mirror of
https://github.com/correl/rebar.git
synced 2024-12-18 03:00:17 +00:00
a015892e21
Rename rebar_core functions for improved readability. Remove redundant comments and blank lines.
468 lines
20 KiB
Erlang
468 lines
20 KiB
Erlang
%% -*- erlang-indent-level: 4;indent-tabs-mode: nil -*-
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%% ex: ts=4 sw=4 et
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%% -------------------------------------------------------------------
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%%
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%% rebar: Erlang Build Tools
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%%
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%% Copyright (c) 2009, 2010 Dave Smith (dizzyd@dizzyd.com)
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%%
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%% Permission is hereby granted, free of charge, to any person obtaining a copy
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%% of this software and associated documentation files (the "Software"), to deal
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%% in the Software without restriction, including without limitation the rights
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%% to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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%% copies of the Software, and to permit persons to whom the Software is
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%% furnished to do so, subject to the following conditions:
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%%
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%% The above copyright notice and this permission notice shall be included in
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%% all copies or substantial portions of the Software.
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%%
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%% THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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%% IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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%% FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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%% AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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%% LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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%% OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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%% THE SOFTWARE.
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%% -------------------------------------------------------------------
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-module(rebar_erlc_compiler).
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-export([compile/2,
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clean/2]).
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%% for internal use by only eunit and qc
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-export([test_compile/3]).
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-include("rebar.hrl").
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%% ===================================================================
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%% Public API
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%% ===================================================================
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%% Supported configuration variables:
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%%
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%% * erl_opts - Erlang list of options passed to compile:file/2
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%% It is also possible to specify platform specific
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%% options by specifying a pair or a triplet where the
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%% first string is a regex that is checked against the
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%% string
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%%
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%% OtpRelease ++ "-" ++ SysArch ++ "-" ++ Words.
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%%
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%% where
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%%
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%% OtpRelease = erlang:system_info(otp_release).
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%% SysArch = erlang:system_info(system_architecture).
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%% Words = integer_to_list(8 *
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%% erlang:system_info({wordsize, external})).
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%%
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%% E.g. to define HAVE_SENDFILE only on systems with
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%% sendfile(), to define BACKLOG on Linux/FreeBSD as 128,
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%% and to define 'old_inets' for R13 OTP release do:
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%%
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%% {erl_opts, [{platform_define,
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%% "(linux|solaris|freebsd|darwin)",
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%% 'HAVE_SENDFILE'},
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%% {platform_define, "(linux|freebsd)",
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%% 'BACKLOG', 128},
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%% {platform_define, "R13",
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%% 'old_inets'}]}.
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%%
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-spec compile(rebar_config:config(), file:filename()) -> 'ok'.
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compile(Config, _AppFile) ->
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rebar_base_compiler:run(Config,
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check_files(rebar_config:get_local(
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Config, xrl_first_files, [])),
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"src", ".xrl", "src", ".erl",
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fun compile_xrl/3),
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rebar_base_compiler:run(Config,
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check_files(rebar_config:get_local(
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Config, yrl_first_files, [])),
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"src", ".yrl", "src", ".erl",
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fun compile_yrl/3),
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rebar_base_compiler:run(Config,
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check_files(rebar_config:get_local(
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Config, mib_first_files, [])),
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"mibs", ".mib", "priv/mibs", ".bin",
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fun compile_mib/3),
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doterl_compile(Config, "ebin").
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-spec clean(rebar_config:config(), file:filename()) -> 'ok'.
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clean(_Config, _AppFile) ->
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MibFiles = rebar_utils:find_files("mibs", "^.*\\.mib\$"),
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MIBs = [filename:rootname(filename:basename(MIB)) || MIB <- MibFiles],
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rebar_file_utils:delete_each(
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[filename:join(["include",MIB++".hrl"]) || MIB <- MIBs]),
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lists:foreach(fun(F) -> ok = rebar_file_utils:rm_rf(F) end,
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["ebin/*.beam", "priv/mibs/*.bin"]),
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YrlFiles = rebar_utils:find_files("src", "^.*\\.[x|y]rl\$"),
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rebar_file_utils:delete_each(
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[ binary_to_list(iolist_to_binary(re:replace(F, "\\.[x|y]rl$", ".erl")))
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|| F <- YrlFiles ]),
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%% Erlang compilation is recursive, so it's possible that we have a nested
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%% directory structure in ebin with .beam files within. As such, we want
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%% to scan whatever is left in the ebin/ directory for sub-dirs which
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%% satisfy our criteria.
