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//===--- ConcatNestedNamespacesCheck.h - clang-tidy--------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MODERNIZE_CONCATNESTEDNAMESPACESCHECK_H
#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MODERNIZE_CONCATNESTEDNAMESPACESCHECK_H
#include "../ClangTidyCheck.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/SmallVector.h"
namespace clang::tidy::modernize {
using NamespaceName = llvm::SmallString<40>;
class NS : public llvm::SmallVector<const NamespaceDecl *, 6> {
public:
std::optional<SourceRange>
getCleanedNamespaceFrontRange(const SourceManager &SM,
const LangOptions &LangOpts) const;
SourceRange getReplacedNamespaceFrontRange() const;
SourceRange getNamespaceBackRange(const SourceManager &SM,
const LangOptions &LangOpts) const;
SourceRange getDefaultNamespaceBackRange() const;
void appendName(NamespaceName &Str) const;
void appendCloseComment(NamespaceName &Str) const;
};
class ConcatNestedNamespacesCheck : public ClangTidyCheck {
public:
ConcatNestedNamespacesCheck(StringRef Name, ClangTidyContext *Context)
: ClangTidyCheck(Name, Context) {}
bool unsupportedNamespace(const NamespaceDecl &ND, bool IsChild) const;
bool singleNamedNamespaceChild(const NamespaceDecl &ND) const;
bool isLanguageVersionSupported(const LangOptions &LangOpts) const override {
return LangOpts.CPlusPlus17;
}
void registerMatchers(ast_matchers::MatchFinder *Finder) override;
void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
private:
using NamespaceContextVec = llvm::SmallVector<NS, 6>;
void reportDiagnostic(const SourceManager &SM, const LangOptions &LangOpts);
NamespaceContextVec Namespaces;
};
} // namespace clang::tidy::modernize
#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MODERNIZE_CONCATNESTEDNAMESPACESCHECK_H
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