[libclang] Introduce a new parsing option 'CXTranslationUnit_SingleFileParse' that puts preprocessor in a mode for parsing a single file only.
This is useful for parsing a single file, as a fast/inaccurate 'mode' that can still provide declarations from the file, like the classes and their methods.
llvm-svn: 305044
diff --git a/clang/lib/Frontend/ASTUnit.cpp b/clang/lib/Frontend/ASTUnit.cpp
index 3040517..bf856f0 100644
--- a/clang/lib/Frontend/ASTUnit.cpp
+++ b/clang/lib/Frontend/ASTUnit.cpp
@@ -1982,7 +1982,7 @@
unsigned PrecompilePreambleAfterNParses, TranslationUnitKind TUKind,
bool CacheCodeCompletionResults, bool IncludeBriefCommentsInCodeCompletion,
bool AllowPCHWithCompilerErrors, bool SkipFunctionBodies,
- bool UserFilesAreVolatile, bool ForSerialization,
+ bool SingleFileParse, bool UserFilesAreVolatile, bool ForSerialization,
llvm::Optional<StringRef> ModuleFormat, std::unique_ptr<ASTUnit> *ErrAST,
IntrusiveRefCntPtr<vfs::FileSystem> VFS) {
assert(Diags.get() && "no DiagnosticsEngine was provided");
@@ -2011,6 +2011,7 @@
PPOpts.RemappedFilesKeepOriginalName = RemappedFilesKeepOriginalName;
PPOpts.AllowPCHWithCompilerErrors = AllowPCHWithCompilerErrors;
PPOpts.GeneratePreamble = PrecompilePreambleAfterNParses != 0;
+ PPOpts.SingleFileParseMode = SingleFileParse;
// Override the resources path.
CI->getHeaderSearchOpts().ResourceDir = ResourceFilesPath;