At 11:40 15/1/01 -0500, James Cook wrote: >I dont agree that having a runtime tree (of variables) adds complexity. It >is already there in the code now, and it is extremely simple to understand >and maintain. It also has the benefit of maintaining scope because it is not >flat.
I am not advocating a flat space - just the appearance of a flat space to a task writer (unless they are one of the few who set properties and may need to crawl up the tree). >Keeping it in the engine means that you don't have to pass anything >around either. This is patterned after the concepts of an interpreted >language or a compiler, so we can feel sure that it works well. Okay - now I am confused ;) From what I understand you now have three trees. 1. Proxy tree - contains the data required to build the tasks 2. Runtime tree - contains the actual task instances 3. Data tree - contains the properties, stack trace, etc So obviously I have got something wrong. Feel free to correct me ;) >> >Also, scripting support would benefit greatly from being able to >> dynamically >> >change the execution path, >> >> -1 >> Execution path should *never* in my opinion outside of a very few rare >> occasions (ant-call comes to mind) be able to do this thou YMMV ;) > >YMMV? your mileage may vary ;) >The execution path of a build script should be open to modification if the >user requires it. Why not? If it is not necessary for a particular user, >then they don't have to use it. It comes free with the design. I can't >imagine why we would want to keep this power out of the hands of the power >user if it can be completely transparent to those who don't want to use it. Just because you can - doesn't mean you should ;) That would be the flexability syndrome. Obviously I don't understand your design thou so I could be wrong but it seems the only reason you need the runtime tree (as defined in 2 above) is so you can do this. If you didn't need this then you could do away with tree 2 all together ... Cheers, Pete *-----------------------------------------------------* | "Faced with the choice between changing one's mind, | | and proving that there is no need to do so - almost | | everyone gets busy on the proof." | | - John Kenneth Galbraith | *-----------------------------------------------------*
