cpp11-migrate: Refactor for driver model of operation

Re-commit of r189691 and r189689 now with a proper autoconf fix.

Massive simplification of how replacements and file overrides are
handled by the migrator:
* Sources and headers are all treated the same.
* All replacements for a given translation unit are stored in the same
  TranslationUnitReplacements structure.
* Change tracking is updated only from main file; no need for
  propagating "is tracking" flag around.
* Transform base class no longer responsible for applying replacements.
  They are simply stored and main() looks after deduplication and
  application.
* Renamed -yaml-only to -serialize-replacements. Same restrictions apply:
  Can only request one transform. New restriction: formatting cannot also
  be turned on since it's basically a transform.
* If -serialize-replacements is requested, changes to files will not be
  applied on disk.
* Changed behaviour of function generating names for serialized
  replacements: Only the main source file goes into the name of the file
  since a file may contain changes for multiple different files.
* Updated HeaderReplacements LIT test for new serialization behaviour.
  * Replaced old test that ensures replacements are not serialized if
    -serialize-replacements is not provided. New version ensures changes
    are made directly to all files in the translation unit.
* Updated unit tests.
  * Due to major simplification of structures in FileOverrides.h, the
    FileOverridesTest is quite a bit simpler now.

llvm-svn: 189798

1 files changed, 31 insertions, 0 deletions

diff --git a/clang-tools-extra/cpp11-migrate/Core/Refactoring.h b/clang-tools-extra/cpp11-migrate/Core/Refactoring.h
new file mode 100644
index 00000000000..a15634a3704
--- /dev/null
+++ b/clang-tools-extra/cpp11-migrate/Core/Refactoring.h
@@ -0,0 +1,31 @@
+//===-- Core/Refactoring.h - Stand-in for Tooling/Refactoring.h -*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// \brief This file is meant to be used instead of clang/Tooling/Refactoring.h
+/// until such time as clang::tooling::Replacements is re-implemented as a
+/// vector instead of a set.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef CPP11_MIGRATE_REPLACEMENTS_VEC_H
+#define CPP11_MIGRATE_REPLACEMENTS_VEC_H
+
+#include "clang/Tooling/Refactoring.h"
+
+// FIXME: Remove this file when clang::tooling::Replacements becomes a vector
+// instead of a set.
+
+namespace clang {
+namespace tooling {
+typedef std::vector<clang::tooling::Replacement> ReplacementsVec;
+}
+}
+
+#endif // CPP11_MIGRATE_REPLACEMENTS_VEC_H