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ex15.3.lua
30 lines (29 loc) · 878 Bytes
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ex15.3.lua
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local function get_serialize(s)
if type(s) == "string" and not string.match(s, "[%a_][%a%d_]*") then
return string.format("[%q]", s)
end
return s
end
local function serialize (o, indent)
indent = indent or 0
local t = type(o)
if t == "number" or t == "string" or t == "boolean" or
t == "nil" then
io.write(string.format("%q", o))
elseif t == "table" then
io.write("\n", string.rep(" ", indent), "{\n")
indent = indent + 2
for k,v in pairs(o) do
io.write(string.rep(" ", indent), string.format("%s = ", get_serialize(k)))
serialize(v, indent)
io.write(",\n")
end
indent = indent - 2
io.write(string.rep(" ", indent), "}\n")
else
error("cannot serialize a " .. type(o))
end
end
local s = { x = 10, y = 20, z = 30}
local t = { ["1@#"] = 1, b = 2, c = 3, d = s}
serialize(t)