1 //===- AnalysisOrderChecker - Print callbacks called ------------*- 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 // This checker prints callbacks that are called during analysis.
11 // This is required to ensure that callbacks are fired in order
12 // and do not duplicate or get lost.
13 // Feel free to extend this checker with any callback you need to check.
14 //
15 //===----------------------------------------------------------------------===//
16 
17 #include "ClangSACheckers.h"
18 #include "clang/StaticAnalyzer/Core/Checker.h"
19 #include "clang/StaticAnalyzer/Core/CheckerManager.h"
20 #include "clang/StaticAnalyzer/Core/PathSensitive/CheckerContext.h"
21 
22 using namespace clang;
23 using namespace ento;
24 
25 namespace {
26 
27 class AnalysisOrderChecker : public Checker< check::PreStmt<CastExpr>,
28                                              check::PostStmt<CastExpr>,
29                                              check::PreStmt<ArraySubscriptExpr>,
30                                              check::PostStmt<ArraySubscriptExpr>> {
31   bool isCallbackEnabled(CheckerContext &C, StringRef CallbackName) const {
32     AnalyzerOptions &Opts = C.getAnalysisManager().getAnalyzerOptions();
33     return Opts.getBooleanOption("*", false, this) ||
34         Opts.getBooleanOption(CallbackName, false, this);
35   }
36 
37 public:
38   void checkPreStmt(const CastExpr *CE, CheckerContext &C) const {
39     if (isCallbackEnabled(C, "PreStmtCastExpr"))
40       llvm::errs() << "PreStmt<CastExpr> (Kind : " << CE->getCastKindName()
41                    << ")\n";
42   }
43 
44   void checkPostStmt(const CastExpr *CE, CheckerContext &C) const {
45     if (isCallbackEnabled(C, "PostStmtCastExpr"))
46       llvm::errs() << "PostStmt<CastExpr> (Kind : " << CE->getCastKindName()
47                    << ")\n";
48   }
49 
50   void checkPreStmt(const ArraySubscriptExpr *SubExpr, CheckerContext &C) const {
51     if (isCallbackEnabled(C, "PreStmtArraySubscriptExpr"))
52       llvm::errs() << "PreStmt<ArraySubscriptExpr>\n";
53   }
54 
55   void checkPostStmt(const ArraySubscriptExpr *SubExpr, CheckerContext &C) const {
56     if (isCallbackEnabled(C, "PostStmtArraySubscriptExpr"))
57       llvm::errs() << "PostStmt<ArraySubscriptExpr>\n";
58   }
59 };
60 }
61 
62 //===----------------------------------------------------------------------===//
63 // Registration.
64 //===----------------------------------------------------------------------===//
65 
66 void ento::registerAnalysisOrderChecker(CheckerManager &mgr) {
67   mgr.registerChecker<AnalysisOrderChecker>();
68 }
69