101 lines · cpp
1//===--- Refactoring.cpp - Framework for clang refactoring tools ----------===//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-exception6//7//===----------------------------------------------------------------------===//8//9// Implements tools to support refactorings.10//11//===----------------------------------------------------------------------===//12 13#include "clang/Tooling/Refactoring.h"14#include "clang/Basic/DiagnosticOptions.h"15#include "clang/Basic/FileManager.h"16#include "clang/Basic/SourceManager.h"17#include "clang/Format/Format.h"18#include "clang/Frontend/TextDiagnosticPrinter.h"19#include "clang/Lex/Lexer.h"20#include "clang/Rewrite/Core/Rewriter.h"21 22namespace clang {23namespace tooling {24 25RefactoringTool::RefactoringTool(26 const CompilationDatabase &Compilations, ArrayRef<std::string> SourcePaths,27 std::shared_ptr<PCHContainerOperations> PCHContainerOps)28 : ClangTool(Compilations, SourcePaths, std::move(PCHContainerOps)) {}29 30std::map<std::string, Replacements> &RefactoringTool::getReplacements() {31 return FileToReplaces;32}33 34int RefactoringTool::runAndSave(FrontendActionFactory *ActionFactory) {35 if (int Result = run(ActionFactory)) {36 return Result;37 }38 39 LangOptions DefaultLangOptions;40 DiagnosticOptions DiagOpts;41 TextDiagnosticPrinter DiagnosticPrinter(llvm::errs(), DiagOpts);42 DiagnosticsEngine Diagnostics(DiagnosticIDs::create(), DiagOpts,43 &DiagnosticPrinter, false);44 SourceManager Sources(Diagnostics, getFiles());45 Rewriter Rewrite(Sources, DefaultLangOptions);46 47 if (!applyAllReplacements(Rewrite)) {48 llvm::errs() << "Skipped some replacements.\n";49 }50 51 return saveRewrittenFiles(Rewrite);52}53 54bool RefactoringTool::applyAllReplacements(Rewriter &Rewrite) {55 bool Result = true;56 for (const auto &Entry : groupReplacementsByFile(57 Rewrite.getSourceMgr().getFileManager(), FileToReplaces))58 Result = tooling::applyAllReplacements(Entry.second, Rewrite) && Result;59 return Result;60}61 62int RefactoringTool::saveRewrittenFiles(Rewriter &Rewrite) {63 return Rewrite.overwriteChangedFiles() ? 1 : 0;64}65 66bool formatAndApplyAllReplacements(67 const std::map<std::string, Replacements> &FileToReplaces,68 Rewriter &Rewrite, StringRef Style) {69 SourceManager &SM = Rewrite.getSourceMgr();70 FileManager &Files = SM.getFileManager();71 72 bool Result = true;73 for (const auto &FileAndReplaces : groupReplacementsByFile(74 Rewrite.getSourceMgr().getFileManager(), FileToReplaces)) {75 const std::string &FilePath = FileAndReplaces.first;76 auto &CurReplaces = FileAndReplaces.second;77 78 FileEntryRef Entry = llvm::cantFail(Files.getFileRef(FilePath));79 FileID ID = SM.getOrCreateFileID(Entry, SrcMgr::C_User);80 StringRef Code = SM.getBufferData(ID);81 82 auto CurStyle = format::getStyle(Style, FilePath, "LLVM");83 if (!CurStyle) {84 llvm::errs() << llvm::toString(CurStyle.takeError()) << "\n";85 return false;86 }87 88 auto NewReplacements =89 format::formatReplacements(Code, CurReplaces, *CurStyle);90 if (!NewReplacements) {91 llvm::errs() << llvm::toString(NewReplacements.takeError()) << "\n";92 return false;93 }94 Result = applyAllReplacements(*NewReplacements, Rewrite) && Result;95 }96 return Result;97}98 99} // end namespace tooling100} // end namespace clang101