(************************************************************************) (* * The Rocq Prover / The Rocq Development Team *) (* v * Copyright INRIA, CNRS and contributors *) (* <O___,, * (see version control and CREDITS file for authors & dates) *) (* \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 Pp open CErrors open Util open CAst open Names open Nameops open Namegen open Constr open Context open Libnames open Globnames open Impargs open Glob_term open Glob_ops open Patternops open Pretyping open Structures open Cases open Constrexpr open Constrexpr_ops open Notation_term open Notation_ops open Notation open Inductiveops open Context.Rel.Declaration open NumTok
(** constr_expr -> glob_constr translation: - it adds holes for implicit arguments - it replaces notations by their value (scopes stuff are here) - it recognizes global vars from local ones - it prepares pattern matching problems (a pattern becomes a tree where nodes are constructor/variable pairs and leafs are variables)
All that at once, fasten your seatbelt!
*)
(* To interpret implicits and arg scopes of variables in inductive
types and recursive definitions and of projection names in records *)
let var_uid = let count = ref 0 in fun id -> incr count; Id.to_string id ^ ":" ^ string_of_int !count
type var_internalization_data = { (* type of the "free" variable, for coqdoc, e.g. while typing the
constructor of JMeq, "JMeq" behaves as a variable of type Inductive *)
var_intern_typ : var_internalization_type; (* signature of impargs of the variable *)
var_impls : Impargs.implicit_status list; (* subscopes of the args of the variable *)
var_scopes : scope_name listlist; (* unique ID for coqdoc links *)
var_uid : var_unique_id;
}
type internalization_error =
| VariableCapture of Id.t * Id.t
| IllegalMetavariable
| NotAConstructor of qualid
| UnboundFixName ofbool * Id.t
| NonLinearPattern of Id.t
| BadPatternsNumber of int * int
| NotAProjection of qualid
| ProjectionsOfDifferentRecords ofStructure.t * Structure.t
exception InternalizationError of internalization_error
let explain_variable_capture id id' =
Id.print id ++ str " is dependent in the type of " ++ Id.print id' ++
strbrk ": cannot interpret both of them with the same type"
let explain_illegal_metavariable =
str "Metavariables allowed only in patterns"
let explain_unbound_fix_name is_cofix id =
str "The name" ++ spc () ++ Id.print id ++
spc () ++ str "is not bound in the corresponding" ++ spc () ++
str (if is_cofix then"co"else"") ++ str "fixpoint definition"
let explain_non_linear_pattern id =
str "The variable " ++ Id.print id ++ str " is bound several times in pattern"
let explain_bad_patterns_number n1 n2 =
str "Expecting " ++ int n1 ++ str (String.plural n1 " pattern") ++
str " but found " ++ int n2
let inductive_of_record s = let inductive = GlobRef.IndRef (s.Structure.name) in
Nametab.shortest_qualid_of_global Id.Set.empty inductive
let explain_field_not_a_projection field_id =
pr_qualid field_id ++ str ": Not a projection"
let explain_projections_of_diff_records record1 record2 = let inductive1_id = inductive_of_record record1 in let inductive2_id = inductive_of_record record2 in
str "This record contains fields of both " ++ pr_qualid inductive1_id ++
str " and " ++ pr_qualid inductive2_id
let explain_internalization_error e = let pp = match e with
| VariableCapture (id,id') -> explain_variable_capture id id'
| IllegalMetavariable -> explain_illegal_metavariable
| NotAConstructor ref -> explain_not_a_constructor ref
| UnboundFixName (iscofix,id) -> explain_unbound_fix_name iscofix id
| NonLinearPattern id -> explain_non_linear_pattern id
| BadPatternsNumber (n1,n2) -> explain_bad_patterns_number n1 n2
| NotAProjection field_id -> explain_field_not_a_projection field_id
| ProjectionsOfDifferentRecords (inductive1_id, inductive2_id) ->
explain_projections_of_diff_records inductive1_id inductive2_id in pp ++ str "."
let _ = CErrors.register_handler (function
| InternalizationError e ->
Some (explain_internalization_error e)
| _ -> None)
let error_bad_inductive_type ?loc ?info () =
user_err ?loc ?info (str "This should be an inductive type applied to patterns.")
let error_parameter_not_implicit ?loc =
user_err ?loc (str "The parameters do not bind in patterns;" ++ spc () ++ str "they must be replaced by '_'.")
let error_ldots_var ?loc =
user_err ?loc (str "Special token " ++ Id.print ldots_var ++
str " is for use in the Notation command.")
(**********************************************************************) (* Pre-computing the implicit arguments and arguments scopes needed *) (* for interpretation *)
let parsing_explicit = reffalse
let empty_internalization_env = Id.Map.empty
let compute_internalization_data env sigma ?silent id ty typ impl = let impl = compute_implicits_with_manual env sigma ?silent typ (is_implicit_args()) impl in
make_var_data ty impl (compute_arguments_scope env sigma typ) (var_uid id)
let compute_internalization_env env sigma ?(impls=empty_internalization_env) ?force ty names = let force = match force with None -> List.map (fun _ -> Id.Set.empty) names | Some l -> l in let f force_ids = function {impl_pos=(na,_,_)} as impl -> match na with
| Name id when Id.Set.mem id force_ids -> {impl with impl_force = false}
| _ -> impl in List.fold_left4
(funmap id force_ids typ impl -> let var_info = compute_internalization_data env sigma id ty typ impl in let impls = List.map (Option.map (f force_ids)) var_info.var_impls in
Id.Map.add id {var_info with var_impls = impls} map)
impls names force
let implicits_of_decl_in_internalization_env id (int_env:internalization_env) = let {var_impls=impls} = Id.Map.find id int_env in impls
(**********************************************************************) (* Contracting "{ _ }" in notations *)
let rec wildcards ntn n = if Int.equal n (String.length ntn) then [] elselet l = spaces ntn (n+1) inif ntn.[n] == '_'then n::l else l and spaces ntn n = if Int.equal n (String.length ntn) then [] elseif ntn.[n] == ' 'then wildcards ntn (n+1) else spaces ntn (n+1)
let expand_notation_string ntn n = let pos = List.nth (wildcards ntn 0) n in let hd = if Int.equal pos 0 then""elseString.sub ntn 0 pos in let tl = if Int.equal pos (String.length ntn) then"" elseString.sub ntn (pos+1) (String.length ntn - pos -1) in
hd ^ "{ _ }" ^ tl
(* This contracts the special case of "{ _ }" for sumbool, sumor notations *) (* Remark: expansion of squash at definition is done in metasyntax.ml *) let contract_curly_brackets ntn (l,ll,bl,bll) = match ntn with
| InCustomEntry _,_ -> ntn,(l,ll,bl,bll)
| InConstrEntry, ntn -> let ntn' = ref ntn in let rec contract_squash n = function
| [] -> []
| { CAst.v = CNotation (None,(InConstrEntry,"{ _ }"),([a],[],[],[])) } :: l ->
ntn' := expand_notation_string !ntn' n;
contract_squash n (a::l)
| a :: l ->
a::contract_squash (n+1) l in let l = contract_squash 0 l in (* side effect; don't inline *)
(InConstrEntry,!ntn'),(l,ll,bl,bll)
let contract_curly_brackets_pat ntn (l,ll,bl) = match ntn with
| InCustomEntry _,_ -> ntn,(l,ll,bl)
| InConstrEntry, ntn -> let ntn' = ref ntn in let rec contract_squash n = function
| [] -> []
| { CAst.v = CPatNotation (None,(InConstrEntry,"{ _ }"),([a],[],[]),[]) } :: l ->
ntn' := expand_notation_string !ntn' n;
contract_squash n (a::l)
| a :: l ->
a::contract_squash (n+1) l in let l = contract_squash 0 l in (* side effect; don't inline *)
(InConstrEntry,!ntn'),(l,ll,bl)
type intern_env = {
ids: Id.Set.t;
strict_check: booloption; (* None = not passed via ltac yet: works as "true" unless when interpreting
ltac:() in which case we assume the default Ltac value, that is "false" *)
local_univs: local_univs;
tmp_scope: Notation_term.tmp_scope_name list;
scopes: Notation_term.scope_name list;
impls: internalization_env;
binder_block_names: abstraction_kind option(* None = unknown *) option;
ntn_binding_ids: Id.Set.t; (* subset of ids that are notation variables *)
}
type pattern_intern_env = {
pat_scopes: Notation_term.subscopes; (* ids = Some means accept local variables; this is useful for
terms as patterns parsed as patterns in notations *)
pat_ids: Id.Set.t option;
}
(**********************************************************************) (* Remembering the parsing scope of variables in notations *)
let make_current_scope tmp scopes = match tmp, scopes with
| [], scopes -> scopes
| [tmp_scope], (sc :: _) when String.equal sc tmp_scope -> scopes
| tmp_scope, scopes -> tmp_scope @ scopes
let pr_scope_stack begin_of_sentence l = let bstr x = if begin_of_sentence then str (CString.capitalize_ascii x) else str x in match l with
| [] -> bstr "the empty scope stack"
| [a] -> bstr "scope " ++ str a
| l -> bstr "scope stack " ++
str "[" ++ prlist_with_sep pr_comma str l ++ str "]"
let warn_inconsistent_scope =
CWarnings.create ~name:"inconsistent-scopes" ~category:CWarnings.CoreCategories.syntax
(fun (id,scopes1,scopes2) ->
(str "Argument " ++ Id.print id ++
strbrk " was previously inferred to be in " ++
pr_scope_stack false scopes1 ++
strbrk " but is here used in " ++
pr_scope_stack false scopes2 ++
strbrk ". " ++
pr_scope_stack true scopes1 ++
strbrk " will be used at parsing time unless you override it by" ++
strbrk " annotating the argument with an explicit scope of choice."))
let error_expect_binder_notation_type ?loc id =
user_err ?loc
(Id.print id ++
str " is expected to occur in binding position in the right-hand side.")
let set_notation_var_scope ?loc id (tmp_scope,subscopes as scopes) ntnbinders ntnvars = try let {Genintern.ntnvar_typ=typ} as status = Id.Map.find id ntnvars in match typ with
| Notation_term.NtnInternTypeOnlyBinder -> error_expect_binder_notation_type ?loc id
| Notation_term.NtnInternTypeAny principal -> let () = match status.ntnvar_scopes with
| None -> status.ntnvar_scopes <- Some scopes
| Some (tmp_scope', subscopes') -> let s' = make_current_scope tmp_scope' subscopes' in let s = make_current_scope tmp_scope subscopes in ifOption.is_empty principal && not (List.equal String.equal s' s) then
warn_inconsistent_scope ?loc (id,s',s) in let () = match status.ntnvar_binding_ids with
| None -> status.ntnvar_binding_ids <- Some ntnbinders
| Some ntnbinders' -> status.ntnvar_binding_ids <- Some (Id.Set.inter ntnbinders ntnbinders') in let () = match status.ntnvar_used with
| [] -> () (* not recording if notation var is used *)
| true :: _ -> () (* already marked used *)
| false :: rest -> status.ntnvar_used <- true :: rest in
() with Not_found -> (* Not in a notation *)
()
let set_var_is_binder ?loc id ntnvars = try let status = Id.Map.find id ntnvars in
status.Genintern.ntnvar_used_as_binder <- true with Not_found -> (* Not in a notation *)
()
let set_type_scope env = {env with tmp_scope = Notation.current_type_scope_names ()}
let reset_tmp_scope env = {env with tmp_scope = []}
let set_env_scopes env (scopt,subscopes) =
{env with tmp_scope = scopt; scopes = subscopes @ env.scopes}
let env_for_pattern env =
{pat_scopes = (env.tmp_scope, env.scopes); pat_ids = Some env.ids}
let mkGProd ?loc (na,bk,t) body = DAst.make ?loc @@ GProd (na, None, bk, t, body) let mkGLambda ?loc (na,bk,t) body = DAst.make ?loc @@ GLambda (na, None, bk, t, body)
(**********************************************************************) (* Utilities for binders *)
let warn_shadowed_implicit_name =
CWarnings.create ~name:"shadowed-implicit-name" ~category:CWarnings.CoreCategories.syntax
Pp.(fun na -> str "Making shadowed name of implicit argument accessible by position.")
let exists_name na l = match na with
| Name id -> List.exists (function Some { impl_pos = (Name id', _, _) } -> Id.equal id id' | _ -> false) l
| _ -> false
let build_impls ?loc n bk na acc = let impl_status max = let na = if exists_name na acc thenbegin warn_shadowed_implicit_name ?loc na; Anonymous end else na in
Some {
impl_pos = (na, n, (*TODO, enhancement: compute dependency*) None);
impl_expl = Manual;
impl_max = max;
impl_force = true
} in match bk with
| NonMaxImplicit -> impl_status false :: acc
| MaxImplicit -> impl_status true :: acc
| Explicit -> None :: acc
let impls_binder_list = let rec aux acc n = function
| (na,_,bk,None,_) :: binders -> aux (build_impls n bk na acc) (n+1) binders
| (na,_,bk,Some _,_) :: binders -> aux acc n binders
| [] -> (n,acc) in aux []
let impls_type_list n ?(args = []) = let rec aux acc n c = match DAst.get c with
| GProd (na,_,bk,_,c) -> aux (build_impls n bk na acc) (n+1) c
| _ -> List.rev acc in aux args n
let impls_term_list n ?(args = []) = let rec aux acc n c = match DAst.get c with
| GLambda (na,_,bk,_,c) -> aux (build_impls n bk na acc) (n+1) c
| GRec (fix_kind, nas, args, tys, bds) -> let nb = match fix_kind with |GFix (_, n) -> n | GCoFix n -> n in let n,acc' = List.fold_left (fun (n,acc) (na, _, bk, _, _) -> (n+1,build_impls n bk na acc)) (n,acc) args.(nb) in
aux acc' n bds.(nb)
|_ -> List.rev acc in aux args n
(* Check if in binder "(x1 x2 .. xn : t)", none of x1 .. xn-1 occurs in t *) let rec check_capture ty = letopen CAst in function
| { loc; v = Name id } :: { v = Name id' } :: _ when occur_glob_constr id ty ->
Loc.raise ?loc (InternalizationError (VariableCapture (id,id')))
| _::nal ->
check_capture ty nal
| [] ->
()
(** Status of the internalizer wrt "Arguments" of names *)
let restart_no_binders env =
{ env with binder_block_names = None} (* Not in relation with the "Arguments" of a name *)
let restart_prod_binders env =
{ env with binder_block_names = Some (Some AbsPi) } (* In a position binding a type to a name *)
let restart_lambda_binders env =
{ env with binder_block_names = Some (Some AbsLambda) } (* In a position binding a body to a name *)
let switch_prod_binders env = match env.binder_block_names with
| Some o when o <> Some AbsLambda -> restart_prod_binders env
| _ -> restart_no_binders env (* In a position switching to a type *)
let switch_lambda_binders env = match env.binder_block_names with
| Some o when o <> Some AbsPi -> restart_lambda_binders env
| _ -> restart_no_binders env (* In a position switching to a term *)
let slide_binders env = match env.binder_block_names with
| Some o when o <> Some AbsPi -> restart_prod_binders env
| _ -> restart_no_binders env (* In a position of cast *)
(* [test_kind_strict] rules out pattern which refers to global other
than constructors or variables; It is used in instances of notations *)
let test_kind_pattern_in_notation ?loc = function
| GlobRef.ConstructRef _ -> () (* We do not accept non constructors to be used as variables in
patterns *)
| GlobRef.ConstRef _ ->
user_err ?loc (str "Found a constant while a pattern was expected.")
