I want to write a rule for the following
INTEGER X;
IF GIBBERISH THEN
X = 10;
ELSE
X = 15;
END;
In the above program I want to write a terminal rule for any character in GIBBERISH like code('Xfr) or ADEF==DCF+1 something like that.
I wrote a terminal rule
// GIBBERISH
terminal GIBBERISH: (.)* ;
And I got this error
The following token definitions can never be matched because prior tokens match the same
input: RULE_ID,RULE_INT,RULE_STRING,RULE_ML_COMMENT,RULE_WS,RULE_ANY_OTHER
I also understand why this error message is being showed but anyways I want to override this.
Just not extend your grammar from Terminals rule. Remove extend string from grammar head and all these terminals will be removed.
Related
This question is based on this question. During coding, I got some new things popping up and because the initial question is properly answered, I want to describe my issues in this question.
My goal is to have a RegEx which filters out everything, instead of some special requirements:
Alphanumeric allowed
non-Lating e.g. Chinese or Japanese allowed
.,-?!"'=$|<>[]{} allowed
Works with NodeJS 8.9.4
During implementation of the answer from the main question, I've found out, that this only works with newer Node versions (because of the supported ES version). Sadly, our project runs on 8.9.4 which can't be changed in any way. So upgrading is not an option.
I've started searching around and found this page: https://github.com/slevithan/xregexp/blob/master/tools/output/categories.js
With the help of another question, I've tried to build something together which matches my requirements. I came out with:
/[^\(?:[A-Za-z\xAA\xB5\xBA\xC0-\xD6\xD8-\xF6\xF8-\u02C1\u02C6-\u02D1\u02E0-\u02E4\u02EC\u02EE\u0370-\u0374\u0376\u0377\u037A-\u037D\u037F\u0386\u0388-\u038A\u038C\u038E-\u03A1\u03A3-\u03F5\u03F7-\u0481\u048A-\u052F\u0531-\u0556\u0559\u0560-\u0588\u05D0-\u05EA\u05EF-\u05F2\u0620-\u064A\u066E\u066F\u0671-\u06D3\u06D5\u06E5\u06E6\u06EE\u06EF\u06FA-\u06FC\u06FF\u0710\u0712-\u072F\u074D-\u07A5\u07B1\u07CA-\u07EA\u07F4\u07F5\u07FA\u0800-\u0815\u081A\u0824\u0828\u0840-\u0858\u0860-\u086A\u0870-\u0887\u0889-\u088E\u08A0-\u08C9\u0904-\u0939\u093D\u0950\u0958-\u0961\u0971-\u0980\u0985-\u098C\u098F\u0990\u0993-\u09A8\u09AA-\u09B0\u09B2\u09B6-\u09B9\u09BD\u09CE\u09DC\u09DD\u09DF-\u09E1\u09F0\u09F1\u09FC\u0A05-\u0A0A\u0A0F\u0A10\u0A13-\u0A28\u0A2A-\u0A30\u0A32\u0A33\u0A35\u0A36\u0A38\u0A39\u0A59-\u0A5C\u0A5E\u0A72-\u0A74\u0A85-\u0A8D\u0A8F-\u0A91\u0A93-\u0AA8\u0AAA-\u0AB0\u0AB2\u0AB3\u0AB5-\u0AB9\u0ABD\u0AD0\u0AE0\u0AE1\u0AF9\u0B05-\u0B