#118 cleanup started of scada-common

reactor-plc/startup.lua

@@ -173,7 +173,6 @@ local function main()
                 log.debug("init> running without networking")
             end
 
----@diagnostic disable-next-line: param-type-mismatch
             util.push_event("clock_start")
 
             println("boot> completed")

reactor-plc/threads.lua

@@ -266,7 +266,6 @@ function threads.thread__main(smem, init)
             -- this thread cannot be slept because it will miss events (namely "terminate" otherwise)
             if not plc_state.shutdown then
                 log.info("main thread restarting now...")
----@diagnostic disable-next-line: param-type-mismatch
                 util.push_event("clock_start")
             end
         end

scada-common/comms.lua

@@ -16,7 +16,7 @@ local max_distance = nil
 
 comms.version = "1.4.0"
 
----@alias PROTOCOLS integer
+---@enum PROTOCOLS
 local PROTOCOLS = {
     MODBUS_TCP = 0,     -- our "MODBUS TCP"-esque protocol
     RPLC = 1,           -- reactor PLC protocol
@@ -25,7 +25,7 @@ local PROTOCOLS = {
     COORD_API = 4       -- data/control packets for pocket computers to/from coordinators
 }
 
----@alias RPLC_TYPES integer
+---@enum RPLC_TYPES
 local RPLC_TYPES = {
     STATUS = 0,         -- reactor/system status
     MEK_STRUCT = 1,     -- mekanism build structure
@@ -40,7 +40,7 @@ local RPLC_TYPES = {
     AUTO_BURN_RATE = 10 -- set an automatic burn rate, PLC will respond with status, enable toggle speed limited
 }
 
----@alias SCADA_MGMT_TYPES integer
+---@enum SCADA_MGMT_TYPES
 local SCADA_MGMT_TYPES = {
     ESTABLISH = 0,      -- establish new connection
     KEEP_ALIVE = 1,     -- keep alive packet w/ RTT
@@ -49,7 +49,7 @@ local SCADA_MGMT_TYPES = {
     RTU_DEV_REMOUNT = 4 -- RTU multiblock possbily changed (formed, unformed) due to PPM remount
 }
 
----@alias SCADA_CRDN_TYPES integer
+---@enum SCADA_CRDN_TYPES
 local SCADA_CRDN_TYPES = {
     INITIAL_BUILDS = 0, -- initial, complete builds packet to the coordinator
     FAC_BUILDS = 1,     -- facility RTU builds
@@ -60,12 +60,11 @@ local SCADA_CRDN_TYPES = {
     UNIT_CMD = 6        -- command a reactor unit
 }
 
----@alias CAPI_TYPES integer
+---@enum CAPI_TYPES
 local CAPI_TYPES = {
-    ESTABLISH = 0       -- initial greeting
 }
 
----@alias ESTABLISH_ACK integer
+---@enum ESTABLISH_ACK
 local ESTABLISH_ACK = {
     ALLOW = 0,          -- link approved
     DENY = 1,           -- link denied
@@ -73,7 +72,7 @@ local ESTABLISH_ACK = {
     BAD_VERSION = 3     -- link denied due to comms version mismatch
 }
 
----@alias DEVICE_TYPES integer
+---@enum DEVICE_TYPES
 local DEVICE_TYPES = {
     PLC = 0,            -- PLC device type for establish
     RTU = 1,            -- RTU device type for establish
@@ -81,7 +80,7 @@ local DEVICE_TYPES = {
     CRDN = 3            -- coordinator device type for establish
 }
 
----@alias RTU_UNIT_TYPES integer
+---@enum RTU_UNIT_TYPES
 local RTU_UNIT_TYPES = {
     REDSTONE = 0,       -- redstone I/O
     BOILER_VALVE = 1,   -- boiler mekanism 10.1+
@@ -92,7 +91,7 @@ local RTU_UNIT_TYPES = {
     ENV_DETECTOR = 6    -- environment detector
 }
 
----@alias PLC_AUTO_ACK integer
+---@enum PLC_AUTO_ACK
 local PLC_AUTO_ACK = {
     FAIL = 0,           -- failed to set burn rate/burn rate invalid
     DIRECT_SET_OK = 1,  -- successfully set burn rate
@@ -100,7 +99,7 @@ local PLC_AUTO_ACK = {
     ZERO_DIS_OK = 3     -- successfully disabled reactor with < 0.01 burn rate
 }
 
----@alias FAC_COMMANDS integer
+---@enum FAC_COMMANDS
 local FAC_COMMANDS = {
     SCRAM_ALL = 0,      -- SCRAM all reactors
     STOP = 1,           -- stop automatic control
@@ -108,7 +107,7 @@ local FAC_COMMANDS = {
     ACK_ALL_ALARMS = 3  -- acknowledge all alarms on all units
 }
 
----@alias UNIT_COMMANDS integer
+---@enum UNIT_COMMANDS
 local UNIT_COMMANDS = {
     SCRAM = 0,          -- SCRAM the reactor
     START = 1,          -- start the reactor
@@ -152,6 +151,7 @@ function comms.set_trusted_range(distance)
 end
 
 -- generic SCADA packet object
+---@nodiscard
 function comms.scada_packet()
     local self = {
         modem_msg_in = nil,
@@ -180,11 +180,12 @@ function comms.scada_packet()
     end
 
     -- parse in a modem message as a SCADA packet
-    ---@param side string
-    ---@param sender integer
-    ---@param reply_to integer
-    ---@param message any
-    ---@param distance integer
+    ---@param side string modem side
+    ---@param sender integer sender port
+    ---@param reply_to integer reply port
+    ---@param message any message body
+    ---@param distance integer transmission distance
+    ---@return boolean valid valid message received
     function public.receive(side, sender, reply_to, message, distance)
         self.modem_msg_in = {
             iface = side,
@@ -223,24 +224,34 @@ function comms.scada_packet()
 
     -- public accessors --
 
+    ---@nodiscard
     function public.modem_event() return self.modem_msg_in end
+    ---@nodiscard
     function public.raw_sendable() return self.raw end
 
+    ---@nodiscard
     function public.local_port() return self.modem_msg_in.s_port end
+    ---@nodiscard
     function public.remote_port() return self.modem_msg_in.r_port end
 
+    ---@nodiscard
     function public.is_valid() return self.valid end
 
+    ---@nodiscard
     function public.seq_num() return self.seq_num end
+    ---@nodiscard
     function public.protocol() return self.protocol end
+    ---@nodiscard
     function public.length() return self.length end
+    ---@nodiscard
     function public.data() return self.payload end
 
     return public
 end
 
--- MODBUS packet
+-- MODBUS packet<br>
 -- modeled after MODBUS TCP packet
+---@nodiscard
 function comms.modbus_packet()
     local self = {
         frame = nil,
@@ -309,9 +320,11 @@ function comms.modbus_packet()
     end
 
