com.blazebit.persistence.parser.expression.ArithmeticExpression Maven / Gradle / Ivy
/*
* Copyright 2014 - 2020 Blazebit.
*
* 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.
*/
package com.blazebit.persistence.parser.expression;
/**
*
* @author Moritz Becker
* @since 1.2.0
*/
public class ArithmeticExpression extends AbstractNumericExpression {
private Expression left;
private Expression right;
private final ArithmeticOperator op;
public ArithmeticExpression(Expression left, Expression right, ArithmeticOperator op) {
super(resolveType(left, right));
this.left = left;
this.right = right;
this.op = op;
}
public Expression getLeft() {
return left;
}
public void setLeft(Expression left) {
this.left = left;
}
public Expression getRight() {
return right;
}
public void setRight(Expression right) {
this.right = right;
}
public ArithmeticOperator getOp() {
return op;
}
private static NumericType resolveType(Expression left, Expression right) {
if (!(left instanceof NumericExpression && right instanceof NumericExpression)) {
return null;
}
NumericExpression numericLeft = (NumericExpression) left;
NumericExpression numericRight = (NumericExpression) right;
if (numericLeft == null || numericLeft.getNumericType() == null) {
return numericRight == null ? null : numericRight.getNumericType();
} else if (numericRight == null || numericRight.getNumericType() == null) {
return numericLeft.getNumericType();
}
return NumericType.values()[Math.max(numericLeft.getNumericType().ordinal(), numericRight.getNumericType().ordinal())];
}
@Override
public Expression copy(ExpressionCopyContext copyContext) {
return new ArithmeticExpression(left.copy(copyContext), right.copy(copyContext), op);
}
@Override
public void accept(Visitor visitor) {
visitor.visit(this);
}
@Override
public T accept(ResultVisitor visitor) {
return visitor.visit(this);
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (!(o instanceof ArithmeticExpression)) {
return false;
}
if (!super.equals(o)) {
return false;
}
ArithmeticExpression that = (ArithmeticExpression) o;
if (left != null ? !left.equals(that.left) : that.left != null) {
return false;
}
if (right != null ? !right.equals(that.right) : that.right != null) {
return false;
}
return op == that.op;
}
@Override
public int hashCode() {
int result = super.hashCode();
result = 31 * result + (left != null ? left.hashCode() : 0);
result = 31 * result + (right != null ? right.hashCode() : 0);
result = 31 * result + (op != null ? op.hashCode() : 0);
return result;
}
}