From 6358bc5535088bafe9c6e1d5f34550216bf4b8d4 Mon Sep 17 00:00:00 2001
From: Pierre-Marie Pédrot <pierre-marie.pedrot@inria.fr>
Date: Tue, 24 Oct 2017 14:46:33 +0200
Subject: Port g_proofs to the homebrew GEXTEND parser.

---
 vernac/g_proofs.mlg | 135 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 135 insertions(+)
 create mode 100644 vernac/g_proofs.mlg

(limited to 'vernac/g_proofs.mlg')

diff --git a/vernac/g_proofs.mlg b/vernac/g_proofs.mlg
new file mode 100644
index 000000000..72db53f68
--- /dev/null
+++ b/vernac/g_proofs.mlg
@@ -0,0 +1,135 @@
+(************************************************************************)
+(*         *   The Coq Proof Assistant / The Coq Development Team       *)
+(*  v      *   INRIA, CNRS and contributors - Copyright 1999-2018       *)
+(* <O___,, *       (see CREDITS file for the list of authors)           *)
+(*   \VV/  **************************************************************)
+(*    //   *    This file is distributed under the terms of the         *)
+(*         *     GNU Lesser General Public License Version 2.1          *)
+(*         *     (see LICENSE file for the text of the license)         *)
+(************************************************************************)
+
+{
+
+open Glob_term
+open Constrexpr
+open Vernacexpr
+open Proof_global
+
+open Pcoq
+open Pcoq.Prim
+open Pcoq.Constr
+open Pvernac.Vernac_
+
+let thm_token = G_vernac.thm_token
+
+let hint = Gram.entry_create "hint"
+
+let warn_deprecated_focus =
+  CWarnings.create ~name:"deprecated-focus" ~category:"deprecated"
+         (fun () ->
+           Pp.strbrk
+             "The Focus command is deprecated; use bullets or focusing brackets instead"
+         )
+
+let warn_deprecated_focus_n n =
+  CWarnings.create ~name:"deprecated-focus" ~category:"deprecated"
+         (fun () ->
+           Pp.(str "The Focus command is deprecated;" ++ spc ()
+               ++ str "use '" ++ int n ++ str ": {' instead")
+         )
+
+let warn_deprecated_unfocus =
+  CWarnings.create ~name:"deprecated-unfocus" ~category:"deprecated"
+         (fun () -> Pp.strbrk "The Unfocus command is deprecated")
+
+}
+
+(* Proof commands *)
+GRAMMAR EXTEND Gram
+  GLOBAL: hint command;
+
+  opt_hintbases:
+  [ [ -> { [] }
+    | ":"; l = LIST1 [id = IDENT -> { id } ] -> { l } ] ]
+  ;
+  command:
+    [ [ IDENT "Goal"; c = lconstr ->
+        { VernacDefinition (Decl_kinds.(NoDischarge, Definition), ((CAst.make ~loc Names.Anonymous), None), ProveBody ([], c)) }
+      | IDENT "Proof" -> { VernacProof (None,None) }
+      | IDENT "Proof" ; IDENT "Mode" ; mn = string -> { VernacProofMode mn }
+      | IDENT "Proof"; c = lconstr -> { VernacExactProof c }
+      | IDENT "Abort" -> { VernacAbort None }
+      | IDENT "Abort"; IDENT "All" -> { VernacAbortAll }
+      | IDENT "Abort"; id = identref -> { VernacAbort (Some id) }
+      | IDENT "Existential"; n = natural; c = constr_body ->
+	  { VernacSolveExistential (n,c) }
+      | IDENT "Admitted" -> { VernacEndProof Admitted }
+      | IDENT "Qed" -> { VernacEndProof (Proved (Opaque,None)) }
+      | IDENT "Save"; id = identref ->
+	  { VernacEndProof (Proved (Opaque, Some id)) }
+      | IDENT "Defined" -> { VernacEndProof (Proved (Transparent,None)) }
+      |	IDENT "Defined"; id=identref ->
