Fixing Parser Weirdness
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Fixing Parser Weirdness
by twashing
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Hey all, I've implemented a language using sablecc that looks like in fig. 1. command( ( <context/> ) <input/>, `/input[ @att='value' ]`, -inputoption value ); fig. 1 A) I'm trying to implement an input option, " -inputoption value ", but if I try to implement the command in fig. 2, I get the error seen in fig. 4. var removedE = remove ( ( load( `/system[ @id="main.system" ]/groups[ @id="main.groups" ]/group[ @id="seven.group" ]/bookkeeping[ @id="main.bookkeeping" ]/journals[ @id="main.journals" ]/journal[ @id="generalledger" ]/entries[ @id="main.entries" ]` ) ) <entry xmlns='com/interrupt/bookkeeping/journal' id='qwer' entrynum='' state='' journalid='' date='02022006' currency='CDN' > <debit xmlns='com/interrupt/bookkeeping/account' id='asdf' amount='11.00' entryid='' accountid='1' account='office equipment' currency='CDN' /> <debit xmlns='com/interrupt/bookkeeping/account' id='zxcv' amount='1.50' entryid='' accountid='2' account='tax' currency='CDN' /> <credit xmlns='com/interrupt/bookkeeping/account' id='tyui' amount='12.50' entryid='' accountid='3' account='bank' currency='CDN' /> </entry> , -returninput true ); fig. 2 B) I'm also trying to get SableCC to ignore special characters between single and double quotes ( ' " ). So for example, I want to be able to say <profileDetail value='twashing@...' />, but the parser dies with the error in fig. 5. var aauthUsers = add ( ( load ( `/system[ @id='main.system' ]` ) ) <user xmlns='com/interrupt/bookkeeping/users' id='seven' username='seven' password='seven' logintimeout='600000' > <profileDetails xmlns='com/interrupt/bookkeeping/users' id='user.details' > <profileDetail xmlns='com/interrupt/bookkeeping/users' id='firstname' name='first.name' value='seven' /> <profileDetail xmlns='com/interrupt/bookkeeping/users' id='lastname' name='last.name' value='seven' /> <profileDetail xmlns='com/interrupt/bookkeeping/users' id='email' name='email' value='twashing@...' /> <profileDetail xmlns='com/interrupt/bookkeeping/users' id='country' name='country' value='U.S.A' /> </profileDetails> </user> ); fig. 3 It feels like Sablecc is very sensitive in the order of tokens. Can anyone help me isolate and fix this problem. I've attached my sablecc file. Thanks in advance Tim com.interrupt.bookkeeping.cc.parser.ParserException: [1,1] expecting: 'var', 'create', 'add', 'update', 'remove', 'reverse', 'find', 'list', 'print', 'commit', 'load', 'login', 'logout', 'exit' at com.interrupt.bookkeeping.cc.parser.Parser.parse(Parser.java:1028) at com.interrupt.bookkeeping.cc.bkell.Bkell.run(Bkell.java:145) at java.lang.Thread.run(Thread.java:637) fig. 4 com.interrupt.bookkeeping.cc.parser.ParserException: [19,3] expecting: 'create', 'add', 'update', 'remove', 'reverse', 'find', 'list', 'print', 'commit', 'load', 'login', 'logout', 'exit', 'system', 'debit', 'credit', 'entry', 'entries', 'journal', 'journals', 'transaction', 'account', 'accounts', 'user', 'users', 'group', 'groups', 'allowedActions', 'command', 'profileDetails', 'profileDetail', 'userSession', '<', rbracket, atsign, '`' at com.interrupt.bookkeeping.cc.parser.Parser.parse(Parser.java:1022) at com.interrupt.bookkeeping.cc.bkell.Bkell.run(Bkell.java:145) at java.lang.Thread.run(Thread.java:637) fig. 5 Looking for the perfect gift? Give the gift of Flickr! [bkeeping.cc] Package com.interrupt.bookkeeping.cc; Helpers all = [0 .. 