| GlobRef.IndRef _ ->
user_err ?loc (str "Found an inductive type while a pattern was expected.")
| GlobRef.VarRef _ -> (* we accept a section variable name to be used as pattern variable *) raise Not_found
let test_kind_ident_in_notation ?loc = function
| GlobRef.ConstructRef _ ->
user_err ?loc (str "Found a constructor while a variable name was expected.")
| GlobRef.ConstRef _ ->
user_err ?loc (str "Found a constant while a variable name was expected.")
| GlobRef.IndRef _ ->
user_err ?loc (str "Found an inductive type while a variable name was expected.")
| GlobRef.VarRef _ -> (* we accept a section variable name to be used as pattern variable *) raise Not_found
(* [test_kind_tolerant] allow global reference names to be used as pattern variables *)
let test_kind_tolerant ?loc = function
| GlobRef.ConstructRef _ -> ()
| GlobRef.ConstRef _ | GlobRef.IndRef _ | GlobRef.VarRef _ -> (* A non-constructor global reference in a pattern is seen as a variable *) raise Not_found
(**)
let locate_if_hole ?loc na c = match DAst.get c with
| GHole (GNamedHole _) -> c
| GHole _ ->
(trymatch na with
| Name id -> glob_constr_of_notation_constr ?loc
(Reserve.find_reserved_type id)
| Anonymous -> raise Not_found with Not_found -> DAst.make ?loc @@ GHole (GBinderType na))
| _ -> c
let pure_push_name_env (id,implargs,is_ntn_id) env =
{env with
ids = Id.Set.add id env.ids;
impls = Id.Map.add id implargs env.impls;
ntn_binding_ids = if is_ntn_id then Id.Set.add id env.ntn_binding_ids else env.ntn_binding_ids;
}
let push_name_env ~dump ntnvars implargs env = letopen CAst in
function
| { loc; v = Anonymous } ->
env
| { loc; v = Name id } -> if Id.Map.is_empty ntnvars && Id.equal id ldots_var then error_ldots_var ?loc;
set_var_is_binder ?loc id ntnvars; let uid = var_uid id in if dump then Dumpglob.dump_binding ?loc uid;
pure_push_name_env (id,(make_var_data Variable implargs [] uid),Id.Map.mem id ntnvars) env
let remember_binders_impargs env bl = List.map_filter (fun (na,_,_,_,_) -> match na with
| Anonymous -> None
| Name id -> Some (id,Id.Map.find id env.impls,Id.Set.mem id env.ntn_binding_ids)) bl
let restore_binders_impargs env l = List.fold_right pure_push_name_env l env
let warn_ignoring_unexpected_implicit_binder_declaration =
CWarnings.create ~name:"unexpected-implicit-declaration" ~category:CWarnings.CoreCategories.syntax
Pp.(fun () -> str "Ignoring implicit binder declaration in unexpected position.")
let check_implicit_meaningful ?loc k env = if k <> Explicit && env.binder_block_names = None then
(warn_ignoring_unexpected_implicit_binder_declaration ?loc (); Explicit) else
k
let intern_generalized_binder ~dump intern_type ntnvars
env {loc;v=na} b' t ty = let ids = (match na with Anonymous -> fun x -> x | Name na -> Id.Set.add na) env.ids in let ty, ids' = if t then ty, ids else Implicit_quantifiers.implicit_application ids ty in let ty' = intern_type {env with ids = ids; strict_check = Some false} ty in let fvs = Implicit_quantifiers.generalizable_vars_of_glob_constr ~bound:ids ~allowed:ids' ty'in let env' = List.fold_left
(fun env {loc;v=x} -> push_name_env ~dump ntnvars [](*?*) env (make ?loc @@ Name x))
env fvs in let b' = check_implicit_meaningful ?loc b' env in let bl = List.map
CAst.(map (fun id ->
(Name id, MaxImplicit, DAst.make ?loc @@ GHole (GBinderType (Name id)))))
fvs in let na = match na with
| Anonymous -> let id = match ty with
| { v = CApp ({ v = CRef (qid,_) }, _) } when qualid_is_ident qid ->
qualid_basename qid
| _ -> default_non_dependent_ident in let ids' = List.fold_left (fun ids' lid -> Id.Set.add lid.CAst.v ids') ids' fvs in let id =
Implicit_quantifiers.make_fresh ids' (Global.env ()) id in
Name id
| _ -> na in let impls = impls_type_list 1 ty' in
(push_name_env ~dump ntnvars impls env' (make ?loc na),
(make ?loc (na,b',ty')) :: List.rev bl)
let intern_assumption ~dump intern ntnvars env nal bk ty = let intern_type env = intern (restart_prod_binders (set_type_scope env)) in match bk with
| Default k -> let ty = intern_type env ty in
check_capture ty nal; let impls = impls_type_list 1 ty in List.fold_left
(fun (env, bl) ({loc;v=na} as locna) -> let k = check_implicit_meaningful ?loc k env in
(push_name_env ~dump ntnvars impls env locna,
(make ?loc (na,k,locate_if_hole ?loc na ty))::bl))
(env, []) nal
| Generalized (b',t) -> let env, b = intern_generalized_binder ~dump intern_type ntnvars env (List.hd nal) b' t ty in
env, b
let glob_local_binder_of_extended = DAst.with_loc_val (fun ?loc -> function
| GLocalAssum (na,r,bk,t) -> (na,None,bk,None,t)
| GLocalDef (na,r,c,Some t) -> (na,None,Explicit,Some c,t)
| GLocalDef (na,r,c,None) -> let t = DAst.make ?loc @@ GHole (GBinderType na) in
(na,None,Explicit,Some c,t)
| GLocalPattern (_,_,_,_) ->
Loc.raise ?loc (Gramlib.Grammar.Error "Pattern with quote not allowed here")
)
let intern_cases_pattern_fwd = ref (fun _ -> failwith "intern_cases_pattern_fwd")
let intern_letin_binder ~dump intern ntnvars env (({loc;v=na} as locna),def,ty) = let term = intern (reset_tmp_scope (restart_lambda_binders env)) def in let ty = Option.map (intern (set_type_scope (restart_prod_binders env))) ty in let impls = impls_term_list 1 term in
(push_name_env ~dump ntnvars impls env locna,
(na,term,ty))
let intern_cases_pattern_as_binder ~dump intern test_kind ntnvars env bk (CAst.{v=p;loc} as pv) = let p,t,tmp_scope = match p with
| CPatCast (p, t) -> (p, Some t, (* Redone later, not nice: *) Notation.compute_glob_type_scope (intern (set_type_scope env) t))
| _ -> (pv, None, []) in let il,disjpat = let (il, subst_disjpat) = !intern_cases_pattern_fwd test_kind ntnvars (env_for_pattern {env with tmp_scope}) p in let substl,disjpat = List.split subst_disjpat in ifnot (List.for_all (fun subst -> Id.Map.equal Id.equal subst Id.Map.empty) substl) then
user_err ?loc (str "Unsupported nested \"as\" clause.");
il,disjpat in let na = alias_of_pat (List.hd disjpat) in let env = List.fold_right (fun {loc;v=id} env -> push_name_env ~dump ntnvars [] env (make ?loc @@ Name id)) il env in let ienv = Name.fold_right Id.Set.remove na env.ids in let id = Namegen.next_name_away_with_default "pat" na ienv in let na = make ?loc @@ Name id in let t = match t with
| Some t -> t
| None -> CAst.make ?loc @@ CHole (Some (GBinderType na.v)) in let _, bl' = intern_assumption ~dump intern ntnvars env [na] (Default bk) t in let {v=(_,bk,t)} = List.hd bl' in let il = List.map (fun id -> id.v) il in
env,((disjpat,il),id),bk,t
let intern_local_binder_aux ~dump intern ntnvars (env,bl) = function
| CLocalAssum(nal,_,bk,ty) -> let env, bl' = intern_assumption ~dump intern ntnvars env nal bk ty in let bl' = List.map (fun {loc;v=(na,c,t)} -> DAst.make ?loc @@ GLocalAssum (na,None,c,t)) bl'in
env, bl' @ bl
| CLocalDef( {loc; v=na} as locna,_,def,ty) -> let env,(na,def,ty) = intern_letin_binder ~dump intern ntnvars env (locna,def,ty) in
env, (DAst.make ?loc @@ GLocalDef (na,None,def,ty)) :: bl
| CLocalPattern p -> let env, ((disjpat,il),id),bk,t = intern_cases_pattern_as_binder ~dump intern test_kind_tolerant ntnvars env Explicit p in
(env, (DAst.make ?loc:p.CAst.loc @@ GLocalPattern((disjpat,il),id,bk,t)) :: bl)
let intern_generalization intern env ntnvars loc bk c = let c = intern {env with strict_check = Some false} c in let fvs = Implicit_quantifiers.generalizable_vars_of_glob_constr ~bound:env.ids c in let env', c' = let abs = let pi = match Notation.current_type_scope_names () with
| [] -> false
| type_scopes -> let is_type_scope = match env.tmp_scope with
| [] -> false
| scl -> List.equal String.equal scl type_scopes in
is_type_scope || List.exists (fun sc -> String.List.mem sc env.scopes) type_scopes in if pi then
(fun {loc=loc';v=id} acc ->
DAst.make ?loc:(Loc.merge_opt loc' loc) @@
GProd (Name id, None, bk, DAst.make ?loc:loc' @@ GHole (GBinderType (Name id)), acc)) else
(fun {loc=loc';v=id} acc ->
DAst.make ?loc:(Loc.merge_opt loc' loc) @@
GLambda (Name id, None, bk, DAst.make ?loc:loc' @@ GHole (GBinderType (Name id)), acc)) in List.fold_right (fun ({loc;v=id} as lid) (env, acc) -> let env' = push_name_env ~dump:true ntnvars [] env CAst.(make @@ Name id) in
(env', abs lid acc)) fvs (env,c) in c'
let rec expand_binders ?loc mk bl c = match bl with
| [] -> c
| b :: bl -> match DAst.get b with
| GLocalDef (n, r, b, oty) ->
expand_binders ?loc mk bl (DAst.make ?loc @@ GLetIn (n, r, b, oty, c))
| GLocalAssum (n, _, bk, t) ->
expand_binders ?loc mk bl (mk ?loc (n,bk,t) c)
| GLocalPattern ((disjpat,ids), id, bk, ty) -> let tm = DAst.make ?loc (GVar id) in (* Distribute the disjunctive patterns over the shared right-hand side *) let eqnl = List.map (fun pat -> CAst.make ?loc (ids,[pat],c)) disjpat in let c = DAst.make ?loc @@ GCases (LetPatternStyle, None, [tm,(Anonymous,None)], eqnl) in
expand_binders ?loc mk bl (mk ?loc (Name id,Explicit,ty) c)
let check_not_notation_variable f ntnvars = (* Check bug #4690 *) match DAst.get f with
| GVar id when Id.Map.mem id ntnvars ->
user_err (str "Prefix @ is not applicable to notation variables.")
| _ ->
()
let option_mem_assoc id = function
| Some (id',c) -> Id.equal id id'
| None -> false
let find_fresh_name renaming (terms,termlists,binders,binderlists) avoid id = let fold1 _ (c, _) accu = Id.Set.union (free_vars_of_constr_expr c) accu in let fold2 _ (l, _) accu = let fold accu c = Id.Set.union (free_vars_of_constr_expr c) accu in List.fold_left fold accu l in let fold3 _ x accu = Id.Set.add x accu in let fvs1 = Id.Map.fold fold1 terms avoid in let fvs2 = Id.Map.fold fold2 termlists fvs1 in let fvs3 = Id.Map.fold fold3 renaming fvs2 in (* TODO binders *)
next_ident_away_from id (fun id -> Id.Set.mem id fvs3)
let is_patvar c = match DAst.get c with
| PatVar _ -> true
| _ -> false
let is_patvar_store store pat = match DAst.get pat with
| PatVar na -> ignore(store (CAst.make ?loc:pat.loc na)); true
| _ -> false
let out_patvar = CAst.map_with_loc (fun ?loc -> function
| CPatAtom (Some qid) when qualid_is_ident qid ->
Name (qualid_basename qid)
| CPatAtom None -> Anonymous
| _ -> assert false)
let canonize_type = function
| None -> None
| Some t as t' -> match DAst.get t with
| GHole (GBinderType _) -> None
| _ -> t'
let set_type ty1 ty2 = match canonize_type ty1, canonize_type ty2 with (* Not a meta-binding binder, we use the type given in the notation *)
| _, None -> ty1 (* A meta-binding binder meta-bound to a possibly-typed pattern *) (* the binder is supposed to come w/o an explicit type in the notation *)
| None, Some _ -> ty2
| Some ty1, Some t2 -> (* An explicitly typed meta-binding binder, not supposed to be a pattern; checked in interp_notation *)
user_err ?loc:t2.CAst.loc Pp.(str "Unexpected type constraint in notation already providing a type constraint.")
let cook_pattern ((disjpat, ids), id) = let store,get = set_temporary_memory () in let pat, na = match disjpat with
| [pat] when is_patvar_store store pat -> let na = get () in None, na.v
| _ -> Some ((ids,disjpat),id), Name id in
pat, na
let extract_pattern_from_binder b = match DAst.get b with
| GLocalDef _ -> user_err ?loc:b.CAst.loc (str "Local definitions not supported here.")
