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130 lines (114 loc) · 4.04 KB
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(*
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*)
(***********************************************************************)
(* flow shell is just a simple command-dispatching main *)
(***********************************************************************)
module FlowShell : sig
val main : unit -> unit
end = struct
(* normal commands *)
let commands =
[
AstCommand.command;
AutocompleteCommand.command;
AutofixCommand.command;
CheckCommands.CheckCommand.command;
CheckCommands.FocusCheckCommand.command;
CheckContentsCommand.command;
CodemodCommand.command;
ConfigCommand.command;
CoverageCommand.command;
BatchCoverageCommand.command;
CycleCommand.command;
GraphCommand.command;
DumpTypesCommand.command;
FindModuleCommand.command;
FixCommand.command;
ForceRecheckCommand.command;
GetDefCommand.command;
GleanCommand.command;
InitCommand.command;
LspCommand.command;
LsCommand.command;
SaveStateCommand.command;
ServerCommand.command;
StartCommand.command;
StopCommand.command;
TypeAtPosCommand.command;
VersionCommand.command;
]
@ Extra_commands.extra_commands ()
(* status commands, which need a list of other commands *)
module StatusCommand = StatusCommands.Status (struct
let commands = commands
end)
let commands = StatusCommand.command :: commands
module DefaultCommand = StatusCommands.Default (struct
let commands = commands
end)
let commands = DefaultCommand.command :: commands
module ShellCommand = ShellCompleteCommand.Command (struct
let commands = commands
end)
let commands = ShellCommand.command :: commands
let main () =
let default_command = DefaultCommand.command in
let argv = Array.to_list Sys.argv in
let (command, argv) =
match argv with
| [] -> failwith "Expected command"
| [_cmd] -> (default_command, [])
| _cmd :: next :: rest ->
let subcmd = String.lowercase_ascii next in
(try
let command = List.find (fun command -> CommandSpec.name command = subcmd) commands in
(command, rest)
with
| Not_found -> (default_command, next :: rest))
in
let command_string = CommandSpec.name command in
FlowEventLogger.set_command (Some command_string);
let init_id = Random_id.short_string () in
FlowEventLogger.init_flow_command ~init_id;
CommandUtils.run_command command argv
end
let _ =
(* A SIGPIPE signal happens when writing to a closed pipe (e.g. C-c, or piping to `head` which
exits after it prints enough lines). By default, SIGPIPE kills the program because this is a
sane behavior for most commands; it makes them stop processing input if they can't write it
anywhere.
We don't like being killed uncleanly like that. By ignoring SIGPIPE, the write() syscall that
normally would cause a SIGPIPE instead throws an EPIPE exception. We handle exceptions and
exit via Exit.exit instead. *)
let () = Sys_utils.set_signal Sys.sigpipe Sys.Signal_ignore in
let () = Exception.record_backtrace true in
let () = Random.self_init () in
let () = if Utils_js.in_flow_test then LoggingUtils.disable_logging () in
try
Daemon.check_entry_point ();
(* this call might not return *)
FlowShell.main ()
with
| SharedMem.Out_of_shared_memory as e ->
let e = Exception.wrap e in
let bt = Exception.get_backtrace_string e in
let msg =
Printf.sprintf
"Out of shared memory%s"
( if bt = "" then
bt
else
":\n" ^ bt
)
in
Exit.(exit ~msg Out_of_shared_memory)
| e ->
let e = Exception.wrap e in
let msg = Printf.sprintf "Unhandled exception: %s" (Exception.to_string e) in
Exit.(exit ~msg Unknown_error)
(* If we haven't exited yet, let's exit now for logging's sake *)
let _ = Exit.(exit No_error)