1 files changed, 52 insertions, 0 deletions
diff --git a/gnu/llvm/clang/lib/Lex/PreprocessorLexer.cpp b/gnu/llvm/clang/lib/Lex/PreprocessorLexer.cpp
new file mode 100644
index 00000000000..5f6f4a13419
--- /dev/null
+++ b/gnu/llvm/clang/lib/Lex/PreprocessorLexer.cpp
@@ -0,0 +1,52 @@
+//===- PreprocessorLexer.cpp - C Language Family Lexer --------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+//  This file implements the PreprocessorLexer and Token interfaces.
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/Lex/PreprocessorLexer.h"
+#include "clang/Basic/SourceManager.h"
+#include "clang/Lex/LexDiagnostic.h"
+#include "clang/Lex/Preprocessor.h"
+#include "clang/Lex/Token.h"
+#include <cassert>
+
+using namespace clang;
+
+void PreprocessorLexer::anchor() {}
+
+PreprocessorLexer::PreprocessorLexer(Preprocessor *pp, FileID fid)
+    : PP(pp), FID(fid) {
+  if (pp)
+    InitialNumSLocEntries = pp->getSourceManager().local_sloc_entry_size();
+}
+
+/// After the preprocessor has parsed a \#include, lex and
+/// (potentially) macro expand the filename.
+void PreprocessorLexer::LexIncludeFilename(Token &FilenameTok) {
+  assert(ParsingFilename == false && "reentered LexIncludeFilename");
+
+  // We are now parsing a filename!
+  ParsingFilename = true;
+
+  // Lex the filename.
+  if (LexingRawMode)
+    IndirectLex(FilenameTok);
+  else
+    PP->Lex(FilenameTok);
+
+  // We should have obtained the filename now.
+  ParsingFilename = false;
+}
+
+/// getFileEntry - Return the FileEntry corresponding to this FileID.  Like
+/// getFileID(), this only works for lexers with attached preprocessors.
+const FileEntry *PreprocessorLexer::getFileEntry() const {
+  return PP->getSourceManager().getFileEntryForID(getFileID());
+}