packaging for obs.osmocom.org, based on https://salsa.debian.org/erlang-team/packages/rebar3
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rebar3/src/rebar_base_compiler.erl

286 lines
12 KiB

%% -*- erlang-indent-level: 4;indent-tabs-mode: nil -*-
%% ex: ts=4 sw=4 et
%% -------------------------------------------------------------------
%%
%% rebar: Erlang Build Tools
%%
%% Copyright (c) 2009 Dave Smith (dizzyd@dizzyd.com)
%%
%% Permission is hereby granted, free of charge, to any person obtaining a copy
%% of this software and associated documentation files (the "Software"), to deal
%% in the Software without restriction, including without limitation the rights
%% to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
%% copies of the Software, and to permit persons to whom the Software is
%% furnished to do so, subject to the following conditions:
%%
%% The above copyright notice and this permission notice shall be included in
%% all copies or substantial portions of the Software.
%%
%% THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
%% IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
%% FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
%% AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
%% LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
%% OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
%% THE SOFTWARE.
%% -------------------------------------------------------------------
-module(rebar_base_compiler).
-include("rebar.hrl").
-export([run/4,
run/7,
run/8,
ok_tuple/2,
error_tuple/4,
report/1,
maybe_report/1,
format_error_source/2]).
-type desc() :: term().
-type loc() :: {line(), col()} | line().
-type line() :: integer().
-type col() :: integer().
-type err_or_warn() :: {module(), desc()} | {loc(), module(), desc()}.
-type compile_fn_ret() :: ok | {ok, [string()]} | skipped | term().
-type compile_fn() :: fun((file:filename(), [{_,_}] | rebar_dict()) -> compile_fn_ret()).
-type compile_fn3() :: fun((file:filename(), file:filename(), [{_,_}] | rebar_dict())
-> compile_fn_ret()).
-type error_tuple() :: {error, [string()], [string()]}.
-export_type([compile_fn/0, compile_fn_ret/0, error_tuple/0]).
%% ===================================================================
%% Public API
%% ===================================================================
%% @doc Runs a compile job, applying `compile_fn()' to all files,
%% starting with `First' files, and then `RestFiles'.
-spec run(rebar_dict() | [{_,_}] , [First], [Next], compile_fn()) ->
compile_fn_ret() when
First :: file:filename(),
Next :: file:filename().
run(Config, FirstFiles, RestFiles, CompileFn) ->
%% Compile the first files in sequence
compile_each(FirstFiles++RestFiles, Config, CompileFn).
%% @doc Runs a compile job, applying `compile_fn3()' to all files,
%% starting with `First' files, and then the other content of `SourceDir'.
%% Files looked for are those ending in `SourceExt'. Results of the
%% compilation are put in `TargetDir' with the base file names
%% postfixed with `SourceExt'.
-spec run(rebar_dict() | [{_,_}] , [First], SourceDir, SourceExt,
TargetDir, TargetExt, compile_fn3()) -> compile_fn_ret() when
First :: file:filename(),
SourceDir :: file:filename(),
TargetDir :: file:filename(),
SourceExt :: string(),
TargetExt :: string().
run(Config, FirstFiles, SourceDir, SourceExt, TargetDir, TargetExt,
Compile3Fn) ->
run(Config, FirstFiles, SourceDir, SourceExt, TargetDir, TargetExt,
Compile3Fn, [check_last_mod]).
%% @doc Runs a compile job, applying `compile_fn3()' to all files,
%% starting with `First' files, and then the other content of `SourceDir'.
%% Files looked for are those ending in `SourceExt'. Results of the
%% compilation are put in `TargetDir' with the base file names
%% postfixed with `SourceExt'.
%% Additional compile options can be passed in the last argument as
%% a proplist.
-spec run(rebar_dict() | [{_,_}] , [First], SourceDir, SourceExt,
TargetDir, TargetExt, compile_fn3(), [term()]) -> compile_fn_ret() when
First :: file:filename(),
SourceDir :: file:filename(),
TargetDir :: file:filename(),
SourceExt :: string(),
TargetExt :: string().
run(Config, FirstFiles, SourceDir, SourceExt0, TargetDir, TargetExt,
Compile3Fn, Opts) ->
%% Convert simple extension to proper regex.
