Add new code migrator support for migrating existing Objective-C code to use

the new Objective-C NSArray/NSDictionary/NSNumber literal syntax.

This introduces a new library, libEdit, which provides a new way to support
migration of code that improves on the original ARC migrator.  We now believe
that most of its functionality can be refactored into the existing libraries,
and thus this new library may shortly disappear.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@152141 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 41 insertions, 0 deletions

diff --git a/tools/libclang/ARCMigrate.cpp b/tools/libclang/ARCMigrate.cpp
index 58f8ba454d..5ee5cf6e4e 100644
--- a/tools/libclang/ARCMigrate.cpp
+++ b/tools/libclang/ARCMigrate.cpp
@@ -74,6 +74,47 @@ CXRemapping clang_getRemappings(const char *migrate_dir_path) {
   return remap.take();
 }
 
+CXRemapping clang_getRemappingsFromFileList(const char **filePaths,
+                                            unsigned numFiles) {
+  bool Logging = ::getenv("LIBCLANG_LOGGING");
+
+  OwningPtr<Remap> remap(new Remap());
+
+  if (numFiles == 0) {
+    if (Logging)
+      llvm::errs() << "clang_getRemappingsFromFileList was called with "
+                      "numFiles=0\n";
+    return remap.take();
+  }
+
+  if (!filePaths) {
+    if (Logging)
+      llvm::errs() << "clang_getRemappingsFromFileList was called with "
+                      "NULL filePaths\n";
+    return 0;
+  }
+
+  TextDiagnosticBuffer diagBuffer;
+  SmallVector<StringRef, 32> Files;
+  for (unsigned i = 0; i != numFiles; ++i)
+    Files.push_back(filePaths[i]);
+
+  bool err = arcmt::getFileRemappingsFromFileList(remap->Vec, Files,
+                                                  &diagBuffer);
+
+  if (err) {
+    if (Logging) {
+      llvm::errs() << "Error by clang_getRemappingsFromFileList\n";
+      for (TextDiagnosticBuffer::const_iterator
+             I = diagBuffer.err_begin(), E = diagBuffer.err_end(); I != E; ++I)
+        llvm::errs() << I->second << '\n';
+    }
+    return remap.take();
+  }
+
+  return remap.take();
+}
+
 unsigned clang_remap_getNumFiles(CXRemapping map) {
   return static_cast<Remap *>(map)->Vec.size();