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Re: how to get left hand side symbol in action


From: Hans Åberg
Subject: Re: how to get left hand side symbol in action
Date: Mon, 6 May 2019 15:32:46 +0200

> On 6 May 2019, at 15:21, uxio prego <address@hidden> wrote:
> 
>> On 6 May 2019, at 14:50, Hans Åberg <address@hidden> wrote:
>> 
>>> On 6 May 2019, at 11:28, r0ller <address@hidden> wrote:
>>> 
>>> Is it possible in *any* way to get the left hand side symbol in an action 
>>> of a rule? Say, I have:
>>> 
>>> A : B C
>>> {<!-- -->
>>>   std:cout<<"left hand side symbol is:"<<???
>>> };
>> 
>> In the C++ parser, one can write:
>> std::cout << “LHS: " << yytname_[yylhs.type_get()] << std::endl;
>> 
>> Used for debugging, perhaps there is a more reliable macro.
> 
> Thanks for the hint.
> Do you mean you know that it won’t work in a C parser or yacc compatibility?

It probably has a similar thing there. Check in the generated parser.





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