| GLocalAssum (na, _, bk, t) -> None, na, bk, t
| GLocalPattern (patl, id, bk, ty) -> let pat, na = cook_pattern (patl, id) in
pat, na, bk, ty
let traverse_binder intern_pat ntnvars (terms,_,binders,_ as subst) binderopt avoid (renaming,env) na ty = match na with
| Anonymous -> (renaming,env), None, Anonymous, Explicit, set_type ty None
| Name id -> let test_kind = test_kind_tolerant in try (* We instantiate binder name with patterns which may be parsed as terms *) let pat = coerce_to_cases_pattern_expr (fst (Id.Map.find id terms)) in let env,pat,bk,t = intern_pat test_kind ntnvars env Explicit pat in let pat, na = cook_pattern pat in
(renaming,env), pat, na, bk, set_type ty (Some t) with Not_found -> try (* Trying to associate a pattern *) let (pat,bk),(onlyident,scopes) = Id.Map.find id binders in let env = set_env_scopes env scopes in if onlyident then (* Do not try to interpret a variable as a constructor *) let na = out_patvar pat in let env = push_name_env ~dump:true ntnvars [] env na in let ty' = DAst.make @@ GHole (GBinderType na.CAst.v) in
(renaming,env), None, na.v, bk, set_type ty (Some ty') else (* Interpret as a pattern *) let env,pat,bk,t = intern_pat test_kind ntnvars env bk pat in let pat, na = cook_pattern pat in
(renaming,env), pat, na, bk, set_type ty (Some t) with Not_found -> if option_mem_assoc id binderopt then let binder = snd (Option.get binderopt) in let pat, na, bk, t = extract_pattern_from_binder binder in
(renaming,env), pat, na, bk, set_type ty (Some t) else (* Binders not bound in the notation do not capture variables *) (* outside the notation (i.e. in the substitution) *) let id' = find_fresh_name renaming subst avoid id in let renaming = Id.Map.add id id' renaming in
(renaming,env), None, Name id', Explicit, set_type ty None
type binder_action =
| AddLetIn of lname * constr_expr * constr_expr option
| AddTermIter of (constr_expr * subscopes) Names.Id.Map.t
| AddPreBinderIter of Id.t * local_binder_expr (* A binder to be internalized *)
| AddBinderIter of Id.t * extended_glob_local_binder (* A binder already internalized - used for generalized binders *)
| AddNList (* Insert a ".. term .." block *)
let dmap_with_loc f n =
CAst.map_with_loc (fun ?loc c -> f ?loc (DAst.get_thunk c)) n
let error_cannot_coerce_wildcard_term ?loc () =
user_err ?loc Pp.(str "Cannot turn \"_\" into a term.")
let error_cannot_coerce_disjunctive_pattern_term ?loc () =
user_err ?loc Pp.(str "Cannot turn a disjunctive pattern into a term.")
let terms_of_binders bl = let rec term_of_pat pt = dmap_with_loc (fun ?loc -> function
| PatVar (Name id) -> CRef (qualid_of_ident id, None)
| PatVar (Anonymous) -> error_cannot_coerce_wildcard_term ?loc ()
| PatCstr (c,l,_) -> let qid = qualid_of_path ?loc (Nametab.path_of_global (GlobRef.ConstructRef c)) in let hole = CAst.make ?loc @@ CHole (None) in let params = List.make (Inductiveops.inductive_nparams (Global.env()) (fst c)) hole in
CAppExpl ((qid,None),params @ List.map term_of_pat l)) pt in let rec extract_variables l = match l with
| bnd :: l -> let loc = bnd.loc in beginmatch DAst.get bnd with
| GLocalAssum (Name id,_,_,_) -> (CAst.make ?loc @@ CRef (qualid_of_ident ?loc id, None)) :: extract_variables l
| GLocalDef (Name id,_,_,_) -> extract_variables l
| GLocalDef (Anonymous,_,_,_)
| GLocalAssum (Anonymous,_,_,_) -> user_err Pp.(str "Cannot turn \"_\" into a term.")
| GLocalPattern (([u],_),_,_,_) -> term_of_pat u :: extract_variables l
| GLocalPattern ((_,_),_,_,_) -> error_cannot_coerce_disjunctive_pattern_term ?loc () end
| [] -> [] in
extract_variables bl
let flatten_generalized_binders_if_any y l = matchList.rev l with
| [] -> assert false
| l -> (* if l has more than one element, this means we had a generalized binder *) let select_iter a = match DAst.get a with
| GLocalAssum (Name id,_,_,_) when Id.equal id ldots_var -> AddNList
| _ -> AddBinderIter (y,a) in List.map select_iter l
let flatten_binders bl = let dispatch = function
| CLocalAssum (nal,r,bk,t) -> List.map (fun na -> CLocalAssum ([na],r,bk,t)) nal
| a -> [a] in List.flatten (List.map dispatch bl)
let rec adjust_env env = function (* We need to adjust scopes, binder blocks ... to the env expected
at the recursive occurrence; We do an underapproximation... *)
| NProd (_,_,c) -> adjust_env (switch_prod_binders env) c
| NLambda (_,_,c) -> adjust_env (switch_lambda_binders env) c
| NLetIn (_,_,_,c) -> adjust_env env c
| NVar id when Id.equal id ldots_var -> env
| NCast (c,_,_) -> adjust_env env c
| NApp _ -> restart_no_binders env
| NVar _ | NRef _ | NHole _ | NGenarg _ | NCases _ | NLetTuple _ | NIf _
| NRec _ | NSort _ | NProj _ | NInt _ | NFloat _ | NString _ | NArray _
| NList _ | NBinderList _ -> env (* to be safe, but restart should be ok *)
let subst_var loc intern_pat intern ntnvars binders (terms, binderopt, _terminopt) (renaming, env) id = (* subst remembers the delimiters stack in the interpretation *) (* of the notations *) try let (a,scopes) = Id.Map.find id terms in
intern (set_env_scopes env scopes) a with Not_found -> try let (pat,bk),(onlyident,scopes) = Id.Map.find id binders in let env = set_env_scopes env scopes in let test_kind = if onlyident then test_kind_ident_in_notation else test_kind_pattern_in_notation in let env,((disjpat,ids),id),bk,_ty = intern_pat test_kind ntnvars env bk pat in (* TODO: use cast? *) match disjpat with
| [pat] -> glob_constr_of_cases_pattern (Global.env()) pat
| _ -> user_err Pp.(str "Cannot turn a disjunctive pattern into a term.") with Not_found -> try match binderopt with
| Some (x,binder) when Id.equal x id -> let terms = terms_of_binders [binder] in
assert (List.length terms = 1);
intern env (List.hd terms)
| _ -> raise Not_found with Not_found ->
DAst.make ?loc ( try
GVar (Id.Map.find id renaming) with Not_found -> (* Happens for local notation joint with inductive/fixpoint defs *)
GVar id)
let instantiate_notation_constr loc intern intern_pat ntnvars subst infos c = let (terms,termlists,binders,binderlists) = subst in (* when called while defining a notation, avoid capturing the private binders
of the expression by variables bound by the notation (see #3892) *) let avoid = Id.Map.domain ntnvars in let rec aux (terms,binderopt,iteropt as subst') (renaming,env) c = let subinfos = renaming,{env with tmp_scope = []} in match c with
| NVar id when Id.equal id ldots_var -> (* apply the pending sequence of letin, term iterator instances,
binder iterator instances, and eventually terminator *) let rec aux_letin env = function
| [],terminator,_ -> aux (terms,None,None) (renaming,env) terminator
| AddPreBinderIter (y,binder)::rest,terminator,iter -> let env,binders = intern_local_binder_aux ~dump:true intern ntnvars (adjust_env env iter,[]) binder in let binders = flatten_generalized_binders_if_any y binders in
aux_letin env (binders@rest,terminator,iter)
| AddBinderIter (y,binder)::rest,terminator,iter -> (* [y] is the placeholder for the [binder] in [iter] *)
aux (terms,Some (y,binder),Some (rest,terminator,iter)) (renaming,env) iter
| AddTermIter nterms::rest,terminator,iter -> (* This time, the variable [y] is the placeholder for the [binder] in [iter] *)
aux (nterms,None,Some (rest,terminator,iter)) (renaming,env) iter
| AddLetIn (na,c,t)::rest,terminator,iter -> let env,(na,c,t) = intern_letin_binder ~dump:true intern ntnvars (adjust_env env iter) (na,c,t) in
DAst.make ?loc (GLetIn (na,None,c,t,aux_letin env (rest,terminator,iter)))
| AddNList::rest,terminator,iter ->
DAst.make ?loc (GApp (DAst.make ?loc (GVar ldots_var), [aux_letin env (rest,terminator,iter)])) in
aux_letin env (Option.get iteropt)
| NVar id -> subst_var loc intern_pat intern ntnvars binders subst' (renaming, env) id
| NList (x,y,iter,terminator,revert) -> let l,(scopt,subscopes) = (* All elements of the list are in scopes (scopt,subscopes) *) try let l,scopes = Id.Map.find x termlists in
(if revert thenList.rev l else l),scopes with Not_found -> try let (bl,(scopt,subscopes)) = Id.Map.find x binderlists in let env,bl' = List.fold_left (intern_local_binder_aux ~dump:true intern ntnvars) (env,[]) bl in
terms_of_binders (if revert then bl' else List.rev bl'),([],[]) with Not_found ->
anomaly (Pp.str "Inconsistent substitution of recursive notation.") in let select_iter a = match a.CAst.v with
| CRef (qid,None) when qualid_is_ident qid && Id.equal (qualid_basename qid) ldots_var -> AddNList
| _ -> AddTermIter (Id.Map.add y (a,(scopt,subscopes)) terms) in let l = List.map select_iter l in
aux (terms,None,Some (l,terminator,iter)) subinfos (NVar ldots_var)
| NHole (knd) -> let knd = match knd with
| GBinderType (Name id as na) -> let na = try (coerce_to_name (fst (Id.Map.find id terms))).v with Not_found -> try Name (Id.Map.find id renaming) with Not_found -> na in
GBinderType na
| _ -> knd in
DAst.make ?loc @@ GHole (knd)
| NGenarg arg -> let glob_of_term (c, scopes) = let nenv = set_env_scopes env scopes in let gc = intern nenv c in
gc in let glob_of_binder ((c,_bk), (onlyident,(tmp_scope,subscopes))) = let nenv = {env with tmp_scope; scopes = subscopes @ env.scopes} in let test_kind = if onlyident then test_kind_ident_in_notation else test_kind_pattern_in_notation in let _,((disjpat,_),_),_,_ty = intern_pat test_kind ntnvars nenv Explicit c in (* TODO: use cast? *) match disjpat with
| [pat] -> (glob_constr_of_cases_pattern (Global.env()) pat)
| _ -> error_cannot_coerce_disjunctive_pattern_term ?loc:c.loc () in let get_glob id = match Id.Map.find_opt id terms with
| Some term -> Some (glob_of_term term)
| None -> match Id.Map.find_opt id binders with
| Some binder -> Some (glob_of_binder binder)
| None -> None in let arg = Genintern.generic_substitute_notation ntnvars get_glob arg in
DAst.make ?loc @@ GGenarg arg
| NBinderList (x,y,iter,terminator,revert) ->
(try (* All elements of the list are in scopes (scopt,subscopes) *) let (bl,(scopt,subscopes)) = Id.Map.find x binderlists in (* We flatten binders so that we can interpret them at substitution time *) let bl = flatten_binders bl in let bl = if revert thenList.rev bl else bl in (* We isolate let-ins which do not contribute to the repeated pattern *) let l = List.map (function | CLocalDef (na,_,c,t) -> AddLetIn (na,c,t)
| binder -> AddPreBinderIter (y,binder)) bl in (* We stack the binders to iterate or let-ins to insert *)
aux (terms,None,Some (l,terminator,iter)) subinfos (NVar ldots_var) with Not_found ->
anomaly (Pp.str "Inconsistent substitution of recursive notation."))