     -- get raw to send
+    ---@nodiscard
     function public.raw_sendable() return self.raw end
 
     -- get this packet as a frame with an immutable relation to this object
+    ---@nodiscard
     function public.get()
         ---@class modbus_frame
         local frame = {
@@ -330,6 +343,7 @@ function comms.modbus_packet()
 end
 
 -- reactor PLC packet
+---@nodiscard
 function comms.rplc_packet()
     local self = {
         frame = nil,
@@ -410,9 +424,11 @@ function comms.rplc_packet()
     end
 
     -- get raw to send
+    ---@nodiscard
     function public.raw_sendable() return self.raw end
 
     -- get this packet as a frame with an immutable relation to this object
+    ---@nodiscard
     function public.get()
         ---@class rplc_frame
         local frame = {
@@ -430,6 +446,7 @@ function comms.rplc_packet()
 end
 
 -- SCADA management packet
+---@nodiscard
 function comms.mgmt_packet()
     local self = {
         frame = nil,
@@ -500,9 +517,11 @@ function comms.mgmt_packet()
     end
 
     -- get raw to send
+    ---@nodiscard
     function public.raw_sendable() return self.raw end
 
     -- get this packet as a frame with an immutable relation to this object
+    ---@nodiscard
     function public.get()
         ---@class mgmt_frame
         local frame = {
@@ -519,6 +538,7 @@ function comms.mgmt_packet()
 end
 
 -- SCADA coordinator packet
+---@nodiscard
 function comms.crdn_packet()
     local self = {
         frame = nil,
@@ -532,6 +552,7 @@ function comms.crdn_packet()
     local public = {}
 
     -- check that type is known
+    ---@nodiscard
     local function _crdn_type_valid()
         return self.type == SCADA_CRDN_TYPES.INITIAL_BUILDS or
                 self.type == SCADA_CRDN_TYPES.FAC_BUILDS or
@@ -590,9 +611,11 @@ function comms.crdn_packet()
     end
 
     -- get raw to send
+    ---@nodiscard
     function public.raw_sendable() return self.raw end
 
     -- get this packet as a frame with an immutable relation to this object
+    ---@nodiscard
     function public.get()
         ---@class crdn_frame
         local frame = {
@@ -609,7 +632,8 @@ function comms.crdn_packet()
 end
 
 -- coordinator API (CAPI) packet
--- @todo
+---@todo implement for pocket access
+---@nodiscard
 function comms.capi_packet()
     local self = {
         frame = nil,
@@ -623,7 +647,7 @@ function comms.capi_packet()
     local public = {}
 
     local function _capi_type_valid()
-        -- @todo
+        ---@todo
         return false
     end
 
@@ -675,9 +699,11 @@ function comms.capi_packet()
     end
 
     -- get raw to send
+    ---@nodiscard
     function public.raw_sendable() return self.raw end
 
     -- get this packet as a frame with an immutable relation to this object
+    ---@nodiscard
     function public.get()
         ---@class capi_frame
         local frame = {
@@ -694,6 +720,7 @@ function comms.capi_packet()
 end
 
 -- convert rtu_t to RTU unit type
+---@nodiscard
 ---@param type rtu_t
 ---@return RTU_UNIT_TYPES|nil
 function comms.rtu_t_to_unit_type(type)
@@ -717,6 +744,7 @@ function comms.rtu_t_to_unit_type(type)
 end
 
 -- convert RTU unit type to rtu_t
+---@nodiscard
 ---@param utype RTU_UNIT_TYPES
 ---@return rtu_t|nil
 function comms.advert_type_to_rtu_t(utype)

scada-common/crypto.lua

@@ -70,6 +70,7 @@ function crypto.init(password, server_port)
 end
 
 -- encrypt plaintext
+---@nodiscard
 ---@param plaintext string
 ---@return table initial_value, string ciphertext
 function crypto.encrypt(plaintext)
@@ -113,6 +114,7 @@ function crypto.encrypt(plaintext)
 end
 
 -- decrypt ciphertext
+---@nodiscard
 ---@param iv string CTR initial value
 ---@param ciphertext string ciphertext hex
 ---@return string plaintext
@@ -135,6 +137,7 @@ function crypto.decrypt(iv, ciphertext)
 end
 
 -- generate HMAC of message
+---@nodiscard
 ---@param message_hex string initial value concatenated with ciphertext
 function crypto.hmac(message_hex)
     local start = util.time()
@@ -201,11 +204,12 @@ function crypto.secure_modem(modem)
     end
 
     -- parse in a modem message as a network packet
-    ---@param side string
-    ---@param sender integer
-    ---@param reply_to integer
+    ---@nodiscard
+    ---@param side string modem side
+    ---@param sender integer sender port
+    ---@param reply_to integer reply port
     ---@param message any encrypted packet sent with secure_modem.transmit
-    ---@param distance integer
+    ---@param distance integer transmission distance
     ---@return string side, integer sender, integer reply_to, any plaintext_message, integer distance
     function public.receive(side, sender, reply_to, message, distance)
         local body = ""

scada-common/log.lua

@@ -18,7 +18,7 @@ log.MODE = MODE
 -- whether to log debug messages or not
 local LOG_DEBUG = true
 
-local _log_sys = {
+local log_sys = {
     path = "/log.txt",
     mode = MODE.APPEND,
     file = nil,
@@ -33,27 +33,25 @@ local free_space = fs.getFreeSpace
 ---@param write_mode MODE
 ---@param dmesg_redirect? table terminal/window to direct dmesg to
 function log.init(path, write_mode, dmesg_redirect)
-    _log_sys.path = path
-    _log_sys.mode = write_mode
+    log_sys.path = path
+    log_sys.mode = write_mode
 
-    if _log_sys.mode == MODE.APPEND then
-        _log_sys.file = fs.open(path, "a")
+    if log_sys.mode == MODE.APPEND then
+        log_sys.file = fs.open(path, "a")
     else
-        _log_sys.file = fs.open(path, "w")
+        log_sys.file = fs.open(path, "w")
     end
 
     if dmesg_redirect then
-        _log_sys.dmesg_out = dmesg_redirect
+        log_sys.dmesg_out = dmesg_redirect
     else
-        _log_sys.dmesg_out = term.current()
+        log_sys.dmesg_out = term.current()
     end
 end
 
 -- direct dmesg output to a monitor/window
 ---@param window table window or terminal reference
-function log.direct_dmesg(window)
-    _log_sys.dmesg_out = window
-end
+function log.direct_dmesg(window) log_sys.dmesg_out = window end
 
 -- private log write function
 ---@param msg string
@@ -64,8 +62,8 @@ local function _log(msg)
 
     -- attempt to write log
     local status, result = pcall(function ()
-        _log_sys.file.writeLine(stamped)
-        _log_sys.file.flush()
+        log_sys.file.writeLine(stamped)
+        log_sys.file.flush()
     end)
 
