clang-tools  3.9.0
ThrowByValueCatchByReferenceCheck.h
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1 //===--- ThrowByValueCatchByReferenceCheck.h - clang-tidy--------*- 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 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MISC_THROW_BY_VALUE_CATCH_BY_REFERENCE_H
11 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MISC_THROW_BY_VALUE_CATCH_BY_REFERENCE_H
12 
13 #include "../ClangTidy.h"
14 
15 namespace clang {
16 namespace tidy {
17 namespace misc {
18 
19 ///\brief checks for locations that do not throw by value
20 // or catch by reference.
21 // The check is C++ only. It checks that all throw locations
22 // throw by value and not by pointer. Additionally it
23 // contains an option ("CheckThrowTemporaries", default value "true") that
24 // checks that thrown objects are anonymous temporaries. It is also
25 // acceptable for this check to throw string literals.
26 // This test checks that exceptions are caught by reference
27 // and not by value or pointer. It will not warn when catching
28 // pointer to char, wchar_t, char16_t or char32_t. This is
29 // due to not warning on throwing string literals.
31 public:
33  void storeOptions(ClangTidyOptions::OptionMap &Opts) override;
34  void registerMatchers(ast_matchers::MatchFinder *Finder) override;
35  void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
36 
37 private:
38  void diagnoseThrowLocations(const CXXThrowExpr *throwExpr);
39  void diagnoseCatchLocations(const CXXCatchStmt *catchStmt,
40  ASTContext &context);
41  bool isFunctionParameter(const DeclRefExpr *declRefExpr);
42  bool isCatchVariable(const DeclRefExpr *declRefExpr);
43  bool isFunctionOrCatchVar(const DeclRefExpr *declRefExpr);
44  const bool CheckAnonymousTemporaries;
45 };
46 
47 } // namespace misc
48 } // namespace tidy
49 } // namespace clang
50 
51 #endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MISC_THROW_BY_VALUE_CATCH_BY_REFERENCE_H
const std::string Name
Definition: USRFinder.cpp:140
std::unique_ptr< ast_matchers::MatchFinder > Finder
Definition: ClangTidy.cpp:210
checks for locations that do not throw by value
Base class for all clang-tidy checks.
Definition: ClangTidy.h:110
ThrowByValueCatchByReferenceCheck(StringRef Name, ClangTidyContext *Context)
std::map< std::string, std::string > OptionMap
void storeOptions(ClangTidyOptions::OptionMap &Opts) override
Should store all options supported by this check with their current values or default values for opti...
ClangTidyContext & Context
Definition: ClangTidy.cpp:93
Every ClangTidyCheck reports errors through a DiagnosticsEngine provided by this context.
void registerMatchers(ast_matchers::MatchFinder *Finder) override
Override this to register AST matchers with Finder.
void check(const ast_matchers::MatchFinder::MatchResult &Result) override
ClangTidyChecks that register ASTMatchers should do the actual work in here.
const NamedDecl * Result
Definition: USRFinder.cpp:137