0C\u0B0F\u0B10\u0B13-\u0B28\u0B2A-\u0B30\u0B32\u0B33\u0B35-\u0B39\u0B3D\u0B5C\u0B5D\u0B5F-\u0B61\u0B71\u0B83\u0B85-\u0B8A\u0B8E-\u0B90\u0B92-\u0B95\u0B99\u0B9A\u0B9C\u0B9E\u0B9F\u0BA3\u0BA4\u0BA8-\u0BAA\u0BAE-\u0BB9\u0BD0\u0C05-\u0C0C\u0C0E-\u0C10\u0C12-\u0C28\u0C2A-\u0C39\u0C3D\u0C58-\u0C5A\u0C5D\u0C60\u0C61\u0C80\u0C85-\u0C8C\u0C8E-\u0C90\u0C92-\u0CA8\u0CAA-\u0CB3\u0CB5-\u0CB9\u0CBD\u0CDD\u0CDE\u0CE0\u0CE1\u0CF1\u0CF2\u0D04-\u0D0C\u0D0E-\u0D10\u0D12-\u0D3A\u0D3D\u0D4E\u0D54-\u0D56\u0D5F-\u0D61\u0D7A-\u0D7F\u0D85-\u0D96\u0D9A-\u0DB1\u0DB3-\u0DBB\u0DBD\u0DC0-\u0DC6\u0E01-\u0E30\u0E32\u0E33\u0E40-\u0E46\u0E81\u0E82\u0E84\u0E86-\u0E8A\u0E8C-\u0EA3\u0EA5\u0EA7-\u0EB0\u0EB2\u0EB3\u0EBD\u0EC0-\u0EC4\u0EC6\u0EDC-\u0EDF\u0F00\u0F40-\u0F47\u0F49-\u0F6C\u0F88-\u0F8C\u1000-\u102A\u103F\u1050-\u1055\u105A-\u105D\u1061\u1065\u1066\u106E-\u1070\u1075-\u1081\u108E\u10A0-\u10C5\u10C7\u10CD\u10D0-\u10FA\u10FC-\u1248\u124A-\u124D\u1250-\u1256\u1258\u125A-\u125D\u1260-\u1288\u128A-\u128D\u1290-\u12B0\u12B2-\u12B5\u12B8-\u12BE\u12C0\u12C2-\u12C5\u12C8-\u12D6\u12D8-\u1310\u1312-\u1315\u1318-\u135A\u1380-\u138F\u13A0-\u13F5\u13F8-\u13FD\u1401-\u166C\u166F-\u167F\u1681-\u169A\u16A0-\u16EA\u16F1-\u16F8\u1700-\u1711\u171F-\u1731\u1740-\u1751\u1760-\u176C\u176E-\u1770\u1780-\u17B3\u17D7\u17DC\u1820-\u1878\u1880-\u1884\u1887-\u18A8\u18AA\u18B0-\u18F5\u1900-\u191E\u1950-\u196D\u1970-\u1974\u1980-\u19AB\u19B0-\u19C9\u1A00-\u1A16\u1A20-\u1A54\u1AA7\u1B05-\u1B33\u1B45-\u1B4C\u1B83-\u1BA0\u1BAE\u1BAF\u1BBA-\u1BE5\u1C00-\u1C23\u1C4D-\u1C4F\u1C5A-\u1C7D\u1C80-\u1C88]+/g
My current example string is:
Test=😕查看
°°^ Marting 10202029 Offline!"§$%&/()!"§$%&/()After this we want to keep the allowed special chars: .,-?!"'=$|<>[]{}
Somehow, the answer from the first question works better as the parsed categories from me. So there must be something wrong, which I'm unable to find.
At the end, I want to put everything inside a var.replace() command, to replace everything bad with a single whitespace.
For testing, I'm using: https://regexr.com/
You can either use regexpu to transpile the regex into an ES6-compliant regex, or you may go to the Unicode Utilities: UnicodeSet page and get the code point ranges manually.
In your case, paste [^\p{L}\p{N}] into the Input field, check Abbreviate and Escape, then click Show Set. Add the .,?!"'=$|<>[\]{}- at the end of the character class. Then, double the backslashes (also, escape the ' or ", your string literal delimiter char, I escaped ' below) and put inside the pattern_from_uu variable definition in this JavaScript code and then, all you need to define the regex is const reg = new RegExp(pattern, "gu") or const reg = new RegExp(pattern, "u"):
