Add ArrowCStruct proxy class

Author: sgilmore10

matlab/src/cpp/arrow/matlab/c/proxy/array_c_struct.cc

@@ -0,0 +1,49 @@
+// 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/matlab/c/proxy/array_c_struct.h"
+#include "libmexclass/proxy/Proxy.h"
+
+namespace arrow::matlab::c::proxy {
+  ArrayCStruct::ArrayCStruct() : array_c_struct{new ArrowArray{}} {
+      REGISTER_METHOD(ArrayCStruct, getAddress);
+  }
+
+  libmexclass::proxy::MakeResult ArrayCStruct::make(const libmexclass::proxy::FunctionArguments& constructor_arguments) {
+    return std::make_shared<ArrayCStruct>();
+  }
+
+  ArrayCStruct::~ArrayCStruct() {
+    if (array_c_struct != nullptr) { 
+      if (array_c_struct->release != nullptr) {
+        array_c_struct->release(array_c_struct);
+        array_c_struct->release = nullptr;
+      }
+      free(array_c_struct);
+    }
+  }
+
+  void ArrayCStruct::getAddress(libmexclass::proxy::method::Context& context) {
+    namespace mda = ::matlab::data;
+    
+    mda::ArrayFactory factory;
+    auto address = reinterpret_cast<uint64_t>(array_c_struct);
+    context.outputs[0] = factory.createScalar(address);
+  }
+
+
+}  // namespace arrow::matlab::c::proxy

matlab/src/cpp/arrow/matlab/c/proxy/array_c_struct.h

@@ -0,0 +1,41 @@
+// 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 "arrow/c/abi.h"
+#include "libmexclass/proxy/Proxy.h"
+
+namespace arrow::matlab::c::proxy {
+
+class ArrayCStruct : public libmexclass::proxy::Proxy {
+ public:
+  ArrayCStruct();
+
+  ~ArrayCStruct();
+
+  static libmexclass::proxy::MakeResult make(
+    const libmexclass::proxy::FunctionArguments& constructor_arguments);
+
+ protected:
+  void getAddress(libmexclass::proxy::method::Context& context);
+
+  struct ArrowArray* array_c_struct;
+
+};
+
+}  // namespace arrow::matlab::c::proxy

matlab/src/cpp/arrow/matlab/proxy/factory.cc

@@ -25,6 +25,7 @@
 #include "arrow/matlab/array/proxy/time64_array.h"
 #include "arrow/matlab/array/proxy/timestamp_array.h"
 #include "arrow/matlab/buffer/proxy/buffer.h"
+#include "arrow/matlab/c/proxy/array_c_struct.h"
 #include "arrow/matlab/error/error.h"
 #include "arrow/matlab/io/csv/proxy/table_reader.h"
 #include "arrow/matlab/io/csv/proxy/table_writer.h"
@@ -99,6 +100,7 @@ libmexclass::proxy::MakeResult Factory::make_proxy(
   REGISTER_PROXY(arrow.io.feather.proxy.Reader   , arrow::matlab::io::feather::proxy::Reader);
   REGISTER_PROXY(arrow.io.csv.proxy.TableWriter  , arrow::matlab::io::csv::proxy::TableWriter);
   REGISTER_PROXY(arrow.io.csv.proxy.TableReader  , arrow::matlab::io::csv::proxy::TableReader);
+  REGISTER_PROXY(arrow.c.proxy.ArrayCStruct     , arrow::matlab::c::proxy::ArrayCStruct);
   // clang-format on
 
   return libmexclass::error::Error{error::UNKNOWN_PROXY_ERROR_ID,

matlab/tools/cmake/BuildMatlabArrowInterface.cmake

@@ -75,7 +75,8 @@ set(MATLAB_ARROW_LIBMEXCLASS_CLIENT_PROXY_SOURCES "${CMAKE_SOURCE_DIR}/src/cpp/a
                                                   "${CMAKE_SOURCE_DIR}/src/cpp/arrow/matlab/io/csv/proxy/table_writer.cc"
                                                   "${CMAKE_SOURCE_DIR}/src/cpp/arrow/matlab/io/csv/proxy/table_reader.cc"
                                                   "${CMAKE_SOURCE_DIR}/src/cpp/arrow/matlab/index/validate.cc"
-                                                  "${CMAKE_SOURCE_DIR}/src/cpp/arrow/matlab/buffer/proxy/buffer.cc")
+                                                  "${CMAKE_SOURCE_DIR}/src/cpp/arrow/matlab/buffer/proxy/buffer.cc"
+                                                  "${CMAKE_SOURCE_DIR}/src/cpp/arrow/matlab/c/proxy/array_c_struct.cc")
 
 
 set(MATLAB_ARROW_LIBMEXCLASS_CLIENT_PROXY_FACTORY_INCLUDE_DIR "${CMAKE_SOURCE_DIR}/src/cpp/arrow/matlab/proxy")