[antlr-interest] Crash on rewrite

[Terence Parr]

Hi.  I added a bug for this:

http://www.antlr.org:8888/browse/ANTLR-92

Ter
On Mar 10, 2007, at 10:18 AM, Mark Bednarczyk wrote:

> I've stumbled onto the fact that if I assign a label to the option
> productions, it works:
>
> number
> 	:	h=Hex (s='l' | s='L') -> ^(INT64)
>  	;
>
> With the labels in place ANTLR compiles the expression, and it works
> correctly.
>
> The above expression was greatly simplified to make a point, the  
> actual
> rewrite is much more complex. But it all works correctly:
>
> snip...
> 	|	h=Hex (s='l' | s='L')? il32=isuLarge32
> 		-> ^({adaptor.create(($s != null?INT64:INT32),
> NplUtils.toDec($h.text, $il32.text))})
> 		
> 	|	h=Hex (s='l' | s='L')? il64=isuLarge64
> 		-> ^({adaptor.create(($s != null?INT64:INT32),
> NplUtils.toDec($h.text, $il64.text))})
> 	
> 	// Hexadecimal form  0x<VALUE>
> 	|	h=HexLiteral (s='l' | s='L')?
> 	    -> ^({adaptor.create(($s != null?INT64:INT32),
> NplUtils.toDec($h.text, 16, 2))})
> 	
> 	// Anybase form of <BASE>_<VALUE>
> 	|	a=AnyBase (s='l' | s='L')? il32=isuLarge32
> 		-> ^({adaptor.create(($s != null?INT64:INT32),
> NplUtils.toDec($a.text, $il32.text))})
>
> 	|	a=AnyBase (s='l' | s='L')? il64=isuLarge64
> 		-> ^({adaptor.create(INT64, NplUtils.toDec($a.text,
> $il64.text))})
> snip...
> isuLarge32
> 	: 'bit'  | 'bits'   // 1
> 	| 'nibble'| 'nibbles'// 4
> 	| 'byte' | 'bytes'  // 10e1
> 	| 'deca'            // 10e1
> 	| 'hecto'           // 10e2
> 	| 'kilo' | 'Kibit'  // 10e3 & IEC kibibit
> 	| 'mega' | 'Mibit'  // 10e6 & IEC mebibit
> 	;
> isuLarge64
> 	: 'giga' | 'Gibit'  // 10e9  & IEC gibibit
> 	| 'tera' | 'Tibit'  // 10e12 & IEC tebibit
> 	| 'peta' | 'Pibit'  // 10e15 & IEC pebibit
> 	| 'exa'  | 'Eibit'  // 10e18 & IEC exbibit
> 	| 'zetta'| 'Zibit'  // 10e21 & IEC zebibit
> 	| 'yotta'| 'Yobit'  // 10e24 & IEC yobibit
> 	;
>
> Cheers,
> mark....
>
>> -----Original Message-----
>> From: antlr-interest-bounces at antlr.org
>> [mailto:antlr-interest-bounces at antlr.org] On Behalf Of Mark  
>> Bednarczyk
>> Sent: Saturday, March 10, 2007 7:57 AM
>> To: 'ANTLR Interest'
>> Subject: [antlr-interest] Crash on rewrite
>>
>> Anyone know why this throws an exception everytime:
>>
>> [antlr:antlr3] ANTLR Parser Generator  Version 3.0b6 (Jan 31, 2007)
>> 1989-2007
>> [antlr:antlr3] error(10):  internal error:
>> C:\jnetstream\NplLanguage\src\antlr\Npl.g :
>> java.lang.IllegalArgumentException: Can't find template
>> matchSetTrack.st [antlr:antlr3]
>> org.antlr.stringtemplate.StringTemplateGroup.lookupTemplate(St
>> ringTemplateGr
>> oup.java:485)
>> [antlr:antlr3]
>> org.antlr.stringtemplate.StringTemplateGroup.getInstanceOf(Str
>> ingTemplateGro
>> up.java:372)
>> [antlr:antlr3]
>> org.antlr.stringtemplate.StringTemplateGroup.getInstanceOf(Str
>> ingTemplateGro
>> up.java:384)
>> ...
>>
>> On the following PARSER rule::
>>
>> number
>> 	:	h=Hex ('l'|'L') -> ^(INT64)
>> 	;
>>
>>
>> When its broken out, it works fine::
>>
>> number
>> 	:	h=Hex 'l' -> ^(INT64)
>> 	|	h=Hex 'L' -> ^(INT64)
>> 	;
>>
>> Without the rewrite part '->' the combined rule matches as
>> expected. Only throws exception when the rewrite is present.
>>
>> I've tried everything I know and started breaking all the
>> rules out in to sperate lines, but that produces a lot of
>> redundancy in the generated code.
>>
>> Cheers,
>> mark...
>>
>>
>>
>
>