clang-tools  12.0.0git
InefficientVectorOperationCheck.h
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1 //===--- InefficientVectorOperationCheck.h - clang-tidy----------*- 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 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_PERFORMANCE_INEFFICIENT_VECTOR_OPERATION_H
10 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_PERFORMANCE_INEFFICIENT_VECTOR_OPERATION_H
11 
12 #include "../ClangTidyCheck.h"
13 
14 namespace clang {
15 namespace tidy {
16 namespace performance {
17 
18 /// Finds possible inefficient `std::vector` operations (e.g. `push_back`) in
19 /// for loops that may cause unnecessary memory reallocations.
20 ///
21 /// When EnableProto, also finds calls that add element to protobuf repeated
22 /// field without calling Reserve() first.
23 ///
24 /// For the user-facing documentation see:
25 /// http://clang.llvm.org/extra/clang-tidy/checks/performance-inefficient-vector-operation.html
27 public:
29  bool isLanguageVersionSupported(const LangOptions &LangOpts) const override{
30  return LangOpts.CPlusPlus;
31  }
32  void registerMatchers(ast_matchers::MatchFinder *Finder) override;
33  void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
34  void storeOptions(ClangTidyOptions::OptionMap &Opts) override;
35 
36 private:
37  void AddMatcher(const ast_matchers::DeclarationMatcher &TargetRecordDecl,
38  StringRef VarDeclName, StringRef VarDeclStmtName,
39  const ast_matchers::DeclarationMatcher &AppendMethodDecl,
40  StringRef AppendCallName, ast_matchers::MatchFinder *Finder);
41  const std::vector<std::string> VectorLikeClasses;
42 
43  // If true, also check inefficient operations for proto repeated fields.
44  bool EnableProto;
45 };
46 
47 } // namespace performance
48 } // namespace tidy
49 } // namespace clang
50 
51 #endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_PERFORMANCE_INEFFICIENT_VECTOR_OPERATION_H
void check(const ast_matchers::MatchFinder::MatchResult &Result) override
ClangTidyChecks that register ASTMatchers should do the actual work in here.
void storeOptions(ClangTidyOptions::OptionMap &Opts) override
Should store all options supported by this check with their current values or default values for opti...
Finds possible inefficient std::vector operations (e.g.
Base class for all clang-tidy checks.
static constexpr llvm::StringLiteral Name
InefficientVectorOperationCheck(StringRef Name, ClangTidyContext *Context)
void registerMatchers(ast_matchers::MatchFinder *Finder) override
Override this to register AST matchers with Finder.
===– Representation.cpp - ClangDoc Representation --------—*- C++ -*-===//
Every ClangTidyCheck reports errors through a DiagnosticsEngine provided by this context.
std::map< std::string, ClangTidyValue > OptionMap
bool isLanguageVersionSupported(const LangOptions &LangOpts) const override
Override this to disable registering matchers and PP callbacks if an invalid language version is bein...