=?utf-8?q?Balázs_Kéri?= <balazs.k...@ericsson.com>, =?utf-8?q?Balázs_Kéri?= <balazs.k...@ericsson.com> Message-ID: In-Reply-To: <llvm.org/llvm/llvm-project/pull/153...@github.com>
================ @@ -0,0 +1,82 @@ +//===--- CastToStructCheck.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 "CastToStructCheck.h" +#include "../utils/Matchers.h" +#include "../utils/OptionsUtils.h" +#include "clang/ASTMatchers/ASTMatchFinder.h" + +using namespace clang::ast_matchers; + +namespace clang::tidy::bugprone { + +CastToStructCheck::CastToStructCheck(StringRef Name, ClangTidyContext *Context) + : ClangTidyCheck(Name, Context), + IgnoredCasts( + utils::options::parseStringList(Options.get("IgnoredCasts", ""))) {} + +void CastToStructCheck::storeOptions(ClangTidyOptions::OptionMap &Opts) { + Options.store(Opts, "IgnoredCasts", + utils::options::serializeStringList(IgnoredCasts)); +} + +void CastToStructCheck::registerMatchers(MatchFinder *Finder) { + auto FromPointee = + qualType(hasUnqualifiedDesugaredType(type().bind("FromType")), + unless(voidType()), + unless(hasDeclaration(recordDecl(isUnion())))) + .bind("FromPointee"); + auto ToPointee = + qualType(hasUnqualifiedDesugaredType( + recordType(unless(hasDeclaration(recordDecl(isUnion())))) + .bind("ToType"))) + .bind("ToPointee"); + auto FromPtrType = qualType(pointsTo(FromPointee)).bind("FromPtr"); + auto ToPtrType = qualType(pointsTo(ToPointee)).bind("ToPtr"); + Finder->addMatcher(cStyleCastExpr(hasSourceExpression(hasType(FromPtrType)), + hasType(ToPtrType)) + .bind("CastExpr"), + this); +} + +void CastToStructCheck::check(const MatchFinder::MatchResult &Result) { + const auto *const FoundCastExpr = + Result.Nodes.getNodeAs<CStyleCastExpr>("CastExpr"); + const auto *const FromPtr = Result.Nodes.getNodeAs<QualType>("FromPtr"); + const auto *const ToPtr = Result.Nodes.getNodeAs<QualType>("ToPtr"); + const auto *const FromPointee = + Result.Nodes.getNodeAs<QualType>("FromPointee"); + const auto *const ToPointee = Result.Nodes.getNodeAs<QualType>("ToPointee"); + const auto *const FromType = Result.Nodes.getNodeAs<Type>("FromType"); + const auto *const ToType = Result.Nodes.getNodeAs<RecordType>("ToType"); + + if (FromType == ToType) + return; + + const std::string FromName = FromPointee->getAsString(); + const std::string ToName = ToPointee->getAsString(); + llvm::Regex FromR; + llvm::Regex ToR; + for (auto [Idx, Str] : llvm::enumerate(IgnoredCasts)) { + if (Idx % 2 == 0) { + FromR = llvm::Regex(Str); + } else { + ToR = llvm::Regex(Str); + if (FromR.match(FromName) && ToR.match(ToName)) + return; + } + } ---------------- PiotrZSL wrote: In utils/Matchers.hpp should be matcher that you could use directly. https://github.com/llvm/llvm-project/pull/153428 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
