public override double VisitAdditiveExpr(LabCalculatorParser.AdditiveExprContext context)
{
var left = WalkLeft(context);
var right = WalkRight(context);
if (context.operatorToken.Type == LabCalculatorLexer.ADD)
{
Debug.WriteLine($"{left} + {right}");
return(left + right);
}
else //LabCalculatorLexer.SUBTRACT
{
Debug.WriteLine($"{left} - {right}");
return(left - right);
}
}
/// <summary>
/// Visit a parse tree produced by the <c>AdditiveExpr</c>
/// labeled alternative in <see cref="LabCalculatorParser.expression"/>.
/// <para>
/// The default implementation returns the result of calling <see cref="AbstractParseTreeVisitor{Result}.VisitChildren(IRuleNode)"/>
/// on <paramref name="context"/>.
/// </para>
/// </summary>
/// <param name="context">The parse tree.</param>
/// <return>The visitor result.</return>
public virtual Result VisitAdditiveExpr([NotNull] LabCalculatorParser.AdditiveExprContext context)
{
return(VisitChildren(context));
}
/// <summary>
/// Exit a parse tree produced by the <c>AdditiveExpr</c>
/// labeled alternative in <see cref="LabCalculatorParser.expression"/>.
/// <para>The default implementation does nothing.</para>
/// </summary>
/// <param name="context">The parse tree.</param>
public virtual void ExitAdditiveExpr([NotNull] LabCalculatorParser.AdditiveExprContext context)
{
}