diff options
Diffstat (limited to 'indra/newview/scripts/lua/require/util.lua')
| -rw-r--r-- | indra/newview/scripts/lua/require/util.lua | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/indra/newview/scripts/lua/require/util.lua b/indra/newview/scripts/lua/require/util.lua index a000359226..40737a159a 100644 --- a/indra/newview/scripts/lua/require/util.lua +++ b/indra/newview/scripts/lua/require/util.lua @@ -92,4 +92,23 @@ function util.setmetamethods(specs) return t end +-- On the passed module (i.e. table), set an __index metamethod such that +-- referencing module.submodule lazily requires(path/submodule). +-- The loaded submodule is cached in the module table so it need not be passed +-- to require() again. +-- 'path', like any require() string, can be relative to LuaRequirePath. +-- Returns the enriched module, permitting e.g. +-- mymod = util.submoduledir({}, 'mymod') +function util.submoduledir(module, path) + return util.setmetamethods{ + module, + __index=function(t, key) + local mod = require(`{path}/{key}`) + -- cache the submodule + t[key] = mod + return mod + end + } +end + return util |