     -- if we don't have space, we need to create a new log file
@@ -80,18 +78,18 @@ local function _log(msg)
         end
     end
 
-    if out_of_space or (free_space(_log_sys.path) < 100) then
+    if out_of_space or (free_space(log_sys.path) < 100) then
         -- delete the old log file before opening a new one
-        _log_sys.file.close()
-        fs.delete(_log_sys.path)
+        log_sys.file.close()
+        fs.delete(log_sys.path)
 
         -- re-init logger and pass dmesg_out so that it doesn't change
-        log.init(_log_sys.path, _log_sys.mode, _log_sys.dmesg_out)
+        log.init(log_sys.path, log_sys.mode, log_sys.dmesg_out)
 
         -- leave a message
-        _log_sys.file.writeLine(time_stamp .. "recycled log file")
-        _log_sys.file.writeLine(stamped)
-        _log_sys.file.flush()
+        log_sys.file.writeLine(time_stamp .. "recycled log file")
+        log_sys.file.writeLine(stamped)
+        log_sys.file.flush()
     end
 end
 
@@ -109,7 +107,7 @@ function log.dmesg(msg, tag, tag_color)
     tag = util.strval(tag)
 
     local t_stamp = string.format("%12.2f", os.clock())
-    local out = _log_sys.dmesg_out
+    local out = log_sys.dmesg_out
 
     if out ~= nil then
         local out_w, out_h = out.getSize()
@@ -197,6 +195,7 @@ function log.dmesg(msg, tag, tag_color)
 end
 
 -- print a dmesg message, but then show remaining seconds instead of timestamp
+---@nodiscard
 ---@param msg string message
 ---@param tag? string log tag
 ---@param tag_color? integer log tag color
@@ -204,7 +203,7 @@ end
 function log.dmesg_working(msg, tag, tag_color)
     local ts_coord = log.dmesg(msg, tag, tag_color)
 
-    local out = _log_sys.dmesg_out
+    local out = log_sys.dmesg_out
     local width = (ts_coord.x2 - ts_coord.x1) + 1
 
     if out ~= nil then

scada-common/mqueue.lua

@@ -4,7 +4,7 @@
 
 local mqueue = {}
 
----@alias MQ_TYPE integer
+---@enum MQ_TYPE
 local TYPE = {
     COMMAND = 0,
     DATA = 1,
@@ -14,6 +14,7 @@ local TYPE = {
 mqueue.TYPE = TYPE
 
 -- create a new message queue
+---@nodiscard
 function mqueue.new()
     local queue = {}
 
@@ -35,10 +36,13 @@ function mqueue.new()
     function public.length() return #queue end
 
     -- check if queue is empty
+    ---@nodiscard
     ---@return boolean is_empty
     function public.empty() return #queue == 0 end
 
     -- check if queue has contents
+    ---@nodiscard
+    ---@return boolean has_contents
     function public.ready() return #queue ~= 0 end
 
     -- push a new item onto the queue
@@ -68,6 +72,7 @@ function mqueue.new()
     end
 
     -- get an item off the queue
+    ---@nodiscard
     ---@return queue_item|nil
     function public.pop()
         if #queue > 0 then

scada-common/ppm.lua

@@ -24,7 +24,7 @@ ppm.VIRTUAL_DEVICE_TYPE = VIRTUAL_DEVICE_TYPE
 
 local REPORT_FREQUENCY = 20 -- log every 20 faults per function
 
-local _ppm_sys = {
+local ppm_sys = {
     mounts = {},
     next_vid = 0,
     auto_cf = false,
@@ -34,11 +34,9 @@ local _ppm_sys = {
     mute = false
 }
 
--- wrap peripheral calls with lua protected call as we don't want a disconnect to crash a program
----
----also provides peripheral-specific fault checks (auto-clear fault defaults to true)
----
----assumes iface is a valid peripheral
+-- wrap peripheral calls with lua protected call as we don't want a disconnect to crash a program<br>
+-- also provides peripheral-specific fault checks (auto-clear fault defaults to true)<br>
+-- assumes iface is a valid peripheral
 ---@param iface string CC peripheral interface
 local function peri_init(iface)
     local self = {
@@ -68,7 +66,7 @@ local function peri_init(iface)
             if status then
                 -- auto fault clear
                 if self.auto_cf then self.faulted = false end
-                if _ppm_sys.auto_cf then _ppm_sys.faulted = false end
+                if ppm_sys.auto_cf then ppm_sys.faulted = false end
 
                 self.fault_counts[key] = 0
 
@@ -80,10 +78,10 @@ local function peri_init(iface)
                 self.faulted = true
                 self.last_fault = result
 
-                _ppm_sys.faulted = true
-                _ppm_sys.last_fault = result
+                ppm_sys.faulted = true
+                ppm_sys.last_fault = result
 
-                if not _ppm_sys.mute and (self.fault_counts[key] % REPORT_FREQUENCY == 0) then
+                if not ppm_sys.mute and (self.fault_counts[key] % REPORT_FREQUENCY == 0) then
                     local count_str = ""
                     if self.fault_counts[key] > 0 then
                         count_str = " [" .. self.fault_counts[key] .. " total faults]"
@@ -95,7 +93,7 @@ local function peri_init(iface)
                 self.fault_counts[key] = self.fault_counts[key] + 1
 
                 if result == "Terminated" then
-                    _ppm_sys.terminate = true
+                    ppm_sys.terminate = true
                 end
 
                 return ACCESS_FAULT
@@ -136,10 +134,10 @@ local function peri_init(iface)
             self.faulted = true
             self.last_fault = UNDEFINED_FIELD
 
-            _ppm_sys.faulted = true
-            _ppm_sys.last_fault = UNDEFINED_FIELD
+            ppm_sys.faulted = true
+            ppm_sys.last_fault = UNDEFINED_FIELD
 
-            if not _ppm_sys.mute and (self.fault_counts[key] % REPORT_FREQUENCY == 0) then
+            if not ppm_sys.mute and (self.fault_counts[key] % REPORT_FREQUENCY == 0) then
                 local count_str = ""
                 if self.fault_counts[key] > 0 then
                     count_str = " [" .. self.fault_counts[key] .. " total calls]"
@@ -169,48 +167,35 @@ end
 -- REPORTING --
 
 -- silence error prints
-function ppm.disable_reporting()
-    _ppm_sys.mute = true
-end
+function ppm.disable_reporting() ppm_sys.mute = true end
 
 -- allow error prints
-function ppm.enable_reporting()
-    _ppm_sys.mute = false
-end
+function ppm.enable_reporting() ppm_sys.mute = false end
 
 -- FAULT MEMORY --
 
 -- enable automatically clearing fault flag
-function ppm.enable_afc()
-    _ppm_sys.auto_cf = true
-end
+function ppm.enable_afc() ppm_sys.auto_cf = true end
 
