[antlr-interest] Need Help - Not able to use Java1.5 grammaravailable on site with ANTLRv3

[Amol Neurgaonkar]

Hi,

I tried to save the grammar file on disk and then run the ANTLRWorks on the
file,

Following is the error msg I get when running the 'Check Grammar' feature
now -


[10:05:34] Checking Grammar...
[10:05:34] error(100): Java.txt:50:12: syntax error: antlr: Java.txt:50:12:
unexpected token: ?
[10:05:34] error(100): Java.txt:50:32: syntax error: antlr: Java.txt:50:32:
unexpected token: ?
[10:05:34] error(100): Java.txt:50:51: syntax error: antlr: Java.txt:50:51:
unexpected token: *
[10:05:34] error(100): Java.txt:50:68: syntax error: antlr: Java.txt:50:68:
unexpected token: *
[10:05:34] error(100): Java.txt:114:18: syntax error: antlr: Java.txt:114:18:
unexpected token: ?
[10:05:34] error(100): Java.txt:129:8: syntax error: antlr: Java.txt:129:8:
unexpected token: block
[10:05:34] error(100): Java.txt:129:34: syntax error: antlr: Java.txt:129:34:
unexpected token: *
[10:05:34] error(100): Java.txt:147:1: syntax error: antlr: Java.txt:147:1:
unexpected token: forInit
[10:05:34] error(100): Java.txt:166:6: syntax error: antlr: Java.txt:166:6:
unexpected token: a
[10:05:34] error(100): Java.txt:166:12: syntax error: antlr: Java.txt:166:12:
unexpected token: pred
[10:05:34] error(100): Java.txt:166:20: syntax error: antlr: Java.txt:166:20:
unexpected token: check
[10:05:34] error(100): Java.txt:166:33: syntax error: antlr: Java.txt:166:33:
unexpected token: on
[10:05:34] error(100): Java.txt:166:42: syntax error: antlr: Java.txt:166:42:
unexpected token: >
[10:05:34] error(100): Java.txt:194:18: syntax error: antlr: Java.txt:194:18:
unexpected token: ?
[10:05:34] error(106): Java.txt:103:60: reference to undefined rule:
annotation
[10:05:34] error(106): Java.txt:132:13: reference to undefined rule: block
[10:05:34] error(106): Java.txt:137:30: reference to undefined rule: block
[10:05:34] error(106): Java.txt:135:35: reference to undefined rule: block
[10:05:34] error(106): Java.txt:109:43: reference to undefined rule: block
[10:05:34] error(106): Java.txt:61:38: reference to undefined rule:
annotations
[10:05:34] error(106): Java.txt:97:1: reference to undefined rule:
annotation
[10:05:34] error(106): Java.txt:67:40: reference to undefined rule: block
[10:05:34] error(106): Java.txt:135:61: reference to undefined rule: block
[10:05:34] error(106): Java.txt:140:64: reference to undefined rule: block
[10:05:34] error(106): Java.txt:136:11: reference to undefined rule: block
[10:05:34] error(106): Java.txt:117:1: reference to undefined rule:
annotation
[10:05:34] warning(105): Java.txt:112:1: no lexer rule corresponding to
token: HexLiteral
[10:05:34] warning(200): Java.txt:197:24: Decision can match input such as
"'0'..'9'{'E', 'e'}{'+', '-'}'0'..'9'{'D', 'F', 'd', 'f'}" using multiple
alternatives: 3, 4
As a result, alternative(s) 4 were disabled for that input
[10:05:34] error(10):  internal error: org.antlr.tool.Message.toString(Unknown
Source): Assertion failed! Message ID 100 created but is not present in
errorMsgIDs or warningMsgIDs.

Here is the line no 49 : (Note, the line is commented after }. I am not sure
if the word 'compilationUnit' should also be part of the comment or not)

*= true; } // starting point for parsing a java file compilationUnit : *

which is followed by line no 50 as below where the first error is thrown:

*annotations? packageDeclaration? importDeclaration* typeDeclaration* ;
*



The Grammar is still the same
(http://www.antlr.org/grammar/1152141644268/Java.g)
, just that now instead of showing the full grammar in one line(when I used
to copy directly from browser), now it shows in 221 lines. However, it gives
the above error now.



Thanks,

Amol.



On 6/22/07, Amol Neurgaonkar <amol.neurgaonkar at gmail.com> wrote:
>
> Your understanding is correct. When I paste the Java1.5 grammar from site
> ( http://www.antlr.org/grammar/1152141644268/Java.g) , the whole grammar
> is copied
> as a single line in the ANTLRWorks dialogue box.
> When I run the 'Check Grammar' , it succeeds, however when I run 'Generate
> Code' it throws following error.
>
> [19:04:25] Java.g:1:16360: unexpected char: ' '
>  at org.antlr.tool.ANTLRLexer.nextToken(Unknown Source)
>  at antlr.TokenStreamRewriteEngine.nextToken (
> TokenStreamRewriteEngine.java:161)
>  at antlr.TokenBuffer.fill(TokenBuffer.java:69)
>  at antlr.TokenBuffer.LA(TokenBuffer.java:80)
>  at antlr.LLkParser.LA(LLkParser.java:52)
>  at org.antlr.tool.ANTLRParser.actions (Unknown Source)
>  at org.antlr.tool.ANTLRParser.grammar(Unknown Source)
>  at org.antlr.tool.Grammar.setGrammarContent(Unknown Source)
>  at org.antlr.tool.Grammar.setGrammarContent(Unknown Source)
>  at org.antlr.works.grammar.EngineGrammar.createNewGrammar (Unknown
> Source)
>  at org.antlr.works.grammar.EngineGrammar.createCombinedGrammar(Unknown
> Source)
>  at org.antlr.works.grammar.EngineGrammar.createGrammars(Unknown Source)
>  at org.antlr.works.grammar.EngineGrammar.analyze (Unknown Source)
>  at org.antlr.works.grammar.CheckGrammar.run(Unknown Source)
>  at java.lang.Thread.run(Unknown Source)
>
> [19:04:25] error(100): C:\antlr3.0\Java.g:2:1: syntax error: antlr:
> C:\antlr3.0\Java.g:2:1: unexpected token: null
> [19:04:25] error(150):  grammar file C:\antlr3.0\Java.g has no rules
> I have tried using other grammars for Java 1.5 listed in the Grammars
> section, but they do not seem to succeed even for 'Check Grammar' feature.
>
> Thanks,
> Amol.
>
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