1da7eac87c
Remove CompilerInstance::VirtualFileSystem and CompilerInstance::setVirtualFileSystem, instead relying on the VFS in the FileManager. CompilerInstance and its clients already went to some trouble to make these match. Now they are guaranteed to match. As part of this, I added a VFS parameter (defaults to nullptr) to CompilerInstance::createFileManager, to avoid repeating construction logic in clients that just wanted to customize the VFS. https://reviews.llvm.org/D59377 llvm-svn: 357037
113 lines
3.7 KiB
C++
113 lines
3.7 KiB
C++
//===-- ModelInjector.cpp ---------------------------------------*- 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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#include "ModelInjector.h"
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#include "clang/AST/Decl.h"
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#include "clang/Basic/IdentifierTable.h"
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#include "clang/Basic/Stack.h"
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#include "clang/Frontend/ASTUnit.h"
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#include "clang/Frontend/CompilerInstance.h"
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#include "clang/Frontend/FrontendAction.h"
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#include "clang/Lex/Preprocessor.h"
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#include "clang/Serialization/ASTReader.h"
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#include "clang/StaticAnalyzer/Frontend/FrontendActions.h"
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/Support/CrashRecoveryContext.h"
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#include "llvm/Support/FileSystem.h"
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#include <utility>
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using namespace clang;
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using namespace ento;
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ModelInjector::ModelInjector(CompilerInstance &CI) : CI(CI) {}
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Stmt *ModelInjector::getBody(const FunctionDecl *D) {
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onBodySynthesis(D);
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return Bodies[D->getName()];
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}
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Stmt *ModelInjector::getBody(const ObjCMethodDecl *D) {
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onBodySynthesis(D);
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return Bodies[D->getName()];
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}
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void ModelInjector::onBodySynthesis(const NamedDecl *D) {
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// FIXME: what about overloads? Declarations can be used as keys but what
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// about file name index? Mangled names may not be suitable for that either.
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if (Bodies.count(D->getName()) != 0)
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return;
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SourceManager &SM = CI.getSourceManager();
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FileID mainFileID = SM.getMainFileID();
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AnalyzerOptionsRef analyzerOpts = CI.getAnalyzerOpts();
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llvm::StringRef modelPath = analyzerOpts->ModelPath;
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llvm::SmallString<128> fileName;
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if (!modelPath.empty())
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fileName =
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llvm::StringRef(modelPath.str() + "/" + D->getName().str() + ".model");
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else
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fileName = llvm::StringRef(D->getName().str() + ".model");
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if (!llvm::sys::fs::exists(fileName.str())) {
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Bodies[D->getName()] = nullptr;
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return;
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}
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auto Invocation = std::make_shared<CompilerInvocation>(CI.getInvocation());
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FrontendOptions &FrontendOpts = Invocation->getFrontendOpts();
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InputKind IK = InputKind::CXX; // FIXME
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FrontendOpts.Inputs.clear();
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FrontendOpts.Inputs.emplace_back(fileName, IK);
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FrontendOpts.DisableFree = true;
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Invocation->getDiagnosticOpts().VerifyDiagnostics = 0;
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// Modules are parsed by a separate CompilerInstance, so this code mimics that
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// behavior for models
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CompilerInstance Instance(CI.getPCHContainerOperations());
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Instance.setInvocation(std::move(Invocation));
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Instance.createDiagnostics(
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new ForwardingDiagnosticConsumer(CI.getDiagnosticClient()),
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/*ShouldOwnClient=*/true);
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Instance.getDiagnostics().setSourceManager(&SM);
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// The instance wants to take ownership, however DisableFree frontend option
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// is set to true to avoid double free issues
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Instance.setFileManager(&CI.getFileManager());
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Instance.setSourceManager(&SM);
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Instance.setPreprocessor(CI.getPreprocessorPtr());
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Instance.setASTContext(&CI.getASTContext());
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Instance.getPreprocessor().InitializeForModelFile();
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ParseModelFileAction parseModelFile(Bodies);
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llvm::CrashRecoveryContext CRC;
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CRC.RunSafelyOnThread([&]() { Instance.ExecuteAction(parseModelFile); },
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DesiredStackSize);
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Instance.getPreprocessor().FinalizeForModelFile();
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Instance.resetAndLeakSourceManager();
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Instance.resetAndLeakFileManager();
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Instance.resetAndLeakPreprocessor();
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// The preprocessor enters to the main file id when parsing is started, so
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// the main file id is changed to the model file during parsing and it needs
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// to be reset to the former main file id after parsing of the model file
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// is done.
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SM.setMainFileID(mainFileID);
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}
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