diff options
author | Fred Hebert <mononcqc@ferd.ca> | 2016-12-23 14:17:13 -0500 |
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committer | GitHub <noreply@github.com> | 2016-12-23 14:17:13 -0500 |
commit | 768a7c5c3096583059ae036b40fbe9c692d5eebe (patch) | |
tree | 7767e6f7d1ecb7c4341c693cb04aac293386a0cd /src/rebar3.erl | |
parent | a1a8387a191514ac0b939c23d10e34b49480dfd8 (diff) | |
parent | 8ae17c483d86f151d69091546b3577381662e27e (diff) |
Merge pull request #1391 from ferd/doc-and-types
Type specifications and edocs improvements
Diffstat (limited to 'src/rebar3.erl')
-rw-r--r-- | src/rebar3.erl | 76 |
1 files changed, 61 insertions, 15 deletions
diff --git a/src/rebar3.erl b/src/rebar3.erl index 1059904..56bf3e8 100644 --- a/src/rebar3.erl +++ b/src/rebar3.erl @@ -24,6 +24,16 @@ %% OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN %% THE SOFTWARE. %% ------------------------------------------------------------------- +%% +%% @doc Main module for rebar3. Supports two interfaces; one for escripts, +%% and one for usage as a library (although rebar3 makes a lot of +%% assumptions about its environment, making it a bit tricky to use as +%% a lib). +%% +%% This module's job is mostly to set up the root environment for rebar3 +%% and handle global options (mostly all from the ENV) and make them +%% accessible to the rest of the run. +%% @end -module(rebar3). -export([main/0, @@ -43,14 +53,14 @@ %% Public API %% ==================================================================== -%% For running with: +%% @doc For running with: %% erl +sbtu +A0 -noinput -mode minimal -boot start_clean -s rebar3 main -extra "$@" -spec main() -> no_return(). main() -> List = init:get_plain_arguments(), main(List). -%% escript Entry point +%% @doc escript Entry point -spec main(list()) -> no_return(). main(Args) -> try run(Args) of @@ -63,7 +73,8 @@ main(Args) -> handle_error(Error) end. -%% Erlang-API entry point +%% @doc Erlang-API entry point +-spec run(rebar_state:t(), [string()]) -> {ok, rebar_state:t()} | {error, term()}. run(BaseState, Commands) -> start_and_load_apps(api), BaseState1 = rebar_state:set(BaseState, task, Commands), @@ -78,6 +89,10 @@ run(BaseState, Commands) -> %% Internal functions %% ==================================================================== +%% @private sets up the rebar3 environment based on the command line +%% arguments passed, if they have any relevance; used to translate +%% from the escript call-site into a common one with the library +%% usage. run(RawArgs) -> start_and_load_apps(command_line), @@ -95,7 +110,13 @@ run(RawArgs) -> {BaseState2, _Args1} = set_options(BaseState1, {[], []}), run_aux(BaseState2, RawArgs). +%% @private Junction point between the CLI and library entry points. +%% From here on the module's role is a shared path here to finish +%% up setting the environment for the run. +-spec run_aux(rebar_state:t(), [string()]) -> + {ok, rebar_state:t()} | {error, term()}. run_aux(State, RawArgs) -> + %% Profile override; can only support one profile State1 = case os:getenv("REBAR_PROFILE") of false -> State; @@ -108,6 +129,7 @@ run_aux(State, RawArgs) -> rebar_utils:check_min_otp_version(rebar_state:get(State1, minimum_otp_vsn, undefined)), rebar_utils:check_blacklisted_otp_versions(rebar_state:get(State1, blacklisted_otp_vsns, undefined)), + %% Change the default hex CDN State2 = case os:getenv("HEX_CDN") of false -> State1; @@ -144,6 +166,9 @@ run_aux(State, RawArgs) -> rebar_core:init_command(rebar_state:command_args(State10, Args), Task). +%% @doc set up base configuration having to do with verbosity, where +%% to find config files, and so on, and return an internal rebar3 state term. +-spec init_config() -> rebar_state:t(). init_config() -> rebar_utils:set_httpc_options(), @@ -190,6 +215,17 @@ init_config() -> %% Initialize vsn cache