const pattern_from_uu = '[^0-9A-Za-z\\u00AA\\u00B2\\u00B3\\u00B5\\u00B9\\u00BA\\u00BC-\\u00BE\\u00C0-\\u00D6\\u00D8-\\u00F6\\u00F8-\\u02C1\\u02C6-\\u02D1\\u02E0-\\u02E4\\u02EC\\u02EE\\u0370-\\u0374\\u0376\\u0377\\u037A-\\u037D\\u037F\\u0386\\u0388-\\u038A\\u038C\\u038E-\\u03A1\\u03A3-\\u03F5\\u03F7-\\u0481\\u048A-\\u052F\\u0531-\\u0556\\u0559\\u0560-\\u0588\\u05D0-\\u05EA\\u05EF-\\u05F2\\u0620-\\u064A\\u0660-\\u0669\\u066E\\u066F\\u0671-\\u06D3\\u06D5\\u06E5\\u06E6\\u06EE-\\u06FC\\u06FF\\u0710\\u0712-\\u072F\\u074D-\\u07A5\\u07B1\\u07C0-\\u07EA\\u07F4\\u07F5\\u07FA\\u0800-\\u0815\\u081A\\u0824\\u0828\\u0840-\\u0858\\u0860-\\u086A\\u0870-\\u0887\\u0889-\\u088E\\u08A0-\\u08C9\\u0904-\\u0939\\u093D\\u0950\\u0958-\\u0961\\u0966-\\u096F\\u0971-\\u0980\\u0985-\\u098C\\u098F\\u0990\\u0993-\\u09A8\\u09AA-\\u09B0\\u09B2\\u09B6-\\u09B9\\u09BD\\u09CE\\u09DC\\u09DD\\u09DF-\\u09E1\\u09E6-\\u09F1\\u09F4-\\u09F9\\u09FC\\u0A05-\\u0A0A\\u0A0F\\u0A10\\u0A13-\\u0A28\\u0A2A-\\u0A30\\u0A32\\u0A33\\u0A35\\u0A36\\u0A38\\u0A39\\u0A59-\\u0A5C\\u0A5E\\u0A66-\\u0A6F\\u0A72-\\u0A74\\u0A85-\\u0A8D\\u0A8F-\\u0A91\\u0A93-\\u0AA8\\u0AAA-\\u0AB0\\u0AB2\\u0AB3\\u0AB5-\\u0AB9\\u0ABD\\u0AD0\\u0AE0\\u0AE1\\u0AE6-\\u0AEF\\u0AF9\\u0B05-\\u0B0C\\u0B0F\\u0B10\\u0B13-\\u0B28\\u0B2A-\\u0B30\\u0B32\\u0B33\\u0B35-\\u0B39\\u0B3D\\u0B5C\\u0B5D\\u0B5F-\\u0B61\\u0B66-\\u0B6F\\u0B71-\\u0B77\\u0B83\\u0B85-\\u0B8A\\u0B8E-\\u0B90\\u0B92-\\u0B95\\u0B99\\u0B9A\\u0B9C\\u0B9E\\u0B9F\\u0BA3\\u0BA4\\u0BA8-\\u0BAA\\u0BAE-\\u0BB9\\u0BD0\\u0BE6-\\u0BF2\\u0C05-\\u0C0C\\u0C0E-\\u0C10\\u0C12-\\u0C28\\u0C2A-\\u0C39\\u0C3D\\u0C58-\\u0C5A\\u0C5D\\u0C60\\u0C61\\u0C66-\\u0C6F\\u0C78-\\u0C7E\\u0C80\\u0C85-\\u0C8C\\u0C8E-\\u0C90\\u0C92-\\u0CA8\\u0CAA-\\u0CB3\\u0CB5-\\u0CB9\\u0CBD\\u0CDD\\u0CDE\\u0CE0\\u0CE1\\u0CE6-\\u0CEF\\u0CF1\\u0CF2\\u0D04-\\u0D0C\\u0D0E-\\u0D10\\u0D12-\\u0D3A\\u0D3D\\u0D4E\\u0D54-\\u0D56\\u0D58-\\u0D61\\u0D66-\\u0D78\\u0D7A-\\u0D7F\\u0D85-\\u0D96\\u0D9A-\\u0DB1\\u0DB3-\\u0DBB\\u0DBD\\u0DC0-\\u0DC6\\u0DE6-\\u0DEF\\u0E01-\\u0E30\\u0E32\\u0E33\\u0E40-\\u0E46\\u0E50-\\u0E59\\u0E81\\u0E82\\u0E84\\u0E86-\\u0E8A\\u0E8C-\\u0EA3\\u0EA5\\u0EA7-\\u0EB0\\u0EB2\\u0EB3\\u0EBD\\u0EC0-\\u0EC4\\u0EC6\\u0ED0-\\u0ED9\\u0EDC-\\u0EDF\\u0F00\\u0F20-\\u0F33\\u0F40-\\u0F47\\u0F49-\\u0F6C\\u0F88-\\u0F8C\\u1000-\\u102A\\u103F-\\u1049\\u1050-\\u1055\\u105A-\\u105D\\u1061\\u1065\\u1066\\u106E-\\u1070\\u1075-\\u1081\\u108E\\u1090-\\u1099\\u10A0-\\u10C5\\u10C7\\