From 68911d546fe9f73a79f7c2e7070441b517151335 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bj=C3=B6rn=20Gustavsson?= <bjorn@erlang.org>
Date: Mon, 10 Feb 2014 13:41:42 +0100
Subject: cover: Support running cover on itself
We want to see at least some coverage of cover itself.
---
lib/tools/src/cover.erl | 63 ++++++++++++++++---------------------------------
1 file changed, 20 insertions(+), 43 deletions(-)
(limited to 'lib/tools')
diff --git a/lib/tools/src/cover.erl b/lib/tools/src/cover.erl
index d26b8adfcd..7123ce8680 100644
--- a/lib/tools/src/cover.erl
+++ b/lib/tools/src/cover.erl
@@ -92,6 +92,9 @@
%-export([bump/5]).
-export([transform/4]). % for test purposes
+%% Used internally to ensure we upgrade the code to the latest version.
+-export([main_process_loop/1,remote_process_loop/1]).
+
-record(main_state, {compiled=[], % [{Module,File}]
imported=[], % [{Module,File,ImportFile}]
stopper, % undefined | pid()
@@ -230,25 +233,9 @@ compile_directory(Dir) when is_list(Dir) ->
compile_directory(Dir, Options) when is_list(Dir), is_list(Options) ->
case file:list_dir(Dir) of
{ok, Files} ->
-
- %% Filter out all erl files (except cover.erl)
- ErlFileNames =
- lists:filter(fun("cover.erl") ->
- false;
- (File) ->
- case filename:extension(File) of
- ".erl" -> true;
- _ -> false
- end
- end,
- Files),
-
- %% Create a list of .erl file names (incl path) and call
- %% compile_modules/2 with the list of file names.
- ErlFiles = lists:map(fun(ErlFileName) ->
- filename:join(Dir, ErlFileName)
- end,
- ErlFileNames),
+ ErlFiles = [filename:join(Dir, File) ||
+ File <- Files,
+ filename:extension(File) =:= ".erl"],
compile_modules(ErlFiles, Options);
Error ->
Error
@@ -320,25 +307,9 @@ compile_beam_directory() ->
compile_beam_directory(Dir) when is_list(Dir) ->
case file:list_dir(Dir) of
{ok, Files} ->
-
- %% Filter out all beam files (except cover.beam)
- BeamFileNames =
- lists:filter(fun("cover.beam") ->
- false;
- (File) ->
- case filename:extension(File) of
- ".beam" -> true;
- _ -> false
- end
- end,
- Files),
-
- %% Create a list of .beam file names (incl path) and call
- %% compile_beam/1 for each such file name
- BeamFiles = lists:map(fun(BeamFileName) ->
- filename:join(Dir, BeamFileName)
- end,
- BeamFileNames),
+ BeamFiles = [filename:join(Dir, File) ||
+ File <- Files,
+ filename:extension(File) =:= ".beam"],
compile_beams(BeamFiles);
Error ->
Error
@@ -613,8 +584,11 @@ main_process_loop(State) ->
Compiled = add_compiled(Module, File,
State#main_state.compiled),
Imported = remove_imported(Module,State#main_state.imported),
- main_process_loop(State#main_state{compiled = Compiled,
- imported = Imported});
+ NewState = State#main_state{compiled = Compiled,
+ imported = Imported},
+ %% This module (cover) could have been reloaded. Make
+ %% sure we run the new code.
+ ?MODULE:main_process_loop(NewState);
error ->
reply(From, {error, File}),
main_process_loop(State)
@@ -639,8 +613,11 @@ main_process_loop(State) ->
end,
reply(From,Reply),
Imported = remove_imported(Module,State#main_state.imported),
- main_process_loop(State#main_state{compiled = Compiled,
- imported = Imported});
+ NewState = State#main_state{compiled = Compiled,
+ imported = Imported},
+ %% This module (cover) could have been reloaded. Make
+ %% sure we run the new code.
+ ?MODULE:main_process_loop(NewState);
{error,no_beam} ->
%% The module has first been compiled from .erl, and now
%% someone tries to compile it from .beam
@@ -857,7 +834,7 @@ remote_process_loop(State) ->
{remote,load_compiled,Compiled} ->
Compiled1 = load_compiled(Compiled,State#remote_state.compiled),
remote_reply(State#remote_state.main_node, ok),
- remote_process_loop(State#remote_state{compiled=Compiled1});
+ ?MODULE:remote_process_loop(State#remote_state{compiled=Compiled1});
{remote,unload,UnloadedModules} ->
unload(UnloadedModules),
--
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