Source file rewriteStratAst.ml
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open Pp
open Names
open Rewrite
type unary_strategy =
Subterms | Subterm | Innermost | Outermost
| Bottomup | Topdown | Progress | Try | Any | Repeat
type binary_strategy =
| Compose
type nary_strategy = Choice
type ('constr,'constr_pattern,'redexpr,'id,'tactic) strategy_ast =
| StratId | StratFail | StratRefl
| StratUnary of unary_strategy * ('constr,'constr_pattern,'redexpr,'id,'tactic) strategy_ast
| StratBinary of
binary_strategy * ('constr,'constr_pattern,'redexpr,'id,'tactic) strategy_ast * ('constr,'constr_pattern,'redexpr,'id,'tactic) strategy_ast
| StratNAry of nary_strategy * ('constr,'constr_pattern,'redexpr,'id,'tactic) strategy_ast list
| StratConstr of 'constr * bool
| StratTerms of 'constr list
| StratHints of bool * string
| StratEval of 'redexpr
| StratFold of 'constr
| StratVar of 'id
| StratFix of 'id * ('constr,'constr_pattern,'redexpr,'id,'tactic) strategy_ast
| StratMatches of 'constr_pattern
| StratTactic of 'tactic
let rec map_strategy f g h i j = function
| StratId | StratFail | StratRefl as s -> s
| StratUnary (s, str) -> StratUnary (s, map_strategy f g h i j str)
| StratBinary (s, str, str') -> StratBinary (s, map_strategy f g h i j str, map_strategy f g h i j str')
| StratNAry (s, strs) -> StratNAry (s, List.map (map_strategy f g h i j) strs)
| StratConstr (c, b) -> StratConstr (f c, b)
| StratTerms l -> StratTerms (List.map f l)
| StratHints (b, id) -> StratHints (b, id)
| StratEval r -> StratEval (h r)
| StratFold c -> StratFold (f c)
| StratVar id -> StratVar (i id)
| StratFix (id, s) -> StratFix (i id, map_strategy f g h i j s)
| StratMatches c -> StratMatches (g c)
| StratTactic t -> StratTactic (j t)
let pr_ustrategy = function
| Subterms -> str "subterms"
| Subterm -> str "subterm"
| Innermost -> str "innermost"
| Outermost -> str "outermost"
| Bottomup -> str "bottomup"
| Topdown -> str "topdown"
| Progress -> str "progress"
| Try -> str "try"
| Any -> str "any"
| Repeat -> str "repeat"
let paren p = str "(" ++ p ++ str ")"
let rec pr_strategy0 prc prcp prr prid prtac = function
| StratId -> str "id"
| StratFail -> str "fail"
| StratRefl -> str "refl"
| str -> paren (pr_strategy prc prcp prr prid prtac str)
and pr_strategy1 prc prcp prr prid prtac = function
| StratUnary (s, str) ->
pr_ustrategy s ++ spc () ++ pr_strategy1 prc prcp prr prid prtac str
| StratNAry (Choice, strs) ->
str "choice" ++ brk (1,2) ++ prlist_with_sep spc (fun str -> hov 0 (pr_strategy0 prc prcp prr prid prtac str)) strs
| StratConstr (c, true) -> prc c
| StratConstr (c, false) -> str "<-" ++ spc () ++ prc c
| StratVar id -> prid id
| StratTerms cl -> str "terms" ++ spc () ++ pr_sequence prc cl
| StratHints (old, id) ->
let cmd = if old then "old_hints" else "hints" in
str cmd ++ spc () ++ str id
| StratEval r -> str "eval" ++ spc () ++ prr r
| StratFold c -> str "fold" ++ spc () ++ prc c
| StratMatches p -> str "pattern" ++ spc () ++ prcp p
| StratTactic t -> str"tactic" ++ spc () ++ prtac t
| str -> pr_strategy0 prc prcp prr prid prtac str
and pr_strategy2 prc prcp prr prid prtac = function
| StratBinary (Compose, str1, str2) ->
pr_strategy2 prc prcp prr prid prtac str1 ++ str ";" ++ spc () ++ hov 0 (pr_strategy1 prc prcp prr prid prtac str2)
| str -> hov 0 (pr_strategy1 prc prcp prr prid prtac str)
and pr_strategy prc prcp prr prid prtac = function
| StratFix (id,s) -> str "fix" ++ spc() ++ prid id ++ spc() ++ str ":=" ++ spc() ++ hov 0 (pr_strategy1 prc prcp prr prid prtac s)
| str -> pr_strategy2 prc prcp prr prid prtac str
let strategy_of_ast bindings strat =
let rec aux bindings = function
| StratId -> Strategies.id
| StratFail -> Strategies.fail
| StratRefl -> Strategies.refl
| StratUnary (f, s) ->
let s' = aux bindings s in
let f' = match f with
| Subterms -> Strategies.all_subterms
| Subterm -> Strategies.one_subterm
| Innermost -> Strategies.innermost
| Outermost -> Strategies.outermost
| Bottomup -> Strategies.bottomup
| Topdown -> Strategies.topdown
| Progress -> Strategies.progress
| Try -> Strategies.try_
| Any -> Strategies.any
| Repeat -> Strategies.repeat
in f' s'
| StratBinary (f, s, t) ->
let s' = aux bindings s in
let t' = aux bindings t in
let f' = match f with
| Compose -> Strategies.seq
in f' s' t'
| StratNAry (Choice, strs) ->
let strs = List.map (aux bindings) strs in
begin match strs with
| [] -> assert false
| s::strs -> List.fold_left Strategies.choice s strs
end
| StratConstr ((_, c), b) -> Strategies.one_lemma c b None AllOccurrences
| StratHints (old, id) -> if old then Strategies.old_hints id else Strategies.hints id
| StratTerms l -> Strategies.lemmas (List.map (fun (_, c) -> (c, true, None)) l)
| StratEval r ->
Strategies.with_env @@ fun env sigma ->
let sigma, r = r env sigma in
sigma, Strategies.reduce r
| StratFold c -> Strategies.fold_glob (fst c)
| StratVar id -> Id.Map.get id bindings
| StratFix (id, s) -> Strategies.fix (fun self -> aux (Id.Map.add id self bindings) s)
| StratMatches p -> Strategies.matches p
| StratTactic t -> Strategies.ltac1_tactic_call t
in aux bindings strat
let strategy_of_ast s = strategy_of_ast Id.Map.empty s