u10CD\\u10D0-\\u10FA\\u10FC-\\u1248\\u124A-\\u124D\\u1250-\\u1256\\u1258\\u125A-\\u125D\\u1260-\\u1288\\u128A-\\u128D\\u1290-\\u12B0\\u12B2-\\u12B5\\u12B8-\\u12BE\\u12C0\\u12C2-\\u12C5\\u12C8-\\u12D6\\u12D8-\\u1310\\u1312-\\u1315\\u1318-\\u135A\\u1369-\\u137C\\u1380-\\u138F\\u13A0-\\u13F5\\u13F8-\\u13FD\\u1401-\\u166C\\u166F-\\u167F\\u1681-\\u169A\\u16A0-\\u16EA\\u16EE-\\u16F8\\u1700-\\u1711\\u171F-\\u1731\\u1740-\\u1751\\u1760-\\u176C\\u176E-\\u1770\\u1780-\\u17B3\\u17D7\\u17DC\\u17E0-\\u17E9\\u17F0-\\u17F9\\u1810-\\u1819\\u1820-\\u1878\\u1880-\\u1884\\u1887-\\u18A8\\u18AA\\u18B0-\\u18F5\\u1900-\\u191E\\u1946-\\u196D\\u1970-\\u1974\\u1980-\\u19AB\\u19B0-\\u19C9\\u19D0-\\u19DA\\u1A00-\\u1A16\\u1A20-\\u1A54\\u1A80-\\u1A89\\u1A90-\\u1A99\\u1AA7\\u1B05-\\u1B33\\u1B45-\\u1B4C\\u1B50-\\u1B59\\u1B83-\\u1BA0\\u1BAE-\\u1BE5\\u1C00-\\u1C23\\u1C40-\\u1C49\\u1C4D-\\u1C7D\\u1C80-\\u1C88\\u1C90-\\u1CBA\\u1CBD-\\u1CBF\\u1CE9-\\u1CEC\\u1CEE-\\u1CF3\\u1CF5\\u1CF6\\u1CFA\\u1D00-\\u1DBF\\u1E00-\\u1F15\\u1F18-\\u1F1D\\u1F20-\\u1F45\\u1F48-\\u1F4D\\u1F50-\\u1F57\\u1F59\\u1F5B\\u1F5D\\u1F5F-\\u1F7D\\u1F80-\\u1FB4\\u1FB6-\\u1FBC\\u1FBE\\u1FC2-\\u1FC4\\u1FC6-\\u1FCC\\u1FD0-\\u1FD3\\u1FD6-\\u1FDB\\u1FE0-\\u1FEC\\u1FF2-\\u1FF4\\u1FF6-\\u1FFC\\u2070\\u2071\\u2074-\\u2079\\u207F-\\u2089\\u2090-\\u209C\\u2102\\u2107\\u210A-\\u2113\\u2115\\u2119-\\u211D\\u2124\\u2126\\u2128\\u212A-\\u212D\\u212F-\\u2139\\u213C-\\u213F\\u2145-\\u2149\\u214E\\u2150-\\u2189\\u2460-\\u249B\\u24EA-\\u24FF\\u2776-\\u2793\\u2C00-\\u2CE4\\u2CEB-\\u2CEE\\u2CF2\\u2CF3\\u2CFD\\u2D00-\\u2D25\\u2D27\\u2D2D\\u2D30-\\u2D67\\u2D6F\\u2D80-\\u2D96\\u2DA0-\\u2DA6\\u2DA8-\\u2DAE\\u2DB0-\\u2DB6\\u2DB8-\\u2DBE\\u2DC0-\\u2DC6\\u2DC8-\\u2DCE\\u2DD0-\\u2DD6\\u2DD8-\\u2DDE\\u2E2F\\u3005-\\u3007\\u3021-\\u3029\\u3031-\\u3035\\u3038-\\u303C\\u3041-\\u3096\\u309D-\\u309F\\u30A1-\\u30FA\\u30FC-\\u30FF\\u3105-\\u312F\\u3131-\\u318E\\u3192-\\u3195\\u31A0-\\u31BF\\u31F0-\\u31FF\\u3220-\\u3229\\u3248-\\u324F\\u3251-\\u325F\\u3280-\\u3289\\u32B1-\\u32BF\\u3400-\\u4DBF\\u4E00-\\uA48C\\uA4D0-\\uA4FD\\uA500-\\uA60C\\uA610-\\uA62B\\uA640-\\uA66E\\uA67F-\\uA69D\\uA6A0-\\uA6EF\\uA717-\\uA71F\\uA722-\\uA788\\uA78B-\\uA7CA\\uA7D0\\uA7D1\\uA7D3\\uA7D5-\\uA7D9\\uA7F2-\\uA801\\uA803-\\uA805\\uA807-\\uA80A\\uA80C-\\uA822\\uA830-\\uA835\\uA840-\\uA873\\uA882-\\uA8B3\\uA8D0-\\uA8D9\\uA8F2-\\uA8F7\\uA8FB\\uA8FD\\uA8FE\\uA900-\\uA925\\uA930-\\uA946\\uA960-\\uA97C\\uA984-\\uA9B2\\uA9CF-\\uA9D9\\uA9E0-\\uA9E4\\uA9E6-\\uA9FE\\uAA00-\\uAA28\\uAA40-\\uAA42\\uAA44-\\uAA4B\\uAA50-\\uAA59\\uAA60-\\uAA76\\uAA7A\\uAA7