AddOperator.java

package nl.uva.sc.encoders.ql.ast.operator;

import nl.uva.sc.encoders.ql.ast.type.DataType;
import nl.uva.sc.encoders.ql.ast.type.IntegerType;
import nl.uva.sc.encoders.ql.ast.type.StringType;
import nl.uva.sc.encoders.ql.visitor.BinaryOperatorVisitor;

public class AddOperator implements BinaryOperator {
	private String stringRepresentation;

	public AddOperator(String stringRepresentation) {
		this.stringRepresentation = stringRepresentation;
	}

	@Override
	public String toString() {
		return stringRepresentation.toString();
	}

	@Override
	public <T> T accept(BinaryOperatorVisitor<T> visitor) {
		return visitor.visit(this);
	}

	@Override
	public boolean supports(DataType leftHandType, DataType rightHandType) {
		if (!(leftHandType instanceof StringType) && !(leftHandType instanceof IntegerType)) {
			return false;
		}
		if (!(rightHandType instanceof StringType) && !(rightHandType instanceof IntegerType)) {
			return false;
		}
		return true;
	}

	@Override
	public DataType getType(DataType leftHandType, DataType rightHandType) {
		if (leftHandType instanceof StringType || rightHandType instanceof StringType) {
			return new StringType();
		}
		return new IntegerType();
	}

}