package org.jtwig.render.expression.calculator.operation.binary.calculators;
import org.jtwig.exceptions.CalculationException;
import org.jtwig.model.position.Position;
import org.jtwig.render.RenderRequest;
import org.jtwig.value.convert.Converter;
import java.math.BigDecimal;
import static org.jtwig.util.ErrorMessageFormatter.errorMessage;
public class MathOperationCalculator implements SimpleBinaryOperationCalculator {
private final SimpleBinaryMathCalculator simpleBinaryMathCalculator;
public MathOperationCalculator(SimpleBinaryMathCalculator simpleBinaryMathCalculator) {
this.simpleBinaryMathCalculator = simpleBinaryMathCalculator;
}
@Override
public Object calculate(RenderRequest request, Position position, Object left, Object right) {
Converter<BigDecimal> numberConverter = request.getEnvironment().getValueEnvironment().getNumberConverter();
Converter.Result<BigDecimal> leftNumber = numberConverter.convert(left);
if (!leftNumber.isDefined()) throw new CalculationException(errorMessage(position, "Left argument expected to be a number"));
Converter.Result<BigDecimal> rightNumber = numberConverter.convert(right);
if (!rightNumber.isDefined()) throw new CalculationException(errorMessage(position, "Right argument expected to be a number"));
return simpleBinaryMathCalculator.calculate(request, leftNumber.get(), rightNumber.get());
}
}