clang  3.7.0
ModelInjector.cpp
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1 //===-- ModelInjector.cpp ---------------------------------------*- C++ -*-===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #include "ModelInjector.h"
11 #include "clang/AST/Decl.h"
13 #include "clang/Frontend/ASTUnit.h"
16 #include "clang/Lex/Preprocessor.h"
19 #include "llvm/ADT/STLExtras.h"
20 #include "llvm/Support/CrashRecoveryContext.h"
21 #include "llvm/Support/FileSystem.h"
22 #include <string>
23 #include <utility>
24 
25 using namespace clang;
26 using namespace ento;
27 
29 
31  onBodySynthesis(D);
32  return Bodies[D->getName()];
33 }
34 
36  onBodySynthesis(D);
37  return Bodies[D->getName()];
38 }
39 
40 void ModelInjector::onBodySynthesis(const NamedDecl *D) {
41 
42  // FIXME: what about overloads? Declarations can be used as keys but what
43  // about file name index? Mangled names may not be suitable for that either.
44  if (Bodies.count(D->getName()) != 0)
45  return;
46 
48  FileID mainFileID = SM.getMainFileID();
49 
50  AnalyzerOptionsRef analyzerOpts = CI.getAnalyzerOpts();
51  llvm::StringRef modelPath = analyzerOpts->Config["model-path"];
52 
53  llvm::SmallString<128> fileName;
54 
55  if (!modelPath.empty())
56  fileName =
57  llvm::StringRef(modelPath.str() + "/" + D->getName().str() + ".model");
58  else
59  fileName = llvm::StringRef(D->getName().str() + ".model");
60 
61  if (!llvm::sys::fs::exists(fileName.str())) {
62  Bodies[D->getName()] = nullptr;
63  return;
64  }
65 
68 
69  FrontendOptions &FrontendOpts = Invocation->getFrontendOpts();
70  InputKind IK = IK_CXX; // FIXME
71  FrontendOpts.Inputs.clear();
72  FrontendOpts.Inputs.emplace_back(fileName, IK);
73  FrontendOpts.DisableFree = true;
74 
75  Invocation->getDiagnosticOpts().VerifyDiagnostics = 0;
76 
77  // Modules are parsed by a separate CompilerInstance, so this code mimics that
78  // behavior for models
80  Instance.setInvocation(&*Invocation);
81  Instance.createDiagnostics(
83  /*ShouldOwnClient=*/true);
84 
85  Instance.getDiagnostics().setSourceManager(&SM);
86 
87  Instance.setVirtualFileSystem(&CI.getVirtualFileSystem());
88 
89  // The instance wants to take ownership, however DisableFree frontend option
90  // is set to true to avoid double free issues
91  Instance.setFileManager(&CI.getFileManager());
92  Instance.setSourceManager(&SM);
93  Instance.setPreprocessor(&CI.getPreprocessor());
94  Instance.setASTContext(&CI.getASTContext());
95 
96  Instance.getPreprocessor().InitializeForModelFile();
97 
98  ParseModelFileAction parseModelFile(Bodies);
99 
100  const unsigned ThreadStackSize = 8 << 20;
101  llvm::CrashRecoveryContext CRC;
102 
103  CRC.RunSafelyOnThread([&]() { Instance.ExecuteAction(parseModelFile); },
104  ThreadStackSize);
105 
106  Instance.getPreprocessor().FinalizeForModelFile();
107 
108  Instance.resetAndLeakSourceManager();
109  Instance.resetAndLeakFileManager();
110  Instance.resetAndLeakPreprocessor();
111 
112  // The preprocessor enters to the main file id when parsing is started, so
113  // the main file id is changed to the model file during parsing and it needs
114  // to be reseted to the former main file id after parsing of the model file
115  // is done.
116  SM.setMainFileID(mainFileID);
117 }
ASTContext & getASTContext() const
CompilerInvocation & getInvocation()
StringRef getName() const
Definition: Decl.h:168
vfs::FileSystem & getVirtualFileSystem() const
SourceManager & getSourceManager() const
Return the current source manager.
void setMainFileID(FileID FID)
Set the file ID for the main source file.
DiagnosticConsumer & getDiagnosticClient() const
Preprocessor & getPreprocessor() const
Return the current preprocessor.
AnalyzerOptionsRef getAnalyzerOpts()
Stmt * getBody(const FunctionDecl *D) override
SourceManager & SM
void setInvocation(CompilerInvocation *Value)
setInvocation - Replace the current invocation.
Defines the clang::Preprocessor interface.
This file defines the clang::ento::ModelInjector class which implements the clang::CodeInjector inter...
Defines the clang::IdentifierInfo, clang::IdentifierTable, and clang::Selector interfaces.
std::vector< FrontendInputFile > Inputs
The input files and their types.
Diagnostic consumer that forwards diagnostics along to an existing, already-initialized diagnostic co...
Definition: Diagnostic.h:1376
std::shared_ptr< PCHContainerOperations > getPCHContainerOperations() const
FileID getMainFileID() const
Returns the FileID of the main source file.
An opaque identifier used by SourceManager which refers to a source file (MemoryBuffer) along with it...
FileManager & getFileManager() const
Return the current file manager to the caller.
Helper class for holding the data necessary to invoke the compiler.
FrontendOptions - Options for controlling the behavior of the frontend.
unsigned DisableFree
Disable memory freeing on exit.
Defines the clang::FrontendAction interface and various convenience abstract classes (clang::ASTFront...
This class handles loading and caching of source files into memory.
ModelInjector(CompilerInstance &CI)