127]; lowercase = ['a' .. 'z']; uppercase = ['A' .. 'Z']; digit = ['0' .. '9']; hex_digit = [ digit+ [['a' .. 'f'] + ['A' .. 'F']] ]; tab = 9; cr = 13; lf = 10; eol = cr lf | cr | lf; // This takes care of different platforms dash = '-'; dot = '.'; forwardslash = '/'; backslash = '\'; asterix = 42; equals_helper = '='; colon_helper = ':'; ats = '@'; underscore = '_'; single_quote = '''; double_quote = '"'; lsquare_bracket = '['; rsquare_bracket = ']'; left_bracket = '('; right_bracket = ')'; ws = (' ' | tab | eol); States bkeeping, freetext; // we need a way to ignore commands in freetext Tokens //** VARIABLE {bkeeping} var = 'var'; //** COMMANDS {bkeeping} create = 'create'; {bkeeping} add = 'add'; {bkeeping} update = 'update'; {bkeeping} remove = 'remove'; {bkeeping} reverse = 'reverse'; {bkeeping} find = 'find'; {bkeeping} list = 'list'; {bkeeping} print = 'print'; {bkeeping} commit = 'commit'; {bkeeping} load = 'load'; {bkeeping} login = 'login'; {bkeeping} logout = 'logout'; {bkeeping} exit = 'exit'; {bkeeping} semicolon = ( 59 )?; whitespace = (' ' | tab | eol); comment_line = forwardslash forwardslash all* eol; comment_block = forwardslash asterix all* asterix forwardslash; //** COMMAND OPTIONS entry_opt = '-entry' ws+ ( lowercase | uppercase | dash | colon_helper | ats | underscore | digit | dot )*; entryid_opt = '-entryid' ws+ ( lowercase | uppercase | dash | colon_helper | ats | underscore | digit | dot )*; account_opt = '-account' ws+ ( lowercase | uppercase | dash | colon_helper | ats | underscore | digit | dot )*; accountid_opt = '-accountid' ws+ ( lowercase | uppercase | dash | colon_helper | ats | underscore | digit | dot )*; journal_opt = '-journal' ws+ ( lowercase | uppercase | dash | colon_helper | ats | underscore | digit | dot )*; name_opt = '-name' ws+ ( lowercase | uppercase | dash | colon_helper | ats | underscore | digit | dot )*; type_opt = '-type' ws+ ( lowercase | uppercase | dash | colon_helper | ats | underscore | digit | dot )*; counterweight_opt = '-counterWeight' ws+ lowercase+; amount_opt = '-amount' ws+ digit+'.'digit+; id_opt = '-id' ws+ ( lowercase | uppercase | dash | colon_helper | ats | underscore | digit | dot )*; entrynum_opt = '-entrynum' ws+ digit*; date_opt = '-date' ws+ digit+'/'digit+'/'digit+; file_opt = '-F' ws+ ( lowercase | uppercase | dash | colon_helper | ats | underscore | digit | dot )*; group_opt = '-group' ws+ ( lowercase | uppercase | dash | colon_helper | ats | underscore | digit | dot )*; uname_opt = '-username' ws+ ( lowercase | uppercase | dash | colon_helper | ats | underscore | digit | dot )*; passwd_opt = '-password' ws+ ( lowercase | uppercase | dash | colon_helper | ats | underscore | digit | dot )*; groupid_opt = '-groupid' ws+ ( lowercase | uppercase | dash | colon_helper | ats | underscore | digit | dot )*; userid_opt = '-userid' ws+ ( lowercase | uppercase | dash | colon_helper | ats | underscore | digit | dot )*; currency_opt = '-currency' ws+ ( lowercase | uppercase | dash | colon_helper | ats | underscore | digit | dot )*; returninput_opt = '-returninput' ws+ ( lowercase | uppercase | dash | colon_helper | ats | underscore | digit | dot )*; //** COMMAND TOKENS system_tok = 'system'; debit_tok = 'debit'; credit_tok = 'credit'; entry_tok = 'entry'; entries_tok = 'entries'; journal_tok = 'journal'; journals_tok = 'journals'; transaction_tok = 'transaction'; account_tok = 