%% If the extension has a leading dot (e.g.: `.peg')
%% we escape it.
%% Otherwise, if the extension doesn't have a leading dot
%% we add it ourselves (e.g.: `peg' -> `.peg')
SourceExt = case SourceExt0 of
[$.|_Ext] -> SourceExt0;
_ -> [$.] ++ SourceExt0
end,
SourceExtRe = "^(?!\\._).*\\" ++ SourceExt ++ [$$],
Recursive = proplists:get_value(recursive, Opts, true),
%% Find all possible source files
FoundFiles = rebar_utils:find_files(SourceDir, SourceExtRe, Recursive),
%% Remove first files from found files
RestFiles = [Source || Source <- FoundFiles,
not lists:member(Source, FirstFiles)],
%% Check opts for flag indicating that compile should check lastmod
CheckLastMod = proplists:get_bool(check_last_mod, Opts),
run(Config, FirstFiles, RestFiles,
fun(S, C) ->
Target = target_file(S, SourceExt,
TargetDir, TargetExt),
simple_compile_wrapper(S, Target, Compile3Fn, C, CheckLastMod)
end).
%% @doc Format good compiler results with warnings to work with
%% module internals. Assumes that warnings are not treated as errors.
-spec ok_tuple(file:filename(), [string()]) -> {ok, [string()]}.
ok_tuple(Source, Ws) ->
{ok, format_warnings(Source, Ws)}.
%% @doc format error and warning strings for a given source file
%% according to user preferences.
-spec error_tuple(file:filename(), [Err], [Warn], rebar_dict() | [{_,_}]) ->
error_tuple() when
Err :: string(),
Warn :: string().
error_tuple(Source, Es, Ws, Opts) ->
{error, format_errors(Source, Es),
format_warnings(Source, Ws, Opts)}.
%% @doc from a given path, and based on the user-provided options,
%% format the file path according to the preferences.
-spec format_error_source(file:filename(), rebar_dict() | [{_,_}]) ->
file:filename().
format_error_source(Path, Opts) ->
rebar_dir:format_source_file_name(Path, Opts).
%% ===================================================================
%% Internal functions
%% ===================================================================
%% @private if a check for last modifications is required, do the verification
%% and possibly skip the compile job.
-spec simple_compile_wrapper(Source, Target, compile_fn3(), [{_,_}] | rebar_dict(), boolean()) -> compile_fn_ret() when
Source :: file:filename(),
Target :: file:filename().
simple_compile_wrapper(Source, Target, Compile3Fn, Config, false) ->
Compile3Fn(Source, Target, Config);
simple_compile_wrapper(Source, Target, Compile3Fn, Config, true) ->
case filelib:last_modified(Target) < filelib:last_modified(Source) of
true ->
Compile3Fn(Source, Target, Config);
false ->
skipped
end.
%% @private take a basic source set of file fragments and a target location,
%% create a file path and name for a compile artifact.
-spec target_file(SourceFile, SourceExt, TargetDir, TargetExt) -> File when
SourceFile :: file:filename(),
TargetDir :: file:filename(),
SourceExt :: string(),
TargetExt :: string(),
File :: file:filename().
target_file(SourceFile, SourceExt, TargetDir, TargetExt) ->
%% BaseFile = remove_common_path(SourceFile, SourceDir),
filename:join([TargetDir, filename:basename(SourceFile, SourceExt) ++ TargetExt]).
%% @private runs the compile function `CompileFn' on every file
%% passed internally, along with the related project configuration.
%% If any errors are encountered, they're reported to stdout.
-spec compile_each([file:filename()], Config, CompileFn) -> Ret | no_return() when
Config :: [{_,_}] | rebar_dict(),
CompileFn :: compile_fn(),
Ret :: compile_fn_ret().
compile_each([], _Config, _CompileFn) ->
ok;
compile_each([Source | Rest], Config, CompileFn) ->
case CompileFn(Source, Config) of
ok ->
?DEBUG("~tsCompiled ~ts", [rebar_utils:indent(1), filename:basename(Source)]);
{ok, Warnings} ->
report(Warnings),
?DEBUG("~tsCompiled ~ts", [rebar_utils:indent(1), filename:basename(Source)]);
skipped ->
?DEBUG("~tsSkipped ~ts", [rebar_utils:indent(1), filename:basename(Source)]);
Error ->
NewSource = format_error_source(Source, Config),
?ERROR("Compiling ~ts failed", [NewSource]),
maybe_report(Error),
?DEBUG("Compilation failed: ~p", [Error]),
?ABORT
end,
compile_each(Rest, Config, CompileFn).
