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-module(edit_mod).
-export([init/0, require/1, load/1]).
init() ->
ets:new(?MODULE, [set, named_table, public]),
ok.
require(Mod) ->
case ets:lookup(?MODULE, Mod) of
[] -> % not initialised
case load(Mod) of
ok ->
ok;
{error, Reason} ->
{error, Reason}
end;
[_] -> % already initialised
ok
end.
load(Mod) ->
case catch Mod:mod_init() of
ok ->
ets:insert(?MODULE, {Mod}),
ok;
{'EXIT', {undef, _}} ->
{error, {missing, Mod, mod_init, 0}};
{error, Reason} ->
{error, Reason};
Unexpected ->
{error, {unexpected, Unexpected}}
end.
|
