public Argument(ArgumentAttribute attribute, FieldInfo field, ErrorReporter reporter)
{
_longName = CommandLineParser.LongName(attribute, field);
_explicitShortName = CommandLineParser.ExplicitShortName(attribute);
_shortName = CommandLineParser.ShortName(attribute, field);
_hasHelpText = CommandLineParser.HasHelpText(attribute);
_helpText = CommandLineParser.HelpText(attribute);
_defaultValue = CommandLineParser.DefaultValue(attribute);
_elementType = ElementType(field);
_flags = Flags(attribute, field);
_field = field;
_seenValue = false;
_reporter = reporter;
_isDefault = attribute != null && attribute is DefaultArgumentAttribute;
if (IsCollection)
{
_collectionValues = new ArrayList();
}
Debug.Assert(!string.IsNullOrEmpty(_longName));
Debug.Assert(!_isDefault || !ExplicitShortName);
Debug.Assert(!IsCollection || AllowMultiple, "Collection arguments must have allow multiple");
Debug.Assert(!Unique || IsCollection, "Unique only applicable to collection arguments");
Debug.Assert(IsValidElementType(Type) || IsCollectionType(Type));
Debug.Assert((IsCollection && IsValidElementType(_elementType)) ||
(!IsCollection && _elementType == null));
Debug.Assert(!(IsRequired && HasDefaultValue), "Required arguments cannot have default value");
Debug.Assert(!HasDefaultValue || (_defaultValue.GetType() == field.FieldType),
"Type of default value must match field type");
}
public static string LongName(ArgumentAttribute attribute, FieldInfo field)
{
return (attribute == null || attribute.DefaultLongName) ? field.Name : attribute.LongName;
}
public static string ShortName(ArgumentAttribute attribute, FieldInfo field)
{
if (attribute is DefaultArgumentAttribute)
return null;
if (!ExplicitShortName(attribute))
return LongName(attribute, field).Substring(0, 1);
return attribute.ShortName;
}
public static string HelpText(ArgumentAttribute attribute)
{
return attribute == null ? null : attribute.HelpText;
}
public static bool HasHelpText(ArgumentAttribute attribute)
{
return (attribute != null && attribute.HasHelpText);
}
public static ArgumentType Flags(ArgumentAttribute attribute, FieldInfo field)
{
if (attribute != null)
{
return attribute.Type;
}
return IsCollectionType(field.FieldType) ? ArgumentType.MultipleUnique : ArgumentType.AtMostOnce;
}
public static bool ExplicitShortName(ArgumentAttribute attribute)
{
return (attribute != null && !attribute.DefaultShortName);
}
public static object DefaultValue(ArgumentAttribute attribute)
{
return (attribute == null || !attribute.HasDefaultValue) ? null : attribute.DefaultValue;
}