clang-tools  3.8.0
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 
18 ///\brief checks for locations that do not throw by value
19 // or catch by reference.
20 // The check is C++ only. It checks that all throw locations
21 // throw by value and not by pointer. Additionally it
22 // contains an option ("CheckThrowTemporaries", default value "true") that
23 // checks that thrown objects are anonymous temporaries. It is also
24 // acceptable for this check to throw string literals.
25 // This test checks that exceptions are caught by reference
26 // and not by value or pointer. It will not warn when catching
27 // pointer to char, wchar_t, char16_t or char32_t. This is
28 // due to not warning on throwing string literals.
30 public:
32  void storeOptions(ClangTidyOptions::OptionMap &Opts) override;
33  void registerMatchers(ast_matchers::MatchFinder *Finder) override;
34  void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
35 
36 private:
37  void diagnoseThrowLocations(const CXXThrowExpr *throwExpr);
38  void diagnoseCatchLocations(const CXXCatchStmt *catchStmt,
39  ASTContext &context);
40  bool isFunctionParameter(const DeclRefExpr *declRefExpr);
41  bool isCatchVariable(const DeclRefExpr *declRefExpr);
42  bool isFunctionOrCatchVar(const DeclRefExpr *declRefExpr);
43  const bool CheckAnonymousTemporaries;
44 };
45 
46 } // namespace tidy
47 } // namespace clang
48 
49 #endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MISC_THROW_BY_VALUE_CATCH_BY_REFERENCE_H
StringHandle Name
std::unique_ptr< ast_matchers::MatchFinder > Finder
Definition: ClangTidy.cpp:188
checks for locations that do not throw by value
void registerMatchers(ast_matchers::MatchFinder *Finder) override
Override this to register ASTMatchers with Finder.
Base class for all clang-tidy checks.
Definition: ClangTidy.h:102
void check(const ast_matchers::MatchFinder::MatchResult &Result) override
ClangTidyChecks that register ASTMatchers should do the actual work in here.
ThrowByValueCatchByReferenceCheck(StringRef Name, ClangTidyContext *Context)
std::map< std::string, std::string > OptionMap
ClangTidyContext & Context
Definition: ClangTidy.cpp:93
Every ClangTidyCheck reports errors through a DiagnosticsEngine provided by this context.
void storeOptions(ClangTidyOptions::OptionMap &Opts) override
Should store all options supported by this check with their current values or default values for opti...
const NamedDecl * Result
Definition: USRFinder.cpp:121