module Logic_typing: sig
.. end
Logic typing and logic environment.
Consult the Plugin Development Guide for additional details.
module Lenv: sig
.. end
Local logic environment
type
typing_context = {
}
val register_behavior_extension : string ->
(typing_context:typing_context ->
loc:Cil_types.location ->
Cil_types.funbehavior -> Logic_ptree.lexpr list -> unit) ->
unit
register_behavior_bextension name f
registers a typing function f
to
be used to type clause with name name
.
This function may change the funbehavior in place.
Here is a basic example:
let foo_typer ~typing_context ~loc bhv ps =
match ps with p::[] ->
bhv.b_extended <- ("FOO",42,
Logic_const.new_predicate
(typing_context.type_predicate
(typing_context.post_state Normal)
p)
)
::bhv.b_extended
| _ -> typing_context.error loc "expecting a predicate after keyword FOO"
let () = register_behavior_extension "FOO" foo_typer
Since Carbon-20101201
module Make: functor (
C
:
sig
end
) ->
sig
.. end
val append_old_and_post_labels : Lenv.t -> Lenv.t
append the Old label in the environment
val append_here_label : Lenv.t -> Lenv.t
appends the Here label in the environment
val append_pre_label : pre_is_old:bool -> Lenv.t -> Lenv.t
appends the "Pre" label in the environment
when pre_is_old
is true, it adds it has a synonym for "Old".
(the latter should be set when typing function contracts)
val add_var : string -> Cil_types.logic_var -> Lenv.t -> Lenv.t
adds a given variable in local environment.
val add_result : Lenv.t -> Cil_types.logic_type -> Lenv.t
add \result
in the environment.
val enter_post_state : Lenv.t -> Cil_types.termination_kind -> Lenv.t
enter a given post-state.
val post_state_env : Cil_types.termination_kind -> Cil_types.logic_type -> Lenv.t
enter a given post-state and put \result
in the env.
NB: if the kind of the post-state is neither Normal
nor Returns
,
this is not a normal ACSL environment. Use with caution.