parenscript-devel June 2011

parenscript-devel@common-lisp.net

7 participants
6 discussions

[parenscript-devel] BLOCK/RETURN-FROM
by sblist＠me.com 12 Dec '11

12 Dec '11

Hi, I was wondering if the BLOCK/RETURN-FROM feature in PS intends to support the following case: (ps (defun foo () (flet ((bar () (return-from foo 42))) (bar)))) => WARNING: Returning from unknown block FOO "function foo() { var bar = function () { return 42; }; return bar(); };" In order to try and get around the warning, I tried this: (ps (defun baz () (block foo (flet ((bar () (return-from foo 42))) (bar))))) => WARNING: Returning from unknown block FOO "function baz() { var bar = function () { return 42; }; return bar(); };" but that didn't seem to work. Any ideas on how to achieve lexical return here? - Scott

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Re: [parenscript-devel] what's wrong?
by F D 12 Dec '11

12 Dec '11

Yes it helps. Many Thanks, I made a mistake and forgot to use a (lambda...) Is there something that can help to convert js code to parenscript code? FD

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[parenscript-devel] Bug in translation of / operator
by Leslie P. Polzer 28 Jun '11

28 Jun '11

Parenscript 2.3: ? (/ 2) 1/2 ? (ps:ps (/ 2)) "2;" ;; should be 1/2 Leslie -- Empfehlen Sie GMX DSL Ihren Freunden und Bekannten und wir belohnen Sie mit bis zu 50,- Euro! https://freundschaftswerbung.gmx.de

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[parenscript-devel] Possible bug in Parenscript 2.3 (*ps-lisp-library*)
by TeMPOraL 19 Jun '11

19 Jun '11

Hi, I am working on CCL and I have migrated from Parenscript 2.2 to 2.3, and now I get warnings (pasted below) when including Parenscript runtime library (*ps-lisp-library*). Generated Javascript has bugs; in particular, 'member' function always returns false. WARNING: CL-USER> (parenscript:ps* parenscript:*ps-lisp-library*) ; Warning: Returning from unknown block nilBlock ; While executing: PARENSCRIPT::RETURN-EXP, in process repl-thread(9). ; Warning: Returning from unknown block nilBlock ; While executing: PARENSCRIPT::RETURN-EXP, in process repl-thread(9). ; Warning: Returning from unknown block nilBlock ; While executing: PARENSCRIPT::RETURN-EXP, in process repl-thread(9). ; Warning: Returning from unknown block nilBlock ; While executing: PARENSCRIPT::RETURN-EXP, in process repl-thread(9). ; Warning: Trying to (RETURN TRUE) from inside a loop with an implicit nil block (DO, DOLIST, DOTIMES, etc.). Parenscript doesn't support returning values this way from inside a loop yet! ; While executing: #<Anonymous Function #x9D6C98E>, in process repl-thread(9). ; Warning: Returning from unknown block nilBlock ; While executing: PARENSCRIPT::RETURN-EXP, in process repl-thread(9). ; Warning: Returning from unknown block nilBlock ; While executing: PARENSCRIPT::RETURN-EXP, in process repl-thread(9). ; Warning: Returning from unknown block nilBlock ; While executing: PARENSCRIPT::RETURN-EXP, in process repl-thread(9). Result: (...) /** Check if ITEM is a member of ARR. */ function member(item, arr) { for (var el = null, _js_idx176 = 0; _js_idx176 < arr.length; _js_idx176 += 1) { el = arr[_js_idx176]; if (el === item) { break; }; }; return false; }; (...) Regards, -- Jacek Złydach, http://temporal.pr0.pl/devblog TRC - Bringing you tomorrow's solutions yesterday.

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[parenscript-devel] Conditional nesting of lisp and javascript code
by Slobodan Milnović 02 Jun '11

02 Jun '11

Hi! I'm not sure what expressions/terms should I use for my situation, but I'll try my best to explain it. I have several functions combined under one ps:ps, and I'd like to create different code depending on my, let's call it debug variable. I have tried something like this: (ps:ps (defun my-function (some-var) (ps:lisp (when (= my-debug-level debug-level-of-this-code) (ps:ps (ps:chain console (log "works!!!"))))) (generate some fancy regular javascript code))) Unfortunatelly, when the inner ps does its thing, it creates an string, which then outer ps just attaches (and escapes appropriately) as string, not as additional javascript code that is to be attached to the rest. Is it possible to do this, or do I have to rethink my code?

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[parenscript-devel] js-expander broken with recent changes to slime
by Andy Peterson 01 Jun '11

01 Jun '11

Recent changes to slime (quicklisp version) have broken the js-expander Slime Changelog: 2011-03-09 Helmut Eller <heller(a)common-lisp.net> Remove slime-sexp-at-point-for-macroexpansion. * slime.el (slime-sexp-at-point-for-macroexpansion): Deleted. (slime-eval-macroexpand): Use slime-sexp-at-point instead. (slime-eval-macroexpand-inplace): Use slime-bounds-of-sexp-at-point directly. I believe this fix should work but my slime fu is weak. $ diff js-expander.el ../../js-expander.el 40c40 < (first (slime-sexp-at-point-for-macroexpansion)) --- > (slime-sexp-at-point)

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parenscript-devel June 2011