clang-tools  10.0.0
TemporaryObjectsCheck.cpp
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1 //===--- TemporaryObjectsCheck.cpp - clang-tidy----------------------------===//
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 
10 #include "../utils/OptionsUtils.h"
11 #include "clang/AST/ASTContext.h"
12 #include "clang/ASTMatchers/ASTMatchFinder.h"
13 #include "llvm/ADT/STLExtras.h"
14 #include "llvm/ADT/SmallVector.h"
15 #include <string>
16 
17 using namespace clang::ast_matchers;
18 
19 namespace clang {
20 namespace tidy {
21 namespace zircon {
22 
23 AST_MATCHER_P(CXXRecordDecl, matchesAnyName, ArrayRef<std::string>, Names) {
24  std::string QualifiedName = Node.getQualifiedNameAsString();
25  return llvm::any_of(Names,
26  [&](StringRef Name) { return QualifiedName == Name; });
27 }
28 
29 void TemporaryObjectsCheck::registerMatchers(MatchFinder *Finder) {
30  // Matcher for default constructors.
31  Finder->addMatcher(
32  cxxTemporaryObjectExpr(hasDeclaration(cxxConstructorDecl(hasParent(
33  cxxRecordDecl(matchesAnyName(Names))))))
34  .bind("temps"),
35  this);
36 
37  // Matcher for user-defined constructors.
38  Finder->addMatcher(
39  cxxConstructExpr(hasParent(cxxFunctionalCastExpr()),
40  hasDeclaration(cxxConstructorDecl(
41  hasParent(cxxRecordDecl(matchesAnyName(Names))))))
42  .bind("temps"),
43  this);
44 }
45 
46 void TemporaryObjectsCheck::check(const MatchFinder::MatchResult &Result) {
47  if (const auto *D = Result.Nodes.getNodeAs<CXXConstructExpr>("temps"))
48  diag(D->getLocation(),
49  "creating a temporary object of type %q0 is prohibited")
50  << D->getConstructor()->getParent();
51 }
52 
53 void TemporaryObjectsCheck::storeOptions(ClangTidyOptions::OptionMap &Opts) {
54  Options.store(Opts, "Names", utils::options::serializeStringList(Names));
55 }
56 
57 } // namespace zircon
58 } // namespace tidy
59 } // namespace clang
std::string serializeStringList(ArrayRef< std::string > Strings)
Serialize a sequence of names that can be parsed by parseStringList.
AST_MATCHER_P(CXXRecordDecl, matchesAnyName, ArrayRef< std::string >, Names)
static constexpr llvm::StringLiteral Name
std::map< std::string, std::string > OptionMap
===– Representation.cpp - ClangDoc Representation --------—*- C++ -*-===//