-(* Find the goal which matches the given tactic and run it.
- * Params is a list of constants.
- *)
-and run_goal_for_tactic loc env tactic const_args =
- (* Search across all goals for a matching tactic. *)
- let goals =
- let env = Ast.Env.bindings env in
- filter_map
- (function (name, Ast.EGoal (loc, goal)) -> Some (name, goal) | _ -> None)
- env in
- let name, goal =
- (* If there are multiple goals matching, this must choose
- * the most recently defined (XXX).
- *)
- try
- List.find
- (fun (_, (_, patterns, _, _)) ->
- List.exists (matching_pattern loc env tactic const_args) patterns)
- goals
- with
- Not_found ->
- failwithf "%a: don't know how to build %s %s"
- Ast.string_loc loc
- tactic
- (String.concat ", "
- (List.map (function Ast.CString s -> s) const_args)) in
-
- let args = [] (* XXX calculate free variables *) in
- run_goal loc env name args goal
-
-(* XXX This only does exact matches at the moment. *)
-and matching_pattern loc env tactic const_args = function
- | Ast.PTactic (loc, constructor, params)
- when tactic = constructor &&
- List.length const_args = List.length params ->
- (* Try to simplify the parameters of this pattern down
- * to constants, but don't fail here if we can't do this.
- *)
- (try
- let params = List.map (substitute loc env) params in
- let params = List.map (fun s -> Ast.CString s) params in
- const_args = params
- with Failure _ -> false
- )
-
- | Ast.PTactic _ -> false
-
- | Ast.PVar (loc, name) -> assert false
-(*
- NOT IMPLEMENTED - we need variables to contain constructors!
- (try
- let expr = Ast.StringMap.find name env in
- let expr = simplify env expr in
- with Not_found -> false
- )
-*)
-
-(* Run a named goal. *)
-and run_goal loc env name args (params, patterns, deps, code) =
- (* Substitute the args for the parameters in the environment. *)
- let params =
- try List.combine params args
- with Invalid_argument _ ->
- failwithf "%a: calling goal ‘%s’ with wrong number of arguments"
- Ast.string_loc loc name in