{"id":89487,"date":"2020-07-23T01:42:30","date_gmt":"2020-07-22T23:42:30","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/re2c-2-0"},"modified":"2020-07-23T01:42:30","modified_gmt":"2020-07-22T23:42:30","slug":"re2c-2-0","status":"publish","type":"post","link":"https:\/\/prohoster.info\/nl\/blog\/news\/re2c-2-0","title":{"rendered":"re2c 2.0","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Op maandag 20 juli is de release van re2c - de generator voor snelle lexicale analizzers uitgebracht.<br \/>\nBelangrijkste wijzigingen:<\/p>\n<ul>\n<li>\n<p>Ondersteuning voor de programmeertaal Go is toegevoegd.<br \/>\n(geactiveerd of met de optie &#8212;lang go voor re2c, of als een afzonderlijk programma re2go).<br \/>\nDocumentatie voor C en Go wordt gegenereerd uit dezelfde tekst, maar met verschillende<br \/>\ncodevoorbeelden. Het subsystem voor codegeneratie in re2c is volledig herzien, wat<br \/>\nde ondersteuning van nieuwe talen in de toekomst zou moeten vergemakkelijken.<\/p>\n<\/li>\n<li>\n<noindex><\/p>\n<p>Een alternatieve bouwsysteem op CMake is toegevoegd (dank aan <a rel=\"nofollow\" href=\"https:\/\/github.com\/ligfx\">ligfx<\/a>!).<\/noindex><br \/>\nPogingen om re2c naar CMake te porteren zijn al lange tijd bezig, maar tot ligfx heeft niemand een<br \/>\nvolledige oplossing voorgesteld.<br \/>\nHet oude bouwsysteem op Autotools blijft worden ondersteund en gebruikt,<br \/>\nen er zijn op korte termijn geen plannen om daarvan af te stappen (deels om geen<br \/>\nproblemen te cre\u00ebren voor distributeurs, deels omdat het oude bouwsysteem<br \/>\nstabieler en beknopter is dan de nieuwe).<br \/>\nBeide systemen worden gelijktijdig continu getest met Travis CI.<\/p>\n<\/li>\n<li>\n<p>De mogelijkheid om interfacecode in configuraties op te geven bij gebruik van<br \/>\neen generiek API is toegevoegd. Vroeger moesten de meeste API's worden opgegeven in de vorm<br \/>\nvan functies of functionele macro's. Nu kunnen ze worden gedefinieerd in de vorm van willekeurige<br \/>\nstrings met benoembare sjabloonparameters zoals @@{name} of gewoon @@ (als er<br \/>\nslechts \u00e9\u00e9n parameter is en er geen ambigu\u00efteit ontstaat). De stijl van de API wordt opgegeven met de configuratie<br \/>\nre2c:api:style (de waarde functions bepaalt de functionele stijl, en free-form - willekeurig).<\/p>\n<\/li>\n<li>\n<p>De werking van de optie -c, &#8212;start-conditions is verbeterd, waardoor het mogelijk is om meerdere<br \/>\nonderling verbonden lexers in \u00e9\u00e9n re2c-blok kunnen worden gecombineerd. Nu kunnen gewone blokken<br \/>\nnaast voorwaardelijke blokken worden gebruikt en kunnen meerdere niet-verbonden voorwaardelijke<br \/>\nblokken in \u00e9\u00e9n bestand worden gedefinieerd.<br \/>\nDe werking van de optie -r, &#8212;reuse (hergebruik van code uit \u00e9\u00e9n blok<br \/>\nin andere blokken) in combinatie met de opties -c, &#8212;start-conditions en -f, &#8212;storable-state is verbeterd.<br \/>\n(een lexer met duurzaam estado, die op elk moment kan worden onderbroken<br \/>\nen later kan worden hervat) is verbeterd.<\/p>\n<\/li>\n<li>\n<p>Een bug in het recent toegevoegde algoritme voor het verwerken van het einde van de invoergegevens<br \/>\n(EOF-regel), die in zeldzame gevallen leidde tot onjuiste verwerking van<br \/>\noverlappende regels, is opgelost.<\/p>\n<\/li>\n<li>\n<p>Het opstartproces is vereenvoudigd. Eerder probeerde het bouwsysteem dynamisch een reeds<br \/>\ngebouwd re2c te vinden dat kon worden gebruikt voor het opnieuw bouwen van zichzelf.<br \/>\nDit leidde tot onjuiste afhankelijkheden (aangezien de afhankelijkheidsgrafiek dynamisch was, wat de meeste buildsystemen niet prettig vinden).<br \/>\ndynamisch, wat de meeste bouwsystemen niet leuk vinden).<br \/>\nNu is het nodig om de lexers expliciet te configureren in het buildsysteem en de variabele RE2C_FOR_BUILD in te stellen.<br \/>\nBedankt aan iedereen die heeft bijgedragen aan de voorbereiding van deze release!<\/p>\n<\/li>\n<\/ul>\n<p>\ud83e\udd47re2c 2.0 | ProHoster<\/p>\n<p>Bron: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"http:\/\/www.linux.org.ru\/news\/development\/15820642\">linux.org.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 \u043f\u043e\u043d\u0435\u0434\u0435\u043b\u044c\u043d\u0438\u043a 20 \u0438\u044e\u043b\u044f \u0432\u044b\u0448\u0435\u043b \u0440\u0435\u043b\u0438\u0437 re2c &ndash; \u0433\u0435\u043d\u0435\u0440\u0430\u0442\u043e\u0440\u0430 \u0431\u044b\u0441\u0442\u0440\u044b\u0445 \u043b\u0435\u043a\u0441\u0438\u0447\u0435\u0441\u043a\u0438\u0445 \u0430\u043d\u0430\u043b\u0438\u0437\u0430\u0442\u043e\u0440\u043e\u0432. \u041e\u0441\u043d\u043e\u0432\u043d\u044b\u0435 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f: \u0414\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u0430 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430 \u044f\u0437\u044b\u043a\u0430 Go (\u0432\u043a\u043b\u044e\u0447\u0430\u0435\u0442\u0441\u044f \u0438\u043b\u0438 \u043e\u043f\u0446\u0438\u0435\u0439 &#8212;lang go \u0434\u043b\u044f re2c, \u0438\u043b\u0438 \u0432 \u0432\u0438\u0434\u0435 \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u043e\u0439 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u044b re2go). \u0414\u043e\u043a\u0443\u043c\u0435\u043d\u0442\u0430\u0446\u0438\u044f \u0434\u043b\u044f C \u0438 Go \u0433\u0435\u043d\u0435\u0440\u0438\u0440\u0443\u0435\u0442\u0441\u044f \u0438\u0437 \u043e\u0434\u043d\u043e\u0433\u043e \u0438 \u0442\u043e\u0433\u043e \u0436\u0435 \u0442\u0435\u043a\u0441\u0442\u0430, \u043d\u043e \u0441 \u0440\u0430\u0437\u043d\u044b\u043c\u0438 \u043f\u0440\u0438\u043c\u0435\u0440\u0430\u043c\u0438 \u043a\u043e\u0434\u0430. \u041f\u043e\u043b\u043d\u043e\u0441\u0442\u044c\u044e \u043f\u0435\u0440\u0435\u0440\u0430\u0431\u043e\u0442\u0430\u043d\u0430 \u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c\u0430 \u043a\u043e\u0434\u043e\u0433\u0435\u043d\u0435\u0440\u0430\u0446\u0438\u0438 \u0432 re2c, \u0447\u0442\u043e [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-89487","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - 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