Clean up specs

7 files changed, 57 insertions, 56 deletions

diff --git a/include/rebar.hrl b/include/rebar.hrl
index c435a85..0f4e90f 100644
--- a/include/rebar.hrl
+++ b/include/rebar.hrl
@@ -1,6 +1,3 @@
--record(config, { dir,
-                  opts }).
-
 -define(FAIL, throw({error, failed})).
 
 -define(ABORT(Str, Args), rebar_utils:abort(Str, Args)).
diff --git a/src/rebar_asn1_compiler.erl b/src/rebar_asn1_compiler.erl
index 750ff41..bd16813 100644
--- a/src/rebar_asn1_compiler.erl
+++ b/src/rebar_asn1_compiler.erl
@@ -36,18 +36,19 @@
 %% Public API
 %% ===================================================================
 
--spec compile(Config::#config{}, AppFile::string()) -> 'ok'.
+-spec compile(Config::rebar_config:config(), AppFile::file:filename()) -> 'ok'.
 compile(Config, _AppFile) ->
     rebar_base_compiler:run(Config, filelib:wildcard("asn1/*.asn1"),
                             "asn1", ".asn1", "src", ".erl",
                             fun compile_asn1/3).
 
--spec clean(Config::#config{}, AppFile::string()) -> 'ok'.
+-spec clean(Config::rebar_config:config(), AppFile::file:filename()) -> 'ok'.
 clean(_Config, _AppFile) ->
     rebar_file_utils:delete_each(asn_generated_files("asn1", "src")),
     ok.
 
--spec compile_asn1(string(), string(), #config{}) -> ok.
+-spec compile_asn1(file:filename(), file:filename(),
+                   rebar_config:config()) -> ok.
 compile_asn1(Source, Target, Config) ->
     ok = rebar_utils:ensure_dir(Target),
     Opts = [{outdir, "src"}, noobj] ++ rebar_config:get(Config, asn1_opts, []),
diff --git a/src/rebar_config.erl b/src/rebar_config.erl
index a030e2c..751e088 100644
--- a/src/rebar_config.erl
+++ b/src/rebar_config.erl
@@ -35,6 +35,14 @@
 
 -include("rebar.hrl").
 
+-record(config, { dir :: file:filename(),
+                  opts :: list() }).
+
+%% Types that can be used from other modules -- alphabetically ordered.
+-export_type([config/0]).
+
+%% data types
+-opaque config() :: #config{}.
 
 %% ===================================================================
 %% Public API
diff --git a/src/rebar_dialyzer.erl b/src/rebar_dialyzer.erl
index c3e3c36..431299a 100644
--- a/src/rebar_dialyzer.erl
+++ b/src/rebar_dialyzer.erl
@@ -61,8 +61,7 @@
 %% ===================================================================
 
 %% @doc Perform static analysis on the contents of the ebin directory.
-%% @spec dialyze(Config::#config{}, File::string()) -> ok
--spec dialyze(Config::#config{}, File::string()) -> ok.
+-spec dialyze(Config::rebar_config:config(), File::file:filename()) -> ok.
 dialyze(Config, File) ->
     Plt = existing_plt_path(Config, File),
     case dialyzer:plt_info(Plt) of
@@ -102,8 +101,7 @@ dialyze(Config, File) ->
     ok.
 
 %% @doc Build the PLT.
-%% @spec 'build-plt'(Config::#config{}, File::string()) -> ok
--spec 'build-plt'(Config::#config{}, File::string()) -> ok.
+-spec 'build-plt'(Config::rebar_config:config(), File::file:filename()) -> ok.
 'build-plt'(Config, File) ->
     Plt = new_plt_path(Config, File),
 
@@ -122,8 +120,7 @@ dialyze(Config, File) ->
     ok.
 
 %% @doc Check whether the PLT is up-to-date (rebuilding it if not).
-%% @spec 'check-plt'(Config::#config{}, File::string()) -> ok
--spec 'check-plt'(Config::#config{}, File::string()) -> ok.
+-spec 'check-plt'(Config::rebar_config:config(), File::file:filename()) -> ok.
 'check-plt'(Config, File) ->
     Plt = existing_plt_path(Config, File),
     try dialyzer:run([{analysis_type, plt_check}, {init_plt, Plt}]) of
@@ -143,24 +140,22 @@ dialyze(Config, File) ->
 %% ===================================================================
 
 %% @doc Obtain the library paths for the supplied applications.
-%% @spec app_dirs(Apps::[atom()]) -> [string()]
--spec app_dirs(Apps::[atom()]) -> [string()].
+-spec app_dirs(Apps::[atom()]) -> [file:filename()].
 app_dirs(Apps) ->
     [filename:join(Path, "ebin")
      || Path <- [code:lib_dir(App) || App <- Apps], erlang:is_list(Path)].
 