E-\\uAAAF\\uAAB1\\uAAB5\\uAAB6\\uAAB9-\\uAABD\\uAAC0\\uAAC2\\uAADB-\\uAADD\\uAAE0-\\uAAEA\\uAAF2-\\uAAF4\\uAB01-\\uAB06\\uAB09-\\uAB0E\\uAB11-\\uAB16\\uAB20-\\uAB26\\uAB28-\\uAB2E\\uAB30-\\uAB5A\\uAB5C-\\uAB69\\uAB70-\\uABE2\\uABF0-\\uABF9\\uAC00-\\uD7A3\\uD7B0-\\uD7C6\\uD7CB-\\uD7FB\\uF900-\\uFA6D\\uFA70-\\uFAD9\\uFB00-\\uFB06\\uFB13-\\uFB17\\uFB1D\\uFB1F-\\uFB28\\uFB2A-\\uFB36\\uFB38-\\uFB3C\\uFB3E\\uFB40\\uFB41\\uFB43\\uFB44\\uFB46-\\uFBB1\\uFBD3-\\uFD3D\\uFD50-\\uFD8F\\uFD92-\\uFDC7\\uFDF0-\\uFDFB\\uFE70-\\uFE74\\uFE76-\\uFEFC\\uFF10-\\uFF19\\uFF21-\\uFF3A\\uFF41-\\uFF5A\\uFF66-\\uFFBE\\uFFC2-\\uFFC7\\uFFCA-\\uFFCF\\uFFD2-\\uFFD7\\uFFDA-\\uFFDC\\U00010000-\\U0001000B\\U0001000D-\\U00010026\\U00010028-\\U0001003A\\U0001003C\\U0001003D\\U0001003F-\\U0001004D\\U00010050-\\U0001005D\\U00010080-\\U000100FA\\U00010107-\\U00010133\\U00010140-\\U00010178\\U0001018A\\U0001018B\\U00010280-\\U0001029C\\U000102A0-\\U000102D0\\U000102E1-\\U000102FB\\U00010300-\\U00010323\\U0001032D-\\U0001034A\\U00010350-\\U00010375\\U00010380-\\U0001039D\\U000103A0-\\U000103C3\\U000103C8-\\U000103CF\\U000103D1-\\U000103D5\\U00010400-\\U0001049D\\U000104A0-\\U000104A9\\U000104B0-\\U000104D3\\U000104D8-\\U000104FB\\U00010500-\\U00010527\\U00010530-\\U00010563\\U00010570-\\U0001057A\\U0001057C-\\U0001058A\\U0001058C-\\U00010592\\U00010594\\U00010595\\U00010597-\\U000105A1\\U000105A3-\\U000105B1\\U000105B3-\\U000105B9\\U000105BB\\U000105BC\\U00010600-\\U00010736\\U00010740-\\U00010755\\U00010760-\\U00010767\\U00010780-\\U00010785\\U00010787-\\U000107B0\\U000107B2-\\U000107BA\\U00010800-\\U00010805\\U00010808\\U0001080A-\\U00010835\\U00010837\\U00010838\\U0001083C\\U0001083F-\\U00010855\\U00010858-\\U00010876\\U00010879-\\U0001089E\\U000108A7-\\U000108AF\\U000108E0-\\U000108F2\\U000108F4\\U000108F5\\U000108FB-\\U0001091B\\U00010920-\\U00010939\\U00010980-\\U000109B7\\U000109BC-\\U000109CF\\U000109D2-\\U00010A00\\U00010A10-\\U00010A13\\U00010A15-\\U00010A17\\U00010A19-\\U00010A35\\U00010A40-\\U00010A48\\U00010A60-\\U00010A7E\\U00010A80-\\U00010A9F\\U00010AC0-\\U00010AC7\\U00010AC9-\\U00010AE4\\U00010AEB-\\U00010AEF\\U00010B00-\\U00010B35\\U00010B40-\\U00010B55\\U00010B58-\\U00010B72\\U00010B78-\\U00010B91\\U00010BA9-\\U00010BAF\\U00010C00-\\U00010C48\\U00010C80-\\U00010CB2\\U00010CC0-\\U00010CF2\\U00010CFA-\\U00010D23\\U00010D30-\\U00010D39\\U00010E60-\\U00010E7E\\U00010E80-\\U00010EA9\\U00010EB0\\U00010EB1\\U00010F00-\\U00010F27\\U00010F30-\\U00010F45\\U00010F51-\\U00010F54\\U00010F70-\\U00010F81\\U00010FB0-\\U00010FCB\\U00010FE0-\\U00010FF6\\