[clang-refactor] Add "-Inplace" option to the commandline tool.

Summary:
Change clang-refactor default behavior to print the new code after refactoring
(instead of editing the source files), which would make it easier to use
and debug the refactoring action.

Reviewers: arphaman, ioeric

Reviewed By: arphaman

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D39092

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@316212 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 16 insertions, 6 deletions

diff --git a/tools/clang-refactor/ClangRefactor.cpp b/tools/clang-refactor/ClangRefactor.cpp
index ed9bf5ed28..523c3a6220 100644
--- a/tools/clang-refactor/ClangRefactor.cpp
+++ b/tools/clang-refactor/ClangRefactor.cpp
@@ -40,6 +40,11 @@ static cl::OptionCategory CommonRefactorOptions("Refactoring options");
 static cl::opt<bool> Verbose("v", cl::desc("Use verbose output"),
                              cl::cat(cl::GeneralCategory),
                              cl::sub(*cl::AllSubCommands));
+
+static cl::opt<bool> Inplace("i", cl::desc("Inplace edit <file>s"),
+                             cl::cat(cl::GeneralCategory),
+                             cl::sub(*cl::AllSubCommands));
+
 } // end namespace opts
 
 namespace {
@@ -436,13 +441,18 @@ public:
         return true;
       }
 
-      std::error_code EC;
-      llvm::raw_fd_ostream OS(File, EC, llvm::sys::fs::F_Text);
-      if (EC) {
-        llvm::errs() << EC.message() << "\n";
-        return true;
+      if (opts::Inplace) {
+        std::error_code EC;
+        llvm::raw_fd_ostream OS(File, EC, llvm::sys::fs::F_Text);
+        if (EC) {
+          llvm::errs() << EC.message() << "\n";
+          return true;
+        }
+        OS << *Result;
+        continue;
       }
-      OS << *Result;
+
+      llvm::outs() << *Result;
     }
     return false;
   }