[api] Move bullets and goals selectors to `proofs/`

`Vernacexpr` lives conceptually higher than `proof`, however,
datatypes for bullets and goal selectors are in `Vernacexpr`.

In particular, we move:

- `proof_bullet`: to `Proof_bullet`
- `goal_selector`: to a new file `Goal_select`

1 files changed, 26 insertions, 0 deletions

diff --git a/proofs/goal_select.mli b/proofs/goal_select.mli
new file mode 100644
index 000000000..b1c572388
--- /dev/null
+++ b/proofs/goal_select.mli
@@ -0,0 +1,26 @@
+(************************************************************************)
+(*         *   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 Names
+
+(* spiwack: I'm choosing, for now, to have [goal_selector] be a
+   different type than [goal_reference] mostly because if it makes sense
+   to print a goal that is out of focus (or already solved) it doesn't
+   make sense to apply a tactic to it. Hence it the types may look very
+   similar, they do not seem to mean the same thing. *)
+type t =
+  | SelectAlreadyFocused
+  | SelectNth of int
+  | SelectList of (int * int) list
+  | SelectId of Id.t
+  | SelectAll
+
+val pr_goal_selector : t -> Pp.t
+val get_default_goal_selector : unit -> t