================ @@ -0,0 +1,171 @@ +//===--- UnsafeCrtpCheck.cpp - clang-tidy ---------------------------------===// +// +// 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 +// +//===----------------------------------------------------------------------===// + +#include "UnsafeCrtpCheck.h" +#include "../utils/LexerUtils.h" +#include "clang/ASTMatchers/ASTMatchFinder.h" + +using namespace clang::ast_matchers; + +namespace clang::tidy::bugprone { + +namespace { +// Finds a node if it's already a bound node. +AST_MATCHER_P(CXXRecordDecl, isBoundNode, std::string, ID) { + return Builder->removeBindings( + [&](const ast_matchers::internal::BoundNodesMap &Nodes) { + const auto *BoundRecord = Nodes.getNodeAs<CXXRecordDecl>(ID); + return BoundRecord != &Node; + }); +} + +bool hasPrivateConstructor(const CXXRecordDecl *RD) { + for (auto &&Ctor : RD->ctors()) { + if (Ctor->getAccess() == AS_private) + return true; + } + + return false; +} + +bool isDerivedParameterBefriended(const CXXRecordDecl *CRTP, + const NamedDecl *Param) { + for (auto &&Friend : CRTP->friends()) { + const auto *TTPT = + dyn_cast<TemplateTypeParmType>(Friend->getFriendType()->getType()); + + if (TTPT && TTPT->getDecl() == Param) + return true; + } + + return false; +} + +bool isDerivedClassBefriended(const CXXRecordDecl *CRTP, + const CXXRecordDecl *Derived) { + for (auto &&Friend : CRTP->friends()) { + if (Friend->getFriendType()->getType()->getAsCXXRecordDecl() == Derived) + return true; + } + + return false; +} + +std::optional<const NamedDecl *> +getDerivedParameter(const ClassTemplateSpecializationDecl *CRTP, + const CXXRecordDecl *Derived) { + size_t Idx = 0; + bool Found = false; + for (auto &&TemplateArg : CRTP->getTemplateArgs().asArray()) { + if (TemplateArg.getKind() == TemplateArgument::Type && + TemplateArg.getAsType()->getAsCXXRecordDecl() == Derived) { + Found = true; + break; + } + ++Idx; + } + + if (!Found) + return std::nullopt; + + return CRTP->getSpecializedTemplate()->getTemplateParameters()->getParam(Idx); +} + +std::vector<FixItHint> hintMakeCtorPrivate(const CXXConstructorDecl *Ctor, + const std::string &OriginalAccess, + const SourceManager &SM, + const LangOptions &LangOpts) { ---------------- whisperity wrote:
As far as I know, if you have some sort of `Decl*` in your hand, you can always get to the `SourceManager` and `LangOptions` from there (though obtaining an `ASTContext`). These parameters are only needed for helper functions that deal with `Stmt`s, because those do not store this back-reference to the larger owning unit. https://github.com/llvm/llvm-project/pull/82403 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
