLevel,
const clang::Diagnostic &Info) {
IgnoreDiagnostics::log(DiagLevel, Info);
}
std::unique_ptr<CompilerInstance>
prepareCompilerInstance(std::unique_ptr<clang::CompilerInvocation> CI,
const PrecompiledPreamble *Preamble,
std::unique_ptr<llvm::MemoryBuffer> Buffer,
std::shared_ptr<PCHContainerOperations> PCHs,
IntrusiveRefCntPtr<vfs::FileSystem> VFS,
DiagnosticConsumer &DiagsClient) {
assert(VFS && "VFS is null");
assert(!CI->getPreprocessorOpts().RetainRemappedFileBuffers &&
"Setting RetainRemappedFileBuffers to true will cause a memory leak "
"of ContentsBuffer");
// NOTE: we use Buffer.get() when adding remapped files, so we have to make
// sure it will be released if no error is emitted.
if (Preamble) {
Preamble->OverridePreamble(*CI, VFS, Buffer.get());
} else {
CI->getPreprocessorOpts().addRemappedFile(
CI->getFrontendOpts().Inputs[0].getFile(), Buffer.get());
}
auto Clang = llvm::make_unique<CompilerInstance>(PCHs);
Clang->setInvocation(std::move(CI));
Clang->createDiagnostics(&DiagsClient, false);
if (auto VFSWithRemapping = createVFSFromCompilerInvocation(
Clang->getInvocation(), Clang->getDiagnostics(), VFS))
VFS = VFSWithRemapping;
Clang->setVirtualFileSystem(VFS);
Clang->setTarget(TargetInfo::CreateTargetInfo(
Clang->getDiagnostics(), Clang->getInvocation().TargetOpts));
if (!Clang->hasTarget())
return nullptr;
// RemappedFileBuffers will handle the lifetime of the Buffer pointer,
// release it.
Buffer.release();
return Clang;
}
} // namespace clangd
} // namespace clang
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