r/src/py-to-r.cpp

// 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_types.h"

#if defined(ARROW_R_WITH_ARROW)

#include <arrow/c/bridge.h>

// [[arrow::export]]
std::shared_ptr<arrow::Array> ImportArray(arrow::r::Pointer<struct ArrowArray> array,
                                          arrow::r::Pointer<struct ArrowSchema> schema) {
  return ValueOrStop(arrow::ImportArray(array, schema));
}

// [[arrow::export]]
std::shared_ptr<arrow::RecordBatch> ImportRecordBatch(
    arrow::r::Pointer<struct ArrowArray> array,
    arrow::r::Pointer<struct ArrowSchema> schema) {
  return ValueOrStop(arrow::ImportRecordBatch(array, schema));
}

// [[arrow::export]]
std::shared_ptr<arrow::Schema> ImportSchema(
    arrow::r::Pointer<struct ArrowSchema> schema) {
  return ValueOrStop(arrow::ImportSchema(schema));
}

// [[arrow::export]]
arrow::r::Pointer<struct ArrowSchema> allocate_arrow_schema() { return {}; }

// [[arrow::export]]
void delete_arrow_schema(arrow::r::Pointer<struct ArrowSchema> ptr) { ptr.finalize(); }

// [[arrow::export]]
arrow::r::Pointer<struct ArrowArray> allocate_arrow_array() { return {}; }

// [[arrow::export]]
void delete_arrow_array(arrow::r::Pointer<struct ArrowArray> ptr) { ptr.finalize(); }

// [[arrow::export]]
void ExportType(const std::shared_ptr<arrow::DataType>& type,
                arrow::r::Pointer<struct ArrowSchema> ptr) {
  StopIfNotOk(arrow::ExportType(*type, ptr));
}

// [[arrow::export]]
void ExportSchema(const std::shared_ptr<arrow::Schema>& schema,
                  arrow::r::Pointer<struct ArrowSchema> ptr) {
  StopIfNotOk(arrow::ExportSchema(*schema, ptr));
}

// [[arrow::export]]
void ExportArray(const std::shared_ptr<arrow::Array>& array,
                 arrow::r::Pointer<struct ArrowArray> array_ptr,
                 arrow::r::Pointer<struct ArrowSchema> schema_ptr) {
  StopIfNotOk(arrow::ExportArray(*array, array_ptr, schema_ptr));
}

// [[arrow::export]]
void ExportRecordBatch(const std::shared_ptr<arrow::RecordBatch>& batch,
                       arrow::r::Pointer<struct ArrowArray> array_ptr,
                       arrow::r::Pointer<struct ArrowSchema> schema_ptr) {
  StopIfNotOk(arrow::ExportRecordBatch(*batch, array_ptr, schema_ptr));
}

#endif