Not much to contribute here but I'm glad to see that you're working in this area! I felt a little lonely lately. :-)
On 22.12.2005 10:13:37 Simon Pepping wrote: > I have tried to removed the double-list return type (a list of > KnuthSequences) of InlineLevelLM.getNextKnuthElements. I have > abandoned those efforts. > > If the return type is only a single list, the call stack has to return > to LineLM.getNextKnuthElements for every completed paragraph and every > sequence of block elements. This is certainly possible, and was the > case in the past. It is true that most paragraphs consist of only one > Knuth paragraph, and do not contain block content. For those > paragraphs a single list return type would be efficient. > > It would require look-ahead: Can the next sequence of Knuth elements > be appended to this one? And caching the sequence if not. Probably not > a big deal. > > Nevertheless, I do not feel inspired to code this only for sake of the > return type. > > Having an inherited method with a list with different types of content > elements will be a problem when we would ever use type-safe > collections. I would prefer to tackle this by defining a return type > KnuthSequences, which would be able to hold a single KnuthSequence or > a list of KnuthSequences, with logic to handle both cases > transparently for its clients. > > I thought you may wish to know these considerations. > > Simon > > -- > Simon Pepping > home page: http://www.leverkruid.nl Jeremias Maerki
