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|
module Make (Storage : Management.Physical.S) = struct
module Ops = Manipulation.Make (Storage)
type error =
| ParseError of string
| ManipulationError of Error.t
| ConversionError of string
let sexp_of_error e =
let open Sexplib.Sexp in
match e with
| ParseError s -> List [ Atom "parse-error"; Atom s ]
| ManipulationError e -> Error.sexp_of_error e
| ConversionError s -> List [ Atom "conversion-error"; Atom s ]
let wrap_manip = Result.map_error (fun e -> ManipulationError e)
let convert_binding_expr : Ast.binding_expr -> Constraint.binding_expr =
function
| Ast.Var name -> Constraint.Var name
| Ast.Const value -> Constraint.Const (Drl.Ast.value_to_abstract value)
let convert_binding (pairs : (string * Ast.binding_expr) list) :
Constraint.binding =
List.fold_left
(fun acc (key, expr) ->
Constraint.BindingMap.add key (convert_binding_expr expr) acc)
Constraint.BindingMap.empty pairs
let rec convert_body : Ast.constraint_body -> Constraint.t = function
| Ast.MemberOf { target; binding } ->
Constraint.member_of ~target ~binding:(convert_binding binding)
| Ast.Not { body; universe } ->
Constraint.not_ ~universe (convert_body body)
| Ast.And bodies -> Constraint.and_ (List.map convert_body bodies)
| Ast.Or bodies -> Constraint.or_ (List.map convert_body bodies)
| Ast.Exists { variable; quantifier; body } ->
Constraint.exists ~variable ~quantifier (convert_body body)
| Ast.Forall { variable; quantifier; body } ->
Constraint.forall ~variable ~quantifier (convert_body body)
let execute (storage : Storage.t) (db : Management.Database.t)
(stmt : Ast.statement) : (Management.Database.t * string, error) result =
match stmt with
| Ast.RegisterConstraint { constraint_name; relation_name; body } -> (
let runtime_body = convert_body body in
match
Ops.register_constraint storage db ~constraint_name ~relation_name
~body:runtime_body
|> wrap_manip
with
| Ok new_db -> Ok (new_db, "Constraint registered: " ^ constraint_name)
| Error e -> Error e)
end
module Memory = Make (Management.Physical.Memory)
|
