clang 10.0.0git

ModelInjector.cpp
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1 //===-- ModelInjector.cpp ---------------------------------------*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 #include "ModelInjector.h"
10 #include "clang/AST/Decl.h"
11 #include "clang/Basic/IdentifierTable.h"
12 #include "clang/Basic/LangStandard.h"
13 #include "clang/Basic/Stack.h"
14 #include "clang/AST/DeclObjC.h"
15 #include "clang/Frontend/ASTUnit.h"
16 #include "clang/Frontend/CompilerInstance.h"
17 #include "clang/Frontend/FrontendAction.h"
18 #include "clang/Lex/Preprocessor.h"
19 #include "clang/Serialization/ASTReader.h"
20 #include "clang/StaticAnalyzer/Frontend/FrontendActions.h"
21 #include "llvm/ADT/STLExtras.h"
22 #include "llvm/Support/CrashRecoveryContext.h"
23 #include "llvm/Support/FileSystem.h"
24 #include <utility>
25
26 using namespace clang;
27 using namespace ento;
28
29 ModelInjector::ModelInjector(CompilerInstance &CI) : CI(CI) {}
30
31 Stmt *ModelInjector::getBody(const FunctionDecl *D) {
32 onBodySynthesis(D);
33 return Bodies[D->getName()];
34 }
35
36 Stmt *ModelInjector::getBody(const ObjCMethodDecl *D) {
37 onBodySynthesis(D);
38 return Bodies[D->getName()];
39 }
40
41 void ModelInjector::onBodySynthesis(const NamedDecl *D) {
42
43 // FIXME: what about overloads? Declarations can be used as keys but what
44 // about file name index? Mangled names may not be suitable for that either.
45 if (Bodies.count(D->getName()) != 0)
46 return;
47
48 SourceManager &SM = CI.getSourceManager();
49 FileID mainFileID = SM.getMainFileID();
50
51 AnalyzerOptionsRef analyzerOpts = CI.getAnalyzerOpts();
52 llvm::StringRef modelPath = analyzerOpts->ModelPath;
53
54 llvm::SmallString<128> fileName;
55
56 if (!modelPath.empty())
57 fileName =
58 llvm::StringRef(modelPath.str() + "/" + D->getName().str() + ".model");
59 else
60 fileName = llvm::StringRef(D->getName().str() + ".model");
61
62 if (!llvm::sys::fs::exists(fileName.str())) {
63 Bodies[D->getName()] = nullptr;
64 return;
65 }
66
67 auto Invocation = std::make_shared<CompilerInvocation>(CI.getInvocation());
68
69 FrontendOptions &FrontendOpts = Invocation->getFrontendOpts();
70 InputKind IK = Language::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
79 CompilerInstance Instance(CI.getPCHContainerOperations());
80 Instance.setInvocation(std::move(Invocation));
81 Instance.createDiagnostics(
82 new ForwardingDiagnosticConsumer(CI.getDiagnosticClient()),
83 /*ShouldOwnClient=*/true);
84
85 Instance.getDiagnostics().setSourceManager(&SM);
86
87 // The instance wants to take ownership, however DisableFree frontend option
88 // is set to true to avoid double free issues
89 Instance.setFileManager(&CI.getFileManager());
90 Instance.setSourceManager(&SM);
91 Instance.setPreprocessor(CI.getPreprocessorPtr());
92 Instance.setASTContext(&CI.getASTContext());
93
94 Instance.getPreprocessor().InitializeForModelFile();
95
96 ParseModelFileAction parseModelFile(Bodies);
97
98 llvm::CrashRecoveryContext CRC;
99
100 CRC.RunSafelyOnThread([&]() { Instance.ExecuteAction(parseModelFile); },
101 DesiredStackSize);
102
103 Instance.getPreprocessor().FinalizeForModelFile();
104
105 Instance.resetAndLeakSourceManager();
106 Instance.resetAndLeakFileManager();
107 Instance.resetAndLeakPreprocessor();
108
109 // The preprocessor enters to the main file id when parsing is started, so
110 // the main file id is changed to the model file during parsing and it needs
111 // to be reset to the former main file id after parsing of the model file
112 // is done.
113 SM.setMainFileID(mainFileID);
114 }
ento
clang::FunctionDecl
Represents a function declaration or definition.
