/*
* Licensed to CRATE Technology GmbH ("Crate") under one or more contributor
* license agreements.  See the NOTICE file distributed with this work for
* additional information regarding copyright ownership.  Crate 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.
*
* However, if you have executed another commercial license agreement
* with Crate these terms will supersede the license and you may use the
* software solely pursuant to the terms of the relevant commercial agreement.
*/

package io.crate.sql.tree;

public class ArithmeticExpression
    extends Expression {
    public enum Type {
        ADD("+"),
        SUBTRACT("-"),
        MULTIPLY("*"),
        DIVIDE("/"),
        MODULUS("%");
        private final String value;

        Type(String value) {
            this.value = value;
        }

        public String getValue() {
            return value;
        }
    }

    private final Type type;
    private final Expression left;
    private final Expression right;

    public ArithmeticExpression(Type type, Expression left, Expression right) {
        this.type = type;
        this.left = left;
        this.right = right;
    }

    public Type getType() {
        return type;
    }

    public Expression getLeft() {
        return left;
    }

    public Expression getRight() {
        return right;
    }

    @Override
    public <R, C> R accept(AstVisitor<R, C> visitor, C context) {
        return visitor.visitArithmeticExpression(this, context);
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }

        ArithmeticExpression that = (ArithmeticExpression) o;

        if (!left.equals(that.left)) {
            return false;
        }
        if (!right.equals(that.right)) {
            return false;
        }
        if (type != that.type) {
            return false;
        }

        return true;
    }

    @Override
    public int hashCode() {
        int result = type.hashCode();
        result = 31 * result + left.hashCode();
        result = 31 * result + right.hashCode();
        return result;
    }
}