From d6aede0fad127fa8eedd339e9594bf30cbd98294 Mon Sep 17 00:00:00 2001
From: Haojian Wu <hokein@google.com>
Date: Fri, 20 Oct 2017 12:37:16 +0000
Subject: [PATCH] [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
---
 test/Refactor/tool-apply-replacements.cpp | 12 +++++-------
 tools/clang-refactor/ClangRefactor.cpp    | 22 ++++++++++++++++------
 2 files changed, 21 insertions(+), 13 deletions(-)

diff --git a/test/Refactor/tool-apply-replacements.cpp b/test/Refactor/tool-apply-replacements.cpp
index 9f4595089c..59b0991dd2 100644
--- a/test/Refactor/tool-apply-replacements.cpp
+++ b/test/Refactor/tool-apply-replacements.cpp
@@ -1,10 +1,8 @@
-// RUN: rm -f %t.cp.cpp
-// RUN: cp %s %t.cp.cpp
-// RUN: clang-refactor local-rename -selection=%t.cp.cpp:9:7 -new-name=test %t.cp.cpp --
-// RUN: grep -v CHECK %t.cp.cpp | FileCheck %t.cp.cpp
-// RUN: cp %s %t.cp.cpp
-// RUN: clang-refactor local-rename -selection=%t.cp.cpp:9:7-9:15 -new-name=test %t.cp.cpp --
-// RUN: grep -v CHECK %t.cp.cpp | FileCheck %t.cp.cpp
+// RUN: sed -e 's#//.*$##' %s > %t.cpp
+// RUN: clang-refactor local-rename -selection=%t.cpp:7:7 -new-name=test %t.cpp -- | FileCheck %s
+// RUN: clang-refactor local-rename -selection=%t.cpp:7:7-7:15 -new-name=test %t.cpp -- | FileCheck %s
+// RUN: clang-refactor local-rename -i -selection=%t.cpp:7:7 -new-name=test %t.cpp --
+// RUN: FileCheck -input-file=%t.cpp %s
 
 class RenameMe {
 // CHECK: class test {
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;
   }
-- 
2.40.0