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local vm = require 'vm.vm'
local function eachMetaOfArg1(source, callback)
local node, index = vm.getArgInfo(source)
local special = vm.getSpecial(node)
if special == 'setmetatable' and index == 1 then
local mt = node.next.args[2]
if mt then
callback(mt)
end
end
end
local function eachMetaOfRecv(source, callback)
if not source or source.type ~= 'select' then
return
end
if source.index ~= 1 then
return
end
local call = source.vararg
if not call or call.type ~= 'call' then
return
end
local special = vm.getSpecial(call.node)
if special ~= 'setmetatable' then
return
end
local mt = call.args[2]
if mt then
callback(mt)
end
end
function vm.eachMetaValue(source, callback)
vm.eachMeta(source, function (mt)
vm.eachField(mt, function (src)
if vm.getKeyName(src) == 's|__index' then
if src.value then
vm.eachField(src.value, callback)
end
end
end)
end)
end
function vm.eachMeta(source, callback)
eachMetaOfArg1(source, callback)
eachMetaOfRecv(source.value, callback)
end
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