1 //===--- Refactoring.cpp - Framework for clang refactoring tools ----------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // Implements tools to support refactorings. 11 // 12 //===----------------------------------------------------------------------===// 13 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 #include "clang/Tooling/Refactoring.h" 22 #include "llvm/Support/FileSystem.h" 23 #include "llvm/Support/Path.h" 24 #include "llvm/Support/raw_os_ostream.h" 25 26 namespace clang { 27 namespace tooling { 28 29 RefactoringTool::RefactoringTool( 30 const CompilationDatabase &Compilations, ArrayRef<std::string> SourcePaths, 31 std::shared_ptr<PCHContainerOperations> PCHContainerOps) 32 : ClangTool(Compilations, SourcePaths, PCHContainerOps) {} 33 34 Replacements &RefactoringTool::getReplacements() { return Replace; } 35 36 int RefactoringTool::runAndSave(FrontendActionFactory *ActionFactory) { 37 if (int Result = run(ActionFactory)) { 38 return Result; 39 } 40 41 LangOptions DefaultLangOptions; 42 IntrusiveRefCntPtr<DiagnosticOptions> DiagOpts = new DiagnosticOptions(); 43 TextDiagnosticPrinter DiagnosticPrinter(llvm::errs(), &*DiagOpts); 44 DiagnosticsEngine Diagnostics( 45 IntrusiveRefCntPtr<DiagnosticIDs>(new DiagnosticIDs()), 46 &*DiagOpts, &DiagnosticPrinter, false); 47 SourceManager Sources(Diagnostics, getFiles()); 48 Rewriter Rewrite(Sources, DefaultLangOptions); 49 50 if (!applyAllReplacements(Rewrite)) { 51 llvm::errs() << "Skipped some replacements.\n"; 52 } 53 54 return saveRewrittenFiles(Rewrite); 55 } 56 57 bool RefactoringTool::applyAllReplacements(Rewriter &Rewrite) { 58 return tooling::applyAllReplacements(Replace, Rewrite); 59 } 60 61 int RefactoringTool::saveRewrittenFiles(Rewriter &Rewrite) { 62 return Rewrite.overwriteChangedFiles() ? 1 : 0; 63 } 64 65 bool formatAndApplyAllReplacements(const Replacements &Replaces, 66 Rewriter &Rewrite, StringRef Style) { 67 SourceManager &SM = Rewrite.getSourceMgr(); 68 FileManager &Files = SM.getFileManager(); 69 70 auto FileToReplaces = groupReplacementsByFile(Replaces); 71 72 bool Result = true; 73 for (const auto &FileAndReplaces : FileToReplaces) { 74 const std::string &FilePath = FileAndReplaces.first; 75 auto &CurReplaces = FileAndReplaces.second; 76 77 const FileEntry *Entry = Files.getFile(FilePath); 78 FileID ID = SM.getOrCreateFileID(Entry, SrcMgr::C_User); 79 StringRef Code = SM.getBufferData(ID); 80 81 format::FormatStyle CurStyle = format::getStyle(Style, FilePath, "LLVM"); 82 auto NewReplacements = 83 format::formatReplacements(Code, CurReplaces, CurStyle); 84 if (!NewReplacements) { 85 llvm::errs() << llvm::toString(NewReplacements.takeError()) << "\n"; 86 return false; 87 } 88 Result = applyAllReplacements(*NewReplacements, Rewrite) && Result; 89 } 90 return Result; 91 } 92 93 } // end namespace tooling 94 } // end namespace clang 95