 %% @doc Render the warnings on the console.
-%% @spec output_warnings(Warnings::[warning()]) -> 'ok'
 -spec output_warnings(Warnings::[warning()]) -> 'ok'.
 output_warnings(Warnings) ->
     lists:foreach(fun(Warning) ->
                           ?CONSOLE("~s", [dialyzer:format_warning(Warning)])
                   end, Warnings).
 
-%% @doc If the plt option is present in rebar.config return its value, otherwise
-%% return $HOME/.dialyzer_plt.
-%% @spec new_plt_path(Config::#config{}, File::string()) -> string()
--spec new_plt_path(Config::#config{}, File::string()) -> string().
+%% @doc If the plt option is present in rebar.config return its value,
+%% otherwise return $HOME/.dialyzer_plt.
+-spec new_plt_path(Config::rebar_config:config(),
+                   File::file:filename()) -> file:filename().
 new_plt_path(Config, File) ->
     AppName = rebar_app_utils:app_name(File),
     DialyzerOpts = rebar_config:get(Config, dialyzer_opts, []),
@@ -175,8 +170,8 @@ new_plt_path(Config, File) ->
 %% @doc If the plt option is present in rebar.config and the file exists
 %% return its value or if ~/.AppName_dialyzer_plt exists return that.
 %% Otherwise return ~/.dialyzer_plt if it exists or abort.
-%% @spec existing_plt_path(Config::#config{}, File::string()) -> string()
--spec existing_plt_path(Config::#config{}, File::string()) -> string().
+-spec existing_plt_path(Config::rebar_config:config(),
+                        File::file:filename()) -> file:filename().
 existing_plt_path(Config, File) ->
     AppName = rebar_app_utils:app_name(File),
     DialyzerOpts = rebar_config:get(Config, dialyzer_opts, []),
@@ -205,8 +200,7 @@ existing_plt_path(Config, File) ->
 
 %% @doc If the warnings option is present in rebar.config return its value,
 %% otherwise return [].
-%% @spec warnings(Config::#config{}) -> list()
--spec warnings(Config::#config{}) -> list().
+-spec warnings(Config::rebar_config:config()) -> list().
 warnings(Config) ->
     DialyzerOpts = rebar_config:get(Config, dialyzer_opts, []),
     proplists:get_value(warnings, DialyzerOpts, []).
diff --git a/src/rebar_edoc.erl b/src/rebar_edoc.erl
index 8eda04d..ce5458a 100644
--- a/src/rebar_edoc.erl
+++ b/src/rebar_edoc.erl
@@ -46,8 +46,7 @@
 %% ===================================================================
 
 %% @doc Generate Erlang program documentation.
-%% @spec doc(#config{}, string()) -> ok
--spec(doc(Config::#config{}, File::string()) -> ok).
+-spec doc(Config::rebar_config:config(), File::file:filename()) -> ok.
 doc(Config, File) ->
     {ok, AppName, _AppData} = rebar_app_utils:load_app_file(File),
     EDocOpts = rebar_config:get(Config, edoc_opts, []),
diff --git a/src/rebar_erlc_compiler.erl b/src/rebar_erlc_compiler.erl
index df9e1c0..a9a8360 100644
--- a/src/rebar_erlc_compiler.erl
+++ b/src/rebar_erlc_compiler.erl
@@ -67,7 +67,7 @@
 %%                           'old_inets'}]}.
 %%
 
--spec compile(Config::#config{}, AppFile::string()) -> 'ok'.
+-spec compile(Config::rebar_config:config(), AppFile::file:filename()) -> 'ok'.
 compile(Config, _AppFile) ->
     rebar_base_compiler:run(Config,
                             check_files(rebar_config:get_local(
@@ -86,7 +86,7 @@ compile(Config, _AppFile) ->
                             "mibs", ".mib", "priv/mibs", ".bin",
                             fun compile_mib/3).
 
--spec clean(Config::#config{}, AppFile::string()) -> 'ok'.
+-spec clean(Config::rebar_config:config(), AppFile::file:filename()) -> 'ok'.
 clean(_Config, _AppFile) ->
     lists:foreach(fun(F) -> ok = rebar_file_utils:rm_rf(F) end,
                   ["ebin/*.beam", "priv/mibs/*.bin"]),
@@ -94,7 +94,7 @@ clean(_Config, _AppFile) ->
     YrlFiles = rebar_utils:find_files("src", "^.*\\.[x|y]rl\$"),
     rebar_file_utils:delete_each(
       [ binary_to_list(iolist_to_binary(re:replace(F, "\\.[x|y]rl$", ".erl")))
-        || F <- YrlFiles  ]),
+        || F <- YrlFiles ]),
 
     %% Erlang compilation is recursive, so it's possible that we have a nested
     %% directory structure in ebin with .beam files within. As such, we want
@@ -110,7 +110,8 @@ clean(_Config, _AppFile) ->
 %% .erl Compilation API (externally used by only eunit)
 %% ===================================================================
 
--spec doterl_compile(Config::#config{}, OutDir::string()) -> 'ok'.
+-spec doterl_compile(Config::rebar_config:config(),
+                     OutDir::file:filename()) -> 'ok'.
 doterl_compile(Config, OutDir) ->
     doterl_compile(Config, OutDir, []).
 