U00011003-\\U00011037\\U00011052-\\U0001106F\\U00011071\\U00011072\\U00011075\\U00011083-\\U000110AF\\U000110D0-\\U000110E8\\U000110F0-\\U000110F9\\U00011103-\\U00011126\\U00011136-\\U0001113F\\U00011144\\U00011147\\U00011150-\\U00011172\\U00011176\\U00011183-\\U000111B2\\U000111C1-\\U000111C4\\U000111D0-\\U000111DA\\U000111DC\\U000111E1-\\U000111F4\\U00011200-\\U00011211\\U00011213-\\U0001122B\\U00011280-\\U00011286\\U00011288\\U0001128A-\\U0001128D\\U0001128F-\\U0001129D\\U0001129F-\\U000112A8\\U000112B0-\\U000112DE\\U000112F0-\\U000112F9\\U00011305-\\U0001130C\\U0001130F\\U00011310\\U00011313-\\U00011328\\U0001132A-\\U00011330\\U00011332\\U00011333\\U00011335-\\U00011339\\U0001133D\\U00011350\\U0001135D-\\U00011361\\U00011400-\\U00011434\\U00011447-\\U0001144A\\U00011450-\\U00011459\\U0001145F-\\U00011461\\U00011480-\\U000114AF\\U000114C4\\U000114C5\\U000114C7\\U000114D0-\\U000114D9\\U00011580-\\U000115AE\\U000115D8-\\U000115DB\\U00011600-\\U0001162F\\U00011644\\U00011650-\\U00011659\\U00011680-\\U000116AA\\U000116B8\\U000116C0-\\U000116C9\\U00011700-\\U0001171A\\U00011730-\\U0001173B\\U00011740-\\U00011746\\U00011800-\\U0001182B\\U000118A0-\\U000118F2\\U000118FF-\\U00011906\\U00011909\\U0001190C-\\U00011913\\U00011915\\U00011916\\U00011918-\\U0001192F\\U0001193F\\U00011941\\U00011950-\\U00011959\\U000119A0-\\U000119A7\\U000119AA-\\U000119D0\\U000119E1\\U000119E3\\U00011A00\\U00011A0B-\\U00011A32\\U00011A3A\\U00011A50\\U00011A5C-\\U00011A89\\U00011A9D\\U00011AB0-\\U00011AF8\\U00011C00-\\U00011C08\\U00011C0A-\\U00011C2E\\U00011C40\\U00011C50-\\U00011C6C\\U00011C72-\\U00011C8F\\U00011D00-\\U00011D06\\U00011D08\\U00011D09\\U00011D0B-\\U00011D30\\U00011D46\\U00011D50-\\U00011D59\\U00011D60-\\U00011D65\\U00011D67\\U00011D68\\U00011D6A-\\U00011D89\\U00011D98\\U00011DA0-\\U00011DA9\\U00011EE0-\\U00011EF2\\U00011FB0\\U00011FC0-\\U00011FD4\\U00012000-\\U00012399\\U00012400-\\U0001246E\\U00012480-\\U00012543\\U00012F90-\\U00012FF0\\U00013000-\\U0001342E\\U00014400-\\U00014646\\U00016800-\\U00016A38\\U00016A40-\\U00016A5E\\U00016A60-\\U00016A69\\U00016A70-\\U00016ABE\\U00016AC0-\\U00016AC9\\U00016AD0-\\U00016AED\\U00016B00-\\U00016B2F\\U00016B40-\\U00016B43\\U00016B50-\\U00016B59\\U00016B5B-\\U00016B61\\U00016B63-\\U00016B77\\U00016B7D-\\U00016B8F\\U00016E40-\\U00016E96\\U00016F00-\\U00016F4A\\U00016F50\\U00016F93-\\U00016F9F\\U00016FE0\\U00016FE1\\U00016FE3\\U00017000-\\U000187F7\\U00018800-\\U00018CD5\\U00018D00-\\U00018D08\\U0001AFF0-\\U0001AFF3\\U0001AFF5-\\U0001AFFB\\U0001AFFD\\U0001AFFE\\U0001B000-\\U0001B122\\U0001