mirror of
https://github.com/processone/ejabberd.git
synced 2024-12-26 17:38:45 +01:00
402 lines
11 KiB
Bash
Executable File
402 lines
11 KiB
Bash
Executable File
#!/usr/bin/env escript
|
|
%% -*- erlang -*-
|
|
|
|
-record(state, {run_hooks = dict:new(),
|
|
run_fold_hooks = dict:new(),
|
|
hooked_funs = dict:new(),
|
|
mfas = dict:new(),
|
|
specs = dict:new(),
|
|
module :: module(),
|
|
file :: filename:filename()}).
|
|
|
|
main(Paths) ->
|
|
State =
|
|
fold_beams(
|
|
fun(File0, Tree, Acc0) ->
|
|
BareName = filename:rootname(filename:basename(File0)),
|
|
Mod = list_to_atom(BareName),
|
|
File = BareName ++ ".erl",
|
|
Acc1 = Acc0#state{file = File, module = Mod},
|
|
erl_syntax_lib:fold(
|
|
fun(Form, Acc) ->
|
|
case erl_syntax:type(Form) of
|
|
application ->
|
|
case erl_syntax_lib:analyze_application(Form) of
|
|
{ejabberd_hooks, {run, N}}
|
|
when N == 2; N == 3 ->
|
|
analyze_run_hook(Form, Acc);
|
|
{ejabberd_hooks, {run_fold, N}}
|
|
when N == 3; N == 4 ->
|
|
analyze_run_fold_hook(Form, Acc);
|
|
{ejabberd_hooks, {add, N}}
|
|
when N == 4; N == 5 ->
|
|
analyze_run_fun(Form, Acc);
|
|
{gen_iq_handler, {add_iq_handler, N}}
|
|
when N == 5; N == 6 ->
|
|
analyze_iq_handler(Form, Acc);
|
|
_ ->
|
|
Acc
|
|
end;
|
|
attribute ->
|
|
case catch erl_syntax_lib:analyze_attribute(Form) of
|
|
{spec, _} ->
|
|
analyze_type_spec(Form, Acc);
|
|
_ ->
|
|
Acc
|
|
end;
|
|
_ ->
|
|
Acc
|
|
end
|
|
end, Acc1, Tree)
|
|
end, #state{}, Paths),
|
|
report_orphaned_funs(State),
|
|
RunDeps = build_deps(State#state.run_hooks, State#state.hooked_funs),
|
|
RunFoldDeps = build_deps(State#state.run_fold_hooks, State#state.hooked_funs),
|
|
emit_module(RunDeps, RunFoldDeps, State#state.specs, hooks_type_test).
|
|
|
|
analyze_run_hook(Form, State) ->
|
|
[Hook|Tail] = erl_syntax:application_arguments(Form),
|
|
case atom_value(Hook, State) of
|
|
undefined ->
|
|
State;
|
|
HookName ->
|
|
Args = case Tail of
|
|
[_Host, Args0] -> Args0;
|
|
[Args0] ->
|
|
Args0
|
|
end,
|
|
Arity = erl_syntax:list_length(Args),
|
|
Hooks = dict:store({HookName, Arity},
|
|
{State#state.file, erl_syntax:get_pos(Hook)},
|
|
State#state.run_hooks),
|
|
State#state{run_hooks = Hooks}
|
|
end.
|
|
|
|
analyze_run_fold_hook(Form, State) ->
|
|
[Hook|Tail] = erl_syntax:application_arguments(Form),
|
|
case atom_value(Hook, State) of
|
|
undefined ->
|
|
State;
|
|
HookName ->
|
|
Args = case Tail of
|
|
[_Host, _Val, Args0] -> Args0;
|
|
[_Val, Args0] -> Args0
|
|
end,
|
|
Arity = erl_syntax:list_length(Args) + 1,
|
|
Hooks = dict:store({HookName, Arity},
|
|
{State#state.file, erl_syntax:get_pos(Form)},
|
|
State#state.run_fold_hooks),
|
|
State#state{run_fold_hooks = Hooks}
|
|
end.
