gezira

/gezira/tree/master/js/demos (downloadable and runnable in browser) KScript, UI building on top of Nile: https://www.freudenbergs.de/bert/publications/Ohshima-2013-K... http://tinlizzie.org/dbjr/KSWorld.ks/ Final Viewpoint Research Institute report, where the entire system (antialiasing, font rendering, svg, etc) was rendered using Nile into Frank, the word/excel/powerpoint equivalent written completely in Nile + Gezira + KScript): http://www.vpri.org/pdf/tr2012001_steps.pdf VPRI wiki restored from archive.org: https://web.archive.org/web/20171121105004/http://www.vpri.o... Shadama, which the Nile author (Dan Amelang) worked on too: https://2017.splashcon.org/event/live-2017-shadama-a-particl... Partial DOM reimplementation on top of Gezira: https://github.com/damelang/mico/blob/master/gezira/svg.js Partial reimplementation of Gezira: https://github.com/Twinside/Rasterific And the famous Nile Viewer itself (everything interactive): http://tinlizzie.org/dbjr/high_contrast.html https://github.com/damelang/nile/tree/master/viz/NileViewer Commentary: http://lambda-the-ultimate.org/node/4325#comment-66502 https://fonc.vpri.narkive.com/rtIMYQdk/nile-gezira-was-re-1-... http://forum.world.st/Vector-Graphics-was-Pi-performance-fun... Since Alan Kay himself is on Hacker News, maybe he can comment with more links I couldn't find. It's hard to fire up the live Frank environment, though understandably reproducing the working env might not have been a top goal. Maybe someone more cunning can merge these into a single executable repo or whatever so that I can stop playing archaeologist =)

gh this implementation is function based and doesn't really provide a proper streaming abstraction as provided by Nile. [4] [1]: https://github.com/damelang/gezira/tree/master/js [2]: http://piumarta.com/software/maru/ [3]: http://tinlizzie.org/updates/exploratory/packages/ [4]: https://hackage.haskell.org/package/Rasterific

while (input.length) { var a_x = input.shift(); var a_y = input.shift(); var b_x = input.shift(); var b_y = input.shift(); var c_x = input.shift(); var c_y = input.shift(); var _1_x = Math.floor(a_x); var _1_y = Math.floor(a_y); var _2_x = Math.floor(c_x); var _2_y = Math.floor(c_y); var _3_x = Math.ceil(a_x); var _3_y = Math.ceil(a_y); var _4_x = Math.ceil(c_x); var _4_y = Math.ceil(c_y); var _5_0 = _1_x == _2_x; var _5_1 = _1_y == _2_y; var _6_0 = _3_x == _4_x; var _6_1 = _3_y == _4_y; var _7_0 = _5_0 || _6_0; var _7_1 = _5_1 || _6_1; var _8 = _7_0 && _7_1; if (_8) { var p_x = _1_x < _2_x ? _1_x : _2_x; var p_y = _1_y < _2_y ? _1_y : _2_y; var w = p_x + 1 - ((c_x + a_x) / 2); var h = c_y - a_y; output.push(p_x, p_y, w, h); } else { var abbc_x = (((a_x + b_x) / 2) + ((b_x + c_x) / 2)) / 2; var abbc_y = (((a_y + b_y) / 2) + ((b_y + c_y) / 2)) / 2; var min_x = Math.floor(abbc_x); var min_y = Math.floor(abbc_y); var max_x = Math.ceil(abbc_x); var max_y = Math.ceil(abbc_y); var _9_x = Math.abs(abbc_x - min_x); var _9_y = Math.abs(abbc_y - min_y); var nearmin_0 = _9_x < 0.1; var nearmin_1 = _9_y < 0.1; var _11_x = Math.abs(abbc_x - max_x); var _11_y = Math.abs(abbc_y - max_y); var nearmax_0 = _11_x < 0.1; var nearmax_1 = _11_y < 0.1; var m_x = nearmin_0 ? min_x : (nearmax_0 ? max_x : abbc_x); var m_y = nearmin_1 ? min_y : (nearmax_1 ? max_y : abbc_y); input.unshift(a_x, a_y, (a_x + b_x) / 2, (a_y + b_y) / 2, m_x, m_y, m_x, m_y, (b_x + c_x) / 2, (b_y + c_y) / 2, c_x, c_y); } } downstream(output); }; }; Should be obvious why a DSL is preferred in this case. Although there are obviously some more succinct ways one could write it in the JS version, the constraints of trying to fit it into javascript syntax are probably not worth the effort, and it's unlikely you could ever get the same amount of information per character as an eDSL. Conventional language don't really overlook streaming because there's not really any one solution that fits all when it comes to it, so it's typically left as a library problem. [1]:https://github.com/damelang/gezira/blob/master/nl/rasterize.... [2]:https://github.com/damelang/gezira/blob/master/js/gezira.js#...