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--[[
Copyright (c) 2012-2013 Kaarle Ritvanen
See LICENSE file for license details
--]]
module(..., package.seeall)
local copy = require('acf.util').copy
local function keys(tbl)
local res = {}
for k, v in pairs(tbl) do table.insert(res, k) end
return res
end
backend = require('acf.object').class()
function backend:init(data) self.data = data or {} end
function backend:_get(path)
local res = self.data
for _, comp in ipairs(path) do
if res == nil then return end
assert(type(res) == 'table')
res = res[tonumber(comp) or comp]
end
return res
end
function backend:get(path, tpe)
local res = self:_get(path)
return type(res) == 'table' and keys(res) or res
end
function backend:_set(path, tpe, value)
if tpe == 'table' then value = {} end
if #path == 0 then self.data = value
else
local comps = copy(path)
local name = comps[#comps]
table.remove(comps)
self:_get(comps)[tonumber(name) or name] = value
end
end
function backend:set(mods)
for _, mod in ipairs(mods) do self:_set(unpack(mod)) end
end
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