 -- disable automatically clearing fault flag
-function ppm.disable_afc()
-    _ppm_sys.auto_cf = false
-end
+function ppm.disable_afc() ppm_sys.auto_cf = false end
 
 -- clear fault flag
-function ppm.clear_fault()
-    _ppm_sys.faulted = false
-end
+function ppm.clear_fault() ppm_sys.faulted = false end
 
 -- check fault flag
-function ppm.is_faulted()
-    return _ppm_sys.faulted
-end
+---@nodiscard
+function ppm.is_faulted() return ppm_sys.faulted end
 
 -- get the last fault message
-function ppm.get_last_fault()
-    return _ppm_sys.last_fault
-end
+---@nodiscard
+function ppm.get_last_fault() return ppm_sys.last_fault end
 
 -- TERMINATION --
 
 -- if a caught error was a termination request
-function ppm.should_terminate()
-    return _ppm_sys.terminate
-end
+---@nodiscard
+function ppm.should_terminate() return ppm_sys.terminate end
 
 -- MOUNTING --
 
@@ -218,12 +203,12 @@ end
 function ppm.mount_all()
     local ifaces = peripheral.getNames()
 
-    _ppm_sys.mounts = {}
+    ppm_sys.mounts = {}
 
     for i = 1, #ifaces do
-        _ppm_sys.mounts[ifaces[i]] = peri_init(ifaces[i])
+        ppm_sys.mounts[ifaces[i]] = peri_init(ifaces[i])
 
-        log.info(util.c("PPM: found a ", _ppm_sys.mounts[ifaces[i]].type, " (", ifaces[i], ")"))
+        log.info(util.c("PPM: found a ", ppm_sys.mounts[ifaces[i]].type, " (", ifaces[i], ")"))
     end
 
     if #ifaces == 0 then
@@ -232,6 +217,7 @@ function ppm.mount_all()
 end
 
 -- mount a particular device
+---@nodiscard
 ---@param iface string CC peripheral interface
 ---@return string|nil type, table|nil device
 function ppm.mount(iface)
@@ -241,10 +227,10 @@ function ppm.mount(iface)
 
     for i = 1, #ifaces do
         if iface == ifaces[i] then
-            _ppm_sys.mounts[iface] = peri_init(iface)
+            ppm_sys.mounts[iface] = peri_init(iface)
 
-            pm_type = _ppm_sys.mounts[iface].type
-            pm_dev = _ppm_sys.mounts[iface].dev
+            pm_type = ppm_sys.mounts[iface].type
+            pm_dev = ppm_sys.mounts[iface].dev
 
             log.info(util.c("PPM: mount(", iface, ") -> found a ", pm_type))
             break
@@ -255,26 +241,27 @@ function ppm.mount(iface)
 end
 
 -- mount a virtual, placeholder device (specifically designed for RTU startup with missing devices)
+---@nodiscard
 ---@return string type, table device
 function ppm.mount_virtual()
-    local iface = "ppm_vdev_" .. _ppm_sys.next_vid
+    local iface = "ppm_vdev_" .. ppm_sys.next_vid
 
-    _ppm_sys.mounts[iface] = peri_init("__virtual__")
-    _ppm_sys.next_vid = _ppm_sys.next_vid + 1
+    ppm_sys.mounts[iface] = peri_init("__virtual__")
+    ppm_sys.next_vid = ppm_sys.next_vid + 1
 
     log.info(util.c("PPM: mount_virtual() -> allocated new virtual device ", iface))
 
-    return _ppm_sys.mounts[iface].type, _ppm_sys.mounts[iface].dev
+    return ppm_sys.mounts[iface].type, ppm_sys.mounts[iface].dev
 end
 
 -- manually unmount a peripheral from the PPM
 ---@param device table device table
 function ppm.unmount(device)
     if device then
-        for side, data in pairs(_ppm_sys.mounts) do
+        for side, data in pairs(ppm_sys.mounts) do
             if data.dev == device then
                 log.warning(util.c("PPM: manually unmounted ", data.type, " mounted to ", side))
-                _ppm_sys.mounts[side] = nil
+                ppm_sys.mounts[side] = nil
                 break
             end
         end
@@ -282,6 +269,7 @@ function ppm.unmount(device)
 end
 
 -- handle peripheral_detach event
+---@nodiscard
 ---@param iface string CC peripheral interface
 ---@return string|nil type, table|nil device
 function ppm.handle_unmount(iface)
@@ -289,7 +277,7 @@ function ppm.handle_unmount(iface)
     local pm_type = nil
 
     -- what got disconnected?
-    local lost_dev = _ppm_sys.mounts[iface]
+    local lost_dev = ppm_sys.mounts[iface]
 
     if lost_dev then
         pm_type = lost_dev.type
@@ -300,7 +288,7 @@ function ppm.handle_unmount(iface)
         log.error(util.c("PPM: lost device unknown to the PPM mounted to ", iface))
     end
 
-    _ppm_sys.mounts[iface] = nil
+    ppm_sys.mounts[iface] = nil
 
     return pm_type, pm_dev
 end
@@ -308,23 +296,26 @@ end
 -- GENERAL ACCESSORS --
 
 -- list all available peripherals
+---@nodiscard
 ---@return table names
 function ppm.list_avail()
     return peripheral.getNames()
 end
 
 -- list mounted peripherals
+---@nodiscard
 ---@return table mounts
 function ppm.list_mounts()
-    return _ppm_sys.mounts
+    return ppm_sys.mounts
 end
 
 -- get a mounted peripheral side/interface by device table
+---@nodiscard
 ---@param device table device table
 ---@return string|nil iface CC peripheral interface
 function ppm.get_iface(device)
     if device then
-        for side, data in pairs(_ppm_sys.mounts) do
+        for side, data in pairs(ppm_sys.mounts) do
             if data.dev == device then return side end
         end
     end
@@ -333,30 +324,33 @@ function ppm.get_iface(device)
 end
 
 -- get a mounted peripheral by side/interface
+---@nodiscard
 ---@param iface string CC peripheral interface
 ---@return table|nil device function table
 function ppm.get_periph(iface)
-    if _ppm_sys.mounts[iface] then
-        return _ppm_sys.mounts[iface].dev
+    if ppm_sys.mounts[iface] then
+        return ppm_sys.mounts[iface].dev
     else return nil end
 end
 
 -- get a mounted peripheral type by side/interface
+---@nodiscard
 ---@param iface string CC peripheral interface
 ---@return string|nil type
 function ppm.get_type(iface)
-    if _ppm_sys.mounts[iface] then
-        return _ppm_sys.mounts[iface].type
+    if ppm_sys.mounts[iface] then
+        return ppm_sys.mounts[iface].type
     else return nil end
 end
 
 -- get all mounted peripherals by type
+---@nodiscard
 ---@param name string type name
 ---@return table devices device function tables
 function ppm.get_all_devices(name)
     local devices = {}
 