|
|
|
|
analyze_run_fun(Form, State) ->
|
|
[Hook|Tail] = erl_syntax:application_arguments(Form),
|
|
case atom_value(Hook, State) of
|
|
undefined ->
|
|
State;
|
|
HookName ->
|
|
{Module, Fun, Seq} = case Tail of
|
|
[_Host, M, F, S] ->
|
|
{M, F, S};
|
|
[M, F, S] ->
|
|
{M, F, S}
|
|
end,
|
|
ModName = module_name(Module, State),
|
|
FunName = atom_value(Fun, State),
|
|
if ModName /= undefined, FunName /= undefined ->
|
|
Funs = dict:append(
|
|
HookName,
|
|
{ModName, FunName, integer_value(Seq, State),
|
|
{State#state.file, erl_syntax:get_pos(Form)}},
|
|
State#state.hooked_funs),
|
|
State#state{hooked_funs = Funs};
|
|
true ->
|
|
State
|
|
end
|
|
end.
|
|
|
|
analyze_iq_handler(Form, State) ->
|
|
[_Component, _Host, _NS, Module, Function|_] =
|
|
erl_syntax:application_arguments(Form),
|
|
Mod = module_name(Module, State),
|
|
Fun = atom_value(Function, State),
|
|
if Mod /= undefined, Fun /= undefined ->
|
|
code:ensure_loaded(Mod),
|
|
case erlang:function_exported(Mod, Fun, 1) of
|
|
false ->
|
|
err("~s:~p: Error: function ~s:~s/1 is registered "
|
|
"as iq handler, but is not exported~n",
|
|
[State#state.file, erl_syntax:get_pos(Form),
|
|
Mod, Fun]);
|
|
true ->
|
|
ok
|
|
end;
|
|
true ->
|
|
ok
|
|
end,
|
|
State.
|
|
|
|
analyze_type_spec(Form, State) ->
|
|
case catch erl_syntax:revert(Form) of
|
|
{attribute, _, spec, {{F, A}, _}} ->
|
|
Specs = dict:store({State#state.module, F, A},
|
|
{Form, State#state.file},
|
|
State#state.specs),
|
|
State#state{specs = Specs};
|
|
_ ->
|
|
State
|
|
end.
|
|
|
|
build_deps(Hooks, Hooked) ->
|
|
dict:fold(
|
|
fun({Hook, Arity}, {_File, _LineNo} = Meta, Deps) ->
|
|
case dict:find(Hook, Hooked) of
|
|
{ok, Funs} ->
|
|
ExportedFuns =
|
|
lists:flatmap(
|
|
fun({M, F, Seq, {FunFile, FunLineNo} = FunMeta}) ->
|
|
code:ensure_loaded(M),
|
|
case erlang:function_exported(M, F, Arity) of
|
|
false ->
|
|
err("~s:~p: Error: function ~s:~s/~p "
|
|
"is hooked on ~s/~p, but is not "
|
|
"exported~n",
|
|
[FunFile, FunLineNo, M, F,
|
|
Arity, Hook, Arity]),
|
|
[];
|
|
true ->
|
|
[{{M, F, Arity}, Seq, FunMeta}]
|
|
end
|
|
end, Funs),
|
|
dict:append_list({Hook, Arity, Meta}, ExportedFuns, Deps);
|
|
error ->
|
|
%% log("~s:~p: Warning: hook ~p/~p is unused~n",
|
|
%% [_File, _LineNo, Hook, Arity]),
|
|
dict:append_list({Hook, Arity, Meta}, [], Deps)
|
|
end
|
|
end, dict:new(), Hooks).
|
|
|
|
report_orphaned_funs(State) ->
|
|
dict:map(
|
|
fun(Hook, Funs) ->
|
|
lists:foreach(
|
|
fun({M, F, _, {File, Line}}) ->
|
|
case get_fun_arities(M, F, State) of
|
|
[] ->
|
|
err("~s:~p: Error: function ~s:~s is "
|
|
"hooked on hook ~s, but is not exported~n",
|
|
[File, Line, M, F, Hook]);
|
|
Arities ->
|
|
case lists:any(
|
|
fun(Arity) ->
|
|
dict:is_key({Hook, Arity},
|
|
State#state.run_hooks) orelse
|
|
dict:is_key({Hook, Arity},
|
|
State#state.run_fold_hooks);
|
|
(_) ->
|
|
false
|
|
end, Arities) of
|
|
false ->
|
|
Arity = hd(Arities),
|
|
err("~s:~p: Error: function ~s:~s/~p is hooked"
|
|
" on non-existent hook ~s/~p~n",
|
|
[File, Line, M, F, Arity, Hook, Arity]);
|
|
true ->
|
|
ok
|
|
end
|
|
end
|
|
end, Funs)
|
|
end, State#state.hooked_funs).