| NProd (Name id, None, c') when option_mem_assoc id binderopt -> let binder = snd (Option.get binderopt) in
expand_binders ?loc mkGProd [binder] (aux subst' (renaming,env) c')
| NLambda (Name id, None, c') when option_mem_assoc id binderopt -> let binder = snd (Option.get binderopt) in
expand_binders ?loc mkGLambda [binder] (aux subst' (renaming,env) c')
| t ->
glob_constr_of_notation_constr_with_binders ?loc
(traverse_binder intern_pat ntnvars subst binderopt avoid) (aux subst') ~h:binder_status_fun subinfos t in aux (terms,None,None) infos c
(* Turning substitution coming from parsing and based on production into a substitution for interpretation and based on binding/constr
distinction *)
let cases_pattern_of_name {loc;v=na} = let atom = match na with Name id -> Some (qualid_of_ident ?loc id) | Anonymous -> None in
CAst.make ?loc (CPatAtom atom)
let cases_pattern_of_binder_as_constr a = function
| AsAnyPattern | AsStrictPattern -> coerce_to_cases_pattern_expr a
| AsIdent -> cases_pattern_of_id (coerce_to_id a)
| AsName -> cases_pattern_of_name (coerce_to_name a)
let is_onlyident = function
| AsIdent | AsName -> true
| AsAnyPattern | AsStrictPattern -> false
let split_by_type ids (subst : constr_notation_substitution) = let bind id scl l s = match l with
| [] -> assert false
| a::l -> l, Id.Map.add id (a,scl) s in let (terms,termlists,binders,binderlists),subst = List.fold_left (fun ((terms,termlists,binders,binderlists),(terms',termlists',binders',binderlists')) (id,((_,scl),_,typ)) -> match typ with
| NtnTypeConstr -> let terms,terms' = bind id scl terms terms'in
(terms,termlists,binders,binderlists),(terms',termlists',binders',binderlists')
| NtnTypeBinder ntn_binder_kind -> let onlyident,a,terms,binders = match ntn_binder_kind with
| NtnBinderParsedAsConstr k -> let a,terms = List.sep_first terms in
is_onlyident k, (cases_pattern_of_binder_as_constr a k, Explicit), terms, binders
| NtnBinderParsedAsBinder -> let a,binders = List.sep_first binders in false, a, terms, binders
| NtnBinderParsedAsSomeBinderKind k -> let a,binders = List.sep_first binders in
is_onlyident k, a, terms, binders in let binders' = Id.Map.add id (a,(onlyident,scl)) binders'in
(terms,termlists,binders,binderlists),(terms',termlists',binders',binderlists')
| NtnTypeConstrList -> let termlists,termlists' = bind id scl termlists termlists'in
(terms,termlists,binders,binderlists),(terms',termlists',binders',binderlists')
| NtnTypeBinderList ntn_binder_kind -> let l,termlists,binderlists = match ntn_binder_kind with
| NtnBinderParsedAsConstr k -> let l,termlists = List.sep_first termlists in List.map (fun a -> CLocalPattern (cases_pattern_of_binder_as_constr a k)) l, termlists, binderlists
| NtnBinderParsedAsBinder | NtnBinderParsedAsSomeBinderKind _ -> let l,binderlists = List.sep_first binderlists in
l, termlists, binderlists in let binderlists' = Id.Map.add id (l,scl) binderlists'in
(terms,termlists,binders,binderlists),(terms',termlists',binders',binderlists'))
(subst,(Id.Map.empty,Id.Map.empty,Id.Map.empty,Id.Map.empty)) ids in
assert (terms = [] && termlists = [] && binders = [] && binderlists = []);
subst
let split_by_type_pat ?loc ids subst = let bind id (_,scopes) l s = match l with
| [] -> assert false
| a::l -> l, Id.Map.add id (a,scopes) s in let bind_binders id (_,scopes) l s = match l with
| [] -> assert false
| (a,Explicit)::l -> l, Id.Map.add id (a,scopes) s
| (a,(MaxImplicit|NonMaxImplicit))::l -> user_err (str "Implicit arguments not supported.") (* shouldn't arrive *) in let (terms,termlists,binders),subst = List.fold_left (fun ((terms,termlists,binders),(terms',termlists')) (id,(scl,_,typ)) -> match typ with
| NtnTypeConstr | NtnTypeBinder (NtnBinderParsedAsConstr _) -> let terms,terms' = bind id scl terms terms'in
(terms,termlists,binders),(terms',termlists')
| NtnTypeConstrList -> let termlists,termlists' = bind id scl termlists termlists'in
(terms,termlists,binders),(terms',termlists')
| NtnTypeBinder (NtnBinderParsedAsBinder | NtnBinderParsedAsSomeBinderKind _) -> let binders,terms' = bind_binders id scl binders terms'in
(terms,termlists,binders),(terms',termlists')
| NtnTypeBinderList _ -> error_invalid_pattern_notation ?loc ())
(subst,(Id.Map.empty,Id.Map.empty)) ids in
assert (terms = [] && termlists = [] && binders = []);
subst
let intern_notation intern env ntnvars loc ntn fullargs = (* Adjust to parsing of { } *) let ntn,fullargs = contract_curly_brackets ntn fullargs in (* Recover interpretation { } *) let ((ids,c),df) = interp_notation ?loc ntn (env.tmp_scope,env.scopes) in
Dumpglob.dump_notation_location (ntn_loc ?loc fullargs ntn) ntn df; (* Dispatch parsing substitution to an interpretation substitution *) let subst = split_by_type ids fullargs in (* Instantiate the notation *)
instantiate_notation_constr loc intern (intern_cases_pattern_as_binder ~dump:true intern) ntnvars subst (Id.Map.empty, env) c
(**********************************************************************) (* Discriminating between bound variables and global references *)
let string_of_ty = function
| Inductive -> "ind"
| Recursive -> "def"
| Method -> "meth"
| Variable -> "var"
let gvar (loc, id) us = match us with
| None | Some ([],[]) -> DAst.make ?loc @@ GVar id
| Some _ ->
user_err ?loc (str "Variable " ++ Id.print id ++
str " cannot have a universe instance")
let intern_var env (ltacvars,ntnvars) namedctx loc id us = (* Is [id] a notation variable *) if Id.Map.mem id ntnvars then begin ifnot (Id.Map.mem id env.impls) then set_notation_var_scope ?loc id (env.tmp_scope,env.scopes) env.ntn_binding_ids ntnvars;
gvar (loc,id) us end else (* Is [id] registered with implicit arguments *) try let {var_intern_typ=ty; var_uid=uid} = Id.Map.find id env.impls in let tys = string_of_ty ty in
Dumpglob.dump_reference ?loc "<>" uid tys;
gvar (loc,id) us with Not_found -> (* Is [id] bound in current term or is an ltac var bound to constr *) if Id.Set.mem id env.ids || Id.Set.mem id ltacvars.ltac_vars then
gvar (loc,id) us elseif Id.equal id ldots_var (* Is [id] the special variable for recursive notations? *) thenif Id.Map.is_empty ntnvars then error_ldots_var ?loc else gvar (loc,id) us elseif Id.Set.mem id ltacvars.ltac_bound then (* Is [id] bound to a free name in ltac (this is an ltac error message) *)
user_err ?loc
(str "variable " ++ Id.print id ++ str " should be bound to a term.") else (* Is [id] a goal or section variable *) let _ = Environ.lookup_named_ctxt id namedctx in try (* [id] a section variable *) (* Redundant: could be done in intern_qualid *) letref = GlobRef.VarRef id in
Dumpglob.dump_secvar ?loc id; (* this raises Not_found when not a section variable *) (* Someday we should stop relying on Dumglob raising exceptions *)
DAst.make ?loc @@ GRef (ref, us) with e when CErrors.noncritical e -> (* [id] a goal variable *)
gvar (loc,id) us
(**********************************************************************) (* Locating reference, possibly via an abbreviation *)
let locate_reference qid =
Smartlocate.global_of_extended_global (Nametab.locate_extended qid)
let is_global id = try let _ = locate_reference (qualid_of_ident id) intrue with Not_found -> false
let dump_extended_global loc = function
| TrueGlobal ref -> (*feedback_global loc ref;*) Dumpglob.add_glob ?loc ref
| Abbrev sp -> Dumpglob.add_glob_kn ?loc sp
let intern_extended_global_of_qualid qid = let r = Nametab.locate_extended qid in dump_extended_global qid.CAst.loc r; r
let intern_reference qid = let r = try intern_extended_global_of_qualid qid with Not_found as exn -> let _, info = Exninfo.capture exn in
Nametab.error_global_not_found ~info qid in
Smartlocate.global_of_extended_global r
let intern_sort_name ~local_univs = function
| CSProp -> GSProp
| CProp -> GProp
| CSet -> GSet
| CRawType u -> GRawUniv u
| CType qid -> let is_id = qualid_is_ident qid in let local = ifnot is_id then None else Id.Map.find_opt (qualid_basename qid) (snd local_univs.bound) in match local with
| Some u -> GUniv u
| None -> try GUniv (Univ.Level.make (Nametab.locate_universe qid)) with Not_found -> if is_id && local_univs.unb_univs then GLocalUniv (CAst.make ?loc:qid.loc (qualid_basename qid)) else
CErrors.user_err ?loc:qid.loc Pp.(str "Undeclared universe " ++ pr_qualid qid ++ str".")
let intern_qvar ~local_univs = function
| CQAnon loc -> GLocalQVar (CAst.make ?loc Anonymous)
| CRawQVar q -> GRawQVar q
| CQVar qid -> let is_id = qualid_is_ident qid in let local = ifnot is_id then None else Id.Map.find_opt (qualid_basename qid) (fst local_univs.bound) in match local with
| Some u -> GQVar u
| None -> try GQVar (Sorts.QVar.make_global (Nametab.Quality.locate qid)) with Not_found -> if is_id && local_univs.unb_univs then GLocalQVar (CAst.make ?loc:qid.loc (Name (qualid_basename qid))) else
CErrors.user_err ?loc:qid.loc Pp.(str "Undeclared quality " ++ pr_qualid qid ++ str".")
let intern_quality ~local_univs q = match q with
| CQConstant q -> GQConstant q
| CQualVar q -> GQualVar (intern_qvar ~local_univs q)
let intern_sort ~local_univs (q,l) = Option.map (intern_qvar ~local_univs) q,
map_glob_sort_gen (List.map (on_fst (intern_sort_name ~local_univs))) l
let intern_instance ~local_univs = function
| None -> None
| Some (qs, us) -> let qs = List.map (intern_quality ~local_univs) qs in let us = List.map (map_glob_sort_gen (intern_sort_name ~local_univs)) us in
Some (qs, us)
let intern_name_alias = function
| { CAst.v = CRef(qid,u) } -> let r = try Some (intern_extended_global_of_qualid qid) with Not_found -> None in Option.bind r Smartlocate.global_of_extended_global |> Option.map (fun r -> r, intern_instance ~local_univs:empty_local_univs u)
| _ -> None
let intern_field_ref qid = match
Smartlocate.global_of_extended_global (intern_extended_global_of_qualid qid) |> Option.map (function
| GlobRef.ConstRef c as x -> x, Structure.find_from_projection c
| _ -> raise Not_found) with
| exception Not_found ->
Loc.raise ?loc:qid.loc (InternalizationError (NotAProjection qid))
| None ->
Loc.raise ?loc:qid.loc (InternalizationError (NotAProjection qid))
| Some x -> x
let find_appl_head_data env (_,ntnvars) c = let loc = c.CAst.loc in match DAst.get c with
| GVar id when not (Id.Map.mem id ntnvars) ->
(try let {var_impls=impls; var_scopes=argsc} = Id.Map.find id env.impls in
Some (CAst.make ?loc (GlobRef.VarRef id)), make_implicits_list impls, argsc with Not_found -> None, [], [])
| GRef (ref,_) -> let impls = implicits_of_global refin let scopes = find_arguments_scope refin
Some (CAst.make ?loc ref), impls, scopes
| GApp (r, l) -> beginmatch DAst.get r with
| GRef (ref,_) -> let n = List.length l in let impls = implicits_of_global refin let scopes = find_arguments_scope refin
Some (CAst.make ?loc ref),
(if n = 0 then [] elseList.map (drop_first_implicits n) impls), List.skipn_at_best n scopes
| _ -> None, [], [] end
| GProj ((cst,_), l, c) -> letref = GlobRef.ConstRef cst in let n = List.length l + 1 in let impls = implicits_of_global refin let scopes = find_arguments_scope refin
Some (CAst.make ?loc (GlobRef.ConstRef cst)), List.map (drop_first_implicits n) impls, List.skipn_at_best n scopes
| _ -> None, [], []
let error_not_enough_arguments ?loc =
user_err ?loc (str "Abbreviation is not applied enough.")
let check_no_explicitation l = let is_unset (a, b) = match b with None -> false | Some _ -> truein let l = List.filter is_unset l in match l with
| [] -> ()
| (_, None) :: _ -> assert false
| (_, Some {loc}) :: _ ->
user_err ?loc (str"Unexpected explicitation of the argument of an abbreviation.")
let find_projection_data c = match DAst.get c with
| GApp (r, l) -> beginmatch DAst.get r with
| GRef (GlobRef.ConstRef cst,us) -> Some (cst, us, l, Structure.projection_nparams cst)
| _ -> None end
| GRef (GlobRef.ConstRef cst,us) -> Some (cst, us, [], Structure.projection_nparams cst)
| _ -> None
let glob_sort_of_level (level: glob_level) : glob_sort = match level with
| UAnonymous _ as l -> None, l
| UNamed id -> None, UNamed [id, 0]
(* Is it a global reference or a syntactic definition? *) let intern_qualid ?(no_secvar=false) qid intern env ntnvars us args = let loc = qid.loc in match intern_extended_global_of_qualid qid with
| TrueGlobal (GlobRef.VarRef _) when no_secvar -> (* Rule out section vars since these should have been found by intern_var *) raise Not_found
| TrueGlobal ref -> (DAst.make ?loc @@ GRef (ref, us)), Some ref, args
| Abbrev sp -> let (ids,c) = Abbreviation.search_abbreviation sp in let nids = List.length ids in ifList.length args < nids then error_not_enough_arguments ?loc; let args1,args2 = List.chop nids args in
check_no_explicitation args1; let subst = split_by_type ids (List.map fst args1,[],[],[]) in let infos = (Id.Map.empty, env) in let c = instantiate_notation_constr loc intern (intern_cases_pattern_as_binder ~dump:true intern) ntnvars subst infos c in let loc = c.loc in let err () =
user_err ?loc (str "Notation " ++ pr_qualid qid
++ str " cannot have a universe instance,"
++ str " its expanded head does not start with a reference") in let c = match us, DAst.get c with
| None, _ -> c
| Some _, GRef (ref, None) -> DAst.make ?loc @@ GRef (ref, us)
| Some _, GApp (r, arg) -> let loc' = r.CAst.loc in beginmatch DAst.get r with
| GRef (ref, None) ->
DAst.make ?loc @@ GApp (DAst.make ?loc:loc' @@ GRef (ref, us), arg)
| _ -> err () end
| Some ([],[s]), GSort gs when Glob_ops.(glob_sort_eq glob_Type_sort gs) ->
DAst.make ?loc @@ GSort (glob_sort_of_level s)
| Some ([],[_old_level]), GSort _new_sort -> (* TODO: add old_level and new_sort to the error message *)
user_err ?loc (str "Cannot change universe level of notation " ++ pr_qualid qid)
| Some _, _ -> err () in
c, None, args2
let intern_qualid_for_pattern test_global intern_not qid pats = match Nametab.locate_extended_nowarn qid with
| TrueGlobal g as xref ->
test_global g;
Nametab.is_warned_xref xref |> Option.iter (fun warn -> Nametab.warn_user_warn_xref ?loc:qid.loc warn (TrueGlobal g));
dump_extended_global qid.loc (TrueGlobal g);
(g, false, Some [], pats)
| Abbrev kn as xref -> letfilter (vars,a) = match a with
| NRef (g,_) -> (* Convention: do not deactivate implicit arguments and scopes for further arguments *)
test_global g; let () = assert (List.is_empty vars) in
Some (g, Some [], pats)
| NApp (NRef (g,_),[]) -> (* special case: abbreviation for @Cstr deactivates implicit arguments *)
test_global g; let () = assert (List.is_empty vars) in
Some (g, None, pats)
| NApp (NRef (g,_),args) -> (* Convention: do not deactivate implicit arguments and scopes for further arguments *)
test_global g; let nvars = List.length vars in ifList.length pats < nvars then error_not_enough_arguments ?loc:qid.loc; let pats1,pats2 = List.chop nvars pats in let subst = split_by_type_pat vars (pats1,[],[]) in let args = List.map (intern_not subst) args in
Some (g, Some args, pats2)
| _ -> None in match Abbreviation.search_filtered_abbreviation filter kn with
| Some (g, pats1, pats2) ->
Nametab.is_warned_xref xref
|> Option.iter (fun warn -> Nametab.warn_user_warn_xref ?loc:qid.loc warn (Abbrev kn));
dump_extended_global qid.loc (Abbrev kn);
(g, true, pats1, pats2)
| None -> raise Not_found
let warn_nonprimitive_projection =
CWarnings.create ~name:"nonprimitive-projection-syntax" ~category:CWarnings.CoreCategories.syntax ~default:CWarnings.Disabled
Pp.(fun f -> pr_qualid f ++ str " used as a primitive projection but is not one.")
let error_nonprojection_syntax ?loc qid =
CErrors.user_err ?loc Pp.(pr_qualid qid ++ str" is not a projection.")
