import quincy 17.2.0

[ceph.git] / ceph / src / arrow / cpp / src / arrow / util / bitmap.cc

diff --git a/ceph/src/arrow/cpp/src/arrow/util/bitmap.cc b/ceph/src/arrow/cpp/src/arrow/util/bitmap.cc
new file mode 100644 (file)
index 0000000..33d1dee
--- /dev/null
+++ b/ceph/src/arrow/cpp/src/arrow/util/bitmap.cc
@@ -0,0 +1,75 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you 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
+//
+//   http://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.
+
+#include "arrow/util/bitmap.h"
+
+#include <cstdint>
+#include <cstring>
+#include <memory>
+#include <string>
+
+#include "arrow/array/array_primitive.h"
+#include "arrow/buffer.h"
+#include "arrow/util/bitmap_ops.h"
+#include "arrow/util/logging.h"
+
+namespace arrow {
+namespace internal {
+
+std::string Bitmap::ToString() const {
+  std::string out(length_ + ((length_ - 1) / 8), ' ');
+  for (int64_t i = 0; i < length_; ++i) {
+    out[i + (i / 8)] = GetBit(i) ? '1' : '0';
+  }
+  return out;
+}
+
+std::shared_ptr<BooleanArray> Bitmap::ToArray() const {
+  return std::make_shared<BooleanArray>(length_, buffer_, nullptr, 0, offset_);
+}
+
+std::string Bitmap::Diff(const Bitmap& other) const {
+  return ToArray()->Diff(*other.ToArray());
+}
+
+void Bitmap::CopyFrom(const Bitmap& other) {
+  ::arrow::internal::CopyBitmap(other.buffer_->data(), other.offset_, other.length_,
+                                buffer_->mutable_data(), offset_);
+}
+
+void Bitmap::CopyFromInverted(const Bitmap& other) {
+  ::arrow::internal::InvertBitmap(other.buffer_->data(), other.offset_, other.length_,
+                                  buffer_->mutable_data(), offset_);
+}
+
+bool Bitmap::Equals(const Bitmap& other) const {
+  if (length_ != other.length_) {
+    return false;
+  }
+  return BitmapEquals(buffer_->data(), offset_, other.buffer_->data(), other.offset(),
+                      length_);
+}
+
+int64_t Bitmap::BitLength(const Bitmap* bitmaps, size_t N) {
+  for (size_t i = 1; i < N; ++i) {
+    DCHECK_EQ(bitmaps[i].length(), bitmaps[0].length());
+  }
+  return bitmaps[0].length();
+}
+
+}  // namespace internal
+}  // namespace arrow