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BeamFiles = rebar_utils:find_files("ebin", "^.*\\.beam\$"),
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rebar_file_utils:delete_each(BeamFiles),
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lists:foreach(fun(Dir) -> delete_dir(Dir, dirs(Dir)) end, dirs("ebin")),
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ok.
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%% ===================================================================
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%% .erl Compilation API (externally used by only eunit and qc)
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%% ===================================================================
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test_compile(Config, Cmd, OutDir) ->
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%% Obtain all the test modules for inclusion in the compile stage.
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%% Notice: this could also be achieved with the following
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%% rebar.config option: {test_compile_opts, [{src_dirs, ["src", "test"]}]}
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TestErls = rebar_utils:find_files("test", ".*\\.erl\$"),
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%% Copy source files to eunit dir for cover in case they are not directly
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%% in src but in a subdirectory of src. Cover only looks in cwd and ../src
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%% for source files. Also copy files from src_dirs.
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ErlOpts = rebar_utils:erl_opts(Config),
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SrcDirs = rebar_utils:src_dirs(proplists:append_values(src_dirs, ErlOpts)),
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SrcErls = lists:foldl(
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fun(Dir, Acc) ->
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Files = rebar_utils:find_files(Dir, ".*\\.erl\$"),
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lists:append(Acc, Files)
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end, [], SrcDirs),
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%% If it is not the first time rebar eunit is executed, there will be source
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%% files already present in OutDir. Since some SCMs (like Perforce) set
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%% the source files as being read only (unless they are checked out), we
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%% need to be sure that the files already present in OutDir are writable
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%% before doing the copy. This is done here by removing any file that was
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%% already present before calling rebar_file_utils:cp_r.
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%% Get the full path to a file that was previously copied in OutDir
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ToCleanUp = fun(F, Acc) ->
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F2 = filename:basename(F),
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F3 = filename:join([OutDir, F2]),
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case filelib:is_regular(F3) of
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true -> [F3|Acc];
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false -> Acc
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end
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end,
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ok = rebar_file_utils:delete_each(lists:foldl(ToCleanUp, [], TestErls)),
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ok = rebar_file_utils:delete_each(lists:foldl(ToCleanUp, [], SrcErls)),
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ok = rebar_file_utils:cp_r(SrcErls ++ TestErls, OutDir),
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%% Compile erlang code to OutDir, using a tweaked config
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%% with appropriate defines for eunit, and include all the test modules
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%% as well.
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ok = doterl_compile(test_compile_config(Config, Cmd), OutDir, TestErls),
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{ok, SrcErls}.
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%% ===================================================================
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%% Internal functions
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%% ===================================================================
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test_compile_config(Config, Cmd) ->
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{Config1, TriqOpts} = triq_opts(Config),
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{Config2, PropErOpts} = proper_opts(Config1),
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{Config3, EqcOpts} = eqc_opts(Config2),
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ErlOpts = rebar_config:get_list(Config3, erl_opts, []),
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OptsAtom = list_to_atom(Cmd ++ "_compile_opts"),
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EunitOpts = rebar_config:get_list(Config3, OptsAtom, []),
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Opts0 = [{d, 'TEST'}] ++
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ErlOpts ++ EunitOpts ++ TriqOpts ++ PropErOpts ++ EqcOpts,
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Opts = [O || O <- Opts0, O =/= no_debug_info],
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Config4 = rebar_config:set(Config3, erl_opts, Opts),
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FirstFilesAtom = list_to_atom(Cmd ++ "_first_files"),
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FirstErls = rebar_config:get_list(Config4, FirstFilesAtom, []),
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rebar_config:set(Config4, erl_first_files, FirstErls).
