60 lines
2.1 KiB
C++
60 lines
2.1 KiB
C++
//===--- Compiler.cpp -------------------------------------------*- C++-*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===---------------------------------------------------------------------===//
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#include "Compiler.h"
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#include "clang/Basic/TargetInfo.h"
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#include "clang/Lex/PreprocessorOptions.h"
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namespace clang {
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namespace clangd {
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std::unique_ptr<CompilerInstance>
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prepareCompilerInstance(std::unique_ptr<clang::CompilerInvocation> CI,
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const PrecompiledPreamble *Preamble,
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std::unique_ptr<llvm::MemoryBuffer> Buffer,
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std::shared_ptr<PCHContainerOperations> PCHs,
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IntrusiveRefCntPtr<vfs::FileSystem> VFS,
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DiagnosticConsumer &DiagsClient) {
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assert(VFS && "VFS is null");
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assert(!CI->getPreprocessorOpts().RetainRemappedFileBuffers &&
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"Setting RetainRemappedFileBuffers to true will cause a memory leak "
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"of ContentsBuffer");
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// NOTE: we use Buffer.get() when adding remapped files, so we have to make
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// sure it will be released if no error is emitted.
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if (Preamble) {
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Preamble->OverridePreamble(*CI, VFS, Buffer.get());
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} else {
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CI->getPreprocessorOpts().addRemappedFile(
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CI->getFrontendOpts().Inputs[0].getFile(), Buffer.get());
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}
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auto Clang = llvm::make_unique<CompilerInstance>(PCHs);
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Clang->setInvocation(std::move(CI));
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Clang->createDiagnostics(&DiagsClient, false);
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if (auto VFSWithRemapping = createVFSFromCompilerInvocation(
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Clang->getInvocation(), Clang->getDiagnostics(), VFS))
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VFS = VFSWithRemapping;
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Clang->setVirtualFileSystem(VFS);
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Clang->setTarget(TargetInfo::CreateTargetInfo(
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Clang->getDiagnostics(), Clang->getInvocation().TargetOpts));
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if (!Clang->hasTarget())
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return nullptr;
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// RemappedFileBuffers will handle the lifetime of the Buffer pointer,
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// release it.
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Buffer.release();
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return Clang;
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}
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} // namespace clangd
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} // namespace clang
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