public override double Visit(VariableNode node)
{
if (!this.variables.TryGetValue(node.Name, out var value))
{
throw EvaluatingException.VariableDoesNotExist(node.Name);
}
return(value);
}
public override double Visit(ConstantNode node)
{
var constant = this.configuration.EnumerateConstantes().FirstOrDefault(x => x.Key == node.Name);
if (constant.Key == null)
{
throw EvaluatingException.ConstantDoesNotExist(node.Name);
}
return(constant.Value);
}
public EvaluateAstVisitor(IConfigurationEvaluator configurationEvaluation, IDictionary <string, double> variables = null)
{
this.variables = new Dictionary <string, double>(variables ?? new Dictionary <string, double>());
this.configuration = configurationEvaluation ?? throw new ArgumentNullException(nameof(configurationEvaluation));
foreach (var constant in configurationEvaluation.EnumerateConstantes())
{
if (this.variables.ContainsKey(constant.Key))
{
throw EvaluatingException.VariableNameConflictsWithExistingConstantName(constant.Key);
}
this.variables.Add(constant);
}
}
