Introduce a PCHContainerOperations interface (NFC).

A PCHContainerOperations abstract interface provides operations for
creating and unwrapping containers for serialized ASTs (precompiled
headers and clang modules). The default implementation is
RawPCHContainerOperations, which uses a flat file for the output.

The main application for this interface will be an
ObjectFilePCHContainerOperations implementation that uses LLVM to
wrap the module in an ELF/Mach-O/COFF container to store debug info
alongside the AST.

rdar://problem/20091852

llvm-svn: 240225

1 files changed, 6 insertions, 3 deletions

diff --git a/clang/tools/libclang/CIndex.cpp b/clang/tools/libclang/CIndex.cpp
index bdefa9b71b0..2216ec61afa 100644
--- a/clang/tools/libclang/CIndex.cpp
+++ b/clang/tools/libclang/CIndex.cpp
@@ -2889,7 +2889,8 @@ enum CXErrorCode clang_createTranslationUnit2(CXIndex CIdx,
   IntrusiveRefCntPtr<DiagnosticsEngine> Diags =
       CompilerInstance::createDiagnostics(new DiagnosticOptions());
   std::unique_ptr<ASTUnit> AU = ASTUnit::LoadFromASTFile(
-      ast_filename, Diags, FileSystemOpts, CXXIdx->getOnlyLocalDecls(), None,
+      ast_filename, CXXIdx->getPCHContainerOperations(), Diags, FileSystemOpts,
+      CXXIdx->getOnlyLocalDecls(), None,
       /*CaptureDiagnostics=*/true,
       /*AllowPCHWithCompilerErrors=*/true,
       /*UserFilesAreVolatile=*/true);
@@ -3027,7 +3028,8 @@ static void clang_parseTranslationUnit_Impl(void *UserData) {
   unsigned NumErrors = Diags->getClient()->getNumErrors();
   std::unique_ptr<ASTUnit> ErrUnit;
   std::unique_ptr<ASTUnit> Unit(ASTUnit::LoadFromCommandLine(
-      Args->data(), Args->data() + Args->size(), Diags,
+      Args->data(), Args->data() + Args->size(),
+      CXXIdx->getPCHContainerOperations(), Diags,
       CXXIdx->getClangResourcesPath(), CXXIdx->getOnlyLocalDecls(),
       /*CaptureDiagnostics=*/true, *RemappedFiles.get(),
       /*RemappedFilesKeepOriginalName=*/true, PrecompilePreamble, TUKind,
@@ -3268,7 +3270,8 @@ static void clang_reparseTranslationUnit_Impl(void *UserData) {
     RemappedFiles->push_back(std::make_pair(UF.Filename, MB.release()));
   }
 
-  if (!CXXUnit->Reparse(*RemappedFiles.get()))
+  if (!CXXUnit->Reparse(CXXIdx->getPCHContainerOperations(),
+                        *RemappedFiles.get()))
     RTUI->result = CXError_Success;
   else if (isASTReadError(CXXUnit))
     RTUI->result = CXError_ASTReadError;