[stringtemplate-interest] Replacing double quotes by single quotes in output strings?

[Thierry Coq]

Hello Jim,

thanks for your interest.

Yes I'm using ANTLR to generate a Pascal Parser and Lexer, and I'm using 
a small expression calculator grammar as an example. In order to do that 
I need to write another set of ST rules to change the target language.

the grammar start like this: (Expr.g)
grammar Expr;
options {language=Lazarus;}
...
//the rest of the grammar is like existing grammars in ANTLR.

The resulting code is like this (for the tokens table):
TOKENS_NAMES: array[0..TOKEN_COUNT] of String = (
"<invalid>",
"<EOR>",
"<DOWN>",
"<UP>",
"WS",
//..
"'+'",
//..
);

This doesn't work in Pascal. I'm trying to get:
TOKENS_NAMES: array[0..TOKEN_COUNT] of String = (
'<invalid>',
'<EOR>',
'<DOWN>',
'<UP>',
'WS",
//..
'''+''',
//..
);

The rule I use for ST is this one:
<if(grammar.IsGrammarRoot)>
const
TOKEN_COUNT = <length(tokenNames)>+3;
TOKENS_NAMES: array[0..TOKEN_COUNT] of String = (
'<invalid>',
'<EOR>',
'<DOWN>',
'<UP>',
<tokenNames:{<it>}; separator=",\n">
);
<endif>

I'm wondering how I can introduce a regexp expression in the tokenNames 
rules above to replace the chars ' by '' and " by '.

Best regards,
Thierry

Jim Idle wrote:
> Thierry,
>
> Sorry but I am still not quite following you. Are you saying that your parser is generated in Java and you want to generate it in Pascal? Or that you have a parser whose output is created by a StringTemplate? Changing the string delimiters should be trivial for the latter case, but there is no way to make the Java output of ANTLR be Pascal without writing a Pascal language target. 
>
> Can you post a small example of what you are trying to achieve?
>
> Jim
>
>   
>> -----Original Message-----
>> From: Thierry Coq [mailto:tcoq at free.fr]
>> Sent: Tuesday, December 15, 2009 9:41 PM
>> To: Jim Idle
>> Subject: Re: [stringtemplate-interest] Replacing double quotes by
>> single quotes in output strings?
>>
>> Jim,
>>
>> thank you for your prompt answer.
>>
>> I'm working with ANTLR which is using StringTemplate.
>>
>> ANTLR generates code using the StringTemplate. Of course, I don't want
>> to touch ANTLR or StringTemplate to use them to generate code. So I'm
>> limited to using string template *.st and *.stg files to do the job.
>>
>> In ANTLR, the tokens are declared as Java strings and output to the
>> generated code as java strings, as-is something rather uncompilable for
>> Pascal. I need to be able, once the tokens have been analyzed by ANTLR
>> to generate them in a format understandable by pascal, aka replacing
>> the
>> double quotes by simple one, and doubling the simple quotes within the
>> strings, if any.
>>
>> Is this possible?
>>
>> Best regards,
>> Thierry
>>
>> Jim Idle wrote:
>>     
>>> Not sure what you are asking for to be honest. Are just wanting to
>>>       
>> escape characters? Do you mean StringTemplate and not ANTLR? If you
>> means StringTemplate then perhaps you need a renderer method, but
>> generally you should do such replacements in the model and not in the
>> template.
>>     
>>> Jim
>>>
>>>
>>>       
>>>> -----Original Message-----
>>>> From: stringtemplate-interest-bounces at antlr.org
>>>>         
>> [mailto:stringtemplate-
>>     
>>>> interest-bounces at antlr.org] On Behalf Of Thierry Coq
>>>> Sent: Tuesday, December 15, 2009 12:52 PM
>>>> To: stringtemplate-interest at antlr.org
>>>> Subject: [stringtemplate-interest] Replacing double quotes by single
>>>> quotes in output strings?
>>>>
>>>> Hello,
>>>>
>>>> is it possible to replace a double-quoted string, for example "HS"
>>>>         
>> by
>>     
>>>> single quotes: 'HS', and double single quotes when needed: for
>>>>         
>> example:
>>     
>>>> "'='" becomes '''=''', in the ANTLR code generator?
>>>>
>>>> I'm looking for a regexp, but I can't seem to find it.
>>>>
>>>> Best regards,
>>>> Thierry
>>>> _______________________________________________
>>>> stringtemplate-interest mailing list
>>>> stringtemplate-interest at antlr.org
>>>> http://www.antlr.org/mailman/listinfo/stringtemplate-interest
>>>>
>>>>         
>>>
>>> _______________________________________________
>>> stringtemplate-interest mailing list
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>>>
>>>
>>>
>>>       
>
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