java - JavaCC and Unicode issue. Why \u696d cannot be managed in JavaCC although it belong to the range "\u4e00"-"\u9fff" -


we're trying use javacc parser parse source code in utf-8( language japanese). in javacc, have declaration like:

< #letter:   [    "\u0024",    "\u0041"-"\u005a",    "\u005f",    "\u0061"-"\u007a",    "\u00c0"-"\u00d6",    "\u00d8"-"\u00f6",    "\u00f8"-"\u00ff",    "\u0100"-"\u1fff",    "\u3040"-"\u318f",    "\u3300"-"\u337f",    "\u3400"-"\u3d2d",    "\u4e00"-"\u9fff",    "\uf900"-"\ufaff"   ] >

if meets string "日建フェンス工業", fail because of 業 character. if remove it, works expected. code of 業 character "\u696d", , can see in declaration, should belong range "\u4e00"-"\u9fff"

any suggestion on this?

ps: if rewrite grammar using antlr, how like

thank much

there nothing wrong token fragment , nothing wrong javacc. problem lies elsewhere.

here javacc specification made copying , pasting problem code javacc.

options {   static = true;   debug_token_manager = true ; }  parser_begin(mynewgrammar) package funnyunicode; import java.io.stringreader ;  public class mynewgrammar {   public static void main(string args []) throws parseexception   {     mynewgrammar parser = new mynewgrammar(new stringreader("日建フェンス工業"));     mynewgrammar.go() ;     system.out.println("ok."); } } parser_end(mynewgrammar)  token : {   < word : (<letter>)+ > |   < #letter:   [    "\u0024",    "\u0041"-"\u005a",    "\u005f",    "\u0061"-"\u007a",    "\u00c0"-"\u00d6",    "\u00d8"-"\u00f6",    "\u00f8"-"\u00ff",    "\u0100"-"\u1fff",    "\u3040"-"\u318f",    "\u3300"-"\u337f",    "\u3400"-"\u3d2d",    "\u4e00"-"\u9fff",    "\uf900"-"\ufaff"   ] > }  void go() : {token tk ; } {   tk=<word> <eof> }

and here output resulting java program

current character : \u65e5 (26085) @ line 1 column 1    starting nfa match 1 of : { <word> } current character : \u65e5 (26085) @ line 1 column 1    matched first 1 characters <word> token.    possible kinds of longer matches : { <word> } current character : \u5efa (24314) @ line 1 column 2    matched first 2 characters <word> token.    possible kinds of longer matches : { <word> } current character : \u30d5 (12501) @ line 1 column 3    matched first 3 characters <word> token.    possible kinds of longer matches : { <word> } current character : \u30a7 (12455) @ line 1 column 4    matched first 4 characters <word> token.    possible kinds of longer matches : { <word> } current character : \u30f3 (12531) @ line 1 column 5    matched first 5 characters <word> token.    possible kinds of longer matches : { <word> } current character : \u30b9 (12473) @ line 1 column 6    matched first 6 characters <word> token.    possible kinds of longer matches : { <word> } current character : \u5de5 (24037) @ line 1 column 7    matched first 7 characters <word> token.    possible kinds of longer matches : { <word> } current character : \u696d (26989) @ line 1 column 8    matched first 8 characters <word> token.    possible kinds of longer matches : { <word> } ****** found <word> match (\u65e5\u5efa\u30d5\u30a7\u30f3\u30b9\u5de5\u696d) ******  returning <eof> token.  ok.

as can see generated tokenizer has no trouble seeing \u696d letter.


Comments

Post a Comment

Popular posts from this blog

powershell Start-Process exit code -1073741502 when used with Credential from a windows service environment -

i'm running strange behavior powershell start-process call. here call: $process = start-process ` "c:\somepath\mybinary.exe" ` -passthru ` -credential $defaultcredential ` -wait ` -workingdirectory "c:\somepath" ` -loaduserprofile if ($process.exitcode -ne 0) { #do } this call return exit code - 1073741502 . after quick search, exit code seems related generic error when program not load required dll (aka. status_dll_init_failed ). when run without -credential $credential program runs correctly. in order isolate problem, manually launched some.exe in prompt target credential , runs smoothly. so problem seems come way start-process cmdlet launch process. i found potential solutions problem tried apply no luck : link , link . would have idea of what's going on here ? edit 1: run proc mon monitoring program activities when launched directly or via powershell script. problem seems occur when loading kernelbase
Read more

twig - Using Twigbridge in a Laravel 5.1 Package -

i'm trying create laravel 5.1 package uses twigbridge instead of .php views. can normal .php views display fine, when try make use of .twig templates i'm met error. possible use twigbridge templates when creating views laravel package or pretty stuck blade , php ? edit 1: loading twig template without extending works. it's when start using {% extends 'file' %} error comes out. i error error loading /virtual/laravel/packages/username/mypackage/src/views/sample.twig: template "templates.master" not defined () in "/virtual/laravel/packages/username/mypackage/src/views/sample.twig" @ line 1. my folders username |_ mypackage |_ src |_ controllers - samplecontroller.php |_ views |_ templates - master.twig - sample.twig twig template sample.twig {% extends 'templates.master' %} {% block content %} {{ parent()
Read more

c# - LINQ join Entities from HashSet's, Join vs Dictionary vs HashSet performance -

i have hashset's each stores t, have written test application compares different relation algorithms can think of, i'm not pleased results getting. does there exist more efficient ways of achieving object relations, once testing? using system; using system.collections.generic; using system.linq; using system.text; using system.threading.tasks; using system.diagnostics; namespace linqtests { class program { static void main(string[] args) { hashset<user> usertable = new hashset<user>(); hashset<userproperty> userpropertytable = new hashset<userproperty>(); #region lets create dummy data. console.writeline("please wait while creating dummy data, can take while..."); console.writeline(""); int rows = 1000000; for(int x = 0; x < rows; x++) { random rnd = new random(); // ad
Read more