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triq_opts(Config) ->
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{NewConfig, IsAvail} = is_lib_avail(Config, is_triq_avail, triq,
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"triq.hrl", "Triq"),
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Opts = define_if('TRIQ', IsAvail),
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{NewConfig, Opts}.
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proper_opts(Config) ->
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{NewConfig, IsAvail} = is_lib_avail(Config, is_proper_avail, proper,
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"proper.hrl", "PropEr"),
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Opts = define_if('PROPER', IsAvail),
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{NewConfig, Opts}.
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eqc_opts(Config) ->
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{NewConfig, IsAvail} = is_lib_avail(Config, is_eqc_avail, eqc,
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"eqc.hrl", "QuickCheck"),
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Opts = define_if('EQC', IsAvail),
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{NewConfig, Opts}.
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define_if(Def, true) -> [{d, Def}];
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define_if(_Def, false) -> [].
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is_lib_avail(Config, DictKey, Mod, Hrl, Name) ->
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case rebar_config:get_xconf(Config, DictKey, undefined) of
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undefined ->
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IsAvail = case code:lib_dir(Mod, include) of
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{error, bad_name} ->
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false;
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Dir ->
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filelib:is_regular(filename:join(Dir, Hrl))
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end,
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NewConfig = rebar_config:set_xconf(Config, DictKey, IsAvail),
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?DEBUG("~s availability: ~p\n", [Name, IsAvail]),
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{NewConfig, IsAvail};
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IsAvail ->
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{Config, IsAvail}
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end.
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-spec doterl_compile(rebar_config:config(), file:filename()) -> 'ok'.
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doterl_compile(Config, OutDir) ->
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doterl_compile(Config, OutDir, []).
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doterl_compile(Config, OutDir, MoreSources) ->
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FirstErls = rebar_config:get_list(Config, erl_first_files, []),
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ErlOpts = rebar_utils:erl_opts(Config),
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?DEBUG("erl_opts ~p~n", [ErlOpts]),
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%% Support the src_dirs option allowing multiple directories to
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%% contain erlang source. This might be used, for example, should
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%% eunit tests be separated from the core application source.
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SrcDirs = rebar_utils:src_dirs(proplists:append_values(src_dirs, ErlOpts)),
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RestErls = [Source || Source <- gather_src(SrcDirs, []) ++ MoreSources,
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not lists:member(Source, FirstErls)],
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%% Split RestErls so that parse_transforms and behaviours are instead added
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%% to erl_first_files, parse transforms first.
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%% This should probably be somewhat combined with inspect_epp
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[ParseTransforms, Behaviours, OtherErls] =
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lists:foldl(fun(F, [A, B, C]) ->
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case compile_priority(F) of
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parse_transform ->
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[[F | A], B, C];
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behaviour ->
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[A, [F | B], C];
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callback ->
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[A, [F | B], C];
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_ ->
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[A, B, [F | C]]
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end
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end, [[], [], []], RestErls),
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NewFirstErls = FirstErls ++ ParseTransforms ++ Behaviours,
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%% Make sure that ebin/ exists and is on the path
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ok = filelib:ensure_dir(filename:join("ebin", "dummy.beam")),
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CurrPath = code:get_path(),
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true = code:add_path(filename:absname("ebin")),
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OutDir1 = proplists:get_value(outdir, ErlOpts, OutDir),
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rebar_base_compiler:run(Config, NewFirstErls, OtherErls,
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fun(S, C) ->
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internal_erl_compile(C, S, OutDir1, ErlOpts)
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end),
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true = code:set_path(CurrPath),
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ok.
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-spec include_path(file:filename(),
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rebar_config:config()) -> [file:filename(), ...].
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include_path(Source, Config) ->
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ErlOpts = rebar_config:get(Config, erl_opts, []),
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["include", filename:dirname(Source)]
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++ proplists:get_all_values(i, ErlOpts).
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-spec inspect(file:filename(),
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[file:filename(), ...]) -> {string(), [string()]}.
