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, 4 insertions, 3 deletions

diff --git a/clang-tools-extra/cpp11-migrate/UseAuto/UseAutoActions.cpp b/clang-tools-extra/cpp11-migrate/UseAuto/UseAutoActions.cpp
index 643de63069e..2a8d5c5935d 100644
--- a/clang-tools-extra/cpp11-migrate/UseAuto/UseAutoActions.cpp
+++ b/clang-tools-extra/cpp11-migrate/UseAuto/UseAutoActions.cpp
@@ -73,7 +73,7 @@ void IteratorReplacer::run(const MatchFinder::MatchResult &Result) {
   // iterators but something to keep in mind in the future.
 
   CharSourceRange Range(TL.getSourceRange(), true);
-  Replace.insert(tooling::Replacement(SM, Range, "auto"));
+  Owner.addReplacementForCurrentTU(tooling::Replacement(SM, Range, "auto"));
   ++AcceptedChanges;
 }
 
@@ -131,8 +131,9 @@ void NewReplacer::run(const MatchFinder::MatchResult &Result) {
   for (std::vector<SourceLocation>::iterator I = StarLocations.begin(),
                                              E = StarLocations.end();
        I != E; ++I) {
-    Replace.insert(tooling::Replacement(SM, *I, 1, ""));
+    Owner.addReplacementForCurrentTU(tooling::Replacement(SM, *I, 1, ""));
   }
+
   // FIXME: There is, however, one case we can address: when the VarDecl
   // pointee is the same as the initializer, just more CV-qualified. However,
   // TypeLoc information is not reliable where CV qualifiers are concerned so
@@ -141,6 +142,6 @@ void NewReplacer::run(const MatchFinder::MatchResult &Result) {
       FirstDecl->getTypeSourceInfo()->getTypeLoc().getSourceRange(), true);
   // Space after 'auto' to handle cases where the '*' in the pointer type
   // is next to the identifier. This avoids changing 'int *p' into 'autop'.
-  Replace.insert(tooling::Replacement(SM, Range, "auto "));
+  Owner.addReplacementForCurrentTU(tooling::Replacement(SM, Range, "auto "));
   ++AcceptedChanges;
 }