Dusk/aux-addon-ClassicAPI
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implemented import system for modules

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This commit is contained in:
Manuel Simon Hirsig
2016-08-19 17:09:44 +02:00
parent 37e789184b
commit e334a444df
4 changed files with 42 additions and 24 deletions
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module.lua
+29 -12
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@@ -1,13 +1,12 @@
local setfenv, rawget, rawset, setmetatable, mask, g = setfenv, rawget, rawset, setmetatable, bit.band, getfenv(0)
local tinsert, setfenv, rawget, rawset, setmetatable, mask, g = tinsert, setfenv, rawget, rawset, setmetatable, bit.band, getfenv(0)
local DECLARED, ACCESSOR, MUTABLE, PUBLIC = 1, 2, 4, 8
local ACCESSOR_KEY, MUTABLE_KEY, PUBLIC_KEY = 'accessor', 'mutable', 'public'
local PROPERTY = {[ACCESSOR_KEY]=ACCESSOR, [MUTABLE_KEY]=MUTABLE, [PUBLIC_KEY]=PUBLIC}
local _data, _metadata, _modifier_properties = {}, {}, {}
local _data, _metadata, _modifier_properties, _imports, _interfaces = {}, {}, {}, {}, {}
local metadata_mt = {
__index=function() return 0 end,
__newindex=function(self, key, value)
if rawget(self, key) then error('Duplicate key "'..key..'".', 2) end
if rawget(self, key) then error('Duplicate key "'..key..'".', 3) end
rawset(self, key, value)
end,
}
@@ -20,6 +19,12 @@ local env_mt = {
elseif mask(ACCESSOR, properties) == ACCESSOR then
return value(key)
else
for _, name in _imports[self] do
local interface = _interfaces[name]
if interface and mask(PUBLIC, _metadata[interface][key]) ~= 0 then
return interface[key]
end
end
return g[key] or error('No key "'..key..'".', 2)
end
end,
@@ -39,7 +44,7 @@ local interface_mt = {
local value, properties = _data[self][key], _metadata[self][key]
if mask(ACCESSOR+PUBLIC, properties) == PUBLIC then
return value
elseif mask(PUBLIC, properties) == PUBLIC then
elseif mask(PUBLIC, properties) ~= 0 then
return value(key)
else
error('No key "'..key..'".', 2)
@@ -61,17 +66,29 @@ local modifier_mt = {
_metadata[self][key] = _modifier_properties[self]
end,
}
function g.aux_module()
local data, metadata, modifier, env, interface
modifier = setmetatable({}, modifier_mt) env = setmetatable({}, env_mt) interface = setmetatable({}, interface_mt)
local function modifier_accessor(key) _modifier_properties[modifier] = DECLARED+PROPERTY[key] return modifier end
data = {g=g, m=env, [ACCESSOR_KEY]=modifier_accessor, [MUTABLE_KEY]=modifier_accessor, [PUBLIC_KEY]=modifier_accessor}
metadata = setmetatable({g=DECLARED, m=DECLARED, [ACCESSOR_KEY]=ACCESSOR, [MUTABLE_KEY]=ACCESSOR, [PUBLIC_KEY]=ACCESSOR}, metadata_mt)
local importer_mt = {
__call = function(self, ...)
for i=1,arg.n do
tinsert(_imports[self], arg[i])
end
end,
}
function g.aux_module(name)
if _interfaces[name] then error('Duplicate module "'..name..'".', 2) end
local data, metadata, imports, importer, modifier, env, interface, modifier_accessor
modifier, importer, env, interface = setmetatable({}, modifier_mt), setmetatable({}, importer_mt), setmetatable({}, env_mt), setmetatable({}, interface_mt)
function modifier_accessor(key) _modifier_properties[modifier] = DECLARED+PROPERTY[key] return modifier end
data = {g=g, m=env, import=importer, [ACCESSOR_KEY]=modifier_accessor, [MUTABLE_KEY]=modifier_accessor, [PUBLIC_KEY]=modifier_accessor}
metadata = setmetatable({g=DECLARED, m=DECLARED, import=DECLARED, [ACCESSOR_KEY]=ACCESSOR, [MUTABLE_KEY]=ACCESSOR, [PUBLIC_KEY]=ACCESSOR}, metadata_mt)
imports = {}
_interfaces[name] = interface
_data[modifier], _data[env], _data[interface] = data, data, data
_metadata[modifier], _metadata[env], _metadata[interface] = metadata, metadata, metadata
_imports[importer], _imports[env] = imports, imports
env.mutable.__ = nil
env.mutable.__ = nil -- TODO
setfenv(2, env)
return interface