let check_applied_projection isproj realref qid = if isproj then letopen GlobRef in let is_prim = match realref with
| None | Some (IndRef _ | ConstructRef _ | VarRef _) -> false
| Some (ConstRef c) -> if PrimitiveProjections.mem c thentrue elseifStructure.is_projection c thenfalse else error_nonprojection_syntax ?loc:qid.loc qid (* TODO check projargs, note we will need implicit argument info *) in ifnot is_prim then warn_nonprimitive_projection ?loc:qid.loc qid
let intern_applied_reference ~isproj intern env namedctx (_, ntnvars as lvar) us args qid = let loc = qid.CAst.loc in let us = intern_instance ~local_univs:env.local_univs us in if qualid_is_ident qid then try let res = intern_var env lvar namedctx loc (qualid_basename qid) us in
check_applied_projection isproj None qid;
res, args with Not_found -> try let res, realref, args2 = intern_qualid ~no_secvar:true qid intern env ntnvars us args in
check_applied_projection isproj realref qid;
res, args2 with Not_found as exn -> (* Extra allowance for non globalizing functions *) ifOption.default true env.strict_check || List.exists (fun (_,e) -> Option.has_some e) args then let _, info = Exninfo.capture exn in
Nametab.error_global_not_found ~info qid else (* check_applied_projection ?? *)
gvar (loc,qualid_basename qid) us, args else try let res, realref, args2 = intern_qualid qid intern env ntnvars us args in
check_applied_projection isproj realref qid;
res, args2 with Not_found as exn -> let _, info = Exninfo.capture exn in
Nametab.error_global_not_found ~info qid
let interp_reference vars r = let r,_ =
intern_applied_reference ~isproj:false (fun _ -> error_not_enough_arguments ?loc:None)
{ids = Id.Set.empty; strict_check = Some true;
local_univs = empty_local_univs;(* <- doesn't matter here *)
tmp_scope = []; scopes = []; impls = empty_internalization_env;
binder_block_names = None; ntn_binding_ids = Id.Set.empty}
Environ.empty_named_context_val
(vars, Id.Map.empty) None [] r in r
(** Intermediate type common to the patterns of the "in" and of the
"with" clause of "match" *)
type'a raw_cases_pattern_expr_r =
| RCPatAlias of'a raw_cases_pattern_expr * lname
| RCPatCstr of GlobRef.t * 'a raw_cases_pattern_expr list
| RCPatAtom of (lident * (Notation_term.tmp_scope_name list * Notation_term.scope_name list)) option
| RCPatOr of'a raw_cases_pattern_expr list and'a raw_cases_pattern_expr = ('a raw_cases_pattern_expr_r, 'a) DAst.t
(** {6 Elementary bricks } *)
let apply_scope_env env = function
| [] -> {env with tmp_scope = []}, []
| sc::scl -> {env with tmp_scope = sc}, scl
let rec simple_adjust_scopes n scopes = (* Note: there can be less scopes than arguments but also more scopes *) (* than arguments because extra scopes are used in the presence of *) (* coercions to funclass *) if Int.equal n 0 then [] elsematch scopes with
| [] -> [] :: simple_adjust_scopes (n-1) []
| sc::scopes -> sc :: simple_adjust_scopes (n-1) scopes
let rec adjust_to_up l l' default = match l, l' with
| l, [] -> []
| [], l -> l
| true::l, l' -> default :: adjust_to_up l l' default
| false::l, y::l' -> y :: adjust_to_up l l' default
let rec adjust_to_down l l' default = match l, l' with
| [], l -> []
| true::l, l' -> adjust_to_down l l' default
| false::l, [] -> default :: adjust_to_down l [] default
| false::l, y::l' -> y :: adjust_to_down l l' default
let check_linearity loc ids = matchList.duplicates (fun id1 id2 -> Id.equal id1.v id2.v) ids with
| id::_ ->
Loc.raise ?loc (InternalizationError (NonLinearPattern id.v))
| [] ->
()
(* Match the number of pattern against the number of matched args *) let check_number_of_pattern loc n l = let p = List.length l in ifnot (Int.equal n p) then
Loc.raise ?loc (InternalizationError (BadPatternsNumber (n,p)))
let check_or_pat_variables loc ids idsl = let eq_id {v=id} {v=id'} = Id.equal id id'in (* Collect remaining patterns which do not have the same variables as the first pattern *) let idsl = List.filter (fun ids' -> not (List.eq_set eq_id ids ids')) idsl in match idsl with
| ids'::_ -> (* Look for an [id] which is either in [ids] and not in [ids'] or in [ids'] and not in [ids] *) let ids'' = List.subtract eq_id ids ids' in let ids'' = if ids'' = [] thenList.subtract eq_id ids' ids else ids'' in
user_err ?loc
(strbrk "The components of this disjunctive pattern must bind the same variables (" ++
Id.print (List.hd ids'').v ++ strbrk " is not bound in all patterns).")
| [] -> ()
let error_wrong_numarg ?loc g ~expanded ~nargs ~expected_nassums ~expected_ndecls = let env = Global.env() in match g with
| GlobRef.ConstructRef cstr -> error_wrong_numarg_constructor ?loc env ~cstr ~expanded ~nargs ~expected_nassums ~expected_ndecls
| GlobRef.IndRef ind -> error_wrong_numarg_inductive ?loc env ~ind ~expanded ~nargs ~expected_nassums ~expected_ndecls
| _ -> assert false
let error_wrong_numarg_with_notation_patterns ?loc g nargs tags =
error_wrong_numarg ?loc g ~expanded:true ~nargs
~expected_nassums:(List.count (fun x -> not x) tags)
~expected_ndecls:(List.length tags)
let check_has_letin ?loc g expanded nargs nimps tags = let expected_ndecls = List.length tags - nimps in let expected_nassums = List.count (fun x -> not x) tags - nimps in if nargs = expected_nassums thenfalse elseif nargs = expected_ndecls thentrueelse
error_wrong_numarg ?loc g ~expanded ~nargs ~expected_nassums ~expected_ndecls
(** Do not raise NotEnoughArguments thanks to preconditions*) let chop_params_pattern loc ind args with_letin = let nparams = if with_letin then Inductiveops.inductive_nparamdecls (Global.env()) ind else Inductiveops.inductive_nparams (Global.env()) ind in
assert (nparams <= List.length args); let params,args = List.chop nparams args in List.iter (fun c -> match DAst.get c with
| PatVar Anonymous -> ()
| PatVar _ | PatCstr(_,_,_) -> error_parameter_not_implicit ?loc:c.CAst.loc) params;
args
let find_constructor_head ?loc ref = letopen GlobRef in matchrefwith
| ConstructRef cstr -> cstr
| IndRef _ -> let error = str "There is an inductive name deep in a \"in\" clause."in
user_err ?loc error
| ConstRef _ | VarRef _ -> let error = str "This reference is not a constructor."in
user_err ?loc error
let find_inductive_head ?loc ref = letopen GlobRef in matchrefwith
| IndRef ind -> ind
| _ -> error_bad_inductive_type ?loc ()
let find_pattern_variable qid = if qualid_is_ident qid then qualid_basename qid else Loc.raise ?loc:qid.CAst.loc (InternalizationError(NotAConstructor qid))
let check_duplicate ?loc fields = let eq (ref1, _) (ref2, _) = qualid_eq ref1 ref2 in let dups = List.duplicates eq fields in match dups with
| [] -> ()
| (r, _) :: _ ->
user_err ?loc (str "This record defines several times the field " ++
pr_qualid r ++ str ".")
(** [sort_fields ~complete loc fields completer] expects a list [fields] of field assignments [f = e1; g = e2; ...], where [f, g] are fields of a record and [e1] are "values" (either terms, when interning a record construction, or patterns, when intering record pattern-matching). It will sort the fields according to the record declaration order (which is important when type-checking them in presence of dependencies between fields). If the parameter [complete] is true, we require the assignment to be complete: all the fields of the record must be present in the assignment. Otherwise the record assignment may be partial (in a pattern, we may match on some fields only), and we call the function [completer] to fill the missing fields; the returned
field assignment list is always complete. *) let sort_fields genv ~complete loc fields completer = match fields with
| [] -> None
| (first_field_ref, _):: _ -> let (first_field_glob_ref, record) = intern_field_ref first_field_ref in (* the number of parameters *) let nparams = record.Structure.nparams in (* the reference constructor of the record *) let base_constructor = GlobRef.ConstructRef (record.Structure.name,1) in let () = check_duplicate ?loc fields in let build_proj idx proj = if proj.Structure.proj_body = None && complete then (* we don't want anonymous fields *)
user_err ?loc (str "This record contains anonymous fields.") else
(idx, proj.Structure.proj_body, proj.Structure.proj_true) in let proj_list = List.map_i build_proj 1 record.Structure.projections in (* now we want to have all fields assignments indexed by their place in
the constructor *) let rec index_fields fields remaining_projs acc = match fields with
| (field_ref, field_value) :: fields -> let field_glob_ref,this_field_record = intern_field_ref field_ref in let remaining_projs, (field_index, _, regular) = let the_proj = function
| (idx, Some glob_id, _) -> Environ.QGlobRef.equal genv field_glob_ref (GlobRef.ConstRef glob_id)
| (idx, None, _) -> falsein try CList.extract_first the_proj remaining_projs with Not_found ->
Loc.raise ?loc (InternalizationError(ProjectionsOfDifferentRecords (record, this_field_record))) in ifnot regular && complete then (* "regular" is false when the field is defined by a let-in in the record declaration
(its value is fixed from other fields). *)
user_err ?loc (str "No local fields allowed in a record construction.");
Dumpglob.add_glob ?loc:field_ref.CAst.loc field_glob_ref;
index_fields fields remaining_projs ((field_index, field_value) :: acc)
| [] -> let remaining_fields = let complete_field (idx, field_ref, regular) = ifnot regular && complete then (* For terms, we keep only regular fields *)
None else
Some (idx, completer idx field_ref (record.Structure.name,1)) in List.map_filter complete_field remaining_projs in List.rev_append remaining_fields acc in let unsorted_indexed_fields = index_fields fields proj_list [] in let sorted_indexed_fields = let cmp_by_index (i, _) (j, _) = Int.compare i j in List.sort cmp_by_index unsorted_indexed_fields in let sorted_fields = List.map snd sorted_indexed_fields in
Some (nparams, base_constructor, sorted_fields)
(** {6 Manage multiple aliases} *)
type alias = {
alias_ids : lident list;
alias_map : Id.t Id.Map.t;
}
(* [merge_aliases] returns the sets of all aliases encountered at this
point and a substitution mapping extra aliases to the first one *) let merge_aliases aliases {loc;v=na} = match na with
| Anonymous -> aliases
| Name id -> let alias_ids = List.add_set (fun id1 id2 -> Id.equal id1.v id2.v) (make ?loc id) aliases.alias_ids in (* Note: assumes that add_set adds in front, see alias_of *) let alias_map = match aliases.alias_ids with
| [] -> aliases.alias_map
| {v=id'} :: _ -> Id.Map.add id id' aliases.alias_map in
{ alias_ids; alias_map; }
let alias_of als = match als.alias_ids with
| [] -> Anonymous
| l -> Name (List.last l).v
(** {6 Expanding notations }
@returns a raw_case_pattern_expr : - no notations and syntactic definition - global reference and identifier instead of reference
*)
let merge_subst s1 s2 = Id.Map.fold Id.Map.add s1 s2
let product_of_cases_patterns aliases idspl = (* each [pl] is a disjunction of patterns over common identifiers [ids] *) (* We stepwise build a disjunction of patterns [ptaill] over common [ids'] *) List.fold_right (fun (ids,pl) (ids',ptaill) ->
(ids @ ids', (* Cartesian prod of the or-pats for the nth arg and the tail args *) List.flatten ( List.map (fun (subst,p) -> List.map (fun (subst',ptail) -> (merge_subst subst subst',p::ptail)) ptaill) pl)))
idspl (aliases.alias_ids,[aliases.alias_map,[]])
let rec subst_pat_iterator y t = DAst.(map (function
| RCPatAtom id as p -> beginmatch id with Some ({v=x},_) when Id.equal x y -> DAst.get t | _ -> p end
| RCPatCstr (id,l) ->
RCPatCstr (id,List.map (subst_pat_iterator y t) l)
| RCPatAlias (p,a) -> RCPatAlias (subst_pat_iterator y t p,a)
| RCPatOr pl -> RCPatOr (List.map (subst_pat_iterator y t) pl)))
let is_non_zero c = match c with
| { CAst.v = CPrim (Number p) } -> not (NumTok.Signed.is_zero p)
| _ -> false
let is_non_zero_pat c = match c with
| { CAst.v = CPatPrim (Number p) } -> not (NumTok.Signed.is_zero p)
| _ -> false
type global_reference_test = {
for_ind : bool;
test_kind : ?loc:Loc.t -> GlobRef.t -> unit
}
let drop_notations_pattern (test_kind_top,test_kind_inner) genv env pat = (* At toplevel, Constructors and Inductives are accepted, in recursive calls
only constructor are allowed *) let ensure_kind {test_kind} ?loc g = try test_kind ?loc g with Not_found ->
error_invalid_pattern_notation ?loc () in (* [rcp_of_glob] : from [glob_constr] to [raw_cases_pattern_expr] *) let make_pars ?loc g = let env = Global.env () in let n = match g with
| GlobRef.ConstructRef (ind,_) -> Inductiveops.inductive_nparams env ind
| _ -> 0 in List.make n (DAst.make ?loc @@ RCPatAtom None) in (* Check Ind/Construct structure of patterns for primitive notation *) let rec check_allowed_ref_in_pat test_kind = DAst.(with_loc_val (fun ?loc -> function
| GVar _ | GHole _ -> ()
| GRef (g,_) -> test_kind.test_kind ?loc g
| GApp (f, l) -> beginmatch DAst.get f with
| GRef (g, _) ->
test_kind.test_kind ?loc g; let nparams = match g with
| IndRef ind | ConstructRef (ind,_) -> Inductiveops.inductive_nparams (Global.env ()) ind
| _ -> assert falsein let l = tryList.skipn nparams l with Failure _ -> raise Not_found in List.iter (check_allowed_ref_in_pat test_kind_inner) l
| _ -> raise Not_found end
| _ -> raise Not_found)) in (* Interpret a primitive notation (part of Glob_ops.cases_pattern_of_glob_constr) *) let rec rcp_of_glob scopes x = DAst.(map_with_loc (fun ?loc -> function
| GVar id -> RCPatAtom (Some (CAst.make ?loc id,scopes))
| GHole _ -> RCPatAtom None
| GRef (g,_) -> RCPatCstr (g, in_patargs ?loc scopes g truefalse [] [])
| GApp (r, l) -> beginmatch DAst.get r with
