{"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\/et\/blog\/novosti-interneta\/re2c-4-0","title":{"rendered":"re2c 4.0","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

<\/p>\n

Teisip\u00e4eval, 19. novembril, esitleti v\u00e4ljaanne re2c<\/a> – leksikaalanal\u00fcsaatorite generaator (ka regulaarsete v\u00e4ljendite kompilaator sihtkeele koodiks). re2c spetsialiseerub kiirete ja lihtsalt integreeritavate leksikonide genereerimisele. See erineb tuntumast analoogist flex oma paindliku liidese, optimeeritud tabelivaba leksikonide genereerimise ja siltide (tag) p\u00f5hjal tehtud alam\u00fclemite (submatch extraction) toetamisega, mis p\u00f5hinevad determinantsetel l\u00f5ppautomaatidel (TDFA<\/a>). re2c-d kasutatakse projektides, kus on oluline leksika kiirus, n\u00e4iteks Ninja ja PHP.<\/p>\n

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

Versioonis 4.0 on koodigeneratsiooni s\u00fcsteem p\u00f5hjalikult \u00fcle vaadatud, mis on v\u00f5imaldanud lisada toe kaheksale uuele keelele (D, Haskell, Java, JavaScript, OCaml, Python, V, Zig) olemasolevatele (C\/C++, Go, Rust) ning lisada \u00fcldine mehhanism uute keelte lisamiseks konfiguratsioonifailide kaudu. Koodigeneraator vastutab juba koostatud ja optimeeritud l\u00f5ppautomaatide t\u00f5lkimise eest koodiks, st selle \u00fclesanne on valida sihtkeelele sobivad juhtimisstruktuurid, andmet\u00fc\u00fcbid, programmi \u00fcldine mudel jne. Varasemalt oli kogu see loogika osa re2c l\u00e4htekoodist ja selle muutmiseks v\u00f5i uue keele lisamiseks tuli l\u00e4htekood uuesti kompileerida ja pat\u0161ida. Sellised pat\u0161id ei olnud p\u00f5hihoidlas aktsepteeritud ilma standardsete n\u00e4idiste ja testide rakendamiseta, mis muudab kogu protsessi veelgi keerulisemaks. N\u00fc\u00fcd on kogu see loogika viidud s\u00fcntaksifailidesse<\/a> – tekstilised konfiguratsioonifailid, mida kasutaja v\u00f5ib esitada (vaikimisi kasutab re2c standardeid). re2c algkood on t\u00e4ielikult vaba konkreetse keele detailidest ja toetub ainult s\u00fcntaktifailile. Kasutaja saab osaliselt \u00fcle kirjutada olemasoleva s\u00fcntaktifaili v\u00f5i kirjutada uue nullist. K\u00f5igi ametlikult toetatud keelte jaoks on t\u00e4ielik dokumentatsioon koos n\u00e4idistega<\/a>.<\/p>\n

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

Muide, s\u00fcntaksifailide idee p\u00e4rineb \u00fche kommentaari t\u00f5ttu LOR-is<\/a>, mille eest suur t\u00e4nu \"re2cthe_coder<\/a>.<\/p>\n

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

V\u00e4ljalaske on sisse viidud palju muid muudatusi kasutajaliidese lihtsustamiseks, haaravate gruppide (capturing groups) t\u00f6\u00f6 parandamiseks ja lisatud on veebikeskkond n\u00e4idiste redigeerimiseks ja kompileerimiseks: http:\/\/re2c.org\/playground<\/a>.<\/p>\n

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

Allikas: 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-novosti-interneta"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\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\n","aioseo_head_json":{"title":"\ud83e\udd47re2c 4.0 | ProHoster","description":"Teisip\u00e4eval, 19. novembril, esitleti re2c - lexikaalanal\u00fcsaatorite generaatorit (samuti regulaaravaldiste kompilaator sihtkeele koodi). re2c keskendub kiirete ja h\u00f5lpsasti integreeritavate lexikute genereerimisele. See erineb tuntumast analoogist flex paindliku kasutajaliidese, optimeeritud tabeliteta lexikute genereerimise ja toetuse poolest submatch extraction, mis p\u00f5hineb deterministlikel l\u00f5ppautomaatidel.","canonical_url":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/re2c-4-0","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"et_EE","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47re2c 4.0 | ProHoster","og:description":"\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 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