B150-\\U0001B152\\U0001B164-\\U0001B167\\U0001B170-\\U0001B2FB\\U0001BC00-\\U0001BC6A\\U0001BC70-\\U0001BC7C\\U0001BC80-\\U0001BC88\\U0001BC90-\\U0001BC99\\U0001D2E0-\\U0001D2F3\\U0001D360-\\U0001D378\\U0001D400-\\U0001D454\\U0001D456-\\U0001D49C\\U0001D49E\\U0001D49F\\U0001D4A2\\U0001D4A5\\U0001D4A6\\U0001D4A9-\\U0001D4AC\\U0001D4AE-\\U0001D4B9\\U0001D4BB\\U0001D4BD-\\U0001D4C3\\U0001D4C5-\\U0001D505\\U0001D507-\\U0001D50A\\U0001D50D-\\U0001D514\\U0001D516-\\U0001D51C\\U0001D51E-\\U0001D539\\U0001D53B-\\U0001D53E\\U0001D540-\\U0001D544\\U0001D546\\U0001D54A-\\U0001D550\\U0001D552-\\U0001D6A5\\U0001D6A8-\\U0001D6C0\\U0001D6C2-\\U0001D6DA\\U0001D6DC-\\U0001D6FA\\U0001D6FC-\\U0001D714\\U0001D716-\\U0001D734\\U0001D736-\\U0001D74E\\U0001D750-\\U0001D76E\\U0001D770-\\U0001D788\\U0001D78A-\\U0001D7A8\\U0001D7AA-\\U0001D7C2\\U0001D7C4-\\U0001D7CB\\U0001D7CE-\\U0001D7FF\\U0001DF00-\\U0001DF1E\\U0001E100-\\U0001E12C\\U0001E137-\\U0001E13D\\U0001E140-\\U0001E149\\U0001E14E\\U0001E290-\\U0001E2AD\\U0001E2C0-\\U0001E2EB\\U0001E2F0-\\U0001E2F9\\U0001E7E0-\\U0001E7E6\\U0001E7E8-\\U0001E7EB\\U0001E7ED\\U0001E7EE\\U0001E7F0-\\U0001E7FE\\U0001E800-\\U0001E8C4\\U0001E8C7-\\U0001E8CF\\U0001E900-\\U0001E943\\U0001E94B\\U0001E950-\\U0001E959\\U0001EC71-\\U0001ECAB\\U0001ECAD-\\U0001ECAF\\U0001ECB1-\\U0001ECB4\\U0001ED01-\\U0001ED2D\\U0001ED2F-\\U0001ED3D\\U0001EE00-\\U0001EE03\\U0001EE05-\\U0001EE1F\\U0001EE21\\U0001EE22\\U0001EE24\\U0001EE27\\U0001EE29-\\U0001EE32\\U0001EE34-\\U0001EE37\\U0001EE39\\U0001EE3B\\U0001EE42\\U0001EE47\\U0001EE49\\U0001EE4B\\U0001EE4D-\\U0001EE4F\\U0001EE51\\U0001EE52\\U0001EE54\\U0001EE57\\U0001EE59\\U0001EE5B\\U0001EE5D\\U0001EE5F\\U0001EE61\\U0001EE62\\U0001EE64\\U0001EE67-\\U0001EE6A\\U0001EE6C-\\U0001EE72\\U0001EE74-\\U0001EE77\\U0001EE79-\\U0001EE7C\\U0001EE7E\\U0001EE80-\\U0001EE89\\U0001EE8B-\\U0001EE9B\\U0001EEA1-\\U0001EEA3\\U0001EEA5-\\U0001EEA9\\U0001EEAB-\\U0001EEBB\\U0001F100-\\U0001F10C\\U0001FBF0-\\U0001FBF9\\U00020000-\\U0002A6DF\\U0002A700-\\U0002B738\\U0002B740-\\U0002B81D\\U0002B820-\\U0002CEA1\\U0002CEB0-\\U0002EBE0\\U0002F800-\\U0002FA1D\\U00030000-\\U0003134A.,?!"\'=$|<>[\\]{}-]';
let pattern = pattern_from_uu.replace(/\\U000([a-f\d]+)/gi, "\\u{$1}");
console.log("Your regex is:\n/" + pattern + "/gu");
const texts = ["Test=😕查看","°°^ Marting 10202029 Offline!\"§$%&/()!\"§$%&/()After this we want to keep the allowed special chars: .,-?!\"'=$|<>[]{}"];
const reg = new RegExp(pattern, "gu")
for (const text of texts) {
console.log(text.replace(reg, ""));
}
See the generated regex demo.
