1 files changed, 90 insertions, 0 deletions
diff --git a/extern/ceres/include/ceres/internal/memory.h b/extern/ceres/include/ceres/internal/memory.h
new file mode 100644
index 00000000000..45c5b67c353
--- /dev/null
+++ b/extern/ceres/include/ceres/internal/memory.h
@@ -0,0 +1,90 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// File: memory.h
+// -----------------------------------------------------------------------------
+//
+// This header file contains utility functions for managing the creation and
+// conversion of smart pointers. This file is an extension to the C++
+// standard <memory> library header file.
+
+#ifndef CERES_PUBLIC_INTERNAL_MEMORY_H_
+#define CERES_PUBLIC_INTERNAL_MEMORY_H_
+
+#include <memory>
+
+#ifdef CERES_HAVE_EXCEPTIONS
+#define CERES_INTERNAL_TRY try
+#define CERES_INTERNAL_CATCH_ANY catch (...)
+#define CERES_INTERNAL_RETHROW \
+  do {                         \
+    throw;                     \
+  } while (false)
+#else  // CERES_HAVE_EXCEPTIONS
+#define CERES_INTERNAL_TRY if (true)
+#define CERES_INTERNAL_CATCH_ANY else if (false)
+#define CERES_INTERNAL_RETHROW \
+  do {                         \
+  } while (false)
+#endif  // CERES_HAVE_EXCEPTIONS
+
+namespace ceres {
+namespace internal {
+
+template <typename Allocator, typename Iterator, typename... Args>
+void ConstructRange(Allocator& alloc,
+                    Iterator first,
+                    Iterator last,
+                    const Args&... args) {
+  for (Iterator cur = first; cur != last; ++cur) {
+    CERES_INTERNAL_TRY {
+      std::allocator_traits<Allocator>::construct(
+          alloc, std::addressof(*cur), args...);
+    }
+    CERES_INTERNAL_CATCH_ANY {
+      while (cur != first) {
+        --cur;
+        std::allocator_traits<Allocator>::destroy(alloc, std::addressof(*cur));
+      }
+      CERES_INTERNAL_RETHROW;
+    }
+  }
+}
+
+template <typename Allocator, typename Iterator, typename InputIterator>
+void CopyRange(Allocator& alloc,
+               Iterator destination,
+               InputIterator first,
+               InputIterator last) {
+  for (Iterator cur = destination; first != last;
+       static_cast<void>(++cur), static_cast<void>(++first)) {
+    CERES_INTERNAL_TRY {
+      std::allocator_traits<Allocator>::construct(
+          alloc, std::addressof(*cur), *first);
+    }
+    CERES_INTERNAL_CATCH_ANY {
+      while (cur != destination) {
+        --cur;
+        std::allocator_traits<Allocator>::destroy(alloc, std::addressof(*cur));
+      }
+      CERES_INTERNAL_RETHROW;
+    }
+  }
+}
+
+}  // namespace internal
+}  // namespace ceres
+
+#endif  // CERES_PUBLIC_INTERNAL_MEMORY_H_