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inspect(Source, IncludePath) ->
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ModuleDefault = filename:basename(Source, ".erl"),
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case epp:open(Source, IncludePath) of
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{ok, Epp} ->
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inspect_epp(Epp, Source, ModuleDefault, []);
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{error, Reason} ->
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?DEBUG("Failed to inspect ~s: ~p\n", [Source, Reason]),
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{ModuleDefault, []}
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end.
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-spec inspect_epp(pid(), file:filename(), file:filename(),
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[string()]) -> {string(), [string()]}.
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inspect_epp(Epp, Source, Module, Includes) ->
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case epp:parse_erl_form(Epp) of
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{ok, {attribute, _, module, ModInfo}} ->
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ActualModuleStr =
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case ModInfo of
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%% Typical module name, single atom
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ActualModule when is_atom(ActualModule) ->
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atom_to_list(ActualModule);
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%% Packag-ized module name, list of atoms
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ActualModule when is_list(ActualModule) ->
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string:join([atom_to_list(P) ||
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P <- ActualModule], ".");
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%% Parameterized module name, single atom
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{ActualModule, _} when is_atom(ActualModule) ->
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atom_to_list(ActualModule);
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%% Parameterized and packagized module name, list of atoms
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{ActualModule, _} when is_list(ActualModule) ->
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string:join([atom_to_list(P) ||
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P <- ActualModule], ".")
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end,
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inspect_epp(Epp, Source, ActualModuleStr, Includes);
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{ok, {attribute, 1, file, {Module, 1}}} ->
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inspect_epp(Epp, Source, Module, Includes);
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{ok, {attribute, 1, file, {Source, 1}}} ->
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inspect_epp(Epp, Source, Module, Includes);
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{ok, {attribute, 1, file, {IncFile, 1}}} ->
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inspect_epp(Epp, Source, Module, [IncFile | Includes]);
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{eof, _} ->
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epp:close(Epp),
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{Module, Includes};
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_ ->
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inspect_epp(Epp, Source, Module, Includes)
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end.
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-spec needs_compile(file:filename(), file:filename(),
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[string()]) -> boolean().
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needs_compile(Source, Target, Hrls) ->
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TargetLastMod = filelib:last_modified(Target),
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lists:any(fun(I) -> TargetLastMod < filelib:last_modified(I) end,
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[Source] ++ Hrls).
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-spec internal_erl_compile(rebar_config:config(), file:filename(),
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file:filename(), list()) -> 'ok' | 'skipped'.
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internal_erl_compile(Config, Source, Outdir, ErlOpts) ->
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%% Determine the target name and includes list by inspecting the source file
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{Module, Hrls} = inspect(Source, include_path(Source, Config)),
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%% Construct the target filename
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Target = filename:join([Outdir | string:tokens(Module, ".")]) ++ ".beam",
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ok = filelib:ensure_dir(Target),
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%% If the file needs compilation, based on last mod date of includes or
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%% the target
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case needs_compile(Source, Target, Hrls) of
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true ->
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Opts = [{outdir, filename:dirname(Target)}] ++
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ErlOpts ++ [{i, "include"}, return],
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case compile:file(Source, Opts) of
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{ok, _Mod} ->
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ok;
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{ok, _Mod, Ws} ->
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rebar_base_compiler:ok_tuple(Config, Source, Ws);
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{error, Es, Ws} ->
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rebar_base_compiler:error_tuple(Config, Source,
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Es, Ws, Opts)
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end;
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false ->
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skipped
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end.
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-spec compile_mib(file:filename(), file:filename(),
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rebar_config:config()) -> 'ok'.
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compile_mib(Source, Target, Config) ->
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ok = rebar_utils:ensure_dir(Target),
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ok = rebar_utils:ensure_dir(filename:join("include", "dummy.hrl")),
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Opts = [{outdir, "priv/mibs"}, {i, ["priv/mibs"]}] ++
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rebar_config:get(Config, mib_opts, []),
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case snmpc:compile(Source, Opts) of
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{ok, _} ->
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Mib = filename:rootname(Target),
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ok = snmpc:mib_to_hrl(Mib),
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Hrl_filename = Mib ++ ".hrl",
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rebar_file_utils:mv(Hrl_filename, "include"),
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ok;
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{error, compilation_failed} ->
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?FAIL
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end.
