clang-tools 8.0.0

TemporaryObjectsCheck.cpp
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1 //===--- TemporaryObjectsCheck.cpp - clang-tidy----------------------------===//
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 #include "TemporaryObjectsCheck.h"
11 #include "../utils/OptionsUtils.h"
12 #include "clang/AST/ASTContext.h"
13 #include "clang/ASTMatchers/ASTMatchFinder.h"
14 #include "llvm/ADT/STLExtras.h"
15 #include "llvm/ADT/SmallVector.h"
16 #include <string>
17
18 using namespace clang::ast_matchers;
19
20 namespace clang {
21 namespace tidy {
22 namespace zircon {
23
24 AST_MATCHER_P(CXXRecordDecl, matchesAnyName, ArrayRef<std::string>, Names) {
25 std::string QualifiedName = Node.getQualifiedNameAsString();
26 return llvm::any_of(Names,
27 [&](StringRef Name) { return QualifiedName == Name; });
28 }
29
30 void TemporaryObjectsCheck::registerMatchers(MatchFinder *Finder) {
31 // Matcher for default constructors.
32 Finder->addMatcher(
33 cxxTemporaryObjectExpr(hasDeclaration(cxxConstructorDecl(hasParent(
34 cxxRecordDecl(matchesAnyName(Names))))))
35 .bind("temps"),
36 this);
37
38 // Matcher for user-defined constructors.
39 Finder->addMatcher(
40 cxxConstructExpr(hasParent(cxxFunctionalCastExpr()),
41 hasDeclaration(cxxConstructorDecl(
42 hasParent(cxxRecordDecl(matchesAnyName(Names))))))
43 .bind("temps"),
44 this);
45 }
46
47 void TemporaryObjectsCheck::check(const MatchFinder::MatchResult &Result) {
48 if (const auto *D = Result.Nodes.getNodeAs<CXXConstructExpr>("temps"))
49 diag(D->getLocation(),
50 "creating a temporary object of type %q0 is prohibited")
51 << D->getConstructor()->getParent();
52 }
53
54 void TemporaryObjectsCheck::storeOptions(ClangTidyOptions::OptionMap &Opts) {
55 Options.store(Opts, "Names", utils::options::serializeStringList(Names));
56 }
57
58 } // namespace zircon
59 } // namespace tidy
60 } // namespace clang
clang::ast_matchers
Definition: AbseilMatcher.h:15
clang::tidy::utils::options::serializeStringList
std::string serializeStringList(ArrayRef< std::string > Strings)
Serialize a sequence of names that can be parsed by parseStringList.
Definition: OptionsUtils.cpp:31
TemporaryObjectsCheck.h
Name
static constexpr llvm::StringLiteral Name
Definition: UppercaseLiteralSuffixCheck.cpp:28
clang::tidy::ClangTidyOptions::OptionMap
std::map< std::string, std::string > OptionMap
Definition: ClangTidyOptions.h:98
D
const Decl * D
Definition: XRefs.cpp:79
Result
llvm::Optional< llvm::Expected< tooling::AtomicChanges > > Result
Definition: ClangdServer.cpp:60
clang
===– Representation.cpp - ClangDoc Representation --------—*- C++ -*-===//
Definition: ChangeNamespace.cpp:18
clang::ast_matchers::AST_MATCHER_P
AST_MATCHER_P(FunctionDecl, throws, internal::Matcher< Type >, InnerMatcher)
Definition: ExceptionEscapeCheck.cpp:139