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// 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
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