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Changes to environment handling, get_current_modname convenience

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This commit is contained in:
Lars Mueller 2020-07-08 20:08:31 +02:00
parent 68b5c4013f
commit c7e165f170
1 changed files with 38 additions and 19 deletions
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57
mod.lua
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@ -1,39 +1,58 @@
-- get modpath wrapper
function get_resource(modname, resource)
if not resource then
resource = modname
modname = minetest.get_current_modname()
end
return minetest.get_modpath(modname) .. "/" .. resource
end
-- get resource + dofile
function include(modname, file)
if not file then
file = modname
modname = minetest.get_current_modname()
end
dofile(get_resource(modname, file))
end
-- loadfile with table env
function include_namespace(classname, filename, parent_namespace)
function include_env(file_or_string, env, is_string)
setfenv(assert((is_string and loadstring or loadfile)(file_or_string)), env)()
end
function create_namespace(namespace_name, parent_namespace)
namespace_name = namespace_name or minetest.get_current_modname()
parent_namespace = parent_namespace or _G
parent_namespace[classname] = setmetatable(parent_namespace[classname] or {}, {__index = parent_namespace, __call = parent_namespace})
local class = assert(loadfile(filename))
setfenv(class, parent_namespace[classname])
class()
return parent_namespace[classname]
local namespace = setmetatable({}, {__index = parent_namespace})
parent_namespace[namespace_name] = namespace
-- prevent MT's warning
if parent_namespace == _G then
rawset(parent_namespace, namespace_name, namespace)
end
return namespace
end
-- formerly extend_mod
function extend(modname, file)
if not file then
file = modname
modname = minetest.get_current_modname()
end
include_env(get_resource(modname, file .. ".lua"), _G[modname])
end
-- runs main.lua in table env
-- formerly include_mod
function init(modname)
include_namespace(modname, get_resource(modname, "main.lua"))
modname = modname or minetest.get_current_modname()
create_namespace(modname)
extend(modname, "main")
end
-- formerly extend_mod
function extend(modname, filename)
include_namespace(modname, get_resource(modname, filename .. ".lua"))
end
-- formerly extend_mod_string
function extend_string(modname, string)
_G[modname] = setmetatable(_G[modname] or {}, {__index = _G, __call = _G})
local string = assert(loadstring(string))
setfenv(string, _G[modname])
string()
return _G[modname]
if not string then
string = modname
modname = minetest.get_current_modname()
end
include_env(string, _G[modname], true)
end