//===--- Transformer.cpp - Transformer library implementation ---*- C++ -*-===// // // 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 "clang/Tooling/Transformer/Transformer.h" #include "clang/ASTMatchers/ASTMatchFinder.h" #include "clang/ASTMatchers/ASTMatchersInternal.h" #include "clang/Basic/SourceLocation.h" #include "clang/Tooling/Refactoring/AtomicChange.h" #include "llvm/Support/Error.h" #include #include using namespace clang; using namespace tooling; using ast_matchers::MatchFinder; void Transformer::registerMatchers(MatchFinder *MatchFinder) { for (auto &Matcher : transformer::detail::buildMatchers(Rule)) MatchFinder->addDynamicMatcher(Matcher, this); } void Transformer::run(const MatchFinder::MatchResult &Result) { if (Result.Context->getDiagnostics().hasErrorOccurred()) return; transformer::RewriteRule::Case Case = transformer::detail::findSelectedCase(Result, Rule); auto Transformations = transformer::detail::translateEdits(Result, Case.Edits); if (!Transformations) { Consumer(Transformations.takeError()); return; } if (Transformations->empty()) { // No rewrite applied (but no error encountered either). transformer::detail::getRuleMatchLoc(Result).print( llvm::errs() << "note: skipping match at loc ", *Result.SourceManager); llvm::errs() << "\n"; return; } // Record the results in the AtomicChange, anchored at the location of the // first change. AtomicChange AC(*Result.SourceManager, (*Transformations)[0].Range.getBegin()); for (const auto &T : *Transformations) { if (auto Err = AC.replace(*Result.SourceManager, T.Range, T.Replacement)) { Consumer(std::move(Err)); return; } } for (const auto &I : Case.AddedIncludes) { auto &Header = I.first; switch (I.second) { case transformer::IncludeFormat::Quoted: AC.addHeader(Header); break; case transformer::IncludeFormat::Angled: AC.addHeader((llvm::Twine("<") + Header + ">").str()); break; } } Consumer(std::move(AC)); }