{"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\/en\/blog\/news\/re2c-2-0","title":{"rendered":"re2c 2.0","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>On Monday, July 20, the release of re2c \u2013 a generator of fast lexical analyzers \u2013 was announced.<br \/>\nKey Changes:<\/p>\n<ul>\n<li>\n<p>Support for the Go language has been added.<br \/>\n(enabled either via the option \u2014lang go for re2c, or as a separate program re2go).<br \/>\nDocumentation for C and Go is generated from the same text, but with different<br \/>\ncode examples. The code generation subsystem in re2c has been completely revamped, which<br \/>\nshould facilitate the support of new languages in the future.<\/p>\n<\/li>\n<li>\n<noindex><\/p>\n<p>An alternative build system using CMake has been added (thanks to <a rel=\"nofollow\" href=\"https:\/\/github.com\/ligfx\">ligfx.<\/a>!).<\/noindex><br \/>\nAttempts to port re2c to CMake have been made for a long time, but until ligfx, no one<br \/>\noffered a comprehensive solution.<br \/>\nThe old build system based on Autotools continues to be supported and used,<br \/>\nand there are no plans in the foreseeable future to discard it (partly to avoid creating<br \/>\nproblems for distribution developers, partly because the old build system<br \/>\nis more stable and concise than the new one).<br \/>\nBoth systems are continuously tested using Travis CI.<\/p>\n<\/li>\n<li>\n<p>The ability to specify interface code in configurations when using a<br \/>\ngeneric API has been added. Previously, most APIs had to be defined in the form of<br \/>\nfunctions or functional macros. Now they can be defined as arbitrary<br \/>\nstrings with named template parameters like @@{name} or simply @@ (if<br \/>\nthere is only one parameter and no ambiguity arises). The API style is set through the configuration<br \/>\nre2c:api:style (the value functions sets the functional style, while free-form is arbitrary).<\/p>\n<\/li>\n<li>\n<p>The -c, \u2014start-conditions option has been improved, allowing the combination of multiple<br \/>\ninterrelated lexers in a single re2c block. Now, regular blocks can be used alongside conditional ones, and several unrelated conditional<br \/>\nblocks can be defined in one file.<br \/>\nThe usability of the -r, \u2014reuse option (code reuse from one block<br \/>\nThe -r, \u2014reuse option (reusing code from one block<br \/>\nin other blocks) has been enhanced in conjunction with the -c, \u2014start-conditions and -f, \u2014storable-state options.<br \/>\nand resumed later).<br \/>\nA bug in the recently added algorithm for processing the end of input data<\/p>\n<\/li>\n<li>\n<p>(EOF rule) was fixed, which in rare cases led to incorrect processing<br \/>\nof overlapping rules.<br \/>\nThe bootstrap process has been simplified. Previously, the build system attempted to dynamically find an already<\/p>\n<\/li>\n<li>\n<p>compiled re2c that could be used to rebuild itself.<br \/>\na built re2c that could be used to rebuild itself.<br \/>\nThis led to incorrect dependencies (since the dependency graph became<br \/>\ndynamic, which most build systems dislike).<br \/>\nNow, to rebuild the lexers, it is necessary to explicitly<br \/>\nconfigure the build system and set the RE2C_FOR_BUILD variable.<\/p>\n<\/li>\n<\/ul>\n<p>Thank you to everyone who participated in preparing this release!<\/p>\n<p>Source: <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 5.0.2 - aioseo.com -->\n\t<meta name=\"description\" content=\"\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 \u2013 \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.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" 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