{"id":120643,"date":"2024-11-21T01:09:45","date_gmt":"2024-11-20T23:09:45","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/re2c-4-0"},"modified":"2024-11-21T01:09:45","modified_gmt":"2024-11-20T23:09:45","slug":"re2c-4-0","status":"publish","type":"post","link":"https:\/\/prohoster.info\/lv\/blog\/news\/re2c-4-0","title":{"rendered":"re2c 4.0","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

<\/p>\n

Otrdien, 19. novembr\u012b, tika prezent\u0113ts izlaidums re2c<\/a> – leksisko anal\u012bzes \u0123eneratora (tas pats regul\u0101ro izteiksmju kompilators uz m\u0113r\u0137a programm\u0113\u0161anas valodu). re2c ir specializ\u0113jies \u0101tru un viegli integr\u0113jamu leksiku \u0123ener\u0113\u0161an\u0101. Tas at\u0161\u0137iras no paz\u012bstam\u0101 analoga flex ar elast\u012bgu saskarni, optimiz\u0113tu ne-tabul\u0101ro leksiku \u0123ener\u0113\u0161anu un atbalstu saskarsm\u0113m (submatch extraction), pamatojoties uz determin\u0113t\u0101m beigu autom\u0101tu ar mar\u0137\u0113jumiem (TDFA<\/a>). re2c tiek izmantots projektos, kur leksora \u0101trums ir svar\u012bgs, piem\u0113ram, Ninja un PHP.<\/p>\n

<\/noindex><\/noindex> <\/p>\n

Versij\u0101 4.0 tika radik\u0101li p\u0101rstr\u0101d\u0101ta koda \u0123ener\u0113\u0161anas apak\u0161sist\u0113ma, kas \u013c\u0101va pievienot atbalstu asto\u0146\u0101m jaun\u0101m valod\u0101m (D, Haskell, Java, JavaScript, OCaml, Python, V, Zig) papildus jau atbalst\u012btaj\u0101m (C\/C++, Go, Rust), k\u0101 ar\u012b kop\u0113jam meh\u0101nismam jaunu valodu pievieno\u0161anai caur konfigur\u0101cijas failiem. Koda \u0123enerators ir atbild\u012bgs par jau izveidota un optimiz\u0113ta beigu autom\u0101ta p\u0101rv\u0113r\u0161anu kod\u0101, proti, t\u0101 uzdevums ir izv\u0113l\u0113ties piem\u0113rot\u0101s kontrol strukt\u016bras, datu tipus, kop\u0113jo programmas modeli utt. Agr\u0101k visa \u0161\u012b lo\u0123ika bija da\u013ca no re2c avota koda, un, lai to main\u012btu vai pievienotu jaunu valodu, bija j\u0101veic izmai\u0146as avota kod\u0101 un j\u0101p\u0101rb\u016bv\u0113 re2c. L\u012bdz\u012bgas izmai\u0146as netika pie\u0146emtas galvenaj\u0101 repozitorij\u0101 bez standarta piem\u0113ru un testu \u012bsteno\u0161anas, kas papildu apgr\u016btin\u0101ja visu procesu. Tagad visa \u0161\u012b lo\u0123ika ir p\u0101rvietota sintaktiskajiem failiem<\/a> – teksta konfigur\u0101cijas failos, kurus var nodro\u0161in\u0101t lietot\u0101js (p\u0113c noklus\u0113juma re2c izmanto standarta failus). re2c avota kods ir piln\u012bb\u0101 br\u012bvs no konkr\u0113t\u0101s valodas deta\u013c\u0101m un pa\u013caujas tikai uz sintaktisko failu. Lietot\u0101js var da\u013c\u0113ji p\u0101rrakst\u012bt eso\u0161o sintaktisko failu vai uzrakst\u012bt jaunu no nulles. Vis\u0101m ofici\u0101li atbalst\u012btaj\u0101m valod\u0101m ir pilna dokument\u0101cija ar piem\u0113riem<\/a>.<\/p>\n

