public void Visit(MinusOperator @operator)
{
@operator.LeftNode.Accept(this);
var leftValue = this.Result;
@operator.RightNode.Accept(this);
var rightValue = this.Result;
if (leftValue == null || rightValue == null)
{
Result = null;
}
else
{
try
{
Result = checked (leftValue - rightValue);
}
catch
{
ErrorHandler.PrintError(Errors.Overflow);
Result = null;
}
}
}
public void Visit(MinusOperator @operator)
{
ParenthesizedExpression.Append("(");
@operator.LeftNode.Accept(this);
ParenthesizedExpression.Append("-");
@operator.RightNode.Accept(this);
ParenthesizedExpression.Append(")");
}
public void Visit(MinusOperator @operator)
{
@operator.LeftNode.Accept(this);
var leftValue = this.Result;
@operator.RightNode.Accept(this);
var rightValue = this.Result;
Result = leftValue - rightValue;
}