]> CyberLeo.Net >> Repos - FreeBSD/FreeBSD.git/blob - contrib/llvm-project/clang/lib/Tooling/Refactoring.cpp
Merge llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and openmp
[FreeBSD/FreeBSD.git] / contrib / llvm-project / clang / lib / Tooling / Refactoring.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-exception
6 //
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 #include "llvm/Support/Path.h"
22 #include "llvm/Support/raw_os_ostream.h"
23
24 namespace clang {
25 namespace tooling {
26
27 RefactoringTool::RefactoringTool(
28     const CompilationDatabase &Compilations, ArrayRef<std::string> SourcePaths,
29     std::shared_ptr<PCHContainerOperations> PCHContainerOps)
30     : ClangTool(Compilations, SourcePaths, std::move(PCHContainerOps)) {}
31
32 std::map<std::string, Replacements> &RefactoringTool::getReplacements() {
33   return FileToReplaces;
34 }
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   bool Result = true;
59   for (const auto &Entry : groupReplacementsByFile(
60            Rewrite.getSourceMgr().getFileManager(), FileToReplaces))
61     Result = tooling::applyAllReplacements(Entry.second, Rewrite) && Result;
62   return Result;
63 }
64
65 int RefactoringTool::saveRewrittenFiles(Rewriter &Rewrite) {
66   return Rewrite.overwriteChangedFiles() ? 1 : 0;
67 }
68
69 bool formatAndApplyAllReplacements(
70     const std::map<std::string, Replacements> &FileToReplaces,
71     Rewriter &Rewrite, StringRef Style) {
72   SourceManager &SM = Rewrite.getSourceMgr();
73   FileManager &Files = SM.getFileManager();
74
75   bool Result = true;
76   for (const auto &FileAndReplaces : groupReplacementsByFile(
77            Rewrite.getSourceMgr().getFileManager(), FileToReplaces)) {
78     const std::string &FilePath = FileAndReplaces.first;
79     auto &CurReplaces = FileAndReplaces.second;
80
81     const FileEntry *Entry = Files.getFile(FilePath);
82     FileID ID = SM.getOrCreateFileID(Entry, SrcMgr::C_User);
83     StringRef Code = SM.getBufferData(ID);
84
85     auto CurStyle = format::getStyle(Style, FilePath, "LLVM");
86     if (!CurStyle) {
87       llvm::errs() << llvm::toString(CurStyle.takeError()) << "\n";
88       return false;
89     }
90
91     auto NewReplacements =
92         format::formatReplacements(Code, CurReplaces, *CurStyle);
93     if (!NewReplacements) {
94       llvm::errs() << llvm::toString(NewReplacements.takeError()) << "\n";
95       return false;
96     }
97     Result = applyAllReplacements(*NewReplacements, Rewrite) && Result;
98   }
99   return Result;
100 }
101
102 } // end namespace tooling
103 } // end namespace clang