B0_action (b0.B0

type t

The type for actions.

type func = t -> B0_env.t -> args:B0_std.Cmd.t -> B0_std.Os.Exit.t

The type for action implementations.

A function that given the action, execution environment and command line arguments eventually specifies a way to exit.

val make : 
  ?store:B0_store.binding list ->
  ?packs:B0_pack.t list ->
  ?units:B0_unit.t list ->
  ?dyn_units:(args:B0_std.Cmd.t -> B0_unit.t list) ->
  ?doc:string ->
  ?meta:B0_meta.t ->
  string ->
  func ->
  t

make name func is an action named name implemented with action function func. units and packs are units and packs that must be built to run the action. store are store bindings that must be enforced in the build.

val make' : 
  ?store:B0_store.binding list ->
  ?packs:B0_pack.t list ->
  ?units:B0_unit.t list ->
  ?dyn_units:(args:B0_std.Cmd.t -> B0_unit.t list) ->
  ?doc:string ->
  ?meta:B0_meta.t ->
  string ->
  (t -> B0_env.t -> args:B0_std.Cmd.t -> (unit, string) Stdlib.result) ->
  t

make' is like make but with a function whose result is turned into an error code via exit_of_result.

val func : t -> func

func a is the action function.

val units : t -> B0_unit.t list

units a are the units that must build for running the action.

val dyn_units : t -> args:B0_std.Cmd.t -> B0_unit.t list

dyn_units a args are the dynamic units of the action.

FIXME. This is a temporary hack.

val packs : t -> B0_pack.t list

packs a are the packs that must build for running the action.

val store : t -> B0_store.binding list

store a are the store bindings to enforce on the build.

Shortcuts

val exit_of_result : (unit, string) Stdlib.result -> B0_std.Os.Exit.t

exit_of_result v exits with B0_cli.Exit.ok if v is Ok () and logs the Error and exits with B0_cli.Exit.some_error if v is Error _.

val exit_of_result' : 
  (B0_std.Os.Exit.t, string) Stdlib.result ->
  B0_std.Os.Exit.t

exit_of_result' v exits with e if v is Ok e and logs the Error and exits with B0_cli.Exit.some_error if v is Error _.

Action functions for script execution

val exec_file : 
  ?env:B0_std.Os.Env.assignments ->
  ?cwd:B0_std.Fpath.t ->
  B0_std.Cmd.t ->
  func

exec_file env cmd executes cmd using the scope directory is used as the default cwd and to resolve file if it is relative. This signature is twisted so that you can simply write:

let myscript =
  B0_action.make "myscript" @@
  B0_action.exec_file' ~/"scripts/myscript"

val exec_cmd : 
  ?env:B0_std.Os.Env.assignments ->
  ?cwd:B0_std.Fpath.t ->
  B0_env.t ->
  B0_std.Cmd.t ->
  B0_std.Os.Exit.t

exec_tool tool cmd executes cmd. The scope directory is used as the default cwd. The tool of cmd is looked up using B0_env.get_cmd, if that fails the error is logged and we exit we and exits with B0_cli.Exit.some_error.

Command line interaction

Use B0_cli to parse actions arguments and B0_cli.Exit for exit codes. Given a suitable Cmdliner term this function can be used to implement the action's command.

TODO Add a quick getopt interface.

val of_cmdliner_cmd : 
  ?store:B0_store.binding list ->
  ?packs:B0_pack.t list ->
  ?units:B0_unit.t list ->
  ?dyn_units:(args:B0_std.Cmd.t -> B0_unit.t list) ->
  ?doc:string ->
  ?meta:B0_meta.t ->
  string ->
  (t -> B0_env.t -> B0_std.Os.Exit.t Cmdliner.Cmd.t) ->
  t

of_cli_cmd name cmd is like make is an action from the Cmdliner command cmd. See also eval_cmdliner_term.

Note. The command is under a thunk to avoid toplevel inits. This entails a bit of repetition for name and doc but you can access those of the action in the thunk to define the cmdliner command.

val eval_cmdliner_term : 
  ?man_xrefs:Cmdliner.Manpage.xref list ->
  ?man:Cmdliner.Manpage.block list ->
  ?envs:Cmdliner.Cmd.Env.info list ->
  ?exits:Cmdliner.Cmd.Exit.info list ->
  ?sdocs:string ->
  ?docs:string ->
  ?doc:string ->
  ?version:string ->
  t ->
  B0_env.t ->
  B0_std.Os.Exit.t Cmdliner.Term.t ->
  args:B0_std.Cmd.t ->
  B0_std.Os.Exit.t

eval act env cmd t defines a action command by evaluating the cmdliner term t with arguments cmd. The menagerie of optional parameters define a Cmdliner.Term.info value for the term, see the docs there. By default doc is derived from the action's doc string and exits is B0_cli.Exit.infos.

B0 definition API

include B0_def.S with type t := t

val mangle_basename : string -> string

val define : ?doc:string -> ?meta:B0_meta.t -> string -> B0_def.def

val def_kind : string

val def : t -> B0_def.def

val name : t -> string

val basename : t -> string

val doc : t -> string

val equal : t -> t -> bool

val compare : t -> t -> int

val meta : t -> B0_meta.t

val mem_meta : 'a B0_meta.key -> t -> bool

val has_tag : bool B0_meta.key -> t -> bool

val find_meta : 'a B0_meta.key -> t -> 'a option

val find_or_default_meta : 'a B0_meta.key -> t -> 'a

val get_meta : 'a B0_meta.key -> t -> ('a, string) Stdlib.result

val add : t -> unit

val fold : (t -> 'a -> 'a) -> 'a -> 'a

val list : unit -> t list

val find : string -> t option

val get : string -> t

val get_or_suggest : string -> (t, t list) Stdlib.result

val get_or_hint : string -> (t, string) Stdlib.result

val get_list_or_hint : 
  all_if_empty:bool ->
  string list ->
  (t list, string) Stdlib.result

val scope_path : t -> string list

val in_root_scope : t -> bool

val in_current_scope : t -> bool

val scope_dir : t -> B0_std.Fpath.t option

val scope_dir' : t -> (B0_std.Fpath.t, string) Stdlib.result

val in_scope_dir : t -> B0_std.Fpath.t -> B0_std.Fpath.t option

val in_scope_dir' : 
  t ->
  B0_std.Fpath.t ->
  (B0_std.Fpath.t, string) Stdlib.result

val pp_name_str : string B0_std.Fmt.t

val pp_name : t B0_std.Fmt.t

val pp_doc : t B0_std.Fmt.t

val pp_synopsis : t B0_std.Fmt.t

val pp : t B0_std.Fmt.t

module Set : sig ... end

module Map : sig ... end