-    for _, data in pairs(_ppm_sys.mounts) do
+    for _, data in pairs(ppm_sys.mounts) do
         if data.type == name then
             table.insert(devices, data.dev)
         end
@@ -366,12 +360,13 @@ function ppm.get_all_devices(name)
 end
 
 -- get a mounted peripheral by type (if multiple, returns the first)
+---@nodiscard
 ---@param name string type name
 ---@return table|nil device function table
 function ppm.get_device(name)
     local device = nil
 
-    for side, data in pairs(_ppm_sys.mounts) do
+    for _, data in pairs(ppm_sys.mounts) do
         if data.type == name then
             device = data.dev
             break
@@ -384,20 +379,21 @@ end
 -- SPECIFIC DEVICE ACCESSORS --
 
 -- get the fission reactor (if multiple, returns the first)
+---@nodiscard
 ---@return table|nil reactor function table
 function ppm.get_fission_reactor()
     return ppm.get_device("fissionReactorLogicAdapter")
 end
 
--- get the wireless modem (if multiple, returns the first)
---
+-- get the wireless modem (if multiple, returns the first)<br>
 -- if this is in a CraftOS emulated environment, wired modems will be used instead
+---@nodiscard
 ---@return table|nil modem function table
 function ppm.get_wireless_modem()
     local w_modem = nil
     local emulated_env = periphemu ~= nil
 
-    for _, device in pairs(_ppm_sys.mounts) do
+    for _, device in pairs(ppm_sys.mounts) do
         if device.type == "modem" and (emulated_env or device.dev.isWireless()) then
             w_modem = device.dev
             break
@@ -408,11 +404,12 @@ function ppm.get_wireless_modem()
 end
 
 -- list all connected monitors
+---@nodiscard
 ---@return table monitors
 function ppm.get_monitor_list()
     local list = {}
 
-    for iface, device in pairs(_ppm_sys.mounts) do
+    for iface, device in pairs(ppm_sys.mounts) do
         if device.type == "monitor" then
             list[iface] = device
         end

scada-common/psil.lua

@@ -5,6 +5,7 @@
 local psil = {}
 
 -- instantiate a new PSI layer
+---@nodiscard
 function psil.create()
     local self = {
         ic = {}
@@ -19,8 +20,7 @@ function psil.create()
     ---@class psil
     local public = {}
 
-    -- subscribe to a data object in the interconnect
-    --
+    -- subscribe to a data object in the interconnect<br>
     -- will call func() right away if a value is already avaliable
     ---@param key string data key
     ---@param func function function to call on change

scada-common/rsio.lua

@@ -89,6 +89,7 @@ rsio.IO = IO_PORT
 -----------------------
 
 -- port to string
+---@nodiscard
 ---@param port IO_PORT
 function rsio.to_string(port)
     local names = {
@@ -194,6 +195,7 @@ local RS_DIO_MAP = {
 }
 
 -- get the mode of a port
+---@nodiscard
 ---@param port IO_PORT
 ---@return IO_MODE
 function rsio.get_io_mode(port)
@@ -239,6 +241,7 @@ end
 local RS_SIDES = rs.getSides()
 
 -- check if a port is valid
+---@nodiscard
 ---@param port IO_PORT
 ---@return boolean valid
 function rsio.is_valid_port(port)
@@ -246,6 +249,7 @@ function rsio.is_valid_port(port)
 end
 
 -- check if a side is valid
+---@nodiscard
 ---@param side string
 ---@return boolean valid
 function rsio.is_valid_side(side)
@@ -258,6 +262,7 @@ function rsio.is_valid_side(side)
 end
 
 -- check if a color is a valid single color
+---@nodiscard
 ---@param color integer
 ---@return boolean valid
 function rsio.is_color(color)
@@ -269,22 +274,25 @@ end
 -----------------
 
 -- get digital I/O level reading from a redstone boolean input value
----@param rs_value boolean
+---@nodiscard
+---@param rs_value boolean raw value from redstone
 ---@return IO_LVL
 function rsio.digital_read(rs_value)
     if rs_value then return IO_LVL.HIGH else return IO_LVL.LOW end
 end
 
 -- get redstone boolean output value corresponding to a digital I/O level
----@param level IO_LVL
+---@nodiscard
+---@param level IO_LVL logic level
 ---@return boolean
 function rsio.digital_write(level)
     return level == IO_LVL.HIGH
 end
 
 -- returns the level corresponding to active
----@param port IO_PORT
----@param active boolean
+---@nodiscard
+---@param port IO_PORT port (to determine active high/low)
+---@param active boolean state to convert to logic level
 ---@return IO_LVL|false
 function rsio.digital_write_active(port, active)
     if (not util.is_int(port)) or (port < IO_PORT.F_ALARM) or (port > IO_PORT.U_EMER_COOL) then
@@ -295,9 +303,10 @@ function rsio.digital_write_active(port, active)
 end
 
 -- returns true if the level corresponds to active
----@param port IO_PORT
----@param level IO_LVL
----@return boolean|nil
+---@nodiscard
+---@param port IO_PORT port (to determine active low/high)
+---@param level IO_LVL logic level
+---@return boolean|nil state true for active, false for inactive, or nil if invalid port or level provided
 function rsio.digital_is_active(port, level)
     if not util.is_int(port) then
         return nil
@@ -313,6 +322,7 @@ end
 ----------------
 
 -- read an analog value scaled from min to max
+---@nodiscard
 ---@param rs_value number redstone reading (0 to 15)
 ---@param min number minimum of range
 ---@param max number maximum of range
@@ -323,6 +333,7 @@ function rsio.analog_read(rs_value, min, max)
 end
 
 -- write an analog value from the provided scale range
+---@nodiscard
 ---@param value number value to write (from min to max range)
 ---@param min number minimum of range
 ---@param max number maximum of range

scada-common/tcallbackdsp.lua

@@ -19,8 +19,6 @@ function tcallbackdsp.dispatch(time, f)
         duration = time,
         expiry = time + util.time_s()
     }
-
-    -- log.debug(util.c("TCD: queued callback for ", f, " [timer: ", timer, "]"))
 end
 
 -- request a function to be called after the specified time, aborting any registered instances of that function reference
@@ -45,8 +43,6 @@ function tcallbackdsp.dispatch_unique(time, f)
         duration = time,
         expiry = time + util.time_s()
     }
-
-    -- log.debug(util.c("TCD: queued callback for ", f, " [timer: ", timer, "]"))
 end
 
 -- abort a requested callback
@@ -72,8 +68,7 @@ function tcallbackdsp.handle(event)
     end
 end
 
--- identify any overdo callbacks
---
+-- identify any overdo callbacks<br>
 -- prints to log debug output
 function tcallbackdsp.diagnostics()
     for timer, entry in pairs(registry) do

scada-common/types.lua

@@ -12,12 +12,14 @@ local types = {}
 ---@field amount integer
 
 -- create a new tank fluid
+---@nodiscard
 ---@param n string name
 ---@param a integer amount
 ---@return radiation_reading
 function types.new_tank_fluid(n, a) return { name = n, amount = a } end
 
