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util.serialization: Add option for allowing multiple references to the same table (but not cycles)

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This commit is contained in:
Kim Alvefur 2018-10-27 12:43:03 +02:00
parent 2801e1f100
commit fdbc23fab6
2 changed files with 25 additions and 1 deletions
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10
util/serialization.lua
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@ -120,6 +120,7 @@ local function new(opt)
local hex = opt.hex;
local freeze = opt.freeze;
local maxdepth = opt.maxdepth or 127;
local multirefs = opt.multiref;
-- serialize one table, recursively
-- t - table being serialized
@ -136,7 +137,10 @@ local function new(opt)
return l;
end
-- Keep track of table loops
local ot = t; -- reference pre-freeze
o[t] = true;
o[ot] = true;
if freeze == true then
-- opportunity to do pre-serialization
@ -200,6 +204,12 @@ local function new(opt)
o[l], l = s_rep(indentwith, d-1), l + 1;
end
o[l], l = tend, l +1;
if multirefs then
o[t] = nil;
o[ot] = nil;
end
return l;
end