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https://git.shadowkat.net/izaya/OC-PsychOS2.git
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added gamax92's vcomponent lib, required next to zero changes
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6ad21c7832
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197
lib/vcomponent.lua
Normal file
197
lib/vcomponent.lua
Normal file
@ -0,0 +1,197 @@
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local proxylist = {}
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local proxyobjs = {}
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local typelist = {}
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local doclist = {}
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local oproxy = component.proxy
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function component.proxy(address)
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checkArg(1,address,"string")
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if proxyobjs[address] ~= nil then
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return proxyobjs[address]
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end
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return oproxy(address)
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end
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local olist = component.list
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function component.list(filter, exact)
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checkArg(1,filter,"string","nil")
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local result = {}
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local data = {}
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for k,v in olist(filter, exact) do
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data[#data + 1] = k
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data[#data + 1] = v
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result[k] = v
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end
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for k,v in pairs(typelist) do
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if filter == nil or (exact and v == filter) or (not exact and v:find(filter, nil, true)) then
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data[#data + 1] = k
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data[#data + 1] = v
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result[k] = v
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end
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end
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local place = 1
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return setmetatable(result,
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{__call=function()
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local addr,type = data[place], data[place + 1]
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place = place + 2
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return addr, type
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end}
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)
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end
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local otype = component.type
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function component.type(address)
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checkArg(1,address,"string")
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if typelist[address] ~= nil then
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return typelist[address]
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end
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return otype(address)
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end
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local odoc = component.doc
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function component.doc(address, method)
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checkArg(1,address,"string")
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checkArg(2,method,"string")
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if proxylist[address] ~= nil then
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if proxylist[address][method] == nil then
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error("no such method",2)
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end
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if doclist[address] ~= nil then
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return doclist[address][method]
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end
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return nil
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end
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return odoc(address, method)
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end
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local oslot = component.slot
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function component.slot(address)
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checkArg(1,address,"string")
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if proxylist[address] ~= nil then
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return -1 -- vcomponents do not exist in a slot
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end
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return oslot(address)
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end
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local omethods = component.methods
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function component.methods(address)
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checkArg(1,address,"string")
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if proxylist[address] ~= nil then
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local methods = {}
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for k,v in pairs(proxylist[address]) do
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if type(v) == "function" then
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methods[k] = true -- All vcomponent methods are direct
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end
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end
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return methods
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end
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return omethods(address)
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end
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local oinvoke = component.invoke
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function component.invoke(address, method, ...)
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checkArg(1,address,"string")
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checkArg(2,method,"string")
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if proxylist[address] ~= nil then
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if proxylist[address][method] == nil then
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error("no such method",2)
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end
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return proxylist[address][method](...)
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end
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return oinvoke(address, method, ...)
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end
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local ofields = component.fields
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function component.fields(address)
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checkArg(1,address,"string")
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if proxylist[address] ~= nil then
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return {} -- What even is this?
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end
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return ofields(address)
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end
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local componentCallback =
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{
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__call = function(self, ...) return proxylist[self.address][self.name](...) end,
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__tostring = function(self) return (doclist[self.address] ~= nil and doclist[self.address][self.name] ~= nil) and doclist[self.address][self.name] or "function" end
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}
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local vcomponent = {}
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function vcomponent.register(address, ctype, proxy, doc)
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checkArg(1,address,"string")
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checkArg(2,ctype,"string")
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checkArg(3,proxy,"table")
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if proxylist[address] ~= nil then
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return nil, "component already at address"
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elseif component.type(address) ~= nil then
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return nil, "cannot register over real component"
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end
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proxy.address = address
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proxy.type = ctype
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local proxyobj = {}
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for k,v in pairs(proxy) do
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if type(v) == "function" then
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proxyobj[k] = setmetatable({name=k,address=address},componentCallback)
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else
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proxyobj[k] = v
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end
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end
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proxylist[address] = proxy
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proxyobjs[address] = proxyobj
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typelist[address] = ctype
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doclist[address] = doc
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computer.pushSignal("component_added",address,ctype)
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return true
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end
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function vcomponent.unregister(address)
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checkArg(1,address,"string")
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if proxylist[address] == nil then
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if component.type(address) ~= nil then
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return nil, "cannot unregister real component"
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else
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return nil, "no component at address"
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end
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end
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local thetype = typelist[address]
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proxylist[address] = nil
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proxyobjs[address] = nil
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typelist[address] = nil
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doclist[address] = nil
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computer.pushSignal("component_removed",address,thetype)
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return true
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end
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function vcomponent.list()
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local list = {}
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for k,v in pairs(proxylist) do
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list[#list + 1] = {k,typelist[k],v}
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end
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return list
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end
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function vcomponent.resolve(address, componentType)
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checkArg(1, address, "string")
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checkArg(2, componentType, "string", "nil")
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for k,v in pairs(typelist) do
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if componentType == nil or v == componentType then
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if k:sub(1, #address) == address then
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return k
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end
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end
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end
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return nil, "no such component"
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end
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local r = math.random
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function vcomponent.uuid()
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return string.format("%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
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r(0,255),r(0,255),r(0,255),r(0,255),
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r(0,255),r(0,255),
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r(64,79),r(0,255),
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r(128,191),r(0,255),
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r(0,255),r(0,255),r(0,255),r(0,255),r(0,255),r(0,255))
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end
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return vcomponent
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