Change CXTranslationUnit to not directly cast to an ASTUnit*,

but to wrap both an ASTUnit and a "string pool"
that will be used for fast USR generation.

This requires a bunch of mechanical changes, as
there was a ton of code that assumed that CXTranslationUnit
and ASTUnit* were the same.

Along with this change, introduce CXStringBuf,
which provides an llvm::SmallVector<char> backing
for repeatedly generating CXStrings without a huge
amount of malloc() traffic.  This requires making
some changes to the representation of CXString
by renaming a few fields (but keeping the size
of the object the same).

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@119337 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 5 insertions, 2 deletions

diff --git a/include/clang-c/Index.h b/include/clang-c/Index.h
index c8af3491cd..76297f421e 100644
--- a/include/clang-c/Index.h
+++ b/include/clang-c/Index.h
@@ -63,7 +63,10 @@ typedef void *CXIndex;
 /**
  * \brief A single translation unit, which resides in an index.
  */
-typedef void *CXTranslationUnit;  /* A translation unit instance. */
+typedef struct CXTranslationUnitImpl {
+  void *TUData;
+  void *StringPool;
+} *CXTranslationUnit;  /* A translation unit instance. */
 
 /**
  * \brief Opaque pointer representing client data that will be passed through
@@ -133,7 +136,7 @@ enum CXAvailabilityKind {
  * with the string data, call \c clang_disposeString() to free the string.
  */
 typedef struct {
-  const char *Spelling;
+  void *data;
   unsigned private_flags;
 } CXString;