Dusk/aux-addon-ClassicAPI
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big refactoring

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This commit is contained in:
Manuel Simon Hirsig
2016-08-18 16:31:39 +02:00
parent 63c317a3ff
commit 54c45f8fdb
1 changed files with 39 additions and 28 deletions
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module.lua
+39 -28
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@@ -1,11 +1,11 @@
local DECLARED, MUTABLE, PUBLIC = 1, 2, 4
local DECLARED_KEY, MUTABLE_KEY, PUBLIC_KEY = 'declared', 'mutable', 'public'
local MODIFIER_VALUE = {[DECLARED_KEY]=DECLARED, [MUTABLE_KEY]=MUTABLE, [PUBLIC_KEY]=PUBLIC}
local band, bor, bnot = bit.band, bit.bor, bit.bnot
local _G = getfenv(0)
local _state, _data, _metadata = {}, {}, setmetatable({}, {__index=function() return 0 end})
local FIELD, ACCESSOR, MUTABLE, PUBLIC = 1, 2, 4, 8
local ACCESSOR_KEY, MUTABLE_KEY, PUBLIC_KEY = 'accessor', 'mutable', 'public'
local MODIFIER = {[ACCESSOR_KEY]=ACCESSOR, [MUTABLE_KEY]=MUTABLE, [PUBLIC_KEY]=PUBLIC}
local _state, _data, _metadata = {}, {}, {}
--local function_mt = {
-- __call = function(self, ...)
@@ -15,63 +15,74 @@ local _state, _data, _metadata = {}, {}, setmetatable({}, {__index=function() r
-- getfenv(f).__ = temp
-- end,
--}
--local method_mt = {
-- __call = function(self, ...)
-- local f = self[1]
-- local temp = getfenv(f)
-- setfenv(f, state[self])
-- f(...)
-- setfenv(f, temp)
-- end,
--}
local metadata_mt = {__index=function() return 0 end}
local environment_mt = {
__metatable = false,
__index = function(self, key)
if _metadata[self][key] == 0 then return _G[key] or error('No key "'..key..'".', 2) end
return _data[self][key]
local value, properties = _data[self][key], _metadata[self][key]
if band(FIELD, properties) ~= 0 then
return value
elseif band(ACCESSOR, properties) ~= 0 then
return value(key)
else
return _G[key] or error('No key "'..key..'".', 2)
end
end,
__newindex = function(self, key, value)
local m = _metadata[self][key]
if band(bor(DECLARED, MUTABLE), m) == DECLARED then error('"'..key..'" is immutable.', 2) end
local properties = _metadata[self][key]
if properties == 0 then
_metadata[self][key] = FIELD
elseif band(MUTABLE, properties) == 0 then
error('"'..key..'" is immutable.', 2)
end
_data[self][key] = value
_metadata[self][key] = bor(1, m)
end,
}
local interface_mt = {
__metatable = false,
__index = function(self, key)
if band(PUBLIC_V, _metadata[self][key]) == 0 then error('No key "'..key..'".', 2) end
return _data[self][key]
local value, properties = _data[self][key], _metadata[self][key]
if band(FIELD, properties) ~= 0 then
return value
elseif band(ACCESSOR, properties) ~= 0 then
return value(key)
else
error('No key "'..key..'".', 2)
end
end,
__newindex = function() error('Unsupported operation.', 2) end,
}
local modifier_mt = {
__metatable = false,
__call = function(self, key)
_state[self] = MODIFIER_VALUE[key]
_state[self] = bor(_state[self], MODIFIER[key])
return self
end,
__index = function(self, key)
local value = MODIFIER_VALUE[key]
local value = MODIFIER[key]
if not value then error('Unsupported operation.', 2) end
_state[self] = bor(_state[self], value)
return self
end,
__newindex = function(self, key, value)
if _metadata[self][key] then error('Duplicate key "'..key..'".', 2) end
if _metadata[self][key] ~= 0 then error('Duplicate key "'..key..'".', 2) end
_data[self][key] = value
_metadata[self][key] = bor(_state[self], DECLARED)
_metadata[self][key] = _state[self]
_state[self] = 0
end,
}
function aux_module()
local modifier, environment, interface = setmetatable({}, modifier_mt), setmetatable({}, environment_mt), setmetatable({}, interface_mt)
local data, metadata = {mutable=modifier, public=modifier}, {mutable=1, public=1}
local data = {[ACCESSOR_KEY]=modifier, [MUTABLE_KEY]=modifier, [PUBLIC_KEY]=modifier}
local metadata = setmetatable({[ACCESSOR_KEY]=ACCESSOR, [MUTABLE_KEY]=ACCESSOR, [PUBLIC_KEY]=ACCESSOR}, metadata_mt)
_data[modifier], _data[environment], _data[interface] = data, data, data
_metadata[modifier], _metadata[environment], _metadata[interface] = metadata, metadata, metadata
_state[modifier] = 1
_state[modifier] = 0
environment.mutable.__()
environment.mutable.__ = nil
environment.m = environment -- TODO for compatibility, remove later
environment.private = environment -- TODO for compatibility, remove later
setfenv(2, environment)
return interface