Manuel Simon Hirsig
94 lines
4.3 KiB
Lua
94 lines
4.3 KiB
Lua
local rawget, setmetatable, mask, add, g = rawget, setmetatable, bit.band, bit.bor, getfenv(0)
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local DECLARED, ACCESSOR, MUTABLE, PUBLIC = 1, 2, 4, 8
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local IMPORTER_KEY, ACCESSOR_KEY, MUTABLE_KEY, PUBLIC_KEY = 'import', 'accessor', 'mutable', 'public'
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local PROPERTY = {[ACCESSOR_KEY]=ACCESSOR, [MUTABLE_KEY]=MUTABLE, [PUBLIC_KEY]=PUBLIC}
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local _modules, _data, _metadata, _modifiers, _modifier_properties, _imports = {}, {}, {}, {}, {}, {}
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local metadata_mt, modifier_mt, env_mt, interface_mt, importer_mt
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local modifier_accessor, accessor_modifier_accessor, mutable_modifier_accessor, public_modifier_accessor
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local error, locked
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function error(message, ...) g.error(format(message, unpack(arg))..'\n'..debugstack(3, 5, 0), 3) end
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metadata_mt = {__index=function() return 0 end }
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function importer_mt.__call(self, ...)
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local imports = _imports[self]
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for i = 1, arg.n do imports[arg[i]] = true end
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end
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function modifier_accessor(property)
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return function(modifier) return function() _modifier_properties[modifier] = DECLARED+property return modifier end end
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end
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accessor_modifier_accessor, mutable_modifier_accessor, public_modifier_accessor = modifier_accessor(ACCESSOR), modifier_accessor(MUTABLE), modifier_accessor(PUBLIC)
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modifier_mt = {__metatable=false}
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function modifier_mt.__index(self, key)
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local property = PROPERTY[key]
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if not property then error('Unknown modifier "%s".', key) end
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_modifier_properties[self] = add(property, _modifier_properties[self])
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return self
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end
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function modifier_mt.__newindex(self, key, value)
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if rawget(_metadata[self], key) then error('Field "%s" already exists.', key) end
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_metadata[self][key], _data[self][key] = _modifier_properties[self], value
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end
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env_mt = {__metatable=false}
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function env_mt.__index(self, key)
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local value, properties = _data[self][key], _metadata[self][key]
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if mask(DECLARED + ACCESSOR, properties) == DECLARED then
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return value
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elseif mask(ACCESSOR, properties) == ACCESSOR then
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return value(key)
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else
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return g[key] or error('No field "%s".', key)
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end
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end
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function env_mt.__newindex(self, key, value)
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if not rawget(_metadata[self], key) then
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_metadata[self][key] = DECLARED
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elseif mask(MUTABLE, _metadata[self][key]) == 0 then
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error('Field "%s" is immutable.', key)
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end
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_data[self][key] = value
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end
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interface_mt = {__metatable=false}
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function interface_mt.__index(self, key)
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local value, properties = _data[self][key], _metadata[self][key]
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if mask(ACCESSOR + PUBLIC, properties) == PUBLIC then
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return value
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elseif mask(PUBLIC, properties) ~= 0 or error('No field "%s".', key) then
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return value(key)
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end
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end
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function interface_mt.__newindex(self, key, value) self[key](value) end
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importer_mt = {__metatable=false}
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function g.aux_module(name)
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if not _modules[name] then
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local metadata, data, imports, importer, modifier, env, interface
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imports, importer, modifier, env, interface = {}, setmetatable({}, importer_mt), setmetatable({}, modifier_mt), setmetatable({}, env_mt), setmetatable({}, interface_mt)
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metadata = setmetatable({g=DECLARED, m=DECLARED, [IMPORTER_KEY]=DECLARED, [ACCESSOR_KEY]=ACCESSOR, [MUTABLE_KEY]=ACCESSOR, [PUBLIC_KEY]=ACCESSOR}, metadata_mt)
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data = {g=g, m=env, [IMPORTER_KEY]=importer, [ACCESSOR_KEY]=accessor_modifier_accessor(modifier), [MUTABLE_KEY]=mutable_modifier_accessor(modifier), [PUBLIC_KEY]=public_modifier_accessor(modifier)}
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_metadata[name], _metadata[modifier], _metadata[env], _metadata[interface] = metadata, metadata, metadata, metadata
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_data[name], _data[modifier], _data[env], _data[interface] = data, data, data, data
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_imports[name], _imports[importer] = imports, imports
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_modifiers[name] = modifier
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_modules[name] = {env, interface}
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end
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return _modules[name]
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end
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local frame = CreateFrame 'Frame'
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frame:RegisterEvent 'PLAYER_LOGIN'
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frame:SetScript('OnEvent', function()
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locked = true
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local count = 0
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local t0 = GetTime()
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for name in _modules do
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local modifier = _modifiers[name]
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for import_name in _imports[name] do
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if not _modules[import_name] then error('Invalid import %s in %s.', import_name, name) end
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local data = _data[import_name]
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for key, properties in _metadata[import_name] do
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if mask(PUBLIC, properties) ~= 0 then
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_modifier_properties[modifier] = properties
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modifier[key] = data[key]
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end
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end
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end
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end
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aux.log('imported: '..count..' in '..(GetTime()-t0))
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end) |