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69 lines
2.2 KiB
69 lines
2.2 KiB
4 months ago
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//===--- GeneratePCH.cpp - Sema Consumer for PCH Generation -----*- 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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//
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// This file defines the PCHGenerator, which as a SemaConsumer that generates
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// a PCH file.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Serialization/ASTWriter.h"
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#include "clang/AST/ASTConsumer.h"
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#include "clang/AST/ASTContext.h"
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#include "clang/Basic/FileManager.h"
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#include "clang/Lex/Preprocessor.h"
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#include "clang/Sema/SemaConsumer.h"
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#include "llvm/Bitcode/BitstreamWriter.h"
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#include <string>
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using namespace clang;
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PCHGenerator::PCHGenerator(
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const Preprocessor &PP, StringRef OutputFile,
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clang::Module *Module, StringRef isysroot,
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std::shared_ptr<PCHBuffer> Buffer,
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ArrayRef<llvm::IntrusiveRefCntPtr<ModuleFileExtension>> Extensions,
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bool AllowASTWithErrors, bool IncludeTimestamps)
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: PP(PP), OutputFile(OutputFile), Module(Module), isysroot(isysroot.str()),
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SemaPtr(nullptr), Buffer(Buffer), Stream(Buffer->Data),
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Writer(Stream, Extensions, IncludeTimestamps),
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AllowASTWithErrors(AllowASTWithErrors) {
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Buffer->IsComplete = false;
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}
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PCHGenerator::~PCHGenerator() {
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}
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void PCHGenerator::HandleTranslationUnit(ASTContext &Ctx) {
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// Don't create a PCH if there were fatal failures during module loading.
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if (PP.getModuleLoader().HadFatalFailure)
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return;
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bool hasErrors = PP.getDiagnostics().hasErrorOccurred();
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if (hasErrors && !AllowASTWithErrors)
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return;
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// Emit the PCH file to the Buffer.
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assert(SemaPtr && "No Sema?");
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Buffer->Signature =
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Writer.WriteAST(*SemaPtr, OutputFile, Module, isysroot,
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// For serialization we are lenient if the errors were
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// only warn-as-error kind.
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PP.getDiagnostics().hasUncompilableErrorOccurred());
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Buffer->IsComplete = true;
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}
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ASTMutationListener *PCHGenerator::GetASTMutationListener() {
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return &Writer;
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}
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ASTDeserializationListener *PCHGenerator::GetASTDeserializationListener() {
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return &Writer;
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}
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