@@ -165,14 +166,15 @@ doterl_compile(Config, OutDir, MoreSources) ->
 %% Internal functions
 %% ===================================================================
 
--spec include_path(Source::string(), Config::#config{}) -> [string(), ...].
+-spec include_path(Source::file:filename(),
+                   Config::rebar_config:config()) -> [file:filename(), ...].
 include_path(Source, Config) ->
     ErlOpts = rebar_config:get(Config, erl_opts, []),
     ["include", filename:dirname(Source)]
         ++ proplists:get_all_values(i, ErlOpts).
 
--spec inspect(Source::string(),
-              IncludePath::[string(),...]) -> {string(), [string()]}.
+-spec inspect(Source::file:filename(),
+              IncludePath::[file:filename(), ...]) -> {string(), [string()]}.
 inspect(Source, IncludePath) ->
     ModuleDefault = filename:basename(Source, ".erl"),
     case epp:open(Source, IncludePath) of
@@ -183,7 +185,7 @@ inspect(Source, IncludePath) ->
             {ModuleDefault, []}
     end.
 
--spec inspect_epp(Epp::pid(), Source::string(), Module::string(),
+-spec inspect_epp(Epp::pid(), Source::file:filename(), Module::file:filename(),
                   Includes::[string()]) -> {string(), [string()]}.
 inspect_epp(Epp, Source, Module, Includes) ->
     case epp:parse_erl_form(Epp) of
@@ -218,15 +220,16 @@ inspect_epp(Epp, Source, Module, Includes) ->
             inspect_epp(Epp, Source, Module, Includes)
     end.
 
--spec needs_compile(Source::string(), Target::string(),
+-spec needs_compile(Source::file:filename(), Target::file:filename(),
                     Hrls::[string()]) -> boolean().
 needs_compile(Source, Target, Hrls) ->
     TargetLastMod = filelib:last_modified(Target),
     lists:any(fun(I) -> TargetLastMod < filelib:last_modified(I) end,
               [Source] ++ Hrls).
 
--spec internal_erl_compile(Source::string(), Config::#config{},
-                           Outdir::string(),
+-spec internal_erl_compile(Source::file:filename(),
+                           Config::rebar_config:config(),
+                           Outdir::file:filename(),
                            ErlOpts::list()) -> 'ok' | 'skipped'.
 internal_erl_compile(Source, Config, Outdir, ErlOpts) ->
     %% Determine the target name and includes list by inspecting the source file
@@ -237,7 +240,7 @@ internal_erl_compile(Source, Config, Outdir, ErlOpts) ->
     ok = filelib:ensure_dir(Target),
 
     %% If the file needs compilation, based on last mod date of includes or
-    %% the target,
+    %% the target
     case needs_compile(Source, Target, Hrls) of
         true ->
             Opts = [{outdir, filename:dirname(Target)}] ++
@@ -263,8 +266,8 @@ internal_erl_compile(Source, Config, Outdir, ErlOpts) ->
             skipped
     end.
 
--spec compile_mib(Source::string(), Target::string(),
-                  Config::#config{}) -> 'ok'.
+-spec compile_mib(Source::file:filename(), Target::file:filename(),
+                  Config::rebar_config:config()) -> 'ok'.
 compile_mib(Source, Target, Config) ->
     ok = rebar_utils:ensure_dir(Target),
     Opts = [{outdir, "priv/mibs"}, {i, ["priv/mibs"]}] ++
@@ -276,22 +279,22 @@ compile_mib(Source, Target, Config) ->
             ?FAIL
     end.
 
--spec compile_xrl(Source::string(), Target::string(),
-                  Config::#config{}) -> 'ok'.
+-spec compile_xrl(Source::file:filename(), Target::file:filename(),
+                  Config::rebar_config:config()) -> 'ok'.
 compile_xrl(Source, Target, Config) ->
     Opts = [{scannerfile, Target}, {return, true}
             |rebar_config:get(Config, xrl_opts, [])],
     compile_xrl_yrl(Source, Target, Opts, leex).
 
