public override IExpressionNode VisitArtithmeticExpression(ArtithmeticExpressionContext context)
{
if (context == null)
{
throw new ArgumentNullException("Context can't be null");
}
if (context.ID() != null)
{
return(new IdentifierNode(Location.FromContext(context), context.ID().GetText()));
}
if (context.DOUBLE() != null)
{
return(new LiteralNode(Location.FromContext(context), context.DOUBLE().GetText(), QValueType.Double));
}
if (context.INT() != null)
{
return(new LiteralNode(Location.FromContext(context), context.INT().GetText(), QValueType.Integer));
}
if (context.MULT() != null || context.DIV() != null || context.PLUS() != null || context.MINUS() != null)
{
var left = VisitArtithmeticExpression(context.LEFT);
var opr = GetArthimeticOperator(context);
var right = VisitArtithmeticExpression(context.RIGHT);
return(new ArthimetricExpressionNode(Location.FromContext(context), left, opr, right));
}
if (context.artithmeticExpression() != null)
{
return(VisitArtithmeticExpression(context.artithmeticExpression()[0]));
}
return(base.VisitArtithmeticExpression(context));
}
private ArthimetricOperator GetArthimeticOperator(ArtithmeticExpressionContext context)
{
if (context.MULT() != null)
{
return(ArthimetricExpressionNode.ParseArthimeticOperator(context.MULT().GetText()));
}
if (context.DIV() != null)
{
return(ArthimetricExpressionNode.ParseArthimeticOperator(context.DIV().GetText()));
}
if (context.PLUS() != null)
{
return(ArthimetricExpressionNode.ParseArthimeticOperator(context.PLUS().GetText()));
}
if (context.MINUS() != null)
{
return(ArthimetricExpressionNode.ParseArthimeticOperator(context.MINUS().GetText()));
}
throw new UnknownOperatorException("We don't know what to do here!");
}
