From 8a50331898e3c5def85a3c7158c7cefe22a36a5f Mon Sep 17 00:00:00 2001
From: Tristan Sloughter <t@crashfast.com>
Date: Fri, 22 May 2015 11:49:57 -0500
Subject: move handling of undefined app state to function

---
 src/rebar_app_info.erl    |  9 +++++++++
 src/rebar_prv_clean.erl   |  9 +--------
 src/rebar_prv_compile.erl | 10 +---------
 src/rebar_prv_eunit.erl   |  9 +--------
 4 files changed, 12 insertions(+), 25 deletions(-)

diff --git a/src/rebar_app_info.erl b/src/rebar_app_info.erl
index 1b87e0b..9db20e7 100644
--- a/src/rebar_app_info.erl
+++ b/src/rebar_app_info.erl
@@ -34,6 +34,7 @@
          source/2,
          state/1,
          state/2,
+         state_or_new/2,
          is_lock/1,
          is_lock/2,
          is_checkout/1,
@@ -260,6 +261,14 @@ state(AppInfo=#app_info_t{}, State) ->
 state(#app_info_t{state=State}) ->
     State.
 
+-spec state_or_new(rebar_state:t(), t()) -> rebar_state:t().
+state_or_new(State, AppInfo=#app_info_t{state=undefined}) ->
+    AppDir = dir(AppInfo),
+    C = rebar_config:consult(AppDir),
+    rebar_state:new(State, C, AppDir);
+state_or_new(_State, #app_info_t{state=State}) ->
+    State.
+
 -spec is_lock(t(), boolean()) -> t().
 is_lock(AppInfo=#app_info_t{}, IsLock) ->
     AppInfo#app_info_t{is_lock=IsLock}.
diff --git a/src/rebar_prv_clean.erl b/src/rebar_prv_clean.erl
index 272ac26..666ae13 100644
--- a/src/rebar_prv_clean.erl
+++ b/src/rebar_prv_clean.erl
@@ -67,16 +67,9 @@ format_error(Reason) ->
 clean_apps(State, Providers, Apps) ->
     lists:foreach(fun(AppInfo) ->
                           AppDir = rebar_app_info:dir(AppInfo),
-                          S = case rebar_app_info:state(AppInfo) of
-                                  undefined ->
-                                      C = rebar_config:consult(AppDir),
-                                      rebar_state:new(State, C, AppDir);
-                                  AppState ->
-                                      AppState
-                              end,
+                          S = rebar_app_info:state_or_new(State, AppInfo),
 
                           ?INFO("Cleaning out ~s...", [rebar_app_info:name(AppInfo)]),
-                          %% Legacy hook support
                           rebar_hooks:run_all_hooks(AppDir, pre, ?PROVIDER, Providers, S),
                           rebar_erlc_compiler:clean(State, rebar_app_info:out_dir(AppInfo)),
                           rebar_hooks:run_all_hooks(AppDir, post, ?PROVIDER, Providers, S)
diff --git a/src/rebar_prv_compile.erl b/src/rebar_prv_compile.erl
index 5a2e379..4a0fea8 100644
--- a/src/rebar_prv_compile.erl
+++ b/src/rebar_prv_compile.erl
@@ -71,17 +71,9 @@ build_apps(State, Providers, Apps) ->
 build_app(State, Providers, AppInfo) ->
     AppDir = rebar_app_info:dir(AppInfo),
     OutDir = rebar_app_info:out_dir(AppInfo),
-
     copy_app_dirs(State, AppDir, OutDir),
 
-    S = case rebar_app_info:state(AppInfo) of
-            undefined ->
-                C = rebar_config:consult(AppDir),
-                rebar_state:new(State, C, AppDir);
-            AppState ->
-                AppState
-        end,
-
+    S = rebar_app_info:state_or_new(State, AppInfo),
     compile(S, Providers, AppInfo).
 
 compile(State, Providers, AppInfo) ->
diff --git a/src/rebar_prv_eunit.erl b/src/rebar_prv_eunit.erl
index 3ad593d..ff871c8 100644
--- a/src/rebar_prv_eunit.erl
+++ b/src/rebar_prv_eunit.erl
@@ -134,14 +134,7 @@ resolve_suites(State, Apps, RawOpts) ->
 
 compile_tests(State, TestApps, Suites, RawOpts) ->
     F = fun(AppInfo) ->
-        AppDir = rebar_app_info:dir(AppInfo),
-        S = case rebar_app_info:state(AppInfo) of
-            undefined ->
-                C = rebar_config:consult(AppDir),
-                rebar_state:new(State, C, AppDir);
-            AppState ->
-                AppState
-        end,
+        S = rebar_app_info:state_or_new(State, AppInfo),
         ok = rebar_erlc_compiler:compile(replace_src_dirs(S),
                                          ec_cnv:to_list(rebar_app_info:out_dir(AppInfo)))
     end,
-- 
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