1 files changed, 33 insertions, 0 deletions
diff --git a/clang/lib/AST/DeclGroup.cpp b/clang/lib/AST/DeclGroup.cpp
new file mode 100644
index 000000000000..27dbdaab6f30
--- /dev/null
+++ b/clang/lib/AST/DeclGroup.cpp
@@ -0,0 +1,33 @@
+//===- DeclGroup.cpp - Classes for representing groups of Decls -----------===//
+//
+// 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 defines the DeclGroup and DeclGroupRef classes.
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/AST/DeclGroup.h"
+#include "clang/AST/ASTContext.h"
+#include <cassert>
+#include <memory>
+
+using namespace clang;
+
+DeclGroup* DeclGroup::Create(ASTContext &C, Decl **Decls, unsigned NumDecls) {
+  assert(NumDecls > 1 && "Invalid DeclGroup");
+  unsigned Size = totalSizeToAlloc<Decl *>(NumDecls);
+  void *Mem = C.Allocate(Size, alignof(DeclGroup));
+  new (Mem) DeclGroup(NumDecls, Decls);
+  return static_cast<DeclGroup*>(Mem);
+}
+
+DeclGroup::DeclGroup(unsigned numdecls, Decl** decls) : NumDecls(numdecls) {
+  assert(numdecls > 0);
+  assert(decls);
+  std::uninitialized_copy(decls, decls + numdecls,
+                          getTrailingObjects<Decl *>());
+}