rebar_state:set(State1, vsn_cache, dict:new()). +%% @doc Parse basic rebar3 arguments to find the top-level task +%% to be run; this parsing is only partial from the point of view that +%% runs done with arguments like `as $PROFILE do $TASK' will just +%% return `as', which is then in charge of doing a more dynamic +%% dispatch. +%% If no arguments are given, the `help' task is returned. +%% If special arguments like `-h' or `-v' are translated to `help' +%% and `version' tasks. +%% The unparsed parts of arguments are returned in: +%% `{Task, Rest}'. +-spec parse_args([string()]) -> {atom(), [string()]}. parse_args([]) -> parse_args(["help"]); parse_args([H | Rest]) when H =:= "-h" @@ -201,6 +237,7 @@ parse_args([H | Rest]) when H =:= "-v" parse_args([Task | RawRest]) -> {list_to_atom(Task), RawRest}. +%% @private actually not too sure what this does anymore. set_options(State, {Options, NonOptArgs}) -> GlobalDefines = proplists:get_all_values(defines, Options), @@ -213,9 +250,8 @@ set_options(State, {Options, NonOptArgs}) -> {rebar_state:set(State2, task, Task), NonOptArgs}. -%% -%% get log level based on getopt option -%% +%% @doc get log level based on getopt options and ENV +-spec log_level() -> integer(). log_level() -> case os:getenv("QUIET") of Q when Q == false; Q == "" -> @@ -230,18 +266,16 @@ log_level() -> rebar_log:error_level() end. -%% -%% show version information and halt -%% +%% @doc show version information +-spec version() -> ok. version() -> {ok, Vsn} = application:get_key(rebar, vsn), ?CONSOLE("rebar ~s on Erlang/OTP ~s Erts ~s", [Vsn, erlang:system_info(otp_release), erlang:system_info(version)]). +%% @private set global flag based on getopt option boolean value %% TODO: Actually make it 'global' -%% -%% set global flag based on getopt option boolean value -%% +-spec set_global_flag(rebar_state:t(), list(), term()) -> rebar_state:t(). set_global_flag(State, Options, Flag) -> Value = case proplists:get_bool(Flag, Options) of true -> @@ -251,9 +285,9 @@ set_global_flag(State, Options, Flag) -> end, rebar_state:set(State, Flag, Value). -%% -%% options accepted via getopt -%% + +%% @doc options accepted via getopt +-spec global_option_spec_list() -> [{atom(), char(), string(), atom(), string()}, ...]. global_option_spec_list() -> [ %% {Name, ShortOpt, LongOpt, ArgSpec, HelpMsg} @@ -262,6 +296,9 @@ global_option_spec_list() -> {task, undefined, undefined, string, "Task to run."} ]. +%% @private translate unhandled errors and internal return codes into proper +%% erroneous program exits. +-spec handle_error(term()) -> no_return(). handle_error(rebar_abort) -> erlang:halt(1); handle_error({error, rebar_abort}) -> @@ -295,6 +332,11 @@ handle_error(Error) -> ?INFO("When submitting a bug report, please include the output of `rebar3 report \"your command\"`", []), erlang:halt(1). +%% @private Boot Erlang dependencies; problem is that escripts don't auto-boot +%% stuff the way releases do and we have to do it by hand. +%% This also lets us detect and show nicer errors when a critical lib is +%% not supported +-spec start_and_load_apps(command_line|api) -> term(). start_and_load_apps(Caller) -> _ = application:load(rebar), %% Make sure crypto is running @@ -305,6 +347,9 @@ start_and_load_apps(Caller) -> inets:start(), inets:start(httpc, [{profile, rebar}]). +%% @doc Make sure a required app is running, or display an error message +%% and abort if there's a problem. +-spec ensure_running(atom(), command_line|api) -> ok | no_return(). ensure_running(App, Caller) -> case application:start(App) of ok -> ok; @@ -321,6 +366,7 @@ ensure_running(App, Caller) -> throw(rebar_abort) end. +-spec state_from_global_config([term()], file:filename()) -> rebar_state:t(). state_from_global_config(Config, GlobalConfigFile) -> GlobalConfigTerms = rebar_config:consult_file(GlobalConfigFile), GlobalConfig = rebar_state:new(GlobalConfigTerms), |