Re: %token-table doesn't seem to be working for C++?

[Derek Clegg]

Thanks for your response. I suggest you read through the bison manual, 
particularly the section on token type names, in order to better understand my 
question.

Derek

> On Mar 2, 2019, at 12:26 PM, John P. Hartmann <address@hidden> wrote:
> 
> Alas, the scanner is allowed to return an integer only.  It cannot return a 
> string.
> 
> Anyhow, your sample %token statement declares two tokens, not one; the last 
> being meaningless.
> 
> On 3/2/19 21:13, Derek Clegg wrote:
>> On Feb 18, 2019, at 9:59 PM, Akim Demaille <address@hidden> wrote:
>>> 
>>> Hi Derek,
>>> 
>>>> Le 18 févr. 2019 à 21:07, Derek Clegg <address@hidden> a écrit :
>>>> 
>>>> Perhaps I’m doing something wrong, but it appears that, in C++, 
>>>> %token-table doesn’t work: instead of yytname, I only see yytname_. It 
>>>> also appears that YYNTOKENS, YYNNTS, YYNRULES, and YYNSTATES are not 
>>>> defined, contrary to the documentation. Am I missing something, or is this 
>>>> broken?
>>> 
>>> Let me answer with a question: what are you trying to achieve?
>>> What do you need these for?
>> What I’d actually like to do is get the string name associated with a symbol.
>> For example, if I had
>> %token PLUS_ASSIGN     "+="
>> %token MINUS_ASSIGN    "-="
>> ...
>> then I could write something akin to
>> assignment-expression:
>>   name assignment-op expression
>>     {
>>       std::cout << "Assignment: " << get_name_of_op($2) << "\n";
>>       $$ = build_assignment(get_name_of_op($2), $name, $expression);
>>     }
>> ;
>> assignment-op: "+=" | "-=" | ... ;
>> Derek
>> _______________________________________________
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> 
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