--spec compile_yrl(Source::string(), Target::string(),
-                  Config::#config{}) -> 'ok'.
+-spec compile_yrl(Source::file:filename(), Target::file:filename(),
+                  Config::rebar_config:config()) -> 'ok'.
 compile_yrl(Source, Target, Config) ->
     Opts = [{parserfile, Target}, {return, true}
             |rebar_config:get(Config, yrl_opts, [])],
     compile_xrl_yrl(Source, Target, Opts, yecc).
 
--spec compile_xrl_yrl(Source::string(), Target::string(), Opts::list(),
-                      Mod::atom()) -> 'ok'.
+-spec compile_xrl_yrl(Source::file:filename(), Target::file:filename(),
+                      Opts::list(), Mod::atom()) -> 'ok'.
 compile_xrl_yrl(Source, Target, Opts, Mod) ->
     case needs_compile(Source, Target, []) of
         true ->
@@ -317,17 +320,17 @@ gather_src([], Srcs) ->
 gather_src([Dir|Rest], Srcs) ->
     gather_src(Rest, Srcs ++ rebar_utils:find_files(Dir, ".*\\.erl\$")).
 
--spec src_dirs(SrcDirs::[string()]) -> [string(),...].
+-spec src_dirs(SrcDirs::[string()]) -> [file:filename(), ...].
 src_dirs([]) ->
     ["src"];
 src_dirs(SrcDirs) ->
     SrcDirs ++ src_dirs([]).
 
--spec dirs(Dir::string()) -> [string()].
+-spec dirs(Dir::file:filename()) -> [file:filename()].
 dirs(Dir) ->
     [F || F <- filelib:wildcard(filename:join([Dir, "*"])), filelib:is_dir(F)].
 
--spec delete_dir(Dir::string(),
+-spec delete_dir(Dir::file:filename(),
                  Subdirs::[string()]) -> 'ok' | {'error', atom()}.
 delete_dir(Dir, []) ->
     file:del_dir(Dir);
@@ -335,8 +338,8 @@ delete_dir(Dir, Subdirs) ->
     lists:foreach(fun(D) -> delete_dir(D, dirs(D)) end, Subdirs),
     file:del_dir(Dir).
 
--spec compile_priority(File::string()) -> 'normal' | 'behaviour' |
-                                          'parse_transform'.
+-spec compile_priority(File::file:filename()) -> 'normal' | 'behaviour' |
+                                                 'parse_transform'.
 compile_priority(File) ->
     case epp_dodger:parse_file(File) of
         {error, _} ->
@@ -369,7 +372,7 @@ compile_priority(File) ->
 %% Filter a list of erl_opts platform_define options such that only
 %% those which match the provided architecture regex are returned.
 %%
--spec filter_defines(ErlOpts::list(),Acc::list()) -> list().
+-spec filter_defines(ErlOpts::list(), Acc::list()) -> list().
 filter_defines([], Acc) ->
     lists:reverse(Acc);
 filter_defines([{platform_define, ArchRegex, Key} | Rest], Acc) ->
@@ -392,7 +395,7 @@ filter_defines([Opt | Rest], Acc) ->
 %%
 %% Ensure all files in a list are present and abort if one is missing
 %%
--spec check_files(FileList::[string()]) -> [string()].
+-spec check_files(FileList::[file:filename()]) -> [file:filename()].
 check_files(FileList) ->
     [check_file(F) || F <- FileList].
 
diff --git a/src/rebar_file_utils.erl b/src/rebar_file_utils.erl
index 731f9d9..56877e3 100644
--- a/src/rebar_file_utils.erl
+++ b/src/rebar_file_utils.erl
@@ -39,8 +39,7 @@
 
 %% @doc Remove files and directories.
 %% Target is a single filename, directoryname or wildcard expression.
-%% @spec rm_rf(string()) -> ok
--spec rm_rf(Target::string()) -> ok.
+-spec rm_rf(Target::file:filename()) -> ok.
 rm_rf(Target) ->
     case os:type() of
         {unix, _} ->
@@ -56,7 +55,7 @@ rm_rf(Target) ->
             ok
     end.
 
--spec cp_r(Sources::list(string()), Dest::string()) -> ok.
+-spec cp_r(Sources::list(string()), Dest::file:filename()) -> ok.
 cp_r(Sources, Dest) ->
     case os:type() of
         {unix, _} ->
@@ -69,7 +68,7 @@ cp_r(Sources, Dest) ->
             ok
     end.
 
--spec mv(Source::string(), Dest::string()) -> ok.
+-spec mv(Source::string(), Dest::file:filename()) -> ok.
 mv(Source, Dest) ->
     case os:type() of
         {unix, _} ->