public static string Format(Argument argument)
{
var f = new WebIDLFormatter();
f.Visit(argument);
return f._sb.ToString();
}
private Argument Resolve(Argument argument)
{
return(argument.DecomposeWithResult(
required => { var t = Resolve(required.Type, required.ExtendedAttributes); return Argument.Required(required.Name, t.Item1, t.Item2.Select(Resolve)); },
optional => { var t = Resolve(optional.Type, optional.ExtendedAttributes); return Argument.Optional(optional.Name, t.Item1, optional.DefaultValue, t.Item2.Select(Resolve)); },
ellipsis => { var t = Resolve(ellipsis.Type, ellipsis.ExtendedAttributes); return Argument.Ellipsis(ellipsis.Name, t.Item1, t.Item2.Select(Resolve)); }
));
}
private void Visit(Argument argument)
{
argument.Decompose(
required => {
Visit(required.ExtendedAttributes, ExtendedAttributeMode.Argument);
Visit(required.Type);
_sb.Append(" " + required.Name);
},
optional => {
Visit(optional.ExtendedAttributes, ExtendedAttributeMode.Argument);
_sb.Append("optional ");
Visit(optional.Type);
_sb.Append(" " + optional.Name);
if (optional.DefaultValue != null) {
_sb.Append(" = ");
Visit(optional.DefaultValue);
}
},
ellipsis => {
Visit(ellipsis.ExtendedAttributes, ExtendedAttributeMode.Argument);
Visit(ellipsis.Type);
_sb.Append("... " + ellipsis.Name);
}
);
}
