Module:Jf-JSON: Difference between revisions

Revision as of 03:49, 15 September 2016

Revision as of 08:44, 23 September 2016

Line 14:

-- maintained. Enjoy.

--

local VERSION = 2016072820160916.1719 -- version history at end of file

local AUTHOR_NOTE = "-[ JSON.lua package by Jeffrey Friedl (http://regex.info/blog/lua/json) version 2016072820160916.1719 ]-"

--

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-- produces

-- ["one","two",null,null]

--

--

--

--

-- HANDLING LARGE AND/OR PRECISE NUMBERS

--

--

-- Without special handling, numbers in JSON can lose precision in Lua.

-- For example:

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-- (This is done by encoding the numeric data with a Lua table/metatable that returns

-- the possibly-imprecise numeric form when accessed numerically, but the original precise

-- representation when accessed as a string.) You can also explicitly access

-- via JSON:forceString() and JSON:forceNumber())

--

-- Consider the example above, with this option turned on:

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end

local isNumber = {

isNumber = {

__index = isNumber,

__tostring = function(T) return T.S end,

__unm = function(op) return getnum(op) end,

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__le = function(op1, op2) return getnum(op1) <= getnum(op2) end,

}

isNumber.__index = {isNumber

function OBJDEF:asNumber(item)

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end

end

--

-- Given an item that might be a normal string or number, or might be an 'isNumber' object defined above,

-- return the string version. This shouldn't be needed often because the 'isNumber' object should autoconvert

-- to a string in most cases, but it's here to allow it to be forced when needed.

--

function OBJDEF:forceString(item)

if type(item) == 'table' and type(item.S) == 'string' then

return item.S

else

return tostring(item)

end

end

--

-- Given an item that might be a normal string or number, or might be an 'isNumber' object defined above,

-- return the numeric version.

--

function OBJDEF:forceNumber(item)

if type(item) == 'table' and type(item.N) == 'number' then

return item.N

else

return tonumber(item)

end

end

local function unicode_codepoint_as_utf8(codepoint)

Line 1,322 ⟶ 1,350:

--

-- Version history:

--

-- 20160916.19 Fixed the isNumber.__index assignment (thanks to Jack Taylor)

--

-- 2016072820160730.1718 Added concatenationJSON:forceString() to the metatable forand JSON:asNumberforceNumber().

--

-- 20160728.17 Added concatenation to the metatable for JSON:asNumber()

--

-- 20160709.16 Could crash if not passed an options table (thanks jarno heikkinen <[e-mail]>).