public Argument(ArgumentAttribute attribute, FieldInfo field, ErrorReporter reporter)
{
longName = Parser.LongName(attribute, field);
explicitShortName = Parser.ExplicitShortName(attribute);
shortName = Parser.ShortName(attribute, field);
hasHelpText = Parser.HasHelpText(attribute);
helpText = Parser.HelpText(attribute, field);
defaultValue = Parser.DefaultValue(attribute, field);
elementType = ElementType(field);
flags = Flags(attribute, field);
this.field = field;
seenValue = false;
this.reporter = reporter;
isDefault = (attribute != null && attribute is DefaultArgumentAttribute);
if (IsCollection)
{
collectionValues = new ArrayList();
}
Debug.Assert(longName != null && 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");
}
static string LongName(ArgumentAttribute attribute, FieldInfo field)
{
return (attribute == null || attribute.DefaultLongName) ? field.Name : attribute.LongName;
}
static string ShortName(ArgumentAttribute attribute, FieldInfo field)
{
string result;
if (attribute is DefaultArgumentAttribute)
{
result = null;
}
else
{
if (!ExplicitShortName(attribute))
{
result = LongName(attribute, field).Substring(0, 1);
}
else
{
result = attribute.ShortName;
}
}
return result;
}
static string HelpText(ArgumentAttribute attribute, FieldInfo field)
{
string result;
if (attribute == null)
{
result = null;
}
else
{
result = attribute.HelpText;
}
return result;
}
static bool HasHelpText(ArgumentAttribute attribute)
{
return attribute != null && attribute.HasHelpText;
}
static ArgumentType Flags(ArgumentAttribute attribute, FieldInfo field)
{
ArgumentType result;
if (attribute != null)
{
result = attribute.Type;
}
else
{
if (IsCollectionType(field.FieldType))
{
result = ArgumentType.MultipleUnique;
}
else
{
result = ArgumentType.AtMostOnce;
}
}
return result;
}
static bool ExplicitShortName(ArgumentAttribute attribute)
{
return attribute != null && !attribute.DefaultShortName;
}
static object DefaultValue(ArgumentAttribute attribute, FieldInfo field)
{
return (attribute == null || !attribute.HasDefaultValue) ? null : attribute.DefaultValue;
}