| GRef (g,_) -> let allscs = find_arguments_scope g in let allscs = simple_adjust_scopes (List.length l) allscs in let params = make_pars ?loc g in(* Rem: no letins *) let nparams = List.length params in let allscs = List.skipn nparams allscs in let l = List.skipn nparams l in let pl = List.map2 (fun sc a -> rcp_of_glob (sc,snd scopes) a) allscs l in
RCPatCstr (g, in_patargs ?loc scopes g truefalse (params@pl) [])
| _ ->
CErrors.anomaly Pp.(str "Invalid return pattern from Notation.interp_prim_token_cases_pattern_expr.") end
| _ -> CErrors.anomaly Pp.(str "Invalid return pattern from Notation.interp_prim_token_cases_pattern_expr."))) x and drop_abbrev {test_kind} ?loc scopes qid add_par_if_no_ntn_with_par no_impl pats = try if qualid_is_ident qid && Option.cata (Id.Set.mem (qualid_basename qid)) false env.pat_ids && List.is_empty pats then raise Not_found; let intern_not subst pat = in_not test_kind_inner qid.loc scopes subst [] pat in let g, expanded, ntnpats, pats = intern_qualid_for_pattern (test_kind ?loc) intern_not qid pats in match ntnpats with
| None -> (* deactivate implicit *) let ntnpats = if add_par_if_no_ntn_with_par then make_pars ?loc g else [] in
Some (g, in_patargs ?loc scopes g expanded true ntnpats pats)
| Some ntnpats -> let ntnpats = if add_par_if_no_ntn_with_par && ntnpats = [] then make_pars ?loc g else ntnpats in
Some (g, in_patargs ?loc scopes g expanded no_impl ntnpats pats) with Not_found -> None and in_pat ({for_ind} as test_kind) scopes pt = letopen CAst in let loc = pt.loc in (* The two policies implied by asymmetric pattern mode *) let add_par_if_no_ntn_with_par = get_asymmetric_patterns () && not for_ind in let no_impl = get_asymmetric_patterns () && not for_ind in match pt.v with
| CPatAlias (p, id) -> DAst.make ?loc @@ RCPatAlias (in_pat test_kind scopes p, id)
| CPatRecord l -> let sorted_fields =
sort_fields genv ~complete:false loc l (fun _idx fieldname constructor -> CAst.make ?loc @@ CPatAtom None) in beginmatch sorted_fields with
| None -> DAst.make ?loc @@ RCPatAtom None
| Some (n, head, pl) -> let pars = make_pars ?loc head in let pats = in_patargs ?loc scopes head truetrue pars pl in
DAst.make ?loc @@ RCPatCstr(head, pats) end
| CPatCstr (head, None, pl) -> begin match drop_abbrev test_kind ?loc scopes head add_par_if_no_ntn_with_par no_impl pl with
| Some (g,pl) -> DAst.make ?loc @@ RCPatCstr(g, pl)
| None -> Loc.raise ?loc (InternalizationError (NotAConstructor head)) end
| CPatCstr (qid, Some expl_pl, pl) -> begin match drop_abbrev test_kind ?loc scopes qid falsetrue (expl_pl@pl) with
| Some (g,pl) -> DAst.make ?loc @@ RCPatCstr (g, pl)
| None -> Loc.raise ?loc (InternalizationError (NotAConstructor qid)) end
| CPatNotation (_,(InConstrEntry,"- _"),([a],[],[]),[]) when is_non_zero_pat a -> let p = match a.CAst.v with CPatPrim (Number (_, p)) -> p | _ -> assert falsein let pat, _df = Notation.interp_prim_token_cases_pattern_expr ?loc
(check_allowed_ref_in_pat test_kind) (Number (SMinus,p)) scopes in
rcp_of_glob scopes pat
| CPatNotation (_,(InConstrEntry,"( _ )"),([a],[],[]),[]) ->
in_pat test_kind scopes a
| CPatNotation (_,ntn,fullargs,extrargs) -> let ntn,(terms,termlists,binders) = contract_curly_brackets_pat ntn fullargs in let ((ids',c),df) = Notation.interp_notation ?loc ntn scopes in let subst = split_by_type_pat ?loc ids' (terms,termlists,binders) in
Dumpglob.dump_notation_location (patntn_loc ?loc fullargs ntn) ntn df;
in_not test_kind loc scopes subst extrargs c
| CPatDelimiters (depth, key, e) -> let sc = find_delimiters_scope ?loc key in let scopes = match depth with
| DelimOnlyTmpScope -> [sc], snd scopes
| DelimUnboundedScope -> [], sc::snd scopes in
in_pat test_kind scopes e
| CPatPrim p -> let pat, _df = Notation.interp_prim_token_cases_pattern_expr ?loc
(check_allowed_ref_in_pat test_kind) p scopes in
rcp_of_glob scopes pat
| CPatAtom (Some id) -> begin match drop_abbrev test_kind ?loc scopes id add_par_if_no_ntn_with_par no_impl [] with
| Some (g, pl) -> DAst.make ?loc @@ RCPatCstr (g, pl)
| None -> DAst.make ?loc @@ RCPatAtom (Some ((make ?loc @@ find_pattern_variable id),scopes)) end
| CPatAtom None -> DAst.make ?loc @@ RCPatAtom None
| CPatOr pl -> DAst.make ?loc @@ RCPatOr (List.map (in_pat test_kind scopes) pl)
| CPatCast (_,_) -> (* We raise an error if the pattern contains a cast, due to current restrictions on casts in patterns. Cast in patterns are supported only in local binders and only at for_ind level. The only reason they are in the [cases_pattern_expr] type is that the parser needs to factor the "c : t" notation with user defined notations. In the long term, we will try to support such casts everywhere, and perhaps use them to print the domains of lambdas in the encoding of match in constr. This check is here and not in the parser because it would require
duplicating the levels of the [pattern] rule. *)
CErrors.user_err ?loc (Pp.strbrk "Casts are not supported in this pattern.") and in_pat_sc scopes x = in_pat test_kind_inner (x,snd scopes) and in_patargs ?loc scopes
gr (* head of the pattern *)
expanded (* tell if comes from a notation (for error reporting) *)
no_impl (* tell if implicit are not expected (for asymmetric patterns, or @, or {| |} *)
ntnpats (* prefix of patterns obtained by expansion of notations or parameter insertion *)
pats (* user given patterns *)
= let default = DAst.make ?loc @@ RCPatAtom None in let npats = List.length pats in let n = List.length ntnpats in let ntnpats_with_letin, tags = let tags = match gr with
| GlobRef.ConstructRef cstr -> constructor_alltags (Global.env()) cstr
| GlobRef.IndRef ind -> inductive_alltags (Global.env()) ind
| _ -> assert falsein let ntnpats_with_letin = adjust_to_up tags ntnpats default in let tags = tryList.skipn (List.length ntnpats_with_letin) tags with Failure _ ->
error_wrong_numarg_with_notation_patterns ?loc gr (n+npats) tags in
ntnpats_with_letin, tags in let imps = let imps = if no_impl then [] else let impls_st = implicits_of_global gr in if Int.equal n 0 then select_impargs_size npats impls_st elseList.skipn_at_best n (select_stronger_impargs impls_st) in
adjust_to_down tags imps None in let subscopes = adjust_to_down tags (List.skipn_at_best n (find_arguments_scope gr)) [] in let has_letin = check_has_letin ?loc gr expanded npats (List.count is_status_implicit imps) tags in let rec aux imps subscopes tags pats = match imps, subscopes, tags, pats with
| _, _, true::tags, p::pats when has_letin ->
in_pat_sc scopes [] p :: aux imps subscopes tags pats
| _, _, true::tags, _ ->
default :: aux imps subscopes tags pats
| imp::imps, sc::subscopes, false::tags, _ when is_status_implicit imp ->
default :: aux imps subscopes tags pats
| imp::imps, sc::subscopes, false::tags, p::pats ->
in_pat_sc scopes sc p :: aux imps subscopes tags pats
| _, _, [], [] -> []
| _ -> assert falsein
ntnpats_with_letin @ aux imps subscopes tags pats and in_not test_kind loc scopes (terms,termlists as fullsubst) args = function
| NVar id -> begin (* subst remembers the delimiters stack in the interpretation *) (* of the notations *) try let (a,(scopt,subscopes)) = Id.Map.find id terms in
in_pat test_kind (scopt,subscopes@snd scopes) (mkAppPattern ?loc a args) with Not_found -> if Id.equal id ldots_var then ifList.is_empty args then
DAst.make ?loc @@ RCPatAtom (Some ((make ?loc id),scopes)) else
user_err (str "Recursive notations with arguments not supported in patterns.") else
anomaly (str "Unbound pattern notation variable: " ++ Id.print id ++ str ".") end
| NApp (NVar id,ntnpl) ->
user_err ?loc (str "Notations with an applied head variable not supported in patterns.")
| NRef (g,_) ->
ensure_kind test_kind ?loc g;
DAst.make ?loc @@ RCPatCstr (g, in_patargs ?loc scopes g truefalse [] args)
| NApp (NRef (g,_),ntnpl) ->
ensure_kind test_kind ?loc g; let ntnpl = List.map (in_not test_kind_inner loc scopes fullsubst []) ntnpl in let no_impl = (* Convention: if notation is @f, encoded as NApp(Nref g,[]), then
implicit arguments are not inherited *)
ntnpl = [] in
DAst.make ?loc @@ RCPatCstr (g, in_patargs ?loc scopes g true no_impl ntnpl args)
| NList (x,y,iter,terminator,revert) -> ifnot (List.is_empty args) then user_err ?loc
(strbrk "Application of arguments to a recursive notation not supported in patterns.");
(try (* All elements of the list are in scopes (scopt,subscopes) *) let (l,(scopt,subscopes)) = Id.Map.find x termlists in let termin = in_not test_kind_inner loc scopes fullsubst [] terminator in List.fold_right (fun a t -> let nterms = Id.Map.add y (a, (scopt, subscopes)) terms in let u = in_not test_kind_inner loc scopes (nterms, termlists) [] iter in
subst_pat_iterator ldots_var t u)
(if revert thenList.rev l else l) termin with Not_found ->
anomaly (Pp.str "Inconsistent substitution of recursive notation."))
| NHole _ -> ifnot (List.is_empty args) then user_err ?loc (str "Such pattern cannot have arguments.");
DAst.make ?loc @@ RCPatAtom None
| NGenarg _ ->
user_err ?loc (str "Quotations not supported in patterns.")
| t -> error_invalid_pattern_notation ?loc () in in_pat test_kind_top env.pat_scopes pat
let rec intern_pat genv ntnvars aliases pat = let loc = pat.loc in match DAst.get pat with
| RCPatAlias (p, id) -> let aliases' = merge_aliases aliases id in
intern_pat genv ntnvars aliases' p
| RCPatCstr (head, pl) -> let c = find_constructor_head ?loc head in let idslpl = List.map (intern_pat genv ntnvars empty_alias) pl in let (ids',pll) = product_of_cases_patterns aliases idslpl in let pl' = List.map (fun (asubst,pl) ->
(asubst, DAst.make ?loc @@ PatCstr (c,chop_params_pattern loc (fst c) pl true,alias_of aliases))) pll in
ids',pl'
| RCPatAtom (Some ({loc;v=id},scopes)) -> let aliases = merge_aliases aliases (make ?loc @@ Name id) in
set_var_is_binder ?loc id ntnvars;
(aliases.alias_ids,[aliases.alias_map, DAst.make ?loc @@ PatVar (alias_of aliases)]) (* TO CHECK: aura-t-on id? *)
| RCPatAtom None -> let { alias_ids = ids; alias_map = asubst; } = aliases in
(ids, [asubst, DAst.make ?loc @@ PatVar (alias_of aliases)])
| RCPatOr pl ->
assert (not (List.is_empty pl)); let pl' = List.map (intern_pat genv ntnvars aliases) pl in let (idsl,pl') = List.split pl'in let ids = List.hd idsl in List.iter2 check_linearity (List.map (fun x -> x.CAst.loc) pl) idsl;
check_or_pat_variables loc ids (List.tl idsl);
(ids,List.flatten pl')
let intern_cases_pattern test_kind genv ntnvars env aliases pat = lettest = {for_ind=false;test_kind} in
intern_pat genv ntnvars aliases
(drop_notations_pattern (test,test) genv env pat)
let _ =
intern_cases_pattern_fwd := fun test_kind ntnvars env p ->
intern_cases_pattern test_kind (Global.env ()) ntnvars env empty_alias p
let intern_ind_pattern genv ntnvars env pat = let test_kind_top ?loc = function
| GlobRef.IndRef _ -> ()
| GlobRef.ConstructRef _ | GlobRef.ConstRef _ | GlobRef.VarRef _ -> (* A non-inductive global reference at top is an error *)
error_invalid_pattern_notation ?loc () in let test_kind_inner ?loc = function
| GlobRef.ConstructRef _ -> ()
| GlobRef.IndRef _ | GlobRef.ConstRef _ | GlobRef.VarRef _ -> (* A non-constructor global reference deep in a pattern is seen as a variable *) raise Not_found in let no_not = try let test_top = {for_ind=true;test_kind=test_kind_top} in let test_inner = {for_ind=false;test_kind=test_kind_inner} in
drop_notations_pattern (test_top,test_inner) genv env pat with InternalizationError (NotAConstructor _) as exn -> let _, info = Exninfo.capture exn in
error_bad_inductive_type ~info () in let loc = no_not.CAst.loc in match DAst.get no_not with
| RCPatCstr (head, pl) -> let ind = find_inductive_head ?loc head in let idslpl = List.map (intern_pat genv ntnvars empty_alias) pl in
(match product_of_cases_patterns empty_alias idslpl with
| ids,[asubst,pl] -> (ind,ids,asubst,chop_params_pattern loc ind pl true)
| _ -> error_bad_inductive_type ?loc ())
| x -> error_bad_inductive_type ?loc ()
(**********************************************************************) (* Utilities for application *)
let get_implicit_name n imps = Impargs.name_of_implicit (List.nth imps (n-1))
let set_hole_implicit i na imp r = let loc, r = match r with
| Some CAst.{loc;v} -> loc, v
| None -> anomaly (Pp.str "Only refs have implicits.") in
DAst.make ?loc (GHole (GImplicitArg (r,(i,na),force_inference_of imp)))
let exists_implicit_name id = List.exists (fun imp -> is_status_implicit imp && Id.equal id (name_of_implicit imp))
let print_allowed_named_implicit imps = let l = List.map_filter (function Some { impl_pos = (Name id, _, _) } -> Some id | _ -> None) imps in match l with
| [] -> mt ()
| l -> let n = List.length l in
str " (possible " ++ str (String.plural n "name") ++ str ":" ++ spc () ++
pr_sequence Id.print l ++ str ")"
let print_allowed_nondep_implicit imps = let l = List.map_filter (function Some { impl_pos = (_, _, Some n) } -> Some n | _ -> None) imps in match l with
| [] -> mt ()
| l -> let n = List.length l in
str " (possible " ++ str (String.plural n "position") ++ str ":" ++ spc () ++
pr_sequence Pp.int l ++ str ")"
let extract_explicit_arg imps args = let rec aux = function
| [] -> [], []
| (a,e)::l -> let (eargs,rargs) = aux l in match e with
| None -> (eargs,a::rargs)
| Some {loc;v=pos} -> let () = match pos with
| ExplByName id -> ifnot (exists_implicit_name id imps) then
user_err ?loc
(str "Wrong argument name " ++ Id.print id ++
print_allowed_named_implicit imps ++ str "."); ifList.mem_assoc pos eargs then
user_err ?loc (str "Argument name " ++ Id.print id
++ str " occurs more than once.")
