1 (* Copyright (C) 2000, HELM Team.
3 * This file is part of HELM, an Hypertextual, Electronic
4 * Library of Mathematics, developed at the Computer Science
5 * Department, University of Bologna, Italy.
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15 * GNU General Public License for more details.
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19 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
22 * For details, see the HELM World-Wide-Web page,
23 * http://cs.unibo.it/helm/.
28 (* This module implements the Query interface to the Coercion Graph *)
30 type coercion_search_result =
31 | SomeCoercion of Cic.term list
34 | NotHandled of string Lazy.t
36 val look_for_coercion :
37 Cic.term -> Cic.term -> coercion_search_result
39 val is_a_coercion: Cic.term -> bool
40 val source_of: Cic.term -> Cic.term
41 val target_of: Cic.term -> Cic.term
43 val generate_dot_file: unit -> string