private static bool SetPropertyValue(Parsable parsable, Token token, IEnumerable<Token> tokens, ParsableArgumentAttribute parsableArgument, PropertyInfo prop)
{
if (token == null)
{
if (parsableArgument.DefaultValue != null)
{
prop.SetValue(parsable, parsableArgument.DefaultValue);
return true;
}
return false; // couldnt find matching token, return false.
}
Token tokenValue = null;
if(token.Type == TokenType.Field)
{
if (prop.PropertyType == typeof (bool))
{
// check if we have been provided a "true" or "false" value.
tokenValue =
tokens.FirstOrDefault(x => !x.Taken && x.Index == token.Index + 1 && x.Type == TokenType.Value);
var optionValue = true;
if (tokenValue != null && !Boolean.TryParse(tokenValue.Value.ToString(), out optionValue))
{
// tokenValue did not contain a valid bool so do not use its value, set it back to null so it will not be flagged as Taken.
tokenValue = null;
optionValue = true;
}
prop.SetValue(parsable, optionValue); // set property to true if flag was provided.
}
else
{
tokenValue =
tokens.FirstOrDefault(x => !x.Taken && x.Index == token.Index + 1 && x.Type == TokenType.Value);
if (tokenValue == null)
throw new CliParseException(string.Format(CultureInfo.CurrentCulture, "Missing value for ParsableArgument {0}", token.Value));
PropertyDescriptor propertyDescriptor = TypeDescriptor.GetProperties(parsable)[prop.Name];
prop.SetValue(parsable,
propertyDescriptor.Converter != null
? propertyDescriptor.Converter.ConvertFrom(tokenValue.Value)
: tokenValue);
}
}
if (token.Type == TokenType.Value)
{
PropertyDescriptor propertyDescriptor = TypeDescriptor.GetProperties(parsable)[prop.Name];
prop.SetValue(parsable,
propertyDescriptor.Converter != null
? propertyDescriptor.Converter.ConvertFrom(token.Value)
: token.Value);
}
token.Taken = true;
if (tokenValue != null) tokenValue.Taken = true;
return true;
}
private static bool IsHelpToken(Token token, Parsable parsable)
{
var parsableClass = Helper.GetObjectAttribute(parsable, typeof(ParsableClassAttribute)) as ParsableClassAttribute ?? new ParsableClassAttribute("");
var defaultHelpArgs = parsableClass.ShowHelpParameters;
return token.Type == TokenType.Field && defaultHelpArgs.Contains(token.Value.ToString());
}