| ExplByPos p -> ifnot (is_nondep_implicit p imps) then
user_err ?loc
(str"Wrong argument position " ++ int p ++
print_allowed_nondep_implicit imps ++ str "."); ifList.mem_assoc pos eargs then
user_err ?loc (str"Argument at position " ++ int p ++
str " is mentioned more than once.") in
((pos,(loc,a))::eargs, rargs) in aux args
let extract_regular_arguments args = List.map_filter (function
| (a,Some pos) -> user_err ?loc:pos.loc (str "Unexpected explicit argument.")
| (a,None) -> Some a) args
(**********************************************************************) (* Main loop *)
let internalize globalenv env pattern_mode (_, ntnvars as lvar) c = let rec intern env = CAst.with_loc_val (fun ?loc -> function
| CRef (ref,us) -> let c,_ =
intern_applied_reference ~isproj:false intern env (Environ.named_context_val globalenv)
lvar us [] ref in
apply_impargs env loc c []
| CFix ({ CAst.loc = locid; v = iddef}, dl) -> let lf = List.map (fun ({CAst.v = id},_,_,_,_,_) -> id) dl in let dl = Array.of_list dl in let n = tryList.index0 Id.equal iddef lf with Not_found as exn -> let _, info = Exninfo.capture exn in let info = Option.cata (Loc.add_loc info) info locid in
Exninfo.iraise (InternalizationError (UnboundFixName (false,iddef)),info) in let env = restart_lambda_binders env in let idl_temp = Array.map
(fun (id,_,recarg,bl,ty,_) -> let recarg = Option.map (function { CAst.v = v; loc } -> match v with
| CStructRec i -> i
| _ -> user_err ?loc Pp.(str "Well-founded induction requires Program Fixpoint or Function.")) recarg in let (env',bl) = List.fold_left intern_local_binder (env,[]) bl in let bl = List.rev_map glob_local_binder_of_extended bl in let n = Option.map (fun recarg -> let exception Found of int in try List.fold_left (fun n (id,_,_,body,_) -> match body, Name.equal id (Name recarg.v) with
| None, true -> raise (Found n)
| Some _, true ->
CErrors.user_err ?loc
(Name.print id ++ str" must be a proper parameter and not a local definition.")
| None, false -> n + 1
| Some _, false -> n (* let-ins don't count *))
0 bl |> ignore;
CErrors.user_err ?loc:recarg.loc
(str "No parameter named " ++ Id.print recarg.v ++ str"."); with
Found k -> k)
recarg in let bl_impls = remember_binders_impargs env' bl in
(n, bl, intern_type env' ty, bl_impls)) dl in (* We add the recursive functions to the environment *) let env_rec = List.fold_left_i (fun i en name -> let (_,bli,tyi,_) = idl_temp.(i) in let binder_index,fix_args = impls_binder_list 1 bli in let impls = impls_type_list ~args:fix_args binder_index tyi in
push_name_env ~dump:true ntnvars impls en (CAst.make @@ Name name)) 0 env lf in let idl = Array.map2 (fun (_,_,_,_,_,bd) (n,bl,ty,before_impls) -> (* We add the binders common to body and type to the environment *) let env_body = restore_binders_impargs env_rec before_impls in
(n,bl,ty,intern {env_body with tmp_scope = []} bd)) dl idl_temp in
DAst.make ?loc @@
GRec (GFix
(Array.map (fun (ro,_,_,_) -> ro) idl,n),
Array.of_list lf,
Array.map (fun (_,bl,_,_) -> bl) idl,
Array.map (fun (_,_,ty,_) -> ty) idl,
Array.map (fun (_,_,_,bd) -> bd) idl)
| CCoFix ({ CAst.loc = locid; v = iddef }, dl) -> let lf = List.map (fun ({CAst.v = id},_,_,_,_) -> id) dl in let dl = Array.of_list dl in let n = tryList.index0 Id.equal iddef lf with Not_found as exn -> let _, info = Exninfo.capture exn in let info = Option.cata (Loc.add_loc info) info locid in
Exninfo.iraise (InternalizationError (UnboundFixName (true,iddef)), info) in let env = restart_lambda_binders env in let idl_tmp = Array.map
(fun ({ CAst.loc; v = id },_,bl,ty,_) -> let (env',rbl) = List.fold_left intern_local_binder (env,[]) bl in let bl = List.rev (List.map glob_local_binder_of_extended rbl) in let bl_impls = remember_binders_impargs env' bl in
(bl,intern_type env' ty,bl_impls)) dl in let env_rec = List.fold_left_i (fun i en name -> let (bli,tyi,_) = idl_tmp.(i) in let binder_index,cofix_args = impls_binder_list 1 bli in
push_name_env ~dump:true ntnvars (impls_type_list ~args:cofix_args binder_index tyi)
en (CAst.make @@ Name name)) 0 env lf in let idl = Array.map2 (fun (_,_,_,_,bd) (b,c,bl_impls) -> (* We add the binders common to body and type to the environment *) let env_body = restore_binders_impargs env_rec bl_impls in
(b,c,intern {env_body with tmp_scope = []} bd)) dl idl_tmp in
DAst.make ?loc @@
GRec (GCoFix n,
Array.of_list lf,
Array.map (fun (bl,_,_) -> bl) idl,
Array.map (fun (_,ty,_) -> ty) idl,
Array.map (fun (_,_,bd) -> bd) idl)
| CProdN ([],c2) -> anomaly (Pp.str "The AST is malformed, found prod without binders.")
| CProdN (bl,c2) -> let (env',bl) = List.fold_left intern_local_binder (switch_prod_binders env,[]) bl in
expand_binders ?loc mkGProd bl (intern_type env' c2)
| CLambdaN ([],c2) -> anomaly (Pp.str "The AST is malformed, found lambda without binders.")
| CLambdaN (bl,c2) -> let (env',bl) = List.fold_left intern_local_binder (reset_tmp_scope (switch_lambda_binders env),[]) bl in
expand_binders ?loc mkGLambda bl (intern env' c2)
| CLetIn (na,c1,t,c2) -> let inc1 = intern_restart_binders (reset_tmp_scope env) c1 in let int = Option.map (intern_type_restart_binders env) t in
DAst.make ?loc @@
GLetIn (na.CAst.v, None, inc1, int,
intern_restart_binders (push_name_env ~dump:true ntnvars (impls_term_list 1 inc1) env na) c2)
| CNotation (_,(InConstrEntry,"- _"), ([a],[],[],[])) when is_non_zero a -> let p = match a.CAst.v with CPrim (Number (_, p)) -> p | _ -> assert falsein
intern env (CAst.make ?loc @@ CPrim (Number (SMinus,p)))
| CNotation (_,(InConstrEntry,"( _ )"),([a],[],[],[])) -> intern env a
| CNotation (_,ntn,args) -> let c = intern_notation intern env ntnvars loc ntn args in
apply_impargs env loc c []
| CGeneralization (b,c) ->
intern_generalization intern env ntnvars loc b c
| CPrim p -> let c = fst (Notation.interp_prim_token ?loc p (env.tmp_scope,env.scopes)) in
apply_impargs env loc c []
| CDelimiters (depth, key, e) -> let sc = find_delimiters_scope ?loc key in let env = match depth with
| DelimOnlyTmpScope -> {env with tmp_scope = [sc]}
| DelimUnboundedScope -> {env with tmp_scope = []; scopes = sc :: env.scopes} in
intern env e
| CProj (expl, f, args, c) ->
intern_proj ?loc env expl f args c []
| CAppExpl ((ref,us), args) -> let f,args = let args = List.map (fun a -> (a,None)) args in
intern_applied_reference ~isproj:false intern env (Environ.named_context_val globalenv)
lvar us args ref in
check_not_notation_variable f ntnvars; (* Rem: GApp(_,f,[]) stands for @f *) if args = [] then DAst.make ?loc @@ GApp (f,[]) else apply_args env loc f (List.map fst args)
| CApp (f, args) -> beginmatch f.CAst.v with (* t.(f args') args *)
| CProj (expl, (ref,us), args', c) ->
intern_proj ?loc:f.CAst.loc env expl (ref,us) args' c args
| CRef (ref,us) -> let f, args = intern_applied_reference ~isproj:false intern env
(Environ.named_context_val globalenv) lvar us args refin
apply_impargs env loc f args
| CNotation (_,ntn,ntnargs) -> let c = intern_notation intern env ntnvars loc ntn ntnargs in
apply_impargs env loc c args
| _ -> let f = intern_no_implicit env f in let args = extract_regular_arguments args in
apply_args env loc f args end
| CRecord fs -> let st = Evar_kinds.Define (not (Program.get_proofs_transparency ())) in let fields =
sort_fields globalenv ~complete:true loc fs
(fun _idx fieldname constructorname -> letopen Evar_kinds in let fieldinfo : Evar_kinds.record_field =
{fieldname=Option.get fieldname; recordname=inductive_of_constructor constructorname} in
CAst.make ?loc @@ CHole (Some
(GQuestionMark { Evar_kinds.default_question_mark with
Evar_kinds.qm_obligation=st;
Evar_kinds.qm_record_field=Some fieldinfo
}))) in begin match fields with
| None -> user_err ?loc (str"No constructor inference.")
| Some (n, constrname, args) -> let hd = DAst.make @@ GRef (constrname,None) in let pars = List.make n (CAst.make ?loc @@ CHole (None)) in
apply_args env loc hd (List.rev_append pars args) end
| CCases (sty, rtnpo, tms, eqns) -> let as_in_vars = List.fold_left (fun acc (_,na,inb) ->
(Option.fold_left (fun acc { CAst.v = y } -> Name.fold_right Id.Set.add y acc) acc na))
Id.Set.empty tms in (* as, in & return vars *) let forbidden_vars = Option.cata free_vars_of_constr_expr as_in_vars rtnpo in let tms,ex_ids,aliases,match_from_in = List.fold_right
(fun citm (inds,ex_ids,asubst,matchs) -> let ((tm,ind),extra_id,(ind_ids,alias_subst,match_td)) =
intern_case_item env forbidden_vars citm in
(tm,ind)::inds,
Id.Set.union ind_ids (Option.fold_right Id.Set.add extra_id ex_ids),
merge_subst alias_subst asubst, List.rev_append match_td matchs)
tms ([],Id.Set.empty,Id.Map.empty,[]) in let env' = Id.Set.fold
(fun var bli -> push_name_env ~dump:true ntnvars [] bli (CAst.make @@ Name var))
(Id.Set.union ex_ids as_in_vars)
(restart_lambda_binders env) in (* PatVars before a real pattern do not need to be matched *) let stripped_match_from_in = let rec aux = function
| [] -> []
| (_, c) :: q when is_patvar c -> aux q
| l -> l in aux match_from_in in let rtnpo = Option.map (replace_vars_constr_expr aliases) rtnpo in let rtnpo = match stripped_match_from_in with
| [] -> Option.map (intern_type (slide_binders env')) rtnpo (* Only PatVar in "in" clauses *)
| l -> (* Build a return predicate by expansion of the patterns of the "in" clause *) let thevars, thepats = List.split l in let sub_rtn = (* Some (GSort (Loc.ghost,GType None)) *) None in let sub_tms = List.map (fun id -> (DAst.make @@ GVar id),(Name id,None)) thevars (* "match v1,..,vn" *) in let main_sub_eqn = CAst.make @@
([],thepats, (* "|p1,..,pn" *) Option.cata (intern_type_no_implicit env')
(DAst.make ?loc @@ GHole (GCasesType))
rtnpo) (* "=> P" if there were a return predicate P, and "=> _" otherwise *) in let catch_all_sub_eqn = ifList.for_all (irrefutable globalenv) thepats then [] else
[CAst.make @@ ([],List.make (List.length thepats) (DAst.make @@ PatVar Anonymous), (* "|_,..,_" *)
DAst.make @@ GHole(GImpossibleCase))] (* "=> _" *) in
Some (DAst.make @@ GCases(RegularStyle,sub_rtn,sub_tms,main_sub_eqn::catch_all_sub_eqn)) in let eqns' = List.map (intern_eqn (List.length tms) env) eqns in
DAst.make ?loc @@
GCases (sty, rtnpo, tms, List.flatten eqns')
| CLetTuple (nal, (na,po), b, c) -> let env' = reset_tmp_scope env in (* "in" is None so no match to add *) let ((b',(na',_)),_,_) = intern_case_item env' Id.Set.empty (b,na,None) in let p' = Option.map (fun u -> let env'' = push_name_env ~dump:true ntnvars [] env'
(CAst.make na') in
intern_type (slide_binders env'') u) po in
DAst.make ?loc @@
GLetTuple (List.map (fun { CAst.v } -> v) nal, (na', p'), b',
intern (List.fold_left (push_name_env ~dump:true ntnvars []) env nal) c)
| CIf (c, (na,po), b1, b2) -> let env' = reset_tmp_scope env in let ((c',(na',_)),_,_) = intern_case_item env' Id.Set.empty (c,na,None) in (* no "in" no match to ad too *) let p' = Option.map (fun p -> let env'' = push_name_env ~dump:true ntnvars [] env
(CAst.make na') in
intern_type (slide_binders env'') p) po in
DAst.make ?loc @@
GIf (c', (na', p'), intern env b1, intern env b2)
| CHole k -> let k = match k with
| None -> let st = Evar_kinds.Define (not (Program.get_proofs_transparency ())) in
GQuestionMark { Evar_kinds.default_question_mark with Evar_kinds.qm_obligation=st; }
| Some k -> k in
DAst.make ?loc @@
GHole k
| CGenargGlob gen -> DAst.make ?loc @@ GGenarg gen
| CGenarg gen -> let (ltacvars, ntnvars) = lvar in (* Preventively declare notation variables in ltac as non-bindings *)
Id.Map.iter (fun x status -> status.Genintern.ntnvar_used_as_binder <- false) ntnvars; let extra = ltacvars.ltac_extra in (* We inform ltac that the interning vars and the notation vars are bound *) (* but we could instead rely on the "intern_sign" *) let lvars = Id.Set.union ltacvars.ltac_bound ltacvars.ltac_vars in let lvars = Id.Set.union lvars (Id.Map.domain ntnvars) in let ltacvars = Id.Set.union lvars env.ids in (* Propagating enough information for mutual interning with tac-in-term *) let intern_sign = {
Genintern.intern_ids = env.ids;
Genintern.notation_variable_status = ntnvars
} in let ist = {
Genintern.genv = globalenv;
ltacvars;
extra;
intern_sign;
strict_check = match env.strict_check with None -> false | Some b -> b;
} in let intern = if pattern_mode then Genintern.generic_intern_pat ?loc else Genintern.generic_intern in let (_, glb) = intern ist gen in
