UDA + Pegged AST Hack

[Philippe Sigaud]

> I made two, but not as cool as yours: http://dpaste.dzfl.pl/32536704


I like this one :)

I think this part:

static T readArgs(T)(string[] args)
{
T ret;
pragma(msg, "getopt(args"~buildGetOptArguments!(T, "ret")~");");
mixin("getopt(args"~buildGetOptArguments!(T, "ret")~");");
 return ret;
}


Could be slightly simplified somewhat. Try passing 'ret' as an alias. That
way, buildGetOptArguments should be able to create the "ret" string by
itself, like this:


private static string buildGetOptArguments(T, alias instance)()
{
    enum string instanceName = instance.stringof; // for example
...

And I'd have buildGetOptArguments return the "getopt(args" ... ")" part
also.
Which gives:

T readArgs(T)(string[] args)
{
T ret;
pragma(msg, buildGetOptArguments!(T, ret));
mixin(buildGetOptArguments!(T, ret)~";");
 return ret;
}
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