Re: Simple pickler

[PA <petite.abeille@...>]

On May 18, 2007, at 19:31, Luis Carvalho wrote:

> I've updated the pickler code with your suggestions and a few changes, 
> and
> it's now in version 0.2. I can post it later (wiki?) if there's enough
> interest, or send the code privately.

Very nice. Would be interested to see the final version as well :)

To follow the established tradition of "Lua gives you the power; you 
build the mechanisms" [1], here is yet another serialization process 
based on PiL1 [2]:

local Store = require( 'Store' )

local a = {x = 1, y = 2; {3, 4, 5}}
a[2] = a -- cycle
a.z = a[1] -- shared subtable
a.f = function(n) return n+1 end

-- cross refs
local b = {k = a[1]}
a[3] = b

-- io.open( 'a.txt', 'wb' ):write( Store( a ) )
-- io.open( 'b.txt', 'wb' ):write( Store( b ) )

--------------------------------------
-- another time, another place
--------------------------------------

a = Store( io.open( 'a.txt', 'rb' ):read( '*a' ) )

print( 'a.f', a.f( math.pi ) )

for aKey, aValue in pairs( a ) do
    print( aKey, aValue )
end

b = Store( io.open( 'b.txt', 'rb' ):read( '*a' ) )

for aKey, aValue in pairs( b ) do
    print( aKey, aValue )
end


[1] http://lua-users.org/wiki/LuaRecipes
[2] http://www.lua.org/pil/12.1.2.html

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Attachment: b.txt
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