clang-tools  11.0.0
UnnamedNamespaceInHeaderCheck.cpp
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1 //===--- UnnamedNamespaceInHeaderCheck.cpp - 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 
10 #include "clang/AST/ASTContext.h"
11 #include "clang/ASTMatchers/ASTMatchFinder.h"
12 #include "clang/ASTMatchers/ASTMatchers.h"
13 
14 using namespace clang::ast_matchers;
15 
16 namespace clang {
17 namespace tidy {
18 namespace google {
19 namespace build {
20 
21 UnnamedNamespaceInHeaderCheck::UnnamedNamespaceInHeaderCheck(
22  StringRef Name, ClangTidyContext *Context)
23  : ClangTidyCheck(Name, Context),
24  RawStringHeaderFileExtensions(Options.getLocalOrGlobal(
25  "HeaderFileExtensions", utils::defaultHeaderFileExtensions())) {
26  if (!utils::parseFileExtensions(RawStringHeaderFileExtensions,
27  HeaderFileExtensions,
29  llvm::errs() << "Invalid header file extension: "
30  << RawStringHeaderFileExtensions << "\n";
31  }
32 }
33 
36  Options.store(Opts, "HeaderFileExtensions", RawStringHeaderFileExtensions);
37 }
38 
40  ast_matchers::MatchFinder *Finder) {
41  Finder->addMatcher(namespaceDecl(isAnonymous()).bind("anonymousNamespace"),
42  this);
43 }
44 
46  const MatchFinder::MatchResult &Result) {
47  const auto *N = Result.Nodes.getNodeAs<NamespaceDecl>("anonymousNamespace");
48  SourceLocation Loc = N->getBeginLoc();
49  if (!Loc.isValid())
50  return;
51 
52  if (utils::isPresumedLocInHeaderFile(Loc, *Result.SourceManager,
53  HeaderFileExtensions))
54  diag(Loc, "do not use unnamed namespaces in header files");
55 }
56 
57 } // namespace build
58 } // namespace google
59 } // namespace tidy
60 } // namespace clang
clang::tidy::ClangTidyCheck
Base class for all clang-tidy checks.
Definition: ClangTidyCheck.h:114
clang::tidy::utils::isPresumedLocInHeaderFile
bool isPresumedLocInHeaderFile(SourceLocation Loc, SourceManager &SM, const FileExtensionsSet &HeaderFileExtensions)
Checks whether presumed location of Loc is in header file.
Definition: FileExtensionsUtils.cpp:23
clang::ast_matchers
Definition: AbseilMatcher.h:14
clang::tidy::utils::parseFileExtensions
bool parseFileExtensions(StringRef AllFileExtensions, FileExtensionsSet &FileExtensions, StringRef Delimiters)
Parses header file extensions from a semicolon-separated list.
Definition: FileExtensionsUtils.cpp:35
clang::tidy::utils::defaultFileExtensionDelimiters
StringRef defaultFileExtensionDelimiters()
Returns recommended default value for the list of file extension delimiters.
Definition: FileExtensionsUtils.h:48
clang::tidy::ClangTidyCheck::Options
OptionsView Options
Definition: ClangTidyCheck.h:471
clang::tidy::ClangTidyContext
Every ClangTidyCheck reports errors through a DiagnosticsEngine provided by this context.
Definition: ClangTidyDiagnosticConsumer.h:76
clang::tidy::google::build::UnnamedNamespaceInHeaderCheck::registerMatchers
void registerMatchers(ast_matchers::MatchFinder *Finder) override
Override this to register AST matchers with Finder.
Definition: UnnamedNamespaceInHeaderCheck.cpp:39
Name
static constexpr llvm::StringLiteral Name
Definition: UppercaseLiteralSuffixCheck.cpp:27
clang::tidy::google::build::UnnamedNamespaceInHeaderCheck::storeOptions
void storeOptions(ClangTidyOptions::OptionMap &Opts) override
Should store all options supported by this check with their current values or default values for opti...
Definition: UnnamedNamespaceInHeaderCheck.cpp:34
clang::tidy::ClangTidyCheck::diag
DiagnosticBuilder diag(SourceLocation Loc, StringRef Description, DiagnosticIDs::Level Level=DiagnosticIDs::Warning)
Add a diagnostic with the check's name.
Definition: ClangTidyCheck.cpp:55
clang::clangd::isAnonymous
static bool isAnonymous(const DeclarationName &N)
Definition: AST.cpp:183
clang
===– Representation.cpp - ClangDoc Representation --------—*- C++ -*-===//
Definition: ApplyReplacements.h:27
clang::tidy::google::build::UnnamedNamespaceInHeaderCheck::check
void check(const ast_matchers::MatchFinder::MatchResult &Result) override
ClangTidyChecks that register ASTMatchers should do the actual work in here.
Definition: UnnamedNamespaceInHeaderCheck.cpp:45
clang::tidy::ClangTidyCheck::OptionsView::store
void store(ClangTidyOptions::OptionMap &Options, StringRef LocalName, StringRef Value) const
Stores an option with the check-local name LocalName with string value Value to Options.
Definition: ClangTidyCheck.cpp:152
Loc
SourceLocation Loc
'#' location in the include directive
Definition: IncludeOrderCheck.cpp:37
clang::tidy::utils::defaultHeaderFileExtensions
StringRef defaultHeaderFileExtensions()
Returns recommended default value for the list of header file extensions.
Definition: FileExtensionsUtils.h:38
UnnamedNamespaceInHeaderCheck.h
clang::tidy::ClangTidyOptions::OptionMap
std::map< std::string, ClangTidyValue > OptionMap
Definition: ClangTidyOptions.h:111