I try to create a small DSL, but i'm struggling with even simple stuff.
The following script gives me an error.
def DEMON(String input) {
['a': input]
}
DEMON 'Hello thingy' a
For some reasons, the parentheses around the parameters are not optional and i get an error.
This script runs fine:
def dEMON(String input) {
['a': input]
}
dEMON 'Hello thingy' a
Note: the only difference is the lowercase first char.
So what is going on here? Why are the scripts interpreted (compiled?) different? Is there some kind of method/class naming schemes i have to follow?
Update: The error message. I guess a Syntax error:
unexpected token: Hello thingy # line 4, column 7.
The groovy syntax is sometime complex, and the compiler use some rules to choose what it must do. One of this rule is simple : If a word starts with an uppercase, it's probably a class.
for example, f String is a syntax valid in groovy, and the compiler converts it to f(String.class).
you can use parenthesis to help groovy understand your DEMON is not a class but a method, DEMON('Hello thingy', a)
I'm trying to write an antlr4 parser rule that can match the content between some arbitrary string values that are same. So far I couldn't find a method to do it.
For example, in the below input, I need a rule to extract Hello and Bye. I'm not interested in extracting xyz though.
TEXT Hello TEXT
TEXT1 Bye TEXT1
TEXT5 xyz TEXT8
As it is very much similar to an XML element grammar, I tried an example for XML Parser given in ANTLR4 XML Grammar, but it parses an input like <ABC> ... </XYZ> without error which is not what I wanted.
I also tried using semantic predicates without much success.
Could anyone please help with a hint on how to match content that is embedded between same strings?
Thank you!
Satheesh
Not sure how this works out performance wise, because of many many checks the parser has to do, but you could try something like:
token:
start = IDENTIFIER WORD* end = IDENTIFIER { start == end }?
;
The part between the curly braces is a validating semantic predicate. The lexer tokens are self-explanatory, I believe.
The more I think about it, it might be better you just tokenize the input and write an owner parser that processes the input and acts accordingly. Depends of course on the complexity of the syntax.
I am new to Antlr4 and have been wracking my brain for some days now about a behaviour that I simply don't understand. I have the following combined grammar and expect it to fail and report an error, but it doesn't:
grammar MWE;
parse: cell EOF;
cell: WORD;
WORD: ('a'..'z')+;
If I feed it the input
a4
I expect it to not be able to parse it, because I want it to match the whole input string and not just a part of it, as signified by the EOF. But instead it reports no error (I listen for errors with a errorlistener implementing the IAntlrErrorListener interface) and gives me the following parse tree:
(parse (cell a) <EOF>)
Why is this?
The error recovery mechanism when input is reached which no lexer rule matches is to drop a character and continue with the next one. In your case, the lexer is dropping the 4 character, so your parser is seeing the equivalent of this input:
a
The solution is to instruct the lexer to create a token for the dropped character rather than ignore it, and pass that token on to the parser where an error will be reported. In the grammar, this rule takes the following form and is always added as the last rule in the grammar. If you have multiple lexer modes, a rule with this form should appear as the last rule in the default mode as well as the last rule in each extra mode.
ErrChar
: .
;
String a = keyboard.nextLine().ignoreUpperCase()
is this a valid line?
It depends on your intention. The code you shared isn't clear about what you intend to do with the line you are reading from the keyboard.
Like it already has been suggested you could, in Java:
String a = keyboard.nextLine().toLowerCase();
or
String a = keyboard.nextLine().toUpperCase();
The intention here is that all lines you are getting are in upper or lower case. Ok if you want to treat all Strings you read from the keyboard as equals regardless of capitalization.
If your real intention is to match strings regardless of case, then the code reads better as:
String a = "Hello World";
a.equalsIgnoreCase("hello world");
now future maintainers of your code will understand what you're trying to do instead of trying to guess why you are converting to lower/upper case.