'account'; accounts_tok = 'accounts'; user_tok = 'user'; users_tok = 'users'; group_tok = 'group'; groups_tok = 'groups'; allowedactions_tok = 'allowedActions'; command_tok = 'command'; profiledetails_tok = 'profileDetails'; profiledetail_tok = 'profileDetail'; usersession_tok = 'userSession'; lparen = '<'; rparen = '>'; listdelimiter = ','; exclamation = 33; question = 63; doubledash = dash dash; lbracket = left_bracket; rbracket = right_bracket; //lsbracket = lsquare_bracket; //rsbracket = rsquare_bracket; equals = equals_helper; fslash = forwardslash; atsign = ats; colon = colon_helper; {bkeeping -> freetext, freetext -> bkeeping} quote = ( double_quote | single_quote ); {bkeeping -> freetext, freetext -> bkeeping} backquote = '`'; word = ( lowercase | uppercase | dash | underscore | digit | dot )+; //xpath_chars = ( ats | forwardslash | colon_helper | left_bracket | right_bracket | lsquare_bracket | rsquare_bracket | equals_helper | double_quote | single_quote ); xpath_chars = ( colon_helper | left_bracket | right_bracket | lsquare_bracket | rsquare_bracket ); xmlns = 'xmlns'; decl_xml = 'xml'; decl_dtd = 'DOCTYPE'; eoll = (cr | lf | cr lf)?; Ignored Tokens whitespace, comment_line, comment_block; Productions expr = {cmd} command semicolon | {thexpr} twohandexpr semicolon; /*************************** * VARIABLES * * @memory * @previous * */ twohandexpr = var word equals command; // assigning results to variables varname = atsign word?; // put an '@' sign in front of variable name to reference it /*************************** * COMMANDS * * add ((token.literal) token.literal, ...) * update ((token.literal) token.literal, ...) * remove ((token.literal) token.literal, ...) * * reverse ((token.literal) (token.literal) token.literal) * * * find ((token.literal) token -opts) * list ((token.literal) token -opts) * * create (token -opts) * * load (token -opts) <-- DB * commit (token.literal) <-- DB * * print (token.literal) * * login (token -opts) <-- DB * logout <-- DB * exit * */ command = {c1} command1 | {c5} command5 | {c2} command2 | {c3} command3 | {c4} command4 | {c6} command6 | {c7} command7; command1 = {add} add [lbdepth1]:lbracket [lbdepth2]:lbracket command_input [rbdepth2]:rbracket ilist* [rbdepth1]:rbracket | {update} update [lbdepth1]:lbracket [lbdepth2]:lbracket [c1]:command_input [rbdepth2]:rbracket [c2]:command_input [rbdepth1]:rbracket | {remove} remove [lbdepth1]:lbracket [lbdepth2]:lbracket command_input [rbdepth2]:rbracket ilist* [rbdepth1]:rbracket; command5 = {reverse} reverse [lbdepth1]:lbracket [lbdepth2]:lbracket [ci1]:command_input [rbdepth2]:rbracket [lbdepth3]:lbracket [ci2]:command_input [rbdepth3]:rbracket [ci3]:command_input [rbdepth1]:rbracket; //** input list & delimiter ilist = command_input ilistpart*; ilistpart = listdelimiter command_input; command2 = {find} find [lbdepth1]:lbracket [lbdepth2]:lbracket [c1]:command_input [rbdepth2]:rbracket [c2]:command_input [rbdepth1]:rbracket| {list} list [lbdepth1]:lbracket [lbdepth2]:lbracket [c1]:command_input [rbdepth2]:rbracket [c2]:command_input [rbdepth1]:rbracket; command3 = {load} load lbracket command_input rbracket | {create} create lbracket command_input rbracket | {login} login lbracket command_input rbracket; command4 = {logout} logout| {exit} exit; command6 = {print} print lbracket command_input rbracket; command7 = {commit} commit [lbdepth1]:lbracket [lbdepth2]:lbracket [input1]:command_input [rbdepth2]:rbracket [input2]:command_input [rbdepth1]:rbracket; /************************** * COMMAND INPUT */ command_input = {var} varname | {xml} xmlblock | {opts} input_option | {cmd} command | {xpath} xpath; // token -opts input_option = commandtoken commandoption*; xpath = [left]:backquote xpath_part* [right]:backquote; xpath_part = {wd} wordetal | {xpc} xpath_chars | {fslash} fslash | {quote} quote | {ats} atsign | {equals} equals; /*************************** * COMMAND OPTIONS */ commandoption = {entry} entry_opt | {entryid} entryid_opt | {account} account_opt | {accountid} accountid_opt | {journal} journal_opt | {name} name_opt | {type} type_opt | {cweight} counterweight_opt | {amount} amount_opt | {id} id_opt | {entrynum} entrynum_opt | {date} date_opt | {file} file_opt | {group} group_opt | {uname} uname_opt | {return} returninput_opt | {passwd} passwd_opt | {groupid} groupid_opt | {userid} userid_opt | {currency} currency_opt; /*************************** * XML BLOCKS */ xmlblock = xml_decl? fulltag; fulltag = {fulltag} opentag fulltag* wordetal* closetag | {emptytag} emptytag | {comment} xmlcomment; opentag = lparen nsprefix? wordetal attribute* rparen; emptytag = lparen nsprefix? wordetal attribute* fslash rparen; closetag = lparen fslash nsprefix? wordetal rparen; xml_decl = {xml_schem} xml_decl_schem | {xml_dtd} xml_decl_dtd; // <?xml version="1.0" encoding="iso8859-1" ?> xml_decl_schem = lparen [left]:question wordetal attribute+ [right]:question rparen; // <!DOCTYPE greeting SYSTEM "hello.dtd" > xml_decl_dtd = lparen exclamation word_dtd+ rparen; word_dtd = {attrhs} attributerhs | {word} word; attribute = nsprefix? attributelhs equals attributerhs; attributelhs = wordetal; attributerhs = [left]:quote zzz* [right]:quote; nsprefix = wordetal colon; xmlcomment = xml_opencomment wordetal* xml_closecomment; xml_opencomment = lparen exclamation doubledash; xml_closecomment = doubledash rparen; zzz = {one} wordetal | {two} fslash; wordetal = {word} word | {ctoken} commandtoken; /*************************** * COMMAND TOKENS */ commandtoken = {system} system_tok | {debit} debit_tok | {credit} credit_tok | {entry} entry_tok | {entries} entries_tok | {journal} journal_tok | {journals} journals_tok | {transaction} transaction_tok | {accounts} accounts_tok | {account} account_tok | {user} user_tok | {users} users_tok | {group} group_tok | {groups} groups_tok | {allowedactions} allowedactions_tok | {command} command_tok | {profiledetails} profiledetails_tok | {profiledetail} profiledetail_tok | {usersession} usersession_tok; // >>>>>>>>>> TODO // 7. include CDATA blocks // <a> <![CDATA[ do something ]]> </a> /** * * TEST XMLs */ // <xml> // <xml/> // <xml> ccc </xml> // <xml> lorem ipsum some text </xml> // <xml attr1="" attr2="wert" /> // <xml attr1="" attr2="wert" > </xml> // <xml:xml /> // <xml:xml></xml:xml> // <xml:xml attr1="" attr2="wert" /> // <xml:xml attr1="" attr2="wert" ></xml:xml> // <xml:xml attr1="" attr2="wert" > <a> <b/> </a> lorem ipsum some text </xml:xml> // <xml:xml attr1="" attr2="wert" > <a> <!-- this is comments --> <b/> </a> lorem ipsum some text </xml:xml> // <xml:xml pre:attr1="" pref:attr2="wert" > <a> <!-- this is comments --> <b/> </a> lorem ipsum some text </xml:xml> // <?xml version="1.0" encoding="iso8859-1" ?> <xml:xml attr1="" attr2="wert" > <a> <!-- this is comments --> <b/> </a> lorem ipsum some text </xml:xml> // <!DOCTYPE greeting SYSTEM "hello.dtd" > <xml:xml attr1="" attr2="wert" > <a> <!