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-rw-r--r--src/rcl_provider.erl16
1 files changed, 12 insertions, 4 deletions
diff --git a/src/rcl_provider.erl b/src/rcl_provider.erl
index 5c73075..5aa10bd 100644
--- a/src/rcl_provider.erl
+++ b/src/rcl_provider.erl
@@ -8,7 +8,7 @@
-module(rcl_provider).
%% API
--export([new/2, do/2, format/1]).
+-export([new/2, do/2, format_error/2, format/1]).
-export_type([t/0]).
@@ -20,7 +20,7 @@
-callback init(rcl_state:t()) -> {ok, rcl_state:t()} | {error, Reason::term()}.
-callback do(rcl_state:t()) -> {error, Reason::term()} | {ok, rcl_state:t()}.
--callback format({error, Reason::term()}) -> iolist().
+-callback format_error({error, Reason::term()}) -> iolist().
%%%===================================================================
%%% API
@@ -31,7 +31,8 @@
%%
%% @param ModuleName The module name.
%% @param State0 The current state of the system
--spec new(module(), rcl_state:t()) -> {t(), {ok, rcl_state:t()} | {error, Reason::term()}}.
+-spec new(module(), rcl_state:t()) ->
+ {t(), {ok, rcl_state:t()} | {error, Reason::term()}}.
new(ModuleName, State0) when is_atom(ModuleName) ->
State1 = ModuleName:init(State0),
case code:which(ModuleName) of
@@ -46,10 +47,17 @@ new(ModuleName, State0) when is_atom(ModuleName) ->
%%
%% @param Provider the provider object
%% @param State the current state of the system
--spec do(Provider::t(), rcl_state:t()) -> rcl_state:t().
+-spec do(Provider::t(), rcl_state:t()) ->
+ {error, Reason::term()} | {ok, rcl_state:t()}.
do({?MODULE, Mod}, State) ->
Mod:do(State).
+%% @doc format an error produced from a provider.
+-spec format_error(t(), {error, Reason::term()}) -> iolist().
+format_error({?MODULE, Mod}, Error) ->
+ Mod:format_error(Error).
+
+
%% @doc print the provider module name
%%
%% @param T - The provider