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-spec compile_xrl(file:filename(), file:filename(),
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rebar_config:config()) -> 'ok'.
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compile_xrl(Source, Target, Config) ->
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Opts = [{scannerfile, Target} | rebar_config:get(Config, xrl_opts, [])],
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compile_xrl_yrl(Config, Source, Target, Opts, leex).
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-spec compile_yrl(file:filename(), file:filename(),
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rebar_config:config()) -> 'ok'.
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compile_yrl(Source, Target, Config) ->
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Opts = [{parserfile, Target} | rebar_config:get(Config, yrl_opts, [])],
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compile_xrl_yrl(Config, Source, Target, Opts, yecc).
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-spec compile_xrl_yrl(rebar_config:config(), file:filename(),
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file:filename(), list(), module()) -> 'ok'.
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compile_xrl_yrl(Config, Source, Target, Opts, Mod) ->
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case needs_compile(Source, Target, []) of
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true ->
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case Mod:file(Source, Opts ++ [{return, true}]) of
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{ok, _} ->
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ok;
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{ok, _Mod, Ws} ->
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rebar_base_compiler:ok_tuple(Config, Source, Ws);
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{error, Es, Ws} ->
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rebar_base_compiler:error_tuple(Config, Source,
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Es, Ws, Opts)
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end;
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false ->
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skipped
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end.
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gather_src([], Srcs) ->
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Srcs;
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gather_src([Dir|Rest], Srcs) ->
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gather_src(Rest, Srcs ++ rebar_utils:find_files(Dir, ".*\\.erl\$")).
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-spec dirs(file:filename()) -> [file:filename()].
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dirs(Dir) ->
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[F || F <- filelib:wildcard(filename:join([Dir, "*"])), filelib:is_dir(F)].
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-spec delete_dir(file:filename(), [string()]) -> 'ok' | {'error', atom()}.
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delete_dir(Dir, []) ->
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file:del_dir(Dir);
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delete_dir(Dir, Subdirs) ->
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lists:foreach(fun(D) -> delete_dir(D, dirs(D)) end, Subdirs),
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file:del_dir(Dir).
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-spec compile_priority(file:filename()) -> 'normal' | 'behaviour' |
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'callback' |
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'parse_transform'.
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compile_priority(File) ->
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case epp_dodger:parse_file(File) of
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{error, _} ->
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normal; % couldn't parse the file, default priority
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{ok, Trees} ->
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F2 = fun({tree,arity_qualifier,_,
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{arity_qualifier,{tree,atom,_,behaviour_info},
|
|
{tree,integer,_,1}}}, _) ->
|
|
behaviour;
|
|
({tree,arity_qualifier,_,
|
|
{arity_qualifier,{tree,atom,_,parse_transform},
|
|
{tree,integer,_,2}}}, _) ->
|
|
parse_transform;
|
|
(_, Acc) ->
|
|
Acc
|
|
end,
|
|
|
|
F = fun({tree, attribute, _,
|
|
{attribute, {tree, atom, _, export},
|
|
[{tree, list, _, {list, List, none}}]}}, Acc) ->
|
|
lists:foldl(F2, Acc, List);
|
|
({tree, attribute, _,
|
|
{attribute, {tree, atom, _, callback},_}}, _Acc) ->
|
|
callback;
|
|
(_, Acc) ->
|
|
Acc
|
|
end,
|
|
|
|
lists:foldl(F, normal, Trees)
|
|
end.
|
|
|
|
%%
|
|
%% Ensure all files in a list are present and abort if one is missing
|
|
%%
|
|
-spec check_files([file:filename()]) -> [file:filename()].
|
|
check_files(FileList) ->
|
|
[check_file(F) || F <- FileList].
|
|
|
|
check_file(File) ->
|
|
case filelib:is_regular(File) of
|
|
false -> ?ABORT("File ~p is missing, aborting\n", [File]);
|
|
true -> File
|
|
end.
|