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local guide = require 'parser.guide'
local vm = require 'vm.vm'
local function getGlobals(root)
local env = guide.getENV(root)
local cache = {}
local mark = {}
vm.eachField(env, function (info)
local src = info.source
if mark[src] then
return
end
mark[src] = true
local name = info.key
if not name then
return
end
if not cache[name] then
cache[name] = {
key = name,
mode = {},
}
end
cache[name][#cache[name]+1] = info
cache[name].mode[info.mode] = true
vm.cache.getGlobal[src] = name
end)
return cache
end
function vm.getGlobals(source)
source = guide.getRoot(source)
local cache = vm.cache.getGlobals[source]
if cache ~= nil then
return cache
end
local unlock = vm.lock('getGlobals', source)
if not unlock then
return nil
end
cache = getGlobals(source) or false
vm.cache.getGlobals[source] = cache
unlock()
return cache
end
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