-- this is comments --> <b/> </a> lorem ipsum some text </xml:xml> // <debit xmlns='com/interrupt/bookkeeping/account' id='def' amount='1.50' entryid='e1' accountid='2' /> // <?xml version="1.0" encoding="iso8859-1" ?><credit xmlns='com/interrupt/bookkeeping/account' id='def' amount='1.50' entryid='e1' accountid='2' /> // <account xmlns='com/interrupt/bookkeeping/account' id='1' name='office equipment' type='asset' counterWeight='debit' ><debit xmlns='com/interrupt/bookkeeping/account' id='' amount='10.00' entryid='' accountid='1' /></account> /** * * SCRATCH XML */ // <lebit xmlns='com/interrupt/bookkeeping/account' id='def' amount='1.50' entryid='e1' accountid='2' /> // <lebit xmlns='comaccount' id='def' amount='1.50' entryid='e1' accountid='2' /> // <debit xmlns='comaccount' id='def' amount='1.50' entryid='e1' accountid='2' /> // <xml:xml attr1="com/interrupt/bookkeeping/account" attr2="wert" > <a> <b/> </a> lorem ipsum some text </xml:xml> // <xml attr1="com/interrupt/bookkeeping/account" attr2="wert" > <a> <b/> </a> lorem ipsum some text </xml> // <xml attr1="com/interrupt/bookkeeping/account" attr2="wert" > <a> <b/> </a> </xml> // <xml attr1="comaccount" attr2="wert" > <a> <b/> </a> </xml> // <xml attr1="comaccount" attr2="wert" > <a> <b/> </a> lorem ipsum </xml> // <xml attr1="com/interrupt/bookkeeping/account" attr2="wert" > <a> <b/> </a> lorem ipsum </xml> // <debit attr1="com/interrupt/bookkeeping/account" attr2="wert" > <a> <b/> </a> </debit> // <debit attr1="com/interrupt/bookkeeping/account" attr2="wert" > </debit> /** * * TEST OPTIONS */ // -entry journal // -type type -name some // -type type -name some -id qerfb1435c -date 06/24/2003 //[X] -account "account name" //[X] -journal journal name -entry journal // -counterWeight debit // -amount 123.33 // -id qerfb1435c // -entrynum 765 // -date 06/24/2003 // -F filename // login ( user -username root -password password ); // load ( users -id aauth.users ); //** create ( debit -id erfg -amount 123.33 ); // create ( <debit xmlns='com/interrupt/bookkeeping/account' id='def' amount='1.50' /> ); // load ( users -id aauth.users ); // load ( debit -amount 10.00 ); // load ( debit -id abc -amount 10.00 ); // load ( <debit xmlns='com/interrupt/bookkeeping/account' id='def' amount='1.50' /> ); //** add ((create ( entry -id ez ) ) create ( debit -id dbzz -amount 10.00 ) ); // add ((create ( entry -id ez ) ) load ( debit -id abc -amount 10.00 ) ); // add ((create ( entry -id ez -currency CDN ) ) create ( <debit xmlns='com/interrupt/bookkeeping/account' id='def' amount='1.50' currency='CDN' /> ) ); // remove ( (load ( entry -id e1 )) ); // remove ( (load ( entry -id e1 )) load ( debit -id abc -amount 10.00 ) ); /* reverse ( ( <entries xmlns='com/interrupt/bookkeeping/journal' id='' > <entry xmlns='com/interrupt/bookkeeping/journal' id='e1' entrynum='' state='closed' journalid='' date='' > <debit xmlns='com/interrupt/bookkeeping/account' id='abc' amount='10.00' entryid='e1' accountid='1' /> <debit xmlns='com/interrupt/bookkeeping/account' id='def' amount='1.50' entryid='e1' accountid='2' /> <credit xmlns='com/interrupt/bookkeeping/account' id='ghi' amount='11.50' entryid='e1' accountid='3' /> </entry> </entries> ) ( <entry xmlns='com/interrupt/bookkeeping/journal' id='e1' entrynum='' state='closed' journalid='' date='' > <debit xmlns='com/interrupt/bookkeeping/account' id='abc' amount='10.00' entryid='e1' accountid='1' /> <debit xmlns='com/interrupt/bookkeeping/account' id='def' amount='1.50' entryid='e1' accountid='2' /> <credit