<\/noindex> <\/p>\n

Starp citu, pati idea par sintaktiskajiem failiem rad\u0101s, pateicoties vienam koment\u0101ram LOR\u0101<\/a>, par ko paldies \"re2cthe_coder<\/a>.<\/p>\n

<\/noindex> <\/p>\n

Izlaidum\u0101 ir iek\u013cauti daudz citu izmai\u0146u, kas vienk\u0101r\u0161o lietot\u0101ja saskarni, uzlabo darbu ar saisto\u0161\u0101m grup\u0101m (capturing groups), k\u0101 ar\u012b tika pievienota tie\u0161saistes vide piem\u0113ru redi\u0123\u0113\u0161anai un kompil\u0113\u0161anai: http:\/\/re2c.org\/playground<\/a>.<\/p>\n

<\/noindex><\/p>\n

Avots: linux.org.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0412\u043e \u0432\u0442\u043e\u0440\u043d\u0438\u043a, 19 \u043d\u043e\u044f\u0431\u0440\u044f, \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d \u0440\u0435\u043b\u0438\u0437 re2c – \u0433\u0435\u043d\u0435\u0440\u0430\u0442\u043e\u0440\u0430 \u043b\u0435\u043a\u0441\u0438\u0447\u0435\u0441\u043a\u0438\u0445 \u0430\u043d\u0430\u043b\u0438\u0437\u0430\u0442\u043e\u0440\u043e\u0432 (\u043e\u043d \u0436\u0435 \u043a\u043e\u043c\u043f\u0438\u043b\u044f\u0442\u043e\u0440 \u0440\u0435\u0433\u0443\u043b\u044f\u0440\u043d\u044b\u0445 \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u0439 \u0432 \u043a\u043e\u0434 \u043d\u0430 \u0446\u0435\u043b\u0435\u0432\u043e\u043c \u044f\u0437\u044b\u043a\u0435 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f). re2c \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u0438\u0437\u0438\u0440\u0443\u0435\u0442\u0441\u044f \u043d\u0430 \u0433\u0435\u043d\u0435\u0440\u0430\u0446\u0438\u0438 \u0431\u044b\u0441\u0442\u0440\u044b\u0445 \u0438 \u043b\u0435\u0433\u043a\u043e \u0432\u0441\u0442\u0440\u0430\u0438\u0432\u0430\u0435\u043c\u044b\u0445 \u043b\u0435\u043a\u0441\u0435\u0440\u043e\u0432. \u041e\u043d \u043e\u0442\u043b\u0438\u0447\u0430\u0435\u0442\u0441\u044f \u043e\u0442 \u0431\u043e\u043b\u0435\u0435 \u0438\u0437\u0432\u0435\u0441\u0442\u043d\u043e\u0433\u043e \u0430\u043d\u0430\u043b\u043e\u0433\u0430 flex \u0433\u0438\u0431\u043a\u0438\u043c \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441\u043e\u043c, \u0433\u0435\u043d\u0435\u0440\u0430\u0446\u0438\u0435\u0439 \u043e\u043f\u0442\u0438\u043c\u0438\u0437\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0445 \u043d\u0435\u0442\u0430\u0431\u043b\u0438\u0447\u043d\u044b\u0445 \u043b\u0435\u043a\u0441\u0435\u0440\u043e\u0432 \u0438 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u043e\u0439 \u0437\u0430\u0445\u0432\u0430\u0442\u043e\u0432 (submatch extraction) \u043d\u0430 \u043e\u0441\u043d\u043e\u0432\u0435 \u0434\u0435\u0442\u0435\u0440\u043c\u0438\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0445 \u043a\u043e\u043d\u0435\u0447\u043d\u044b\u0445 \u0430\u0432\u0442\u043e\u043c\u0430\u0442\u043e\u0432 \u0441 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":120644,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-120643","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47re2c 4.0 | ProHoster","description":"Otrdien, 19. novembr\u012b, tika prezent\u0113ts re2c \u2013 leksisko anal\u012bzatoru \u0123enerators (t\u0101pat k\u0101 regul\u0101ro izteiksmju 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