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Added checking for sparseness and mixed key types when encoding array

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rxi
2015-08-30 19:08:50 +01:00
parent 3845cef229
commit 70556ccea5
2 changed files with 15 additions and 3 deletions
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16
json.lua
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@@ -51,7 +51,19 @@ local function encode_table(val, stack)
stack[val] = true
if val[1] ~= nil then
-- Treat as an array
-- Treat as array -- check keys are valid and it is not sparse
local n = 0
for k in pairs(val) do
local t = type(k)
if t ~= "number" then
error("unexpected key of type '" .. t .. "' in array")
end
n = n + 1
end
if n ~= #val then
error("unexpected sparse array")
end
-- Encode
for i, v in ipairs(val) do
table.insert(res, encode(v, stack))
end
@@ -63,7 +75,7 @@ local function encode_table(val, stack)
for k, v in pairs(val) do
local t = type(k)
if t ~= "string" then
error("expected key of type 'string', got '" .. t .. "'")
error("unexpected key of type '" .. t .. "' in object")
end
table.insert(res, encode(k, stack) .. ":" .. encode(v, stack))
end