1 //===-- ModelInjector.cpp ---------------------------------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "ModelInjector.h"
11 #include "clang/AST/Decl.h"
12 #include "clang/Basic/IdentifierTable.h"
13 #include "clang/Frontend/ASTUnit.h"
14 #include "clang/Frontend/CompilerInstance.h"
15 #include "clang/Frontend/FrontendAction.h"
16 #include "clang/Lex/Preprocessor.h"
17 #include "clang/Serialization/ASTReader.h"
18 #include "clang/StaticAnalyzer/Frontend/FrontendActions.h"
19 #include "llvm/ADT/STLExtras.h"
20 #include "llvm/Support/CrashRecoveryContext.h"
21 #include "llvm/Support/FileSystem.h"
24 using namespace clang;
27 ModelInjector::ModelInjector(CompilerInstance &CI) : CI(CI) {}
29 Stmt *ModelInjector::getBody(const FunctionDecl *D) {
31 return Bodies[D->getName()];
34 Stmt *ModelInjector::getBody(const ObjCMethodDecl *D) {
36 return Bodies[D->getName()];
39 void ModelInjector::onBodySynthesis(const NamedDecl *D) {
41 // FIXME: what about overloads? Declarations can be used as keys but what
42 // about file name index? Mangled names may not be suitable for that either.
43 if (Bodies.count(D->getName()) != 0)
46 SourceManager &SM = CI.getSourceManager();
47 FileID mainFileID = SM.getMainFileID();
49 AnalyzerOptionsRef analyzerOpts = CI.getAnalyzerOpts();
50 llvm::StringRef modelPath = analyzerOpts->Config["model-path"];
52 llvm::SmallString<128> fileName;
54 if (!modelPath.empty())
56 llvm::StringRef(modelPath.str() + "/" + D->getName().str() + ".model");
58 fileName = llvm::StringRef(D->getName().str() + ".model");
60 if (!llvm::sys::fs::exists(fileName.str())) {
61 Bodies[D->getName()] = nullptr;
65 IntrusiveRefCntPtr<CompilerInvocation> Invocation(
66 new CompilerInvocation(CI.getInvocation()));
68 FrontendOptions &FrontendOpts = Invocation->getFrontendOpts();
69 InputKind IK = IK_CXX; // FIXME
70 FrontendOpts.Inputs.clear();
71 FrontendOpts.Inputs.emplace_back(fileName, IK);
72 FrontendOpts.DisableFree = true;
74 Invocation->getDiagnosticOpts().VerifyDiagnostics = 0;
76 // Modules are parsed by a separate CompilerInstance, so this code mimics that
77 // behavior for models
78 CompilerInstance Instance(CI.getPCHContainerOperations());
79 Instance.setInvocation(&*Invocation);
80 Instance.createDiagnostics(
81 new ForwardingDiagnosticConsumer(CI.getDiagnosticClient()),
82 /*ShouldOwnClient=*/true);
84 Instance.getDiagnostics().setSourceManager(&SM);
86 Instance.setVirtualFileSystem(&CI.getVirtualFileSystem());
88 // The instance wants to take ownership, however DisableFree frontend option
89 // is set to true to avoid double free issues
90 Instance.setFileManager(&CI.getFileManager());
91 Instance.setSourceManager(&SM);
92 Instance.setPreprocessor(&CI.getPreprocessor());
93 Instance.setASTContext(&CI.getASTContext());
95 Instance.getPreprocessor().InitializeForModelFile();
97 ParseModelFileAction parseModelFile(Bodies);
99 const unsigned ThreadStackSize = 8 << 20;
100 llvm::CrashRecoveryContext CRC;
102 CRC.RunSafelyOnThread([&]() { Instance.ExecuteAction(parseModelFile); },
105 Instance.getPreprocessor().FinalizeForModelFile();
107 Instance.resetAndLeakSourceManager();
108 Instance.resetAndLeakFileManager();
109 Instance.resetAndLeakPreprocessor();
111 // The preprocessor enters to the main file id when parsing is started, so
112 // the main file id is changed to the model file during parsing and it needs
113 // to be reseted to the former main file id after parsing of the model file
115 SM.setMainFileID(mainFileID);