 -- create a new empty tank fluid
+---@nodiscard
 ---@return tank_fluid
 function types.new_empty_gas() return { type = "mekanism:empty_gas", amount = 0 } end
 
@@ -26,12 +28,14 @@ function types.new_empty_gas() return { type = "mekanism:empty_gas", amount = 0
 ---@field unit string
 
 -- create a new radiation reading
+---@nodiscard
 ---@param r number radiaiton level
 ---@param u string radiation unit
 ---@return radiation_reading
 function types.new_radiation_reading(r, u) return { radiation = r, unit = u } end
 
 -- create a new zeroed radiation reading
+---@nodiscard
 ---@return radiation_reading
 function types.new_zero_radiation_reading() return { radiation = 0, unit = "nSv" } end
 
@@ -41,6 +45,7 @@ function types.new_zero_radiation_reading() return { radiation = 0, unit = "nSv"
 ---@field z integer
 
 -- create a new coordinate
+---@nodiscard
 ---@param x integer
 ---@param y integer
 ---@param z integer
@@ -48,11 +53,12 @@ function types.new_zero_radiation_reading() return { radiation = 0, unit = "nSv"
 function types.new_coordinate(x, y, z) return { x = x, y = y, z = z } end
 
 -- create a new zero coordinate
+---@nodiscard
 ---@return coordinate
 function types.new_zero_coordinate() return { x = 0, y = 0, z = 0 } end
 
 ---@class rtu_advertisement
----@field type integer
+---@field type RTU_UNIT_TYPES
 ---@field index integer
 ---@field reactor integer
 ---@field rsio table|nil
@@ -62,15 +68,16 @@ function types.new_zero_coordinate() return { x = 0, y = 0, z = 0 } end
 ---@alias color integer
 
 -- ENUMERATION TYPES --
+--#region
 
----@alias TRI_FAIL integer
+---@enum TRI_FAIL
 types.TRI_FAIL = {
     OK = 0,
     PARTIAL = 1,
     FULL = 2
 }
 
----@alias PROCESS integer
+---@enum PROCESS
 types.PROCESS = {
     INACTIVE = 0,
     MAX_BURN = 1,
@@ -93,7 +100,7 @@ types.PROCESS_NAMES = {
     "GEN_RATE_FAULT_IDLE"
 }
 
----@alias WASTE_MODE integer
+---@enum WASTE_MODE
 types.WASTE_MODE = {
     AUTO = 1,
     PLUTONIUM = 2,
@@ -101,7 +108,7 @@ types.WASTE_MODE = {
     ANTI_MATTER = 4
 }
 
----@alias ALARM integer
+---@enum ALARM
 types.ALARM = {
     ContainmentBreach = 1,
     ContainmentRadiation = 2,
@@ -117,7 +124,7 @@ types.ALARM = {
     TurbineTrip = 12
 }
 
-types.alarm_string = {
+types.ALARM_NAMES = {
     "ContainmentBreach",
     "ContainmentRadiation",
     "ReactorLost",
@@ -132,7 +139,7 @@ types.alarm_string = {
     "TurbineTrip"
 }
 
----@alias ALARM_PRIORITY integer
+---@enum ALARM_PRIORITY
 types.ALARM_PRIORITY = {
     CRITICAL = 0,
     EMERGENCY = 1,
@@ -140,30 +147,14 @@ types.ALARM_PRIORITY = {
     TIMELY = 3
 }
 
-types.alarm_prio_string = {
+types.ALARM_PRIORITY_NAMES = {
     "CRITICAL",
     "EMERGENCY",
     "URGENT",
     "TIMELY"
 }
 
--- map alarms to alarm priority
-types.ALARM_PRIO_MAP = {
-    types.ALARM_PRIORITY.CRITICAL,
-    types.ALARM_PRIORITY.CRITICAL,
-    types.ALARM_PRIORITY.URGENT,
-    types.ALARM_PRIORITY.CRITICAL,
-    types.ALARM_PRIORITY.EMERGENCY,
-    types.ALARM_PRIORITY.EMERGENCY,
-    types.ALARM_PRIORITY.TIMELY,
-    types.ALARM_PRIORITY.EMERGENCY,
-    types.ALARM_PRIORITY.TIMELY,
-    types.ALARM_PRIORITY.URGENT,
-    types.ALARM_PRIORITY.TIMELY,
-    types.ALARM_PRIORITY.URGENT
-}
-
----@alias ALARM_STATE integer
+---@enum ALARM_STATE
 types.ALARM_STATE = {
     INACTIVE = 0,
     TRIPPED = 1,
@@ -171,7 +162,10 @@ types.ALARM_STATE = {
     RING_BACK = 3
 }
 
+--#endregion
+
 -- STRING TYPES --
+--#region
 
 ---@alias os_event
 ---| "alarm"
@@ -206,21 +200,7 @@ types.ALARM_STATE = {
 ---| "websocket_failure"
 ---| "websocket_message"
 ---| "websocket_success"
-
----@alias rps_trip_cause
----| "ok"
----| "dmg_crit"
----| "high_temp"
----| "no_coolant"
----| "full_waste"
----| "heated_coolant_backup"
----| "no_fuel"
----| "fault"
----| "timeout"
----| "manual"
----| "automatic"
----| "sys_fail"
----| "force_disabled"
+---| "clock_start"          custom, added for reactor PLC
 
 ---@alias fluid
 ---| "mekanism:empty_gas"
@@ -246,6 +226,21 @@ types.rtu_t = {
     env_detector = "environment_detector"
 }
 
+---@alias rps_trip_cause
+---| "ok"
+---| "dmg_crit"
+---| "high_temp"
+---| "no_coolant"
+---| "full_waste"
+---| "heated_coolant_backup"
+---| "no_fuel"
+---| "fault"
+---| "timeout"
+---| "manual"
+---| "automatic"
+---| "sys_fail"
+---| "force_disabled"
+
 ---@alias rps_status_t rps_trip_cause
 types.rps_status_t = {
     ok = "ok",
@@ -263,18 +258,24 @@ types.rps_status_t = {
     force_disabled = "force_disabled"
 }
 
--- turbine steam dumping modes
----@alias DUMPING_MODE string
+---@alias DUMPING_MODE
+---| "IDLE"
+---| "DUMPING"
+---| "DUMPING_EXCESS"
+
 types.DUMPING_MODE = {
     IDLE = "IDLE",
     DUMPING = "DUMPING",
     DUMPING_EXCESS = "DUMPING_EXCESS"
 }
 
--- MODBUS
+--#endregion
 
--- modbus function codes
----@alias MODBUS_FCODE integer
+-- MODBUS --
+--#region
+
+-- MODBUS function codes
+---@enum MODBUS_FCODE
 types.MODBUS_FCODE = {
     READ_COILS = 0x01,
     READ_DISCRETE_INPUTS = 0x02,
@@ -287,8 +288,8 @@ types.MODBUS_FCODE = {
     ERROR_FLAG = 0x80
 }
 
