1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
|
%%%----------------------------------------------------------------------
%%% File : edit_mod.erl
%%% Author : Luke Gorrie <luke@bluetail.com>
%%% Purpose : Module loader
%%% Created : 28 Apr 2001 by Luke Gorrie <luke@bluetail.com>
%%%----------------------------------------------------------------------
-module(edit_mod).
-author('luke@bluetail.com').
-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.
|
