From: Robert Feldt <feldt@...>
Date: 2003-08-22T21:00:47+09:00
Subject: Re: NODE_DSTR and NODE_EVSTR?

<nobu.nokada@softhome.net> skrev den Fri, 22 Aug 2003 20:53:52 +0900:

> Hi,
>
> At Fri, 22 Aug 2003 20:33:25 +0900,
> Robert Feldt wrote:
>> How are "dynamic" strings represented internally?
>
> NodeDump or ii would help you.
>
Have you been able to compile them with 1.8? I haven't.

>> I thought
>>
>> "a#{b}"
>>
>> was represented
>>
>> DSTR["a", EVSTR[STR["b"]]
>
> It is represented as DSTR["a", EVSTR[b]], in your style.
>
Ok, thanks, it's a bug in my own dumper that mislead me.

>> As a concrete example how is
>>
>> "a#{b}_c#{1+d}"
>>
>> represented in the internal parse tree?
>
> DSTR["a", EVSTR[b], "_c", EVSTR[1+d]]
>
> In 1.8, it will be executed as:
>
> "a" << b.to_s << "_c" << (1+d).to_s
>
> Just except with internal functions (correspond to to_s and <<)
> will be used directly instead of ordinary methods calls.
>
Thanks,

Robert