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local vm = require 'vm.vm'
local guide = require 'parser.guide'
local function getLibrary(source)
if source.type == 'library' then
return source
end
if source.library then
return source.library
end
local defs = vm.getDefs(source)
for _, def in ipairs(defs) do
if def.type == 'library' then
return def
end
end
return nil
end
function vm.getLibrary(source)
local cache = vm.getCache('getLibrary')[source]
if cache ~= nil then
return cache
end
local unlock = vm.lock('getLibrary', source)
if not unlock then
return
end
cache = getLibrary(source) or false
vm.getCache('getLibrary')[source] = cache
unlock()
return cache
end
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