Re: [ANNOUNCE] lua_dolines-1.1.patch

[Juergen Fuhrmann <fuhrmann@...>]

>  Wed, 31 Jul 2002 19:31:45 +0200
>  Edgar Toernig <froese@gmx.de> wrote:
>
>  Luiz Henrique de Figueiredo wrote:
>  > 
>  > In Lua 5.0, chunks are loaded via a single API function, lua_load, which
>  > receives a user function that handles blocks of bytes to Lua's core for
>  > parsing (or undumping).
>  
>  It would be nice if this function could be a Lua function.  Or even
>  better, a hook between lexer and parser...

Possibly, this  just can  be realized by  lua_rawcall in  the handler.
For myself  I suggest to  keep the option  to have the  possibility of
memory efficient  parsing of documents  containing mixed Lua  and huge
datasets. Lua indeed is _speed_ efficient on this.

I tried to read 1000k doubles as a Lua table and then copied them to a
C  array.    Concerning  speed,   this  process  is   amazingly  fast.
Concerning memory, it is quite ugly,  as you keep the data three times
times in memory: bytecode, Lua table, C Array.

lua_load possibly allows  to have an efficient parser  able to handle
meta tags (e.g. xml) and document chunks of mixed content between them.

I am quite  happy to see that obviously, the Fathers  of Lua are aware
of these issues and look for solutions. Thanks!



Juergen