Yes, thanks for asking.
It is not really a patch, but a set of "token
filters" to be used
with LHF's earlier patch.
Tokens are the first level parsed version of your
Lua code; between
source code and Lua bytecode. They are normally only
handled
internally, but token filter patch allows one to
insert his/her
custom rules, to change the way Lua syntax is.
The elegancy lies in being able to adapt the
language, without
changing the C code a bit. Therefore, this allows
extensions/mods to
be used by anyone, anywhere, on any system. This is
all background,
presentation of what "token filtering" itself is.
Usage:
lua -lfilter yourcode.lua
Loading filter.lua prepares Lua to load the real
code, using the
better/worse/different syntax.
Now, to my packet:
ftools.lua
- higher level interface for making token filters
- ability to have multiple filters, loaded from
separate files
(maybe multiple authors)
ftricond.lua
? cond { true_choice, false_choice } The
ternary operator, as
in C/Perl
fselect.lua
#... -> select('#',...) Shorthand and
more readable to
managing multiple
...[n] -> (select(n,...)) parameter lists
(...)
finc.lua
exp += -> exp = exp + C-style += operations:
myvar += 1
exp -= -> exp = exp -
exp *= -> exp = exp *
exp /= -> exp = exp /
exp ..= -> exp = exp ..
fdotuntil.lua
tbl.until etc. Normally, Lua does not allow
"until", "function",
"repeat", "true", "false", "nil" as table
indices.
There's no harm in using these mods, any valid Lua
code will run with
the filters applied as well. The purpose of token
filtering, by lhf
was to give a testing ground for custom syntax
changes, some of which
might make it to future Lua proper. Based on my
experiences, token
filtering is Simply Great for this, and will reduce
the need for
special this-and-that patches by a magnitude.
-asko
therandthem kirjoitti 7.11.2006 kello 1.09:
I'm new to Lua and do not totally understand the
basic
syntax, let alone this patch you describe. Could
you
provide a simpler overview of what you are
describing
here?
Thanks,
McKinley
--- askok@dnainternet.net wrote:
Attached is a set of token tuning tools, and some
tune-ups, to give your Lua a flashy, almost
syntax-over-sugary look.
I don't promise furry backseats, no built-in XBox
360, but
almost. :)
Requirements:
Lua 5.1 with token filter patch applied
(not
included)
Ignition:
make LUA=path-to-your-modded/lua
Tested on:
OS X 10.4 (but there's nothing system
specific)
Gains:
? cond { true_choice, false_choice } -->
_G['?'](cond){ true_choice, false_choice }
#... -> select('#',...)
...[n] -> (select(n,...))
exp += -> exp = exp +
exp -= -> exp = exp -
exp *= -> exp = exp *
exp /= -> exp = exp /
exp ..= -> exp = exp ..
tbl.until (and other reserved
words:
function, repeat, nil, false, true)
{|, until=
obj:until
=|,|(|{ do -> =|,|(|{ function()
The important part really is the ftools.lua,
which
allows
multiple filters to co-operate, without need to
know
of
each other. As to my knowledge, this hasn't been
possible
earlier.
-asko
