/// <summary>
/// Find LongName argument from the OptionAttribute.
/// </summary>
/// <param name="attributeSyntax"></param>
/// <returns>
/// name: the LongName value.
/// location: the syntax tree location of the LongName argument value.
/// </returns>
private (string? name, Location? location) AnalyzeOptionAttributeArguments(AttributeSyntax attributeSyntax)
{
var argumentList = attributeSyntax.ChildNodes().OfType<AttributeArgumentListSyntax>().FirstOrDefault();
if (argumentList != null)
{
var attributeArguments = argumentList.ChildNodes().OfType<AttributeArgumentSyntax>();
foreach (var attributeArgument in attributeArguments)
{
var expressionSyntax = attributeArgument.Expression;
var expression = expressionSyntax.ToString();
var nameEqualsExists = attributeArgument.ChildNodes().OfType<NameEqualsSyntax>().Any();
var longNameEqualsExists = attributeArgument.ChildNodes().OfType<NameEqualsSyntax>().Any(x => x.Name.ToString() == "LongName");
var mayBeLongName = !nameEqualsExists || longNameEqualsExists;
if (expression != null
&& expression.StartsWith("\"", StringComparison.OrdinalIgnoreCase)
&& expression.EndsWith("\"", StringComparison.OrdinalIgnoreCase)
&& mayBeLongName)
{
var value = expression.Substring(1, expression.Length - 2);
if (value.Length >= 2)
{
var isPascalCase = NamingHelper.CheckIsPascalCase(value);
if (!isPascalCase)
{
return (value, expressionSyntax.GetLocation());
}
}
break;
}
}
}
return (null, null);
}