2946cd7010
to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
115 lines
3.8 KiB
C++
115 lines
3.8 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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Instance.setVirtualFileSystem(&CI.getVirtualFileSystem());
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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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