clang-tools 20.0.0git
ConcatNestedNamespacesCheck.h
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1//===--- ConcatNestedNamespacesCheck.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_MODERNIZE_CONCATNESTEDNAMESPACESCHECK_H
10#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MODERNIZE_CONCATNESTEDNAMESPACESCHECK_H
11
12#include "../ClangTidyCheck.h"
13#include "llvm/ADT/SmallString.h"
14#include "llvm/ADT/SmallVector.h"
15
16namespace clang::tidy::modernize {
17
18using NamespaceName = llvm::SmallString<40>;
19
20class NS : public llvm::SmallVector<const NamespaceDecl *, 6> {
21public:
22 std::optional<SourceRange>
23 getCleanedNamespaceFrontRange(const SourceManager &SM,
24 const LangOptions &LangOpts) const;
25 SourceRange getReplacedNamespaceFrontRange() const;
26 SourceRange getNamespaceBackRange(const SourceManager &SM,
27 const LangOptions &LangOpts) const;
28 SourceRange getDefaultNamespaceBackRange() const;
29 void appendName(NamespaceName &Str) const;
30 void appendCloseComment(NamespaceName &Str) const;
31};
32
34public:
36 : ClangTidyCheck(Name, Context) {}
37 bool unsupportedNamespace(const NamespaceDecl &ND, bool IsChild) const;
38 bool singleNamedNamespaceChild(const NamespaceDecl &ND) const;
39 bool isLanguageVersionSupported(const LangOptions &LangOpts) const override {
40 return LangOpts.CPlusPlus17;
41 }
42 void registerMatchers(ast_matchers::MatchFinder *Finder) override;
43 void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
44
45private:
46 using NamespaceContextVec = llvm::SmallVector<NS, 6>;
47
48 void reportDiagnostic(const SourceManager &SM, const LangOptions &LangOpts);
49 NamespaceContextVec Namespaces;
50};
51} // namespace clang::tidy::modernize
52
53#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MODERNIZE_CONCATNESTEDNAMESPACESCHECK_H
llvm::SmallString< 256U > Name
Base class for all clang-tidy checks.
Every ClangTidyCheck reports errors through a DiagnosticsEngine provided by this context.
ConcatNestedNamespacesCheck(StringRef Name, ClangTidyContext *Context)
bool unsupportedNamespace(const NamespaceDecl &ND, bool IsChild) const
void check(const ast_matchers::MatchFinder::MatchResult &Result) override
ClangTidyChecks that register ASTMatchers should do the actual work in here.
bool isLanguageVersionSupported(const LangOptions &LangOpts) const override
Override this to disable registering matchers and PP callbacks if an invalid language version is bein...
void registerMatchers(ast_matchers::MatchFinder *Finder) override
Override this to register AST matchers with Finder.
SourceRange getDefaultNamespaceBackRange() const
void appendName(NamespaceName &Str) const
SourceRange getReplacedNamespaceFrontRange() const
std::optional< SourceRange > getCleanedNamespaceFrontRange(const SourceManager &SM, const LangOptions &LangOpts) const
SourceRange getNamespaceBackRange(const SourceManager &SM, const LangOptions &LangOpts) const
void appendCloseComment(NamespaceName &Str) const
llvm::SmallString< 40 > NamespaceName