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|
(************************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
(* <O___,, * CNRS-Ecole Polytechnique-INRIA Futurs-Universite Paris Sud *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(************************************************************************)
(* $Id: proof_trees.ml 9154 2006-09-20 17:18:18Z corbinea $ *)
open Closure
open Util
open Names
open Nameops
open Term
open Termops
open Sign
open Evd
open Environ
open Evarutil
open Decl_expr
open Proof_type
open Tacred
open Typing
open Libnames
open Nametab
(*
let is_bind = function
| Tacexpr.Cbindings _ -> true
| _ -> false
*)
(* Functions on goals *)
let mk_goal hyps cl extra =
{ evar_hyps = hyps; evar_concl = cl;
evar_body = Evar_empty; evar_extra = extra }
(* Functions on proof trees *)
let ref_of_proof pf =
match pf.ref with
| None -> failwith "rule_of_proof"
| Some r -> r
let rule_of_proof pf =
let (r,_) = ref_of_proof pf in r
let children_of_proof pf =
let (_,cl) = ref_of_proof pf in cl
let goal_of_proof pf = pf.goal
let subproof_of_proof pf = match pf.ref with
| Some (Nested (_,pf), _) -> pf
| _ -> failwith "subproof_of_proof"
let status_of_proof pf = pf.open_subgoals
let is_complete_proof pf = pf.open_subgoals = 0
let is_leaf_proof pf = (pf.ref = None)
let is_tactic_proof pf = match pf.ref with
| Some (Nested (Tactic _,_),_) -> true
| _ -> false
let pf_lookup_name_as_renamed env ccl s =
Detyping.lookup_name_as_renamed env ccl s
let pf_lookup_index_as_renamed env ccl n =
Detyping.lookup_index_as_renamed env ccl n
(* Functions on rules (Proof mode) *)
let is_dem_rule = function
Decl_proof _ -> true
| _ -> false
let is_proof_instr = function
Nested(Proof_instr (_,_),_) -> true
| _ -> false
let is_focussing_command = function
Decl_proof b -> b
| Nested (Proof_instr (b,_),_) -> b
| _ -> false
(*********************************************************************)
(* Pretty printing functions *)
(*********************************************************************)
open Pp
let db_pr_goal g =
let env = evar_env g in
let penv = print_named_context env in
let pc = print_constr_env env g.evar_concl in
str" " ++ hv 0 (penv ++ fnl () ++
str "============================" ++ fnl () ++
str" " ++ pc) ++ fnl ()
|