|
|
|
|
get_fun_arities(Mod, Fun, _State) ->
|
|
proplists:get_all_values(Fun, Mod:module_info(exports)).
|
|
|
|
module_name(Form, State) ->
|
|
try
|
|
Name = erl_syntax:macro_name(Form),
|
|
'MODULE' = erl_syntax:variable_name(Name),
|
|
State#state.module
|
|
catch _:_ ->
|
|
atom_value(Form, State)
|
|
end.
|
|
|
|
atom_value(Form, State) ->
|
|
case erl_syntax:type(Form) of
|
|
atom ->
|
|
erl_syntax:atom_value(Form);
|
|
_ ->
|
|
log("~s:~p: Warning: not an atom: ~s~n",
|
|
[State#state.file,
|
|
erl_syntax:get_pos(Form),
|
|
erl_prettypr:format(Form)]),
|
|
undefined
|
|
end.
|
|
|
|
integer_value(Form, State) ->
|
|
case erl_syntax:type(Form) of
|
|
integer ->
|
|
erl_syntax:integer_value(Form);
|
|
_ ->
|
|
log("~s:~p: Warning: not an integer: ~s~n",
|
|
[State#state.file,
|
|
erl_syntax:get_pos(Form),
|
|
erl_prettypr:format(Form)]),
|
|
0
|
|
end.
|
|
|
|
emit_module(RunDeps, RunFoldDeps, Specs, Module) ->
|
|
File = filename:join(["src", Module]) ++ ".erl",
|
|
try
|
|
{ok, Fd} = file:open(File, [write]),
|
|
write(Fd,
|
|
"%% Generated automatically~n"
|
|
"%% DO NOT EDIT: run `make hooks` instead~n~n", []),
|
|
write(Fd, "-module(~s).~n", [Module]),
|
|
write(Fd, "-compile(nowarn_unused_vars).~n", []),
|
|
write(Fd, "-dialyzer(no_return).~n~n", []),
|
|
emit_export(Fd, RunDeps, "run hooks"),
|
|
emit_export(Fd, RunFoldDeps, "run_fold hooks"),
|
|
emit_run_hooks(Fd, RunDeps, Specs),
|
|
emit_run_fold_hooks(Fd, RunFoldDeps, Specs),
|
|
file:close(Fd),
|
|
log("Module written to file ~s~n", [File])
|
|
catch _:{badmatch, {error, Reason}} ->
|
|
err("writing to ~s failed: ~s", [File, file:format_error(Reason)])
|
|
end.
|
|
|
|
emit_run_hooks(Fd, Deps, Specs) ->
|
|
DepsList = lists:sort(dict:to_list(Deps)),
|
|
lists:foreach(
|
|
fun({{Hook, Arity, {File, LineNo}}, Funs}) ->
|
|
emit_specs(Fd, Funs, Specs),
|
|
write(Fd, "%% called at ~s:~p~n", [File, LineNo]),
|
|
Args = string:join(
|
|
[[N] || N <- lists:sublist(lists:seq($A, $Z), Arity)],
|
|
", "),
|
|
write(Fd, "~s(~s) ->~n ", [Hook, Args]),
|
|
Calls = [io_lib:format("_ = ~s:~s(~s)", [Mod, Fun, Args])
|
|
|| {{Mod, Fun, _}, _Seq, _} <- lists:keysort(2, Funs)],
|
|
write(Fd, "~s.~n~n",
|
|
[string:join(Calls ++ ["ok"], ",\n ")])
|
|
end, DepsList).
|
|
|
|
emit_run_fold_hooks(Fd, Deps, Specs) ->
|
|
DepsList = lists:sort(dict:to_list(Deps)),
|
|
lists:foreach(
|
|
fun({{Hook, Arity, {File, LineNo}}, []}) ->
|
|
write(Fd, "%% called at ~s:~p~n", [File, LineNo]),
|
|
Args = ["Acc"|lists:duplicate(Arity - 1, "_")],
|
|
write(Fd, "~s(~s) -> Acc.~n~n", [Hook, string:join(Args, ", ")]);
|
|
({{Hook, Arity, {File, LineNo}}, Funs}) ->
|
|
emit_specs(Fd, Funs, Specs),
|
|
write(Fd, "%% called at ~s:~p~n", [File, LineNo]),
|
|
Args = [[N] || N <- lists:sublist(lists:seq($A, $Z), Arity - 1)],
|
|
write(Fd, "~s(~s) ->~n ", [Hook, string:join(["Acc0"|Args], ", ")]),
|
|
{Calls, _} = lists:mapfoldl(
|
|
fun({{Mod, Fun, _}, _Seq, _}, N) ->
|
|
Args1 = ["Acc" ++ integer_to_list(N)|Args],
|
|
{io_lib:format("Acc~p = ~s:~s(~s)",
|
|
[N+1, Mod, Fun,
|
|
string:join(Args1, ", ")]),
|
|
N + 1}
|
|
end, 0, lists:keysort(2, Funs)),
|
|
write(Fd, "~s,~n", [string:join(Calls, ",\n ")]),
|
|
write(Fd, " Acc~p.~n~n", [length(Funs)])
|
|
end, DepsList).
