69 lines
2.3 KiB
C++
69 lines
2.3 KiB
C++
//=== Serialization/PCHContainerOperations.cpp - PCH Containers -*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines PCHContainerOperations and RawPCHContainerOperation.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Serialization/PCHContainerOperations.h"
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#include "clang/AST/ASTConsumer.h"
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#include "clang/Lex/ModuleLoader.h"
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#include "llvm/Bitstream/BitstreamReader.h"
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#include "llvm/Support/raw_ostream.h"
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#include <utility>
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using namespace clang;
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PCHContainerWriter::~PCHContainerWriter() {}
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PCHContainerReader::~PCHContainerReader() {}
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namespace {
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/// A PCHContainerGenerator that writes out the PCH to a flat file.
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class RawPCHContainerGenerator : public ASTConsumer {
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std::shared_ptr<PCHBuffer> Buffer;
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std::unique_ptr<raw_pwrite_stream> OS;
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public:
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RawPCHContainerGenerator(std::unique_ptr<llvm::raw_pwrite_stream> OS,
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std::shared_ptr<PCHBuffer> Buffer)
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: Buffer(std::move(Buffer)), OS(std::move(OS)) {}
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~RawPCHContainerGenerator() override = default;
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void HandleTranslationUnit(ASTContext &Ctx) override {
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if (Buffer->IsComplete) {
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// Make sure it hits disk now.
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*OS << Buffer->Data;
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OS->flush();
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}
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// Free the space of the temporary buffer.
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llvm::SmallVector<char, 0> Empty;
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Buffer->Data = std::move(Empty);
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}
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};
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} // anonymous namespace
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std::unique_ptr<ASTConsumer> RawPCHContainerWriter::CreatePCHContainerGenerator(
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CompilerInstance &CI, const std::string &MainFileName,
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const std::string &OutputFileName, std::unique_ptr<llvm::raw_pwrite_stream> OS,
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std::shared_ptr<PCHBuffer> Buffer) const {
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return std::make_unique<RawPCHContainerGenerator>(std::move(OS), Buffer);
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}
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StringRef
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RawPCHContainerReader::ExtractPCH(llvm::MemoryBufferRef Buffer) const {
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return Buffer.getBuffer();
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}
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PCHContainerOperations::PCHContainerOperations() {
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registerWriter(std::make_unique<RawPCHContainerWriter>());
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registerReader(std::make_unique<RawPCHContainerReader>());
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}
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