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#pragma clang system_header
// 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.
#pragma once
#include <cstdint>
#include <cstring>
#include <memory>
#include <type_traits>
#include "arrow/array/builder_base.h"
#include "arrow/buffer.h"
#include "arrow/status.h"
#include "arrow/type.h"
#include "arrow/util/macros.h"
#include "arrow/util/visibility.h"
namespace arrow20 {
/// \addtogroup numeric-builders
///
/// @{
namespace internal {
class ARROW_EXPORT AdaptiveIntBuilderBase : public ArrayBuilder {
public:
AdaptiveIntBuilderBase(uint8_t start_int_size, MemoryPool* pool,
int64_t alignment = kDefaultBufferAlignment);
explicit AdaptiveIntBuilderBase(MemoryPool* pool,
int64_t alignment = kDefaultBufferAlignment)
: AdaptiveIntBuilderBase(sizeof(uint8_t), pool, alignment) {}
/// \brief Append multiple nulls
/// \param[in] length the number of nulls to append
Status AppendNulls(int64_t length) final {
ARROW_RETURN_NOT_OK(CommitPendingData());
if (ARROW_PREDICT_TRUE(length > 0)) {
ARROW_RETURN_NOT_OK(Reserve(length));
memset(data_->mutable_data() + length_ * int_size_, 0, int_size_ * length);
UnsafeSetNull(length);
}
return Status::OK();
}
Status AppendNull() final {
pending_data_[pending_pos_] = 0;
pending_valid_[pending_pos_] = 0;
pending_has_nulls_ = true;
++pending_pos_;
++length_;
++null_count_;
if (ARROW_PREDICT_FALSE(pending_pos_ >= pending_size_)) {
return CommitPendingData();
}
return Status::OK();
}
Status AppendEmptyValues(int64_t length) final {
ARROW_RETURN_NOT_OK(CommitPendingData());
if (ARROW_PREDICT_TRUE(length > 0)) {
ARROW_RETURN_NOT_OK(Reserve(length));
memset(data_->mutable_data() + length_ * int_size_, 0, int_size_ * length);
UnsafeSetNotNull(length);
}
return Status::OK();
}
Status AppendEmptyValue() final {
pending_data_[pending_pos_] = 0;
pending_valid_[pending_pos_] = 1;
++pending_pos_;
++length_;
if (ARROW_PREDICT_FALSE(pending_pos_ >= pending_size_)) {
return CommitPendingData();
}
return Status::OK();
}
void Reset() override;
Status Resize(int64_t capacity) override;
protected:
Status AppendInternal(const uint64_t val) {
pending_data_[pending_pos_] = val;
pending_valid_[pending_pos_] = 1;
++pending_pos_;
++length_;
if (ARROW_PREDICT_FALSE(pending_pos_ >= pending_size_)) {
return CommitPendingData();
}
return Status::OK();
}
virtual Status CommitPendingData() = 0;
template <typename new_type, typename old_type>
typename std::enable_if<sizeof(old_type) >= sizeof(new_type), Status>::type
ExpandIntSizeInternal();
template <typename new_type, typename old_type>
typename std::enable_if<(sizeof(old_type) < sizeof(new_type)), Status>::type
ExpandIntSizeInternal();
std::shared_ptr<ResizableBuffer> data_;
uint8_t* raw_data_ = NULLPTR;
const uint8_t start_int_size_;
uint8_t int_size_;
static constexpr int32_t pending_size_ = 1024;
uint8_t pending_valid_[pending_size_];
uint64_t pending_data_[pending_size_];
int32_t pending_pos_ = 0;
bool pending_has_nulls_ = false;
};
} // namespace internal
class ARROW_EXPORT AdaptiveUIntBuilder : public internal::AdaptiveIntBuilderBase {
public:
explicit AdaptiveUIntBuilder(uint8_t start_int_size,
MemoryPool* pool = default_memory_pool());
explicit AdaptiveUIntBuilder(MemoryPool* pool = default_memory_pool())
: AdaptiveUIntBuilder(sizeof(uint8_t), pool) {}
using internal::AdaptiveIntBuilderBase::Reset;
/// Scalar append
Status Append(const uint64_t val) { return AppendInternal(val); }
/// \brief Append a sequence of elements in one shot
/// \param[in] values a contiguous C array of values
/// \param[in] length the number of values to append
/// \param[in] valid_bytes an optional sequence of bytes where non-zero
/// indicates a valid (non-null) value
/// \return Status
Status AppendValues(const uint64_t* values, int64_t length,
const uint8_t* valid_bytes = NULLPTR);
Status FinishInternal(std::shared_ptr<ArrayData>* out) override;
std::shared_ptr<DataType> type() const override;
protected:
Status CommitPendingData() override;
Status ExpandIntSize(uint8_t new_int_size);
Status AppendValuesInternal(const uint64_t* values, int64_t length,
const uint8_t* valid_bytes);
template <typename new_type>
Status ExpandIntSizeN();
};
class ARROW_EXPORT AdaptiveIntBuilder : public internal::AdaptiveIntBuilderBase {
public:
explicit AdaptiveIntBuilder(uint8_t start_int_size,
MemoryPool* pool = default_memory_pool(),
int64_t alignment = kDefaultBufferAlignment);
explicit AdaptiveIntBuilder(MemoryPool* pool = default_memory_pool(),
int64_t alignment = kDefaultBufferAlignment)
: AdaptiveIntBuilder(sizeof(uint8_t), pool, alignment) {}
using internal::AdaptiveIntBuilderBase::Reset;
/// Scalar append
Status Append(const int64_t val) { return AppendInternal(static_cast<uint64_t>(val)); }
/// \brief Append a sequence of elements in one shot
/// \param[in] values a contiguous C array of values
/// \param[in] length the number of values to append
/// \param[in] valid_bytes an optional sequence of bytes where non-zero
/// indicates a valid (non-null) value
/// \return Status
Status AppendValues(const int64_t* values, int64_t length,
const uint8_t* valid_bytes = NULLPTR);
Status FinishInternal(std::shared_ptr<ArrayData>* out) override;
std::shared_ptr<DataType> type() const override;
protected:
Status CommitPendingData() override;
Status ExpandIntSize(uint8_t new_int_size);
Status AppendValuesInternal(const int64_t* values, int64_t length,
const uint8_t* valid_bytes);
template <typename new_type>
Status ExpandIntSizeN();
};
/// @}
} // namespace arrow20
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