clang-tools 20.0.0git
NoInternalDependenciesCheck.cpp
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1//===--- NoInternalDependenciesCheck.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
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
19 // TODO: refactor matcher to be configurable or just match on any internal
20 // access from outside the enclosing namespace.
21
22 Finder->addMatcher(
23 nestedNameSpecifierLoc(loc(specifiesNamespace(namespaceDecl(
24 matchesName("internal"),
25 hasParent(namespaceDecl(hasName("absl")))))),
26 unless(isInAbseilFile()))
27 .bind("InternalDep"),
28 this);
29}
30
31void NoInternalDependenciesCheck::check(const MatchFinder::MatchResult &Result) {
32 const auto *InternalDependency =
33 Result.Nodes.getNodeAs<NestedNameSpecifierLoc>("InternalDep");
34
35 SourceLocation LocAtFault =
36 Result.SourceManager->getSpellingLoc(InternalDependency->getBeginLoc());
37
38 if (!LocAtFault.isValid())
39 return;
40
41 diag(LocAtFault,
42 "do not reference any 'internal' namespaces; those implementation "
43 "details are reserved to Abseil");
44}
45
46} // 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.