|
|
|
|
emit_export(Fd, Deps, Comment) ->
|
|
DepsList = lists:sort(dict:to_list(Deps)),
|
|
Exports = lists:map(
|
|
fun({{Hook, Arity, _}, _}) ->
|
|
io_lib:format("~s/~p", [Hook, Arity])
|
|
end, DepsList),
|
|
write(Fd, "%% ~s~n-export([~s]).~n~n",
|
|
[Comment, string:join(Exports, ",\n ")]).
|
|
|
|
emit_specs(Fd, Funs, Specs) ->
|
|
lists:foreach(
|
|
fun({{M, _, _} = MFA, _, _}) ->
|
|
case dict:find(MFA, Specs) of
|
|
{ok, {Form, _File}} ->
|
|
Lines = string:tokens(erl_syntax:get_ann(Form), "\n"),
|
|
lists:foreach(
|
|
fun("%" ++ _) ->
|
|
ok;
|
|
("-spec" ++ Spec) ->
|
|
write(Fd, "%% -spec ~p:~s~n",
|
|
[M, string:strip(Spec, left)]);
|
|
(Line) ->
|
|
write(Fd, "%% ~s~n", [Line])
|
|
end, Lines);
|
|
error ->
|
|
ok
|
|
end
|
|
end, lists:keysort(2, Funs)).
|
|
|
|
fold_beams(Fun, State, Paths) ->
|
|
Paths1 = fold_paths(Paths),
|
|
Total = length(Paths1),
|
|
{_, State1} =
|
|
lists:foldl(
|
|
fun(File, {I, Acc}) ->
|
|
io:format("Progress: ~B% (~B/~B)\r",
|
|
[round(I*100/Total), I, Total]),
|
|
case is_elixir_beam(File) of
|
|
true -> {I+1, Acc};
|
|
false ->
|
|
AbsCode = get_code_from_beam(File),
|
|
Acc2 = lists:foldl(
|
|
fun(Form, Acc1) ->
|
|
Fun(File, Form, Acc1)
|
|
end, Acc, AbsCode),
|
|
{I+1, Acc2}
|
|
end
|
|
end, {0, State}, Paths1),
|
|
State1.
|
|
|
|
fold_paths(Paths) ->
|
|
lists:flatmap(
|
|
fun(Path) ->
|
|
case filelib:is_dir(Path) of
|
|
true ->
|
|
Beams = lists:reverse(
|
|
filelib:fold_files(
|
|
Path, ".+\.beam\$", false,
|
|
fun(File, Acc) ->
|
|
[File|Acc]
|
|
end, [])),
|
|
case Beams of
|
|
[] -> ok;
|
|
_ -> code:add_path(Path)
|
|
end,
|
|
Beams;
|
|
false ->
|
|
[Path]
|
|
end
|
|
end, Paths).
|
|
|
|
is_elixir_beam(File) ->
|
|
case filename:basename(File) of
|
|
"Elixir" ++ _ -> true;
|
|
_ -> false
|
|
end.
|
|
|
|
get_code_from_beam(File) ->
|
|
try
|
|
{ok, {_, List}} = beam_lib:chunks(File, [abstract_code]),
|
|
{_, {raw_abstract_v1, Forms}} = lists:keyfind(abstract_code, 1, List),
|
|
Forms
|
|
catch _:{badmatch, _} ->
|
|
err("no abstract code found in ~s~n", [File])
|
|
end.
|
|
|
|
log(Format, Args) ->
|
|
io:format(standard_io, Format, Args).
|
|
|
|
err(Format, Args) ->
|
|
io:format(standard_error, "Error: " ++ Format, Args),
|
|
halt(1).
|
|
|
|
write(Fd, Format, Args) ->
|
|
file:write(Fd, io_lib:format(Format, Args)).
|