Definition: Decl.h:1783
clang::CompilerInstance::getInvocation
CompilerInvocation & getInvocation()
Definition: CompilerInstance.h:232
clang::Stmt
Stmt - This represents one statement.
Definition: Stmt.h:66
clang::CompilerInstance::getPCHContainerOperations
std::shared_ptr< PCHContainerOperations > getPCHContainerOperations() const
Definition: CompilerInstance.h:524
ASTReader.h
DeclObjC.h
clang::CompilerInstance::getASTContext
ASTContext & getASTContext() const
Definition: CompilerInstance.h:464
clang::ObjCMethodDecl
ObjCMethodDecl - Represents an instance or class method declaration.
Definition: DeclObjC.h:138
clang::SourceManager::setMainFileID
void setMainFileID(FileID FID)
Set the file ID for the main source file.
Definition: SourceManager.h:810
clang::CompilerInstance::getPreprocessorPtr
std::shared_ptr< Preprocessor > getPreprocessorPtr()
Definition: CompilerInstance.h:449
clang::AttrSyntax::CXX
llvm::SmallString< 128 >
clang::CompilerInstance::getAnalyzerOpts
AnalyzerOptionsRef getAnalyzerOpts()
Definition: CompilerInstance.h:253
clang::ento::ParseModelFileAction
Frontend action to parse model files.
Definition: FrontendActions.h:41
CompilerInstance.h
LangStandard.h
Preprocessor.h
Defines the clang::Preprocessor interface.
ModelInjector.h
This file defines the clang::ento::ModelInjector class which implements the clang::CodeInjector inter...
IdentifierTable.h
Defines the clang::IdentifierInfo, clang::IdentifierTable, and clang::Selector interfaces.
SM
const SourceManager & SM
Definition: Format.cpp:1685
FrontendActions.h
llvm::IntrusiveRefCntPtr< AnalyzerOptions >
clang::CompilerInstance
CompilerInstance - Helper class for managing a single instance of the Clang compiler.
Definition: CompilerInstance.h:72
clang::InputKind
The kind of a file that we&#39;ve been handed as an input.
Definition: FrontendOptions.h:144
clang::ForwardingDiagnosticConsumer
Diagnostic consumer that forwards diagnostics along to an existing, already-initialized diagnostic co...
Definition: Diagnostic.h:1566
clang::DesiredStackSize
constexpr size_t DesiredStackSize
The amount of stack space that Clang would like to be provided with.
Definition: Stack.h:26
clang::FileID
An opaque identifier used by SourceManager which refers to a source file (MemoryBuffer) along with it...
Definition: SourceLocation.h:38
Decl.h
clang
Dataflow Directional Tag Classes.
Definition: CFGReachabilityAnalysis.h:21
clang::CompilerInstance::getFileManager
FileManager & getFileManager() const
Return the current file manager to the caller.
Definition: CompilerInstance.h:404
clang::SourceManager::getMainFileID
FileID getMainFileID() const
Returns the FileID of the main source file.
Definition: SourceManager.h:807
clang::CompilerInstance::getSourceManager
SourceManager & getSourceManager() const
Return the current source manager.
Definition: CompilerInstance.h:424
clang::FrontendOptions
FrontendOptions - Options for controlling the behavior of the frontend.
Definition: FrontendOptions.h:227
ASTUnit.h
clang::CompilerInstance::setInvocation
void setInvocation(std::shared_ptr< CompilerInvocation > Value)
setInvocation - Replace the current invocation.
Definition: CompilerInstance.cpp:71
clang::CompilerInstance::getDiagnosticClient
DiagnosticConsumer & getDiagnosticClient() const
Definition: CompilerInstance.h:345
clang::NamedDecl::getName
StringRef getName() const
Get the name of identifier for this declaration as a StringRef.
Definition: Decl.h:250
FrontendAction.h
Defines the clang::FrontendAction interface and various convenience abstract classes (clang::ASTFront...
Stack.h
Defines utilities for dealing with stack allocation and stack space.
clang::ento::ModelInjector::getBody
Stmt * getBody(const FunctionDecl *D) override
clang::NamedDecl
This represents a decl that may have a name.
Definition: Decl.h:223
clang::SourceManager
This class handles loading and caching of source files into memory.
Definition: SourceManager.h:596
clang::ento::ModelInjector::ModelInjector
ModelInjector(CompilerInstance &CI)
Definition: ModelInjector.cpp:29