private object Visit(PreIncrementNode node)
{
if (node.Variable == null)
{
ReportError(new Exception("You can only apply inc/dec operations (++,--) on variables!"));
return(null);
}
if (!GlobalVariables.ContainsKey(node.Variable.Name))
{
ReportError(new Exception($"Variable {node.Variable.Name} has not been declared!"));
return(null);
}
dynamic variable = GlobalVariables[node.Variable.Name];
if (!Tokens.IsNumberType(variable.Type))
{
ReportError(new Exception("You can only apply inc/dec operations (++,--) to numeric types!"));
return(null);
}
GlobalVariables[node.Variable.Name].Value = variable.Value + 1;
return(GlobalVariables[node.Variable.Name].Value);
}
private void Visit(PreIncrementNode node) => Visit(node.Variable);