%% @private Formats and returns errors ready to be output.
-spec format_errors(string(), [err_or_warn()]) -> [string()].
format_errors(Source, Errors) ->
format_errors(Source, "", Errors).
%% @private Formats and returns warning strings ready to be output.
-spec format_warnings(string(), [err_or_warn()]) -> [string()].
format_warnings(Source, Warnings) ->
format_warnings(Source, Warnings, []).
%% @private Formats and returns warnings; chooses the distinct format they
%% may have based on whether `warnings_as_errors' option is on.
-spec format_warnings(string(), [err_or_warn()], rebar_dict() | [{_,_}]) -> [string()].
format_warnings(Source, Warnings, Opts) ->
%% `Opts' can be passed in both as a list or a dictionary depending
%% on whether the first call to rebar_erlc_compiler was done with
%% the type `rebar_dict()' or `rebar_state:t()'.
LookupFn = if is_list(Opts) -> fun lists:member/2
; true -> fun dict:is_key/2
end,
Prefix = case LookupFn(warnings_as_errors, Opts) of
true -> "";
false -> "Warning: "
end,
format_errors(Source, Prefix, Warnings).
%% @private output compiler errors if they're judged to be reportable.
-spec maybe_report(Reportable | term()) -> ok when
Reportable :: {{error, error_tuple()}, Source} | error_tuple() | ErrProps,
ErrProps :: [{error, string()} | Source, ...],
Source :: {source, string()}.
maybe_report({{error, {error, _Es, _Ws}=ErrorsAndWarnings}, {source, _}}) ->
maybe_report(ErrorsAndWarnings);
maybe_report([{error, E}, {source, S}]) ->
report(["unexpected error compiling " ++ S, io_lib:fwrite("~n~p", [E])]);
maybe_report({error, Es, Ws}) ->
report(Es),
report(Ws);
maybe_report(_) ->
ok.
%% @private Outputs a bunch of strings, including a newline
-spec report([string()]) -> ok.
report(Messages) ->
lists:foreach(fun(Msg) -> io:format("~ts~n", [Msg]) end, Messages).
%% private format compiler errors into proper outputtable strings
-spec format_errors(_, Extra, [err_or_warn()]) -> [string()] when
Extra :: string().
format_errors(_MainSource, Extra, Errors) ->
[[format_error(Source, Extra, Desc) || Desc <- Descs]
|| {Source, Descs} <- Errors].
%% @private format compiler errors into proper outputtable strings
-spec format_error(file:filename(), Extra, err_or_warn()) -> string() when
Extra :: string().
format_error(Source, Extra, {Line, Mod=epp, Desc={include,lib,File}}) ->
%% Special case for include file errors, overtaking the default one
BaseDesc = Mod:format_error(Desc),
Friendly = case filename:split(File) of
[Lib, "include", _] ->
io_lib:format("; Make sure ~s is in your app "
"file's 'applications' list", [Lib]);
_ ->
""
end,
FriendlyDesc = BaseDesc ++ Friendly,
?FMT("~ts:~w: ~ts~ts~n", [Source, Line, Extra, FriendlyDesc]);
format_error(Source, Extra, {{Line, Column}, Mod, Desc}) ->
ErrorDesc = Mod:format_error(Desc),
?FMT("~ts:~w:~w: ~ts~ts~n", [Source, Line, Column, Extra, ErrorDesc]);
format_error(Source, Extra, {Line, Mod, Desc}) ->
ErrorDesc = Mod:format_error(Desc),
?FMT("~ts:~w: ~ts~ts~n", [Source, Line, Extra, ErrorDesc]);
format_error(Source, Extra, {Mod, Desc}) ->
ErrorDesc = Mod:format_error(Desc),
?FMT("~ts: ~ts~ts~n", [Source, Extra, ErrorDesc]).