/*
 * 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.
 */
package org.apache.asterix.lang.common.expression;

import java.util.List;

import org.apache.asterix.common.exceptions.CompilationException;
import org.apache.asterix.lang.common.base.Expression;
import org.apache.asterix.lang.common.visitor.base.ILangVisitor;
import org.apache.commons.lang3.ObjectUtils;

public class ListConstructor implements Expression {
    private List<Expression> exprList;
    private Type type;

    public ListConstructor() {
        // default constructor.
    }

    public ListConstructor(Type type, List<Expression> exprList) {
        this.type = type;
        this.exprList = exprList;
    }

    public List<Expression> getExprList() {
        return exprList;
    }

    public void setExprList(List<Expression> exprList) {
        this.exprList = exprList;
    }

    public Type getType() {
        return type;
    }

    public void setType(Type type) {
        this.type = type;
    }

    @Override
    public Kind getKind() {
        return Kind.LIST_CONSTRUCTOR_EXPRESSION;
    }

    public enum Type {
        ORDERED_LIST_CONSTRUCTOR,
        UNORDERED_LIST_CONSTRUCTOR
    }

    @Override
    public <R, T> R accept(ILangVisitor<R, T> visitor, T arg) throws CompilationException {
        return visitor.visit(this, arg);
    }

    @Override
    public int hashCode() {
        return ObjectUtils.hashCodeMulti(exprList, type);
    }

    @Override
    public boolean equals(Object object) {
        if (this == object) {
            return true;
        }
        if (!(object instanceof ListConstructor)) {
            return false;
        }
        ListConstructor target = (ListConstructor) object;
        return ObjectUtils.equals(exprList, target.exprList) && ObjectUtils.equals(type, target.type);
    }
}
