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(* Js_of_ocaml compiler
* http://www.ocsigen.org/js_of_ocaml/
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, with linking exception;
* either version 2.1 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*)
open Code
type def =
| Expr of Code.expr
| Phi of
{ known : Var.Set.t (* Known arguments *)
; others : bool (* Can there be other arguments *)
}
type approx =
| Top
| Values of
{ known : Var.Set.t (* List of possible values *)
; others : bool (* Whether other values are possible *)
}
type escape_status =
| Escape
| Escape_constant (* Escapes but we know the value is not modified *)
| No
type info =
{ info_defs : def array
; info_approximation : approx Var.Tbl.t
; info_may_escape : Var.ISet.t
; info_variable_may_escape : escape_status array
; info_return_vals : Var.Set.t Var.Map.t
}
val f : fast:bool -> Code.program -> info
val exact_call : info -> Var.t -> int -> bool
val function_arity : info -> Var.t -> int option
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