49 lines
1.7 KiB
OCaml
49 lines
1.7 KiB
OCaml
(***********************************************************************)
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(* *)
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(* Objective Caml *)
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(* *)
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(* Xavier Leroy, projet Cristal, INRIA Rocquencourt *)
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(* *)
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(* Copyright 1996 Institut National de Recherche en Informatique et *)
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(* en Automatique. All rights reserved. This file is distributed *)
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(* under the terms of the Q Public License version 1.0. *)
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(* *)
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(***********************************************************************)
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(* $Id$ *)
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type t =
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Pident of Ident.t
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| Pdot of t * string * int
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| Papply of t * t
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let nopos = -1
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let rec same p1 p2 =
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match (p1, p2) with
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(Pident id1, Pident id2) -> Ident.same id1 id2
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| (Pdot(p1, s1, pos1), Pdot(p2, s2, pos2)) -> s1 = s2 && same p1 p2
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| (Papply(fun1, arg1), Papply(fun2, arg2)) ->
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same fun1 fun2 && same arg1 arg2
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| (_, _) -> false
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let rec isfree id = function
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Pident id' -> Ident.same id id'
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| Pdot(p, s, pos) -> isfree id p
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| Papply(p1, p2) -> isfree id p1 || isfree id p2
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let rec binding_time = function
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Pident id -> Ident.binding_time id
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| Pdot(p, s, pos) -> binding_time p
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| Papply(p1, p2) -> max (binding_time p1) (binding_time p2)
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let rec name = function
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Pident id -> Ident.name id
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| Pdot(p, s, pos) -> name p ^ "." ^ s
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| Papply(p1, p2) -> name p1 ^ "(" ^ name p2 ^ ")"
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let rec head = function
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Pident id -> id
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| Pdot(p, s, pos) -> head p
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| Papply(p1, p2) -> assert false
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