clang-tools 20.0.0git
NoNamespaceCheck.cpp
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1//===--- NoNamespaceCheck.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
9#include "NoNamespaceCheck.h"
10#include "AbseilMatcher.h"
11#include "clang/AST/ASTContext.h"
12#include "clang/ASTMatchers/ASTMatchFinder.h"
13
14using namespace clang::ast_matchers;
15
16namespace clang::tidy::abseil {
17
18void NoNamespaceCheck::registerMatchers(MatchFinder *Finder) {
19 Finder->addMatcher(
20 namespaceDecl(hasName("::absl"), unless(isInAbseilFile()))
21 .bind("abslNamespace"),
22 this);
23}
24
25void NoNamespaceCheck::check(const MatchFinder::MatchResult &Result) {
26 const auto *AbslNamespaceDecl =
27 Result.Nodes.getNodeAs<NamespaceDecl>("abslNamespace");
28
29 diag(AbslNamespaceDecl->getLocation(),
30 "namespace 'absl' is reserved for implementation of the Abseil library "
31 "and should not be opened in user code");
32}
33
34} // namespace clang::tidy::abseil
DiagnosticBuilder diag(SourceLocation Loc, StringRef Description, DiagnosticIDs::Level Level=DiagnosticIDs::Warning)
Add a diagnostic with the check's name.
void check(const ast_matchers::MatchFinder::MatchResult &Result) override
ClangTidyChecks that register ASTMatchers should do the actual work in here.
void registerMatchers(ast_matchers::MatchFinder *Finder) override
Override this to register AST matchers with Finder.