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