working on module refactoring

This commit is contained in:
Manuel Simon Hirsig
2016-10-08 19:11:23 +02:00
parent ab475bb503
commit 86c107efba
5 changed files with 58 additions and 60 deletions
+37 -47
View File
@@ -1,4 +1,4 @@
if getmetatable(getfenv(0)) == false then return end
if module then return end
local strfind, type, setmetatable, setfenv, _G = strfind, type, setmetatable, setfenv, getfenv(0)
local PRIVATE, PUBLIC, FIELD, ACCESSOR, MUTATOR = 0, 1, 2, 4, 6
@@ -11,14 +11,11 @@ local function error(msg, ...) return _G.error(format(msg or '', unpack(arg)) ..
local nop, id = function() end, function(v) return v end
local interface_lt = function() return true end
local INTERFACE = setmetatable({}, { __lt=interface_lt })
local function proxy_mt(fields, mutators, lt)
return { __metatable=false, __index=fields, __newindex=function(_, k, v) return mutators[k](v) end, __lt=lt }
local function proxy_mt(fields, mutators)
return { __metatable=false, __index=fields, __newindex=function(_, k, v) return mutators[k](v) end }
end
local _module, _access, _name = {}, {}, {}
local _interface, _module, _access, _name = {}, {}, {}, {}
local definition_helper_mt = { __metatable=false }
function definition_helper_mt:__index(k)
@@ -31,14 +28,15 @@ function definition_helper_mt:__newindex(k, v)
if name then mode = META[k] or error('Invalid modifier "%s"', k) else name, mode = k, FIELD end
if type(name) ~= 'string' or not strfind(name, '^[_%a][_%w]*') then error('Invalid identifier "%s".', name) end
module.defined[name .. OPERATION[mode]] = module.defined[name .. OPERATION[mode]] and error('Duplicate identifier "%s".', name) or true
module[mode][name], module[_access[self]+mode][name] = v, v
module[mode][name], module[_access[self] + mode][name] = v, v
_access[self], _name[self] = nil, nil
end
local function include(self, interface)
local module = (interface < INTERFACE or error'Include error.') and _module[interface]
local function import(self, path)
local _, _, module_name, name = strfind(path, '([^.]*)%.?(.*)')
local module = _module[module_name] or error('No module "%s".', module_name)
for _, mode in MODES do
for k, v in module[PUBLIC+mode] do
for k, v in module[PUBLIC + mode] do
if not self.defined[k .. OPERATION[mode]] then
self.defined[k .. OPERATION[mode]], self[mode][k] = true, v
end
@@ -48,39 +46,31 @@ end
local nop_default_mt = { __index=function() return nop end }
local env = setmetatable({}, {
__metatable = false,
__newindex = function(_, k)
if _G[k] then _G.error(nil) end
local module, environment, interface, definition_helper, modifiers, accessors, mutators, fields, public_accessors, public_mutators, public_fields
environment, interface, definition_helper = {}, {}, setmetatable({}, definition_helper_mt)
accessors = { private=function() _access[definition_helper] = PRIVATE; return definition_helper end, public=function() _access[definition_helper] = PUBLIC; return definition_helper end }
mutators = setmetatable({ _=nop }, { __index=function(_, k) return function(v) _G[k] = v end end })
fields = setmetatable(
{ _M=environment, _G=_G, include=function(interface) include(module, interface) end, error=error, nop=nop, id=id },
{ __index=function(_, k) local accessor = accessors[k]; if accessor then return accessor() else return _G[k] end end }
)
public_accessors = setmetatable({}, nop_default_mt)
public_mutators = setmetatable({}, nop_default_mt)
public_fields = setmetatable({}, { __index=function(_, k) return public_accessors[k]() end })
setmetatable(environment, proxy_mt(fields, mutators))
setmetatable(interface, proxy_mt(public_fields, public_mutators, interface_lt))
module = {
defined = { _M=true, _G=true, include=true, error=true, nop=true, id=true, public=true, private=true, ['_=']=true },
[ACCESSOR] = accessors,
[MUTATOR] = mutators,
[FIELD] = fields,
[PUBLIC+ACCESSOR] = public_accessors,
[PUBLIC+MUTATOR] = public_mutators,
[PUBLIC+FIELD] = public_fields,
}
_module[definition_helper], _module[interface] = module, module
_G[k] = interface
setfenv(2, environment)
end,
})
setmetatable(_G, {
__metatable = false,
__index = function(_, k) if k == 'module' then setfenv(2, env) end end,
})
function module(name)
if _interface[name] then _G.error(nil) end
local module, environment, interface, definition_helper, modifiers, accessors, mutators, fields, public_accessors, public_mutators, public_fields
environment, interface, definition_helper = {}, {}, setmetatable({}, definition_helper_mt)
accessors = { private=function() _access[definition_helper] = PRIVATE; return definition_helper end, public=function() _access[definition_helper] = PUBLIC; return definition_helper end }
mutators = setmetatable({ _=nop }, { __index=function(_, k) return function(v) _G[k] = v end end })
fields = setmetatable(
{ _M=environment, _G=_G, import=function(interface) import(module, interface) end, error=error, nop=nop, id=id },
{ __index=function(_, k) local accessor = accessors[k]; if accessor then return accessor() else return _G[k] end end }
)
public_accessors = setmetatable({}, nop_default_mt)
public_mutators = setmetatable({}, nop_default_mt)
public_fields = setmetatable({}, { __index=function(_, k) return public_accessors[k]() end })
setmetatable(environment, proxy_mt(fields, mutators))
setmetatable(interface, proxy_mt(public_fields, public_mutators))
module = {
defined = { _M=true, _G=true, import=true, error=true, nop=true, id=true, public=true, private=true, ['_=']=true },
[ACCESSOR] = accessors,
[MUTATOR] = mutators,
[FIELD] = fields,
[PUBLIC + ACCESSOR] = public_accessors,
[PUBLIC + MUTATOR] = public_mutators,
[PUBLIC + FIELD] = public_fields,
}
_module[name], _module[definition_helper] = module, module
_interface[name] = interface
setfenv(2, environment)
end