--- modbus exception codes
----@alias MODBUS_EXCODE integer
+-- MODBUS exception codes
+---@enum MODBUS_EXCODE
 types.MODBUS_EXCODE = {
     ILLEGAL_FUNCTION = 0x01,
     ILLEGAL_DATA_ADDR = 0x02,
@@ -302,4 +303,6 @@ types.MODBUS_EXCODE = {
     GATEWAY_TARGET_TIMEOUT = 0x0B
 }
 
+--#endregion
+
 return types

scada-common/util.lua

@@ -14,6 +14,7 @@ util.TICK_TIME_MS = 50
 --#region
 
 -- trinary operator
+---@nodiscard
 ---@param cond boolean|nil condition
 ---@param a any return if true
 ---@param b any return if false
@@ -57,6 +58,7 @@ end
 --#region
 
 -- get a value as a string
+---@nodiscard
 ---@param val any
 ---@return string
 function util.strval(val)
@@ -69,6 +71,7 @@ function util.strval(val)
 end
 
 -- repeat a string n times
+---@nodiscard
 ---@param str string
 ---@param n integer
 ---@return string
@@ -81,6 +84,7 @@ function util.strrep(str, n)
 end
 
 -- repeat a space n times
+---@nodiscard
 ---@param n integer
 ---@return string
 function util.spaces(n)
@@ -88,6 +92,7 @@ function util.spaces(n)
 end
 
 -- pad text to a minimum width
+---@nodiscard
 ---@param str string text
 ---@param n integer minimum width
 ---@return string
@@ -100,6 +105,7 @@ function util.pad(str, n)
 end
 
 -- wrap a string into a table of lines, supporting single dash splits
+---@nodiscard
 ---@param str string
 ---@param limit integer line limit
 ---@return table lines
@@ -147,13 +153,12 @@ function util.strwrap(str, limit)
 end
 
 -- concatenation with built-in to string
+---@nodiscard
 ---@vararg any
 ---@return string
 function util.concat(...)
     local str = ""
-    for _, v in ipairs(arg) do
-        str = str .. util.strval(v)
-    end
+    for _, v in ipairs(arg) do str = str .. util.strval(v) end
     return str
 end
 
@@ -161,15 +166,16 @@ end
 util.c = util.concat
 
 -- sprintf implementation
+---@nodiscard
 ---@param format string
 ---@vararg any
 function util.sprintf(format, ...)
     return string.format(format, table.unpack(arg))
 end
 
--- format a number string with commas as the thousands separator
---
+-- format a number string with commas as the thousands separator<br>
 -- subtracts from spaces at the start if present for each comma used
+---@nodiscard
 ---@param num string number string
 ---@return string
 function util.comma_format(num)
@@ -196,6 +202,7 @@ end
 --#region
 
 -- is a value an integer
+---@nodiscard
 ---@param x any value
 ---@return boolean is_integer if the number is an integer
 function util.is_int(x)
@@ -203,6 +210,7 @@ function util.is_int(x)
 end
 
 -- get the sign of a number
+---@nodiscard
 ---@param x number value
 ---@return integer sign (-1 for < 0, 1 otherwise)
 function util.sign(x)
@@ -210,12 +218,14 @@ function util.sign(x)
 end
 
 -- round a number to an integer
+---@nodiscard
 ---@return integer rounded
 function util.round(x)
     return math.floor(x + 0.5)
 end
 
 -- get a new moving average object
+---@nodiscard
 ---@param length integer history length
 ---@param default number value to fill history with for first call to compute()
 function util.mov_avg(length, default)
@@ -249,6 +259,7 @@ function util.mov_avg(length, default)
     end
 
     -- compute the moving average
+    ---@nodiscard
     ---@return number average
     function public.compute()
         local sum = 0
@@ -264,6 +275,7 @@ end
 -- TIME --
 
 -- current time
+---@nodiscard
 ---@return integer milliseconds
 function util.time_ms()
 ---@diagnostic disable-next-line: undefined-field
@@ -271,6 +283,7 @@ function util.time_ms()
 end
 
 -- current time
+---@nodiscard
 ---@return number seconds
 function util.time_s()
 ---@diagnostic disable-next-line: undefined-field
@@ -278,10 +291,9 @@ function util.time_s()
 end
 
 -- current time
+---@nodiscard
 ---@return integer milliseconds
-function util.time()
-    return util.time_ms()
-end
+function util.time() return util.time_ms() end
 
 --#endregion
 
@@ -289,6 +301,7 @@ end
 --#region
 
 -- OS pull event raw wrapper with types
+---@nodiscard
 ---@param target_event? string event to wait for
 ---@return os_event event, any param1, any param2, any param3, any param4, any param5
 function util.pull_event(target_event)
@@ -309,6 +322,7 @@ function util.push_event(event, param1, param2, param3, param4, param5)
 end
 
 -- start an OS timer
+---@nodiscard
 ---@param t number timer duration in seconds
 ---@return integer timer ID
 function util.start_timer(t)
@@ -336,14 +350,12 @@ function util.psleep(t)
     pcall(os.sleep, t)
 end
 
--- no-op to provide a brief pause (1 tick) to yield
----
+-- no-op to provide a brief pause (1 tick) to yield<br>
 --- EVENT_CONSUMER: this function consumes events
-function util.nop()
-    util.psleep(0.05)
-end
+function util.nop() util.psleep(0.05) end
 
 -- attempt to maintain a minimum loop timing (duration of execution)
+---@nodiscard
 ---@param target_timing integer minimum amount of milliseconds to wait for
 ---@param last_update integer millisecond time of last update
 ---@return integer time_now
@@ -351,9 +363,7 @@ end
 function util.adaptive_delay(target_timing, last_update)
     local sleep_for = target_timing - (util.time() - last_update)
     -- only if >50ms since worker loops already yield 0.05s
-    if sleep_for >= 50 then
-        util.psleep(sleep_for / 1000.0)
-    end
+    if sleep_for >= 50 then util.psleep(sleep_for / 1000.0) end
     return util.time()
 end
 
@@ -362,8 +372,7 @@ end
 -- TABLE UTILITIES --
 --#region
 
--- delete elements from a table if the passed function returns false when passed a table element
---
+-- delete elements from a table if the passed function returns false when passed a table element<br>
 -- put briefly: deletes elements that return false, keeps elements that return true
 ---@param t table table to remove elements from
 ---@param f function should return false to delete an element when passed the element: f(elem) = true|false
@@ -388,6 +397,7 @@ function util.filter_table(t, f, on_delete)
 end
 
 -- check if a table contains the provided element
+---@nodiscard
 ---@param t table table to check
 ---@param element any element to check for
 function util.table_contains(t, element)
@@ -404,11 +414,13 @@ end
 --#region
 
