utils.hpp

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/*
 *   Copyright 2021 Huawei Technologies Co., Ltd.
 *
 * Licensed 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.
 */

#ifndef _H_GRB_ITERATOR_UTILS
#define _H_GRB_ITERATOR_UTILS

#include <cstddef>

#include <graphblas/rc.hpp>
#include <graphblas/type_traits.hpp>

#include "type_traits.hpp"


namespace grb {

    namespace utils {

        template< typename IterT >
        inline RC check_input_coordinates(
            const IterT &it,
            const typename IterT::RowIndexType rows,
            const typename IterT::ColumnIndexType cols
        ) {
            static_assert( grb::utils::is_alp_matrix_iterator< void, IterT >::value,
                "IterT is not an ALP matrix iterator" );
            if( it.i() >= rows ) {
#ifndef NDEBUG
                std::cerr << "Error: " << rows << " x " << cols
                << " matrix nonzero ingestion encounters row "
                << "index at " << it.i() << std::endl;
#endif
                return MISMATCH;
            }
            if( it.j() >= cols ) {
#ifndef NDEBUG
                std::cerr << "Error: " << rows << " x " << cols
                << " matrix nonzero ingestion encounters column "
                << "input at " << it.j() << std::endl;
#endif
                return MISMATCH;
            }
            return SUCCESS;
        }

    } // end namespace utils

} // end namespace grb

#endif // end _H_GRB_ITERATOR_UTILS