+	  { VernacEndProof (Proved (Transparent,Some id)) }
+      | IDENT "Restart" -> { VernacRestart }
+      | IDENT "Undo" -> { VernacUndo 1 }
+      | IDENT "Undo"; n = natural -> { VernacUndo n }
+      | IDENT "Undo"; IDENT "To"; n = natural -> { VernacUndoTo n }
+      | IDENT "Focus" ->
+         { warn_deprecated_focus ~loc ();
+         VernacFocus None }
+      | IDENT "Focus"; n = natural ->
+         { warn_deprecated_focus_n n ~loc ();
+         VernacFocus (Some n) }
+      | IDENT "Unfocus" ->
+         { warn_deprecated_unfocus ~loc ();
+         VernacUnfocus }
+      | IDENT "Unfocused" -> { VernacUnfocused }
+      | IDENT "Show" -> { VernacShow (ShowGoal OpenSubgoals) }
+      | IDENT "Show"; n = natural -> { VernacShow (ShowGoal (NthGoal n)) }
+      | IDENT "Show"; id = ident -> { VernacShow (ShowGoal (GoalId id)) }
+      | IDENT "Show"; IDENT "Script" -> { VernacShow ShowScript }
+      | IDENT "Show"; IDENT "Existentials" -> { VernacShow ShowExistentials }
+      | IDENT "Show"; IDENT "Universes" -> { VernacShow ShowUniverses }
+      | IDENT "Show"; IDENT "Conjectures" -> { VernacShow ShowProofNames }
+      | IDENT "Show"; IDENT "Proof" -> { VernacShow ShowProof }
+      | IDENT "Show"; IDENT "Intro" -> { VernacShow (ShowIntros false) }
+      | IDENT "Show"; IDENT "Intros" -> { VernacShow (ShowIntros true) }
+      | IDENT "Show"; IDENT "Match"; id = reference -> { VernacShow (ShowMatch id) }
+      | IDENT "Guarded" -> { VernacCheckGuard }
+      (* Hints for Auto and EAuto *)
+      | IDENT "Create"; IDENT "HintDb" ;
+	  id = IDENT ; b = [ "discriminated" -> { true } | -> { false } ] ->
+	    { VernacCreateHintDb (id, b) }
+      | IDENT "Remove"; IDENT "Hints"; ids = LIST1 global; dbnames = opt_hintbases ->
+	  { VernacRemoveHints (dbnames, ids) }
+      | IDENT "Hint"; h = hint; dbnames = opt_hintbases ->
+          { VernacHints (dbnames, h) }
+      ] ];
+  reference_or_constr:
+   [ [ r = global -> { HintsReference r }
+     | c = constr -> { HintsConstr c } ] ]
+  ;
+  hint:
+    [ [ IDENT "Resolve"; lc = LIST1 reference_or_constr; info = hint_info ->
+          { HintsResolve (List.map (fun x -> (info, true, x)) lc) }
+      | IDENT "Resolve"; "->"; lc = LIST1 global; n = OPT natural ->
+          { HintsResolveIFF (true, lc, n) }
+      | IDENT "Resolve"; "<-"; lc = LIST1 global; n = OPT natural ->
+          { HintsResolveIFF (false, lc, n) }
+      | IDENT "Immediate"; lc = LIST1 reference_or_constr -> { HintsImmediate lc }
+      | IDENT "Transparent"; lc = LIST1 global -> { HintsTransparency (lc, true) }
+      | IDENT "Opaque"; lc = LIST1 global -> { HintsTransparency (lc, false) }
+      | IDENT "Mode"; l = global; m = mode -> { HintsMode (l, m) }
+      | IDENT "Unfold"; lqid = LIST1 global -> { HintsUnfold lqid }
+      | IDENT "Constructors"; lc = LIST1 global -> { HintsConstructors lc } ] ]
+    ;
+  constr_body:
+    [ [ ":="; c = lconstr -> { c }
+      | ":"; t = lconstr; ":="; c = lconstr -> { CAst.make ~loc @@ CCast(c,CastConv t) } ] ]
+  ;
+  mode:
+    [ [ l = LIST1 [ "+" -> { ModeInput }
+                  | "!" -> { ModeNoHeadEvar }
+                  | "-" -> { ModeOutput } ] -> { l } ] ]
+  ;
+END
-- 
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