xmlns='com/interrupt/bookkeeping/account' id='ghi' amount='11.50' entryid='e1' accountid='3' /> </entry> ) <entry xmlns='com/interrupt/bookkeeping/journal' id='ereverse' entrynum='' state='closed' journalid='' date='' > <debit xmlns='com/interrupt/bookkeeping/account' id='reverseabc' amount='11.50' entryid='ereverse' accountid='1' /> <credit xmlns='com/interrupt/bookkeeping/account' id='reverseghi' amount='11.50' entryid='ereverse' accountid='3' /> </entry> ); */ // reverse ( (entries -id es1) (entry -id e1) <entry xmlns='com/interrupt/bookkeeping/journal' id='newid' state='closed' > </entry> ); // find ( (load ( account -id 2 )) load ( debit -amount 1.50 ) ); // list ( (load ( entry -id e1 )) load ( debit -entryid e1) ); //** list ( (load ( entry -id e1 )) <debit xmlns='com/interrupt/bookkeeping/account' / > ); // list ( (load ( entry -id e1 )) <debit xmlns='com/interrupt/bookkeeping/account' entryid='e1' / > ); //** VARIABLES // var timmy = list ( (load ( entry -id e1 )) <debit xmlns='com/interrupt/bookkeeping/account' / > ); // find ( (load ( entry -id e1 )) @timmy ); // print ( @timmy ); //** COMMITING /* add ( (load ( entries -id es1 )) add ( (create ( entry -id e2 )) create (debit -id nsfada -entryid e2 -amount 52.30 -accountid 1 ), create (credit -id efiafd -entryid e2 -amount 52.30 -accountid 3 ) ) ); */ // add ( ( create (entries) ) create ( entry ) ); // add ( ( create (entries) ) create ( entry ), create ( entry ) ); /* var tim = add ( (create ( entry -id e2 )) create (debit -id nsfada -entryid e2 -amount 52.30 -accountid 1 ), create (credit -id efiafd -entryid e2 -amount 52.30 -accountid 3 ) ); */ // var result = add ( (load ( entries -id es1 )) @tim ); // commit ( @result ); // >>>>>>>>>> DONE // * Tokens cannot use other tokens // [OK] multiple attributes // [OK] include 2 tokens in a production rule // [OK] include xml comments // <!-- --> // [OK] include namespace declarations; namespace usage in tags and attributes // xmlns='' xmlns:ans='' <ans:tagname att='' /> // [OK] text in open/close tags // <a att='' > // <b/> // some text // </a> // [OK] include document declaration ( DTD & schema ) // <?xml version="1.0" encoding="iso8859-1" **allow any and all characters between** ?> // <!DOCTYPE greeting SYSTEM "hello.dtd" **allow any and all characters between** > // [OK] implement token & options (this will also be the short form of inputs ) // [OK] comments _______________________________________________ SableCC-Discussion mailing list SableCC-Discussion@... http://lists.sablecc.org/listinfo/sablecc-discussion |
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RE: Fixing Parser Weirdness
by Christopher Van Kirk
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This is probably your problem:
dash = '-'; . . . entry_opt = '-entry' ws+ ( lowercase | uppercase | dash | colon_helper | ats | underscore | digit | dot )*;
You’ve defined a dash token in the lexer section, but you’re expecting to see it joined to a word in the parser, Remember that what comes out of the Tokens section is a stream of tokens you have defined there, so what your parser will see is
dash entry … not -entry
Try changing your production to something like:
entry_opt = dash 'entry' ws+ ( lowercase | uppercase | dash | colon_helper | ats | underscore | digit | dot )*;
Cheers,
Chris…
-----Original Message-----
Hey
all, I've implemented a language using sablecc that looks like in fig. 1.
