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ruanhaishen
Lua Json
Commits
3389b0d2
Commit
3389b0d2
authored
May 11, 2019
by
seny
Browse files
Fix docs
parent
86e5afd3
Changes
1
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README.md
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3389b0d2
...
...
@@ -102,14 +102,13 @@ assert(out.arr2.__array == 5) -- Access to the number of items in a sparse array
-- This is helpful, for example, when objects are exchanged with both trusted and untrusted parties.
-- Various custom filters/wrappers can also be implemented using this API.
local function construct(t)
return setmetatable(t, {
__tostring = function (t) return (t.a or '') .. (t.b or '') end,
__toA = function (t) return {A = t.a} end, -- [a -> A]
__toB = function (t) return {B = t.b} end, -- [b -> B]
})
end
local mt = {
__tostring = function (t) return (t.a or '') .. (t.b or '') end,
__toA = function (t) return {A = t.a} end, -- [a -> A]
__toB = function (t) return {B = t.b} end, -- [b -> B]
}
local function construct(t) return setmetatable(t, mt) end
local function fromA(t) return construct{a = t.A} end -- [A -> a]
local function fromB(t) return construct{b = t.B} end -- [B -> b]
...
...
@@ -132,16 +131,24 @@ these values:
```
Lua
local json = require 'json'
local function
check
(t)
local function
filter
(t)
for k, v in pairs(t) do
if type(v) == 'number' and (v ~= v or v == 1/0 or v == -1/0) then
error(("invalid value '%f' at index '%s'"):format(v, k))
end
end
return
setmetatable(t, nil)
return
t
end
local mt = {__toJSON = check}
local mt = {
__toJSON = function (t)
return setmetatable(filter(t), nil)
end,
}
local function check(t)
return setmetatable(t, mt)
end
local t = {
val = 1.234,
...
...
@@ -158,10 +165,10 @@ local s = [[{
}]]
-- Strict encoding
print(json.encode(
setmetatable(t, m
t)))
print(json.encode(
check(
t)))
-- Strict decoding
print(json.decode(s, nil,
check
))
print(json.decode(s, nil,
filter
))
```
...
...
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