 -- convert Joules to FE
+---@nodiscard
 ---@param J number Joules
 ---@return number FE Forge Energy
 function util.joules_to_fe(J) return (J * 0.4) end
 
 -- convert FE to Joules
+---@nodiscard
 ---@param FE number Forge Energy
 ---@return number J Joules
 function util.fe_to_joules(FE) return (FE * 2.5) end
@@ -422,6 +434,7 @@ local function EFE(fe) return fe / 1000000000000000000.0 end        -- if you ac
 local function ZFE(fe) return fe / 1000000000000000000000.0 end -- please stop
 
 -- format a power value into XXX.XX UNIT format (FE, kFE, MFE, GFE, TFE, PFE, EFE, ZFE)
+---@nodiscard
 ---@param fe number forge energy value
 ---@param combine_label? boolean if a label should be included in the string itself
 ---@param format? string format override
@@ -430,9 +443,7 @@ function util.power_format(fe, combine_label, format)
     local unit
     local value
 
-    if type(format) ~= "string" then
-        format = "%.2f"
-    end
+    if type(format) ~= "string" then format = "%.2f" end
 
     if fe < 1000.0 then
         unit = "FE"
@@ -474,10 +485,10 @@ end
 
 -- WATCHDOG --
 
--- ComputerCraft OS Timer based Watchdog
+-- OS timer based watchdog<br>
+-- triggers a timer event if not fed within 'timeout' seconds
+---@nodiscard
 ---@param timeout number timeout duration
----
---- triggers a timer event if not fed within 'timeout' seconds
 function util.new_watchdog(timeout)
     local self = {
         timeout = timeout,
@@ -487,10 +498,10 @@ function util.new_watchdog(timeout)
     ---@class watchdog
     local public = {}
 
+    -- check if a timer is this watchdog
+    ---@nodiscard
     ---@param timer number timer event timer ID
-    function public.is_timer(timer)
-        return self.wd_timer == timer
-    end
+    function public.is_timer(timer) return self.wd_timer == timer end
 
     -- satiate the beast
     function public.feed()
@@ -512,10 +523,10 @@ end
 
 -- LOOP CLOCK --
 
--- ComputerCraft OS Timer based Loop Clock
+-- OS timer based loop clock<br>
+-- fires a timer event at the specified period, does not start at construct time
+---@nodiscard
 ---@param period number clock period
----
---- fires a timer event at the specified period, does not start at construct time
 function util.new_clock(period)
     local self = {
         period = period,
@@ -525,24 +536,22 @@ function util.new_clock(period)
     ---@class clock
     local public = {}
 
+    -- check if a timer is this clock
+    ---@nodiscard
     ---@param timer number timer event timer ID
-    function public.is_clock(timer)
-        return self.timer == timer
-    end
+    function public.is_clock(timer) return self.timer == timer end
 
     -- start the clock
-    function public.start()
-        self.timer = util.start_timer(self.period)
-    end
+    function public.start() self.timer = util.start_timer(self.period) end
 
     return public
 end
 
 -- FIELD VALIDATOR --
 
--- create a new type validator
---
+-- create a new type validator<br>
 -- can execute sequential checks and check valid() to see if it is still valid
+---@nodiscard
 function util.new_validator()
     local valid = true
 
@@ -565,6 +574,8 @@ function util.new_validator()
 
     function public.assert_port(port) valid = valid and type(port) == "number" and port >= 0 and port <= 65535 end
 
+    -- check if all assertions passed successfully
+    ---@nodiscard
     function public.valid() return valid end
 
     return public

supervisor/unitlogic.lua

@@ -367,8 +367,8 @@ local function _update_alarm_state(self, tripped, alarm)
             else
                 alarm.state = AISTATE.TRIPPED
                 self.db.alarm_states[alarm.id] = ALARM_STATE.TRIPPED
-                log.info(util.c("UNIT ", self.r_id, " ALARM ", alarm.id, " (", types.alarm_string[alarm.id], "): TRIPPED [PRIORITY ",
-                    types.alarm_prio_string[alarm.tier + 1],"]"))
+                log.info(util.c("UNIT ", self.r_id, " ALARM ", alarm.id, " (", types.ALARM_NAMES[alarm.id], "): TRIPPED [PRIORITY ",
+                    types.ALARM_PRIORITY_NAMES[alarm.tier + 1],"]"))
             end
         else
             alarm.trip_time = util.time_ms()
@@ -381,8 +381,8 @@ local function _update_alarm_state(self, tripped, alarm)
             if elapsed > (alarm.hold_time * 1000) then
                 alarm.state = AISTATE.TRIPPED
                 self.db.alarm_states[alarm.id] = ALARM_STATE.TRIPPED
-                log.info(util.c("UNIT ", self.r_id, " ALARM ", alarm.id, " (", types.alarm_string[alarm.id], "): TRIPPED [PRIORITY ",
-                    types.alarm_prio_string[alarm.tier + 1],"]"))
+                log.info(util.c("UNIT ", self.r_id, " ALARM ", alarm.id, " (", types.ALARM_NAMES[alarm.id], "): TRIPPED [PRIORITY ",
+                    types.ALARM_PRIORITY_NAMES[alarm.tier + 1],"]"))
             end
         elseif int_state == AISTATE.RING_BACK_TRIPPING then
             alarm.trip_time = 0
@@ -432,7 +432,7 @@ local function _update_alarm_state(self, tripped, alarm)
     -- check for state change
     if alarm.state ~= int_state then
         local change_str = util.c(aistate_string[int_state + 1], " -> ", aistate_string[alarm.state + 1])
-        log.debug(util.c("UNIT ", self.r_id, " ALARM ", alarm.id, " (", types.alarm_string[alarm.id], "): ", change_str))
+        log.debug(util.c("UNIT ", self.r_id, " ALARM ", alarm.id, " (", types.ALARM_NAMES[alarm.id], "): ", change_str))
     end
 end
 
@@ -530,8 +530,8 @@ function logic.update_auto_safety(public, self)
         for _, alarm in pairs(self.alarms) do
             if alarm.tier <= PRIO.URGENT and (alarm.state == AISTATE.TRIPPED or alarm.state == AISTATE.ACKED) then
                 if not self.auto_was_alarmed then
-                    log.info(util.c("UNIT ", self.r_id, " AUTO SCRAM due to ALARM ", alarm.id, " (", types.alarm_string[alarm.id], ") [PRIORITY ",
-                        types.alarm_prio_string[alarm.tier + 1],"]"))
+                    log.info(util.c("UNIT ", self.r_id, " AUTO SCRAM due to ALARM ", alarm.id, " (", types.ALARM_NAMES[alarm.id], ") [PRIORITY ",
+                        types.ALARM_PRIORITY_NAMES[alarm.tier + 1],"]"))
                 end
 
                 alarmed = true