private void LoadOptions(IParameterCollection parameterCollection, TypeDefinition commandType)
{
var optionProperties = commandType.GetAllProperties()
.WithAttribute(CommandLineParserTypeNames.OptionAttributeFullName)
.Where(x => !x.GetAttribute(CommandLineParserTypeNames.OptionAttributeFullName).GetPropertyValueOrDefault <bool>(s_Hidden));
foreach (var property in optionProperties)
{
var optionAttribute = property.GetAttribute(CommandLineParserTypeNames.OptionAttributeFullName);
var(name, shortName) = GetOptionNames(property);
// boolean parameters are treated as switch parameters
if (property.PropertyType.FullName == SystemTypeNames.BooleanFullName)
{
var parameter = parameterCollection.AddSwitchParameter(name, shortName?.ToString());
parameter.Description = optionAttribute.GetPropertyValueOrDefault <string>(s_HelpText);
// emit a warning if parameter was flagged as required
if (optionAttribute.GetPropertyValueOrDefault <bool>(s_Required))
{
m_Logger.LogWarning($"Ignoring 'Required' flag of option '{name}'. Boolean options are treated as switch parameter and cannot be marked as required.");
}
// emit a warning if a default value other than 'false' was required
var defaultValue = GetDefaultValue(property, optionAttribute);
if (defaultValue != null && defaultValue != "false")
{
m_Logger.LogWarning($"Ignoring default value '{defaultValue}' of option '{name}'. Boolean options are treated as switch parameter with a fixed default value of 'false'");
}
}
else
{
var parameter = parameterCollection.AddNamedParameter(name, shortName?.ToString());
parameter.Description = optionAttribute.GetPropertyValueOrDefault <string>(s_HelpText);
parameter.Required = optionAttribute.GetPropertyValueOrDefault <bool>(s_Required);
parameter.DefaultValue = GetDefaultValue(property, optionAttribute);
parameter.AcceptedValues = GetAcceptedValues(property);
parameter.ValuePlaceHolderName = optionAttribute.GetPropertyValueOrDefault <string?>(s_MetaValue);
}
}
}
/// <summary> /// Adds a new named parameter to the application /// </summary> public NamedValuedParameterDocumentation AddNamedParameter(string?name, string?shortName) => m_Parameters.AddNamedParameter(name, shortName);
