| //===--- DeprecatedIosBaseAliasesCheck.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 "DeprecatedIosBaseAliasesCheck.h" |
| #include "clang/AST/ASTContext.h" |
| #include "clang/ASTMatchers/ASTMatchFinder.h" |
| |
| using namespace clang::ast_matchers; |
| |
| namespace clang { |
| namespace tidy { |
| namespace modernize { |
| |
| static const llvm::SmallVector<StringRef, 5> DeprecatedTypes = { |
| {"::std::ios_base::io_state"}, |
| {"::std::ios_base::open_mode"}, |
| {"::std::ios_base::seek_dir"}, |
| {"::std::ios_base::streamoff"}, |
| {"::std::ios_base::streampos"}}; |
| |
| static const llvm::StringMap<StringRef> ReplacementTypes = { |
| {"io_state", "iostate"}, |
| {"open_mode", "openmode"}, |
| {"seek_dir", "seekdir"}}; |
| |
| void DeprecatedIosBaseAliasesCheck::registerMatchers(MatchFinder *Finder) { |
| // Only register the matchers for C++; the functionality currently does not |
| // provide any benefit to other languages, despite being benign. |
| if (!getLangOpts().CPlusPlus) |
| return; |
| |
| auto IoStateDecl = typedefDecl(hasAnyName(DeprecatedTypes)).bind("TypeDecl"); |
| auto IoStateType = |
| qualType(hasDeclaration(IoStateDecl), unless(elaboratedType())); |
| |
| Finder->addMatcher(typeLoc(loc(IoStateType)).bind("TypeLoc"), this); |
| } |
| |
| void DeprecatedIosBaseAliasesCheck::check( |
| const MatchFinder::MatchResult &Result) { |
| SourceManager &SM = *Result.SourceManager; |
| |
| const auto *Typedef = Result.Nodes.getNodeAs<TypedefDecl>("TypeDecl"); |
| StringRef TypeName = Typedef->getName(); |
| bool HasReplacement = ReplacementTypes.count(TypeName); |
| |
| const auto *TL = Result.Nodes.getNodeAs<TypeLoc>("TypeLoc"); |
| SourceLocation IoStateLoc = TL->getBeginLoc(); |
| |
| // Do not generate fixits for matches depending on template arguments and |
| // macro expansions. |
| bool Fix = HasReplacement && !TL->getType()->isDependentType(); |
| if (IoStateLoc.isMacroID()) { |
| IoStateLoc = SM.getSpellingLoc(IoStateLoc); |
| Fix = false; |
| } |
| |
| SourceLocation EndLoc = IoStateLoc.getLocWithOffset(TypeName.size() - 1); |
| |
| if (HasReplacement) { |
| auto FixName = ReplacementTypes.lookup(TypeName); |
| auto Builder = diag(IoStateLoc, "'std::ios_base::%0' is deprecated; use " |
| "'std::ios_base::%1' instead") |
| << TypeName << FixName; |
| |
| if (Fix) |
| Builder << FixItHint::CreateReplacement(SourceRange(IoStateLoc, EndLoc), |
| FixName); |
| } else |
| diag(IoStateLoc, "'std::ios_base::%0' is deprecated") << TypeName; |
| } |
| |
| } // namespace modernize |
| } // namespace tidy |
| } // namespace clang |