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/*******************************************************************************
 * Copyright (c) 2015-2018 Skymind, Inc.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Apache License, Version 2.0 which is available at
 * https://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.
 *
 * SPDX-License-Identifier: Apache-2.0
 ******************************************************************************/

package org.nd4j.linalg.api.ops;

import lombok.Getter;
import lombok.NonNull;
import lombok.Setter;
import lombok.val;
import org.nd4j.linalg.api.buffer.DataType;
import org.nd4j.linalg.api.ndarray.INDArray;

import java.util.*;

/**
 * Implementation of common methods for OpContext
 *
 * @author [email protected]
 */
public abstract class BaseOpContext implements OpContext {
    protected Map fastpath_in = new HashMap<>();
    protected Map fastpath_out = new HashMap<>();

    protected List fastpath_t = new ArrayList<>();
    protected List fastpath_b = new ArrayList<>();
    protected List fastpath_i = new ArrayList<>();
    protected List fastpath_d = new ArrayList<>();

    @Setter()
    @Getter
    protected ExecutionMode executionMode = ExecutionMode.UNDEFINED;

    @Override
    public void setIArguments(long... arguments) {
        fastpath_i.clear();
        for (val v:arguments)
            fastpath_i.add(v);
    }

    @Override
    public List getIArguments(){
        return fastpath_i;
    }

    @Override
    public int numIArguments() {
        return fastpath_i.size();
    }

    @Override
    public void setTArguments(double... arguments) {
        fastpath_t.clear();
        for (val v:arguments)
            fastpath_t.add(v);
    }

    @Override
    public List getTArguments(){
        return fastpath_t;
    }

    @Override
    public int numTArguments() {
        return fastpath_t.size();
    }

    @Override
    public void setBArguments(boolean... arguments) {
        fastpath_b.clear();
        for (val v:arguments)
            fastpath_b.add(v);
    }

    @Override
    public List getBArguments(){
        return fastpath_b;
    }

    @Override
    public int numBArguments() {
        return fastpath_b.size();
    }

    @Override
    public void setDArguments(DataType... arguments) {
        fastpath_d.clear();
        for (val v:arguments)
            fastpath_d.add(v);
    }

    @Override
    public List getDArguments() {
        return fastpath_d;
    }

    @Override
    public int numDArguments() {
        return fastpath_d.size();
    }

    @Override
    public void setInputArray(int index, @NonNull INDArray array) {
        fastpath_in.put(index, array);
    }

    @Override
    public List getInputArrays() {
        val result = new ArrayList();
        for (int e = 0; e < Integer.MAX_VALUE; e++) {
            val arr = fastpath_in.get(e);
            if (arr != null)
                result.add(arr);
            else
                break;
        }

        return result;
    }

    @Override
    public int numInputArguments() {
        return fastpath_in.size();
    }

    @Override
    public INDArray getInputArray(int idx) {
        return fastpath_in.get(idx);
    }

    @Override
    public List getOutputArrays() {
        val result = new ArrayList();
        for (int e = 0; e < Integer.MAX_VALUE; e++) {
            val arr = fastpath_out.get(e);
            if (arr != null)
                result.add(arr);
            else
                break;
        }

        return result;
    }

    @Override
    public void setOutputArray(int index, @NonNull INDArray array) {
        fastpath_out.put(index, array);
    }

    @Override
    public INDArray getOutputArray(int i) {
        return fastpath_out.get(i);
    }

    @Override
    public int numOutputArguments() {
        return fastpath_out.size();
    }

    @Override
    public void setInputArrays(@NonNull List arrays) {
        for (int e = 0; e < arrays.size(); e++)
            setInputArray(e, arrays.get(e));
    }

    @Override
    public void setOutputArrays(@NonNull List arrays) {
        for (int e = 0; e < arrays.size(); e++)
            setOutputArray(e, arrays.get(e));
    }

    @Override
    public void setInputArrays(INDArray... arrays) {
        for (int e = 0; e < arrays.length; e++)
            setInputArray(e, arrays[e]);
    }

    @Override
    public void setOutputArrays(INDArray... arrays) {
        for (int e = 0; e < arrays.length; e++)
            setOutputArray(e, arrays[e]);
    }

    @Override
    public void purge() {
        fastpath_in.clear();
        fastpath_out.clear();
    }
}