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) { }