Looking for the perfect gift? Give the gift of Flickr! _______________________________________________ SableCC-Discussion mailing list SableCC-Discussion@... http://lists.sablecc.org/listinfo/sablecc-discussion |
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Re: Fixing Parser Weirdness
by twashing
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That's actually a really good point - I made that change. But the parser is still breaking with the error in fig. 1 when I do a simple command ( see fig. 0 ). Ultimately I want to make a command like in fig. 2. To remove the error, all I have to do is remove the "returninput_opt" parts ( lines 98 & 288 ). This is what I meant by a sensitive parser, because I can't see how those 2 lines would break an unrelated token / production. login ( user -username root -password password ); fig. 0 login ( user -username root -password password ); ERROR [Thread-3] (Bkell.java:186) - [4,7] expecting: lbracket com.interrupt.bookkeeping.cc.parser.ParserException: [4,7] expecting: lbracket at com.interrupt.bookkeeping.cc.parser.Parser.parse(Parser.java:1022) at com.interrupt.bookkeeping.cc.bkell.Bkell.run(Bkell.java:145) at java.lang.Thread.run(Thread.java:637) ERROR [Thread-3] (Bkell.java:188) - <logs xmlns='com/interrupt/logs' id='' ><log xmlns='com/interrupt/logs' level='ERROR' id='' ><logMessages xmlns='com/interrupt/logs' id='' ><logMessage xmlns='com/interrupt/logs' id='' >[4,7] expecting: lbracket</logMessage> </logMessages> </log> </logs> ERROR [Thread-3] (Bkell.java:186) - [1,2] expecting: 'var', 'create', 'add', 'update', 'remove', 'reverse', 'find', 'list', 'print', 'commit', 'load', 'login', 'logout', 'exit' com.interrupt.bookkeeping.cc.parser.ParserException: [1,2] expecting: 'var', 'create', 'add', 'update', 'remove', 'reverse', 'find', 'list', 'print', 'commit', 'load', 'login', 'logout', 'exit' at com.interrupt.bookkeeping.cc.parser.Parser.parse(Parser.java:1022) at com.interrupt.bookkeeping.cc.bkell.Bkell.run(Bkell.java:145) at java.lang.Thread.run(Thread.java:637) ERROR [Thread-3] (Bkell.java:188) - <logs xmlns='com/interrupt/logs' id='' ><log xmlns='com/interrupt/logs' level='ERROR' id='' ><logMessages xmlns='com/interrupt/logs' id='' ><logMessage xmlns='com/interrupt/logs' id='' >[1,2] expecting: 'var', 'create', 'add', 'update', 'remove', 'reverse', 'find', 'list', 'print', 'commit', 'load', 'login', 'logout', 'exit'</logMessage> </logMessages> </log> </logs> ... fig. 1 var aauthUsers = add ( ( load ( `/system[ @id='main.system' ]` ) ) <user xmlns='com/interrupt/bookkeeping/users' id='seven' username='seven' password='seven' logintimeout='600000' > <profileDetails xmlns='com/interrupt/bookkeeping/users' id='user.details' > <profileDetail xmlns='com/interrupt/bookkeeping/users' id='firstname' name='first.name' value='seven' /> <profileDetail xmlns='com/interrupt/bookkeeping/users' id='lastname' name='last.name' value='seven' /> <profileDetail xmlns='com/interrupt/bookkeeping/users' id='email' name='email' value='twashing@...' /> <profileDetail xmlns='com/interrupt/bookkeeping/users' id='country' name='country' value='U.S.A' /> </profileDetails> </user> , -returninput true ); fig. 2 Tim From: Christopher Van Kirk <chris.vankirk@...> To: Discussion mailing list for the SableCC project <sablecc-discussion@...> Sent: Thursday, September 3, 2009 12:08:21 AM Subject: RE: Fixing Parser Weirdness This is probably your problem:
dash = '-'; . . . entry_opt = '-entry' ws+ ( lowercase | uppercase | dash | colon_helper | ats | underscore | digit | dot )*;
You’ve defined a dash token in the lexer section, but you’re expecting to see it joined to a word in the parser, Remember that what comes out of the Tokens section is a stream of tokens you have defined there, so what your parser will see is
dash entry … not -entry
Try changing your production to something like:
entry_opt = dash 'entry' ws+ ( lowercase | uppercase | dash | colon_helper | ats | underscore | digit | dot )*;
Cheers,
Chris…
-----Original Message-----
Hey
all, I've implemented a language using sablecc that looks like in fig. 1.
Looking for the perfect gift? Give the gift of Flickr! Looking for the perfect gift? Give the gift of Flickr! _______________________________________________ SableCC-Discussion mailing list SableCC-Discussion@... http://lists.sablecc.org/listinfo/sablecc-discussion |
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Re: Fixing Parser Weirdness
by Christopher Van Kirk
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