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%% -*- erlang-indent-level: 4;indent-tabs-mode: nil -*-
%% ex: ts=4 sw=4 et
-module(rebar_resource).
-export([]).
-export_type([resource/0
,type/0
,location/0
,ref/0]).
-type resource() :: {type(), location(), ref()}.
-type type() :: atom().
-type location() :: string().
-type ref() :: any().
-ifdef(no_callback_support).
%% In the case where R14 or lower is being used to compile the system
%% we need to export a behaviour info
-export([behaviour_info/1]).
-spec behaviour_info(atom()) -> [{atom(), arity()}] | undefined.
behaviour_info(callbacks) ->
[{lock, 2},
{download, 2},
{needs_update,2},
{make_vsn, 1}];
behaviour_info(_) ->
undefined.
-else.
-callback lock(file:filename_all(), tuple()) ->
rebar_resource:resource().
-callback download(file:filename_all(), tuple()) ->
{tarball, file:filename_all()} | {ok, any()} | {error, any()}.
-callback needs_update(file:filename_all(), tuple()) ->
boolean().
-callback make_vsn(file:filename_all()) ->
{plain, string()} | {error, string()}.
-endif.
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