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https://stackoverflow.com/questions/2081862/how-do-i-match-unicode-characters-in-antlr
How do I match unicode characters in antlr. Ask Question Asked 9 years, 10 months ago. ... True, but I thought Java doesn't support five-digit Unicode yet. – Lezan Jan 17 '10 at 19:24. With \u00FF, we're not in 5 digit Unicode country yet; that's only 2 so far. There's still all …
https://github.com/antlr/antlr4/blob/master/doc/unicode.md
Mar 30, 2017 · Lexers and Unicode text. Prior to ANTLR 4.7, generated lexers in most targets only supported part of the Unicode standard (code points up to U+FFFF). As of ANTLR 4.7, the lexers in all language runtimes support the full range of Unicode code points up to U+10FFFF.
What is ANTLR? ANTLR (ANother Tool for Language Recognition) is a powerful parser generator for reading, processing, executing, or translating structured text or binary files. It's widely used to build languages, tools, and frameworks. From a grammar, ANTLR generates a …
https://marketplace.visualstudio.com/items?itemName=mike-lischke.vscode-antlr4
Syntax coloring for ANTLR grammars (.g and .g4 files) ... Added full Unicode support for identifier generation and a dedicated test for this. Still, the sentence generator is not yet available in the editor. Overhaul of most of the used extension icons (with support for light + dark themes).
https://github.com/antlr/antlr4/issues/276
Jun 04, 2013 · If I'm reading this right, ANTLR does not currently support 32-bit characters in the lexer definition. If I want to do so, I need to decode it to the UTF-16 encoding and set the ranges as follows: '\uD812' '\uDC34'..'\uDFFF' Is this correct? If so, is there plans to support entering arbitrary Unicode in lexer definitions?
https://github.com/antlr/antlr4/blob/master/doc/lexicon.md
Apr 13, 2017 · You can use Unicode code points directly within literals or use the Unicode escape sequences: grammar Foreign; a : '外' ; The recognizers that ANTLR generates assume a character vocabulary containing all Unicode characters. The input file encoding assumed by the runtime library depends on the target language.
https://www.antlr.org/api/Java/org/antlr/v4/runtime/CharStreams.html
The motivation was to support Unicode code points > U+FFFF. ANTLRInputStream and ANTLRFileStream are now deprecated in favor of the streams created by this interface. ... Per the ANTLR book, unbuffered streams are primarily useful for processing infinite streams *during the parse.*
https://github.com/mike-lischke/vscode-antlr4
Dec 20, 2019 · Enhanced parsing support for tests, with an overhaul of the lexer and parser interpreters. Textual parse trees now include a list of recognized tokens. Improved sentence generation, using weight based ATN graph traveling. Added full Unicode support for identifier generation and a …
https://www.antlr2.org/doc/lexer.html
Scanning Unicode Characters. ANTLR (as of 2.7.1) allows you to recognize input composed of Unicode characters; that is, you are not restricted to 8 bit ASCII characters. I would like to emphasize that ANTLR allows, but does yet not support Unicode as there is more work to be done. For example, end-of-file is currently incorrectly specified:
https://soft-gems.net/the-antlr4-c-target-is-here/
So far I’ve been an enthusiastic user of ANTLR3, mostly for the MySQL Workbench product, where I based all the parsing infrastructure on the ANTLR3 C runtime. However, with the appearence of v4 a few years ago this ANTLR version got outdated and the support for it decreased constantly since then.
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