blob: ab9b89d31f93b7f3b71a67f15a572142014ac9e3 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
|
//===--- ForRangeCopyCheck.h - clang-tidy------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_PERFORMANCE_FORRANGECOPYCHECK_H
#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_PERFORMANCE_FORRANGECOPYCHECK_H
#include "../ClangTidyCheck.h"
namespace clang::tidy::performance {
/// A check that detects copied loop variables and suggests using const
/// references.
/// For the user-facing documentation see:
/// http://clang.llvm.org/extra/clang-tidy/checks/performance/for-range-copy.html
class ForRangeCopyCheck : public ClangTidyCheck {
public:
ForRangeCopyCheck(StringRef Name, ClangTidyContext *Context);
bool isLanguageVersionSupported(const LangOptions &LangOpts) const override{
return LangOpts.CPlusPlus11;
}
void storeOptions(ClangTidyOptions::OptionMap &Opts) override;
void registerMatchers(ast_matchers::MatchFinder *Finder) override;
void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
private:
// Checks if the loop variable is a const value and expensive to copy. If so
// suggests it be converted to a const reference.
bool handleConstValueCopy(const VarDecl &LoopVar, ASTContext &Context);
// Checks if the loop variable is a non-const value and whether only
// const methods are invoked on it or whether it is only used as a const
// reference argument. If so it suggests it be made a const reference.
bool handleCopyIsOnlyConstReferenced(const VarDecl &LoopVar,
const CXXForRangeStmt &ForRange,
ASTContext &Context);
const bool WarnOnAllAutoCopies;
const std::vector<StringRef> AllowedTypes;
};
} // namespace clang::tidy::performance
#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_PERFORMANCE_FORRANGECOPYCHECK_H
|
