Re: [Chicken-users] Some syntax help?
The incorrect code that CSC allows other things to work on: This should have stated CSI. -Dan On Sat, May 2, 2015 at 8:01 AM, Dan Leslie d...@ironoxide.ca wrote: Hi Chickeners! Around two weeks ago I received a bug report that the monad egg wasn't working in CSC. This turned out to be the result of a syntax error, and though I've greatly simplified the syntax and narrowed the issue considerably, I find myself stuck in a corner while surrounded by wet paint. Working branch is here: https://github.com/dleslie/monad-egg/tree/compiler-import-bug The issue is thus: the egg does some heavy lifting of syntax transforms, and there exists a utility such that a user might bind new symbols while within the quoted syntax of a stack of transformers. It looks like this: (do state (/m! put 99) (x - (/m get)) (return x)) Which would expand to something similar to: (state-bind (state-put 99) (state-bind (state-get) (lambda (x) (state-unit x I think; it's early. ;) Anyhow, notice that the /m and /m! transforms occur within the do syntax; the do syntax transforms through do-using, %unroll-do-using, and finally to using; where they're defined dynamically within a quoted syntax block. Here's the wierdness: this works magnificently in CSI, but fails in CSC. Moreover, if I replace /m! with a broken variant then /m works great in both CSI and CSC! I know, it doesn't make much sense to me either. My best guess is that /m! failing somehow short-circuits a code path in the compiler and so allows /m to function as I expect. The correct code that CSC breaks on: https://github.com/dleslie/monad-egg/blob/compiler-import-bug/monad.scm#L58-L61 And test output: https://gist.github.com/71cc934fbc9fc7fa2d86 The incorrect code that CSC allows other things to work on: https://github.com/dleslie/monad-egg/blob/compiler-import-bug/monad.scm#L63-L66 And test output: https://gist.github.com/d0c276f7ed243d79166b Any thoughts would be appreciated. :D Thanks! -- -Dan Leslie ___ Chicken-users mailing list Chicken-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/chicken-users
[Chicken-users] Some syntax help?
Hi Chickeners! Around two weeks ago I received a bug report that the monad egg wasn't working in CSC. This turned out to be the result of a syntax error, and though I've greatly simplified the syntax and narrowed the issue considerably, I find myself stuck in a corner while surrounded by wet paint. Working branch is here: https://github.com/dleslie/monad-egg/tree/compiler-import-bug The issue is thus: the egg does some heavy lifting of syntax transforms, and there exists a utility such that a user might bind new symbols while within the quoted syntax of a stack of transformers. It looks like this: (do state (/m! put 99) (x - (/m get)) (return x)) Which would expand to something similar to: (state-bind (state-put 99) (state-bind (state-get) (lambda (x) (state-unit x I think; it's early. ;) Anyhow, notice that the /m and /m! transforms occur within the do syntax; the do syntax transforms through do-using, %unroll-do-using, and finally to using; where they're defined dynamically within a quoted syntax block. Here's the wierdness: this works magnificently in CSI, but fails in CSC. Moreover, if I replace /m! with a broken variant then /m works great in both CSI and CSC! I know, it doesn't make much sense to me either. My best guess is that /m! failing somehow short-circuits a code path in the compiler and so allows /m to function as I expect. The correct code that CSC breaks on: https://github.com/dleslie/monad-egg/blob/compiler-import-bug/monad.scm#L58-L61 And test output: https://gist.github.com/71cc934fbc9fc7fa2d86 The incorrect code that CSC allows other things to work on: https://github.com/dleslie/monad-egg/blob/compiler-import-bug/monad.scm#L63-L66 And test output: https://gist.github.com/d0c276f7ed243d79166b Any thoughts would be appreciated. :D Thanks! -- -Dan Leslie ___ Chicken-users mailing list Chicken-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/chicken-users
[Chicken-users] Termbox using
Hi, (Sorry for my English) Newbie with Scheme, i try to use the termbox egg. It seems me a very nice and cool library and the documentation helps me a lot. I am learning Scheme and appreciate Chicken implementation. Here a little piece of code to print a simple text menu. But this code isn't in the functionnal way (very iterative). (use termbox) (init) (define running (make-parameter #t)) (define choice 1) (define (menu x y lst) (let loop () (if ( choice (length lst)) (set! choice 1)) (if ( choice 1) (set! choice (length lst))) (do ((i 0 (+ i 1))) ((= i (length lst))) (if (= choice (+ i 1)) (bprintf x (+ y i) (style black) (style white) (list-ref lst i)) (bprintf x (+ y i) (style white) (style black) (list-ref lst i (present) (poll (lambda (mod key ch) (cond ((eq? key key-arrow-down) (set! choice (+ choice 1))) ((eq? key key-arrow-up) (set! choice (- choice 1))) ((eq? key key-enter) (running #f (lambda (w h) (loop))) (when (running) (loop ;; an example (menu 5 8 '(Choice 1 Choice 2 Choice 3 Other)) (shutdown) (printf Your choice: ~a\n choice) Maybe, someone could give me some advices or corrections to make it better. Regards, frad http://blog.indexi.net ___ Chicken-users mailing list Chicken-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/chicken-users
[Chicken-users] MSYS2 as Windows build platform?
Hello, chickeneers-- As a by-product of my recent adventure in packaging Chicken for Windows, I discovered MSYS2. MSYS2 is an updated version of the venerable MSYS, with 64-bit support and an optional MinGW environment, ported from mingw-w64. It offers a large selection of packages, uses the Pacman package manager from Arch Linux, and has pretty good documentation. While I can't claim extensive experience with this project, it gave me a very good impression. It seems well put-together - a bit more of a polished and complete product than either the old MSYS or mingw-w64. The documentation, while not very extensive, as far as I can tell is accurate, up-to-date, and covers all the essential info you need in order to use the system. And there seems to be a small but dedicated group of developers working with the project. So I think that MSYS2 may be a superior platform for developing with Chicken on Windows, and I would encourage any of you Microsoftians to check it out. So far I have been able to compile and install Chicken, and run 'csi' with no apparent problems in a standard Windows command shell; there are some issues with using csc and chicken-install, but they seem to be mostly related to problems with paths, so I imagine they can be worked out. Let me know if you decide to try it out. There are a few simple but not very obvious steps involved in getting to where I've gotten. Here's the project homepage: https://msys2.github.io/ And documentation: http://sourceforge.net/p/msys2/wiki/Home/ -- Matt Gushee ___ Chicken-users mailing list Chicken-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/chicken-users
Re: [Chicken-users] Some syntax help?
And thanks to your feedback the branch is now passing the available tests. Turns out that (syntax) was allowing the two-modules-in-one-file thing to work. Taking that out caused... Problems. ;) -- -Dan Leslie ___ Chicken-users mailing list Chicken-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/chicken-users
