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| author | Lars Mueller <appgurulars@gmx.de> | 2022-08-17 11:35:26 +0200 |
|---|---|---|
| committer | sfan5 <sfan5@live.de> | 2022-09-14 13:48:06 +0200 |
| commit | 94f55cf406dddcfd4d3507e9da7f64e5de021ee4 (patch) | |
| tree | 9f512fe963ff84cf9ba571c9d281fba5c65da63d | |
| parent | a20b758e199eb48da7d99ba23808e15d987f2d3f (diff) | |
| download | minetest-94f55cf406dddcfd4d3507e9da7f64e5de021ee4.tar.gz minetest-94f55cf406dddcfd4d3507e9da7f64e5de021ee4.tar.bz2 minetest-94f55cf406dddcfd4d3507e9da7f64e5de021ee4.zip | |
Serialize: Use numbers for refs to work around LuaJIT limits
| -rw-r--r-- | builtin/common/serialize.lua | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/builtin/common/serialize.lua b/builtin/common/serialize.lua index caf989e69..06eb181e0 100644 --- a/builtin/common/serialize.lua +++ b/builtin/common/serialize.lua @@ -61,17 +61,18 @@ end -- Serializes Lua nil, booleans, numbers, strings, tables and even functions -- Tables are referenced by reference, strings are referenced by value. Supports circular tables. local function serialize(value, write) - local reference, refnum = "r1", 1 - -- [object] = reference string + local reference, refnum = "1", 1 + -- [object] = reference local references = {} -- Circular tables that must be filled using `table[key] = value` statements local to_fill = {} for object, count in pairs(count_objects(value)) do local type_ = type(object) -- Object must appear more than once. If it is a string, the reference has to be shorter than the string. - if count >= 2 and (type_ ~= "string" or #reference + 2 < #object) then + if count >= 2 and (type_ ~= "string" or #reference + 5 < #object) then + write"_[" write(reference) - write("=") + write("]=") if type_ == "table" then write("{}") elseif type_ == "function" then @@ -85,7 +86,7 @@ local function serialize(value, write) to_fill[object] = reference end refnum = refnum + 1 - reference = ("r%X"):format(refnum) + reference = ("%d"):format(refnum) end end -- Used to decide whether we should do "key=..." @@ -110,7 +111,9 @@ local function serialize(value, write) -- Reference types: table, function and string local ref = references[value] if ref then - return write(ref) + write"_[" + write(ref) + return write"]" end if type_ == "string" then return write(quote(value)) @@ -156,7 +159,9 @@ local function serialize(value, write) -- Write the statements to fill circular tables for table, ref in pairs(to_fill) do for k, v in pairs(table) do + write("_[") write(ref) + write("]") if use_short_key(k) then write(".") write(k) @@ -202,7 +207,7 @@ function core.deserialize(str, safe) if not func then return nil, err end -- math.huge is serialized to inf, NaNs are serialized to nan by Lua - local env = {inf = math_huge, nan = nan} + local env = {inf = math_huge, nan = nan, _ = {}} if safe then env.loadstring = dummy_func else |