Using custom attribute for a general parser. Is possible in D ?

[bioinfornatics via Digitalmars-d-learn]

I bask originally this qustion in this thread :
http://forum.dlang.org/post/rsnswykpjfzenplivkhm@forum.dlang.org

but another thread is better as that is not exactly same topic.


I would like to use custom annotate/attribute on members as:


struct A
{
         @Parser(
                  start = "( word ) =>  word[0] == '>'",
                  end   = "( word ) =>  word[0] == '\n'" )
         string header;

}


but it seem we can't use curstom annotation in D and mxin in this
case are not easy.

This custom attribute is a metadata to explain how to retrieve
this field from a file. This will aloow to create a global parser
and give to this parrser data structure to get back.
Parser could to b an input range were
hront give currentfilled  struct and popfront will look foward in
buffer given by file.byChunk() using this metadata.
When all field are filled give the instance to front …