DAst.make ?loc @@
GGenarg glb (* Parsing pattern variables *)
| CPatVar n when pattern_mode ->
DAst.make ?loc @@
GPatVar (Evar_kinds.SecondOrderPatVar n)
| CEvar (n, []) when pattern_mode ->
DAst.make ?loc @@
GPatVar (Evar_kinds.FirstOrderPatVar n.CAst.v) (* end *) (* Parsing existential variables *)
| CEvar (n, l) ->
DAst.make ?loc @@
GEvar (n, List.map (on_snd (intern_no_implicit env)) l)
| CPatVar _ ->
Loc.raise ?loc (InternalizationError IllegalMetavariable) (* end *)
| CSort s ->
DAst.make ?loc @@
GSort (intern_sort ~local_univs:env.local_univs s)
| CCast (c1, k, c2) -> let c2 = intern_type (slide_binders env) c2 in let sc = Notation.compute_glob_type_scope c2 in let env' = {env with tmp_scope = sc @ env.tmp_scope} in let c1 = intern env' c1 in
DAst.make ?loc @@
GCast (c1, k, c2)
| CArray(u,t,def,ty) ->
DAst.make ?loc @@ GArray(intern_instance ~local_univs:env.local_univs u, Array.map (intern env) t, intern env def, intern env ty)
) and intern_type env = intern (set_type_scope env)
and intern_type_no_implicit env = intern (restart_no_binders (set_type_scope env))
and intern_no_implicit env = intern (restart_no_binders env)
and intern_restart_binders env = intern (restart_lambda_binders env)
and intern_type_restart_binders env = intern (restart_prod_binders (set_type_scope env))
and intern_local_binder env bind : intern_env * Glob_term.extended_glob_local_binder list =
intern_local_binder_aux ~dump:true intern ntnvars env bind
(* Expands a multiple pattern into a disjunction of multiple patterns *) and intern_multiple_pattern env n pl = let env = { pat_ids = None; pat_scopes = ([],env.scopes) } in let idsl_pll = List.map (intern_cases_pattern test_kind_tolerant globalenv ntnvars env empty_alias) pl in let loc = loc_of_multiple_pattern pl in
check_number_of_pattern loc n pl;
product_of_cases_patterns empty_alias idsl_pll
(* Expands a disjunction of multiple pattern *) and intern_disjunctive_multiple_pattern env loc n mpl =
assert (not (List.is_empty mpl)); let mpl' = List.map (intern_multiple_pattern env n) mpl in let (idsl,mpl') = List.split mpl'in let ids = List.hd idsl in List.iter2 check_linearity (List.map loc_of_multiple_pattern mpl) idsl;
check_or_pat_variables loc ids (List.tl idsl);
(ids,List.flatten mpl')
(* Expands a pattern-matching clause [lhs => rhs] *) and intern_eqn n env {loc;v=(lhs,rhs)} = let eqn_ids,pll = intern_disjunctive_multiple_pattern env loc n lhs in (* Linearity implies the order in ids is irrelevant *) let eqn_ids = List.map (fun x -> x.v) eqn_ids in let env_ids = List.fold_right Id.Set.add eqn_ids env.ids in List.map (fun (asubst,pl) -> let rhs = replace_vars_constr_expr asubst rhs in let rhs' = intern_no_implicit {env with ids = env_ids} rhs in
CAst.make ?loc (eqn_ids,pl,rhs')) pll
and intern_case_item env forbidden_names_for_gen (tm,na,t) = (* the "match" part *) let tm' = intern_no_implicit env tm in (* the "as" part *) let extra_id,na = let loc = tm'.CAst.loc in match DAst.get tm', na with
| GVar id, None when not (Id.Map.mem id (snd lvar)) -> Some id, CAst.make ?loc @@ Name id
| GRef (GlobRef.VarRef id, _), None -> Some id, CAst.make ?loc @@ Name id
| _, None -> None, CAst.make Anonymous
| _, Some ({ CAst.loc; v = na } as lna) -> None, lna in (* the "in" part *) let match_td,typ = match t with
| Some t -> let (ind,ind_ids,alias_subst,l) =
intern_ind_pattern globalenv ntnvars (env_for_pattern (set_type_scope env)) t in let (mib,mip) = Inductive.lookup_mind_specif globalenv ind in let nparams = (List.length (mib.Declarations.mind_params_ctxt)) in (* for "in Vect n", we answer (["n","n"],[(loc,"n")])
for "in Vect (S n)", we answer ((match over "m", relevant branch is "S n"), abstract over "m") = ([("m","S n")],[(loc,"m")]) where "m" is generated from the canonical name of the inductive and outside of
{forbidden_names_for_gen} *) let (match_to_do,nal) = let rec canonize_args case_rel_ctxt arg_pats forbidden_names match_acc var_acc = let add_name l = function
| { CAst.v = Anonymous } -> l
| { CAst.loc; v = (Name y as x) } -> (y, DAst.make ?loc @@ PatVar x) :: l in match case_rel_ctxt,arg_pats with
| [],[] ->
(add_name match_acc na, var_acc)
| (LocalAssum (cano_name,ty) | LocalDef (cano_name,_,ty)) :: t, c::tt -> beginmatch DAst.get c with
| PatVar x -> let loc = c.CAst.loc in
canonize_args t tt forbidden_names
(add_name match_acc CAst.(make ?loc x)) (CAst.make ?loc x::var_acc)
| _ -> let fresh =
Namegen.next_name_away_with_default_using_types "iV" cano_name.binder_name forbidden_names (EConstr.of_constr ty) in
canonize_args t tt (Id.Set.add fresh forbidden_names)
((fresh,c)::match_acc) ((CAst.make ?loc:(cases_pattern_loc c) @@ Name fresh)::var_acc) end
| _ -> assert falsein let _,args_rel = List.chop nparams (List.rev mip.Declarations.mind_arity_ctxt) in
canonize_args args_rel l forbidden_names_for_gen [] [] in
(Id.Set.of_list (List.map (fun id -> id.CAst.v) ind_ids),alias_subst,match_to_do),
Some (CAst.make ?loc:(cases_pattern_expr_loc t) (ind,List.rev_map (fun x -> x.v) nal))
| None ->
(Id.Set.empty,Id.Map.empty,[]), None in
(tm',(na.CAst.v, typ)), extra_id, match_td
and intern_proj ?loc env expl (qid,us) args1 c args2 = let f,args1 =
intern_applied_reference ~isproj:true intern env
(Environ.named_context_val globalenv) lvar us args1 qid in match find_projection_data f with
| Some (p, us, args0, nexpectedparams) -> (* A reference registered as projection *)
check_not_notation_variable f ntnvars; let head, impls, subscopes = find_appl_head_data env lvar f in let imps1, imps2 = if expl then
[], [] else let ngivenparams = List.length args0 + List.count (fun (_,x) -> Option.is_empty x) args1 in let nextraargs = List.length args2 in match select_impargs_size_for_proj ~nexpectedparams ~ngivenparams ~nextraargs impls with
| Inl (imps1,imps2) -> (imps1,imps2)
| Inr l -> let l = Lazy.force l in let n = match l with [n] -> n | _ -> 2 in(* singular only when l = [1] *)
user_err ?loc:qid.CAst.loc (str "Projection " ++ pr_qualid qid ++ str " expected " ++ pr_choice int l ++
str (String.plural n " explicit parameter") ++ str ".") in let subscopes1, subscopes2 = tryList.chop (nexpectedparams + 1) subscopes with Failure _ -> subscopes, [] in let c,args1 = List.sep_last (intern_impargs head env imps1 subscopes1 (args1@[c,None])) in let p = DAst.make ?loc (GProj ((p,us),args0@args1,c)) in let args2 = intern_impargs head env imps2 subscopes2 args2 in
smart_gapp p loc args2
| None -> (* Tolerate a use of t.(f) notation for an ordinary application until a decision is taken about it *) if expl then intern env (CAst.make ?loc (CAppExpl ((qid,us), List.map fst args1@c::List.mapfst args2))) else intern env (CAst.make ?loc (CApp ((CAst.make ?loc:qid.CAst.loc (CRef (qid,us))), args1@(c,None)::args2)))
and intern_impargs head env allimps subscopes args = let eargs, rargs = extract_explicit_arg allimps args in if !parsing_explicit then ifList.is_empty eargs then intern_args env subscopes rargs else user_err Pp.(str "Arguments given by name or position not supported in explicit mode.") else let rec aux n imps subscopes eargs rargs = let (enva,subscopes') = apply_scope_env env subscopes in match (imps,rargs) with
| (imp::imps', rargs) when is_status_implicit imp -> begintry let eargs',(_,(_,a)) = List.extract_first (fun (pos,a) -> match_implicit imp pos) eargs in
intern_no_implicit enva a :: aux (n+1) imps' subscopes' eargs' rargs with Not_found -> ifList.is_empty rargs && List.is_empty eargs && not (maximal_insertion_of imp) then (* Less regular arguments than expected: complete *) (* with implicit arguments if maximal insertion is set *)
[] else
set_hole_implicit n (get_implicit_name n allimps) imp head :: aux (n+1) imps' subscopes' eargs rargs end
| (imp::impl', a::rargs') ->
intern_no_implicit enva a :: aux (n+1) impl' subscopes' eargs rargs'
| (imp::impl', []) -> ifnot (List.is_empty eargs) then
(let pr_position = function ExplByName id -> Id.print id | ExplByPos n -> str "position " ++ int n in let (pos,(loc,_)) = List.hd eargs in
user_err ?loc (str "Not enough non implicit \
arguments to accept the argument bound to " ++
pr_position pos ++ str"."));
[]
| ([], rargs) ->
assert (List.is_empty eargs);
intern_args env subscopes rargs in aux 1 allimps subscopes eargs rargs
and apply_impargs env loc c args = let head, impls, subscopes = find_appl_head_data env lvar c in let imps = select_impargs_size (List.length (List.filter (fun (_,x) -> x == None) args)) impls in let args = intern_impargs head env imps subscopes args in
smart_gapp c loc args
and smart_gapp f loc = function
| [] -> f
| l -> let loc' = f.CAst.loc in match DAst.get f with
| GApp (g, args) -> DAst.make ?loc:(Loc.merge_opt loc' loc) @@ GApp (g, args@l)
| _ -> DAst.make ?loc:(Loc.merge_opt (loc_of_glob_constr f) loc) @@ GApp (f, l)
and apply_args env loc hd args = let _, _, subscopes = find_appl_head_data env lvar hd in
smart_gapp hd loc (intern_args env subscopes args)
and intern_args env subscopes = function
| [] -> []
| a::args -> let (enva,subscopes) = apply_scope_env env subscopes in let a = intern_no_implicit enva a in
a :: intern_args env subscopes args
in
NewProfile.profile "intern" (fun () ->
intern env c)
()
(**************************************************************************) (* Functions to translate constr_expr into glob_constr *) (**************************************************************************)
let extract_ids env = List.fold_right Id.Set.add
(Termops.ids_of_rel_context (Environ.rel_context env))
Id.Set.empty
let bound_univs sigma = Evd.universe_binders sigma
let scope_of_type_kind env sigma = function
| IsType -> Notation.current_type_scope_names ()
| OfType typ -> compute_type_scope env sigma typ
| WithoutTypeConstraint -> []
let allowed_binder_kind_of_type_kind = function
| IsType -> AbsPi
| OfType _ | WithoutTypeConstraint -> AbsLambda
let intern_gen kind env sigma
?(impls=empty_internalization_env) ?strict_check ?(pattern_mode=false) ?(ltacvars=empty_ltac_sign)
c = let tmp_scope = Option.cata (scope_of_type_kind env sigma) [] kind in let k = Option.map allowed_binder_kind_of_type_kind kind in
internalize env {ids = extract_ids env; strict_check;
local_univs = { bound = bound_univs sigma; unb_univs = true };
tmp_scope = tmp_scope; scopes = [];
impls; binder_block_names = Some k; ntn_binding_ids = Id.Set.empty}
pattern_mode (ltacvars, Id.Map.empty) c
let intern_unknown_if_term_or_type env sigma c =
intern_gen None env sigma c
let intern_gen kind env sigma ?impls ?strict_check ?pattern_mode ?ltacvars c =
intern_gen (Some kind) env sigma ?impls ?strict_check ?pattern_mode ?ltacvars c
let intern_constr env sigma c = intern_gen WithoutTypeConstraint env sigma c let intern_type env sigma c = intern_gen IsType env sigma c let intern_pattern globalenv patt = let env = {pat_ids = None; pat_scopes = ([], [])} in
intern_cases_pattern test_kind_tolerant globalenv Id.Map.empty env empty_alias patt
(*********************************************************************) (* Functions to parse and interpret constructions *)
(* All evars resolved *)
let interp_gen ?flags kind env sigma ?(impls=empty_internalization_env) c = let c = intern_gen kind ~impls env sigma c in
understand ?flags ~expected_type:kind env sigma c
let interp_constr ?flags ?(expected_type=WithoutTypeConstraint) env sigma ?(impls=empty_internalization_env) c =
interp_gen ?flags expected_type env sigma c
let interp_type ?flags env sigma ?(impls=empty_internalization_env) c =
interp_gen ?flags IsType env sigma ~impls c
let interp_casted_constr ?flags env sigma ?(impls=empty_internalization_env) c typ =
interp_gen ?flags (OfType typ) env sigma ~impls c
(* Not all evars expected to be resolved *)
let interp_open_constr ?(expected_type=WithoutTypeConstraint) env sigma c =
understand_tcc env sigma (intern_gen expected_type env sigma c)
(* Not all evars expected to be resolved and computation of implicit args *)
let interp_constr_evars_gen_impls ?(flags=Pretyping.all_no_fail_flags) env sigma
?(impls=empty_internalization_env) expected_type c = let c = intern_gen expected_type ~impls env sigma c in let imps = Implicit_quantifiers.implicits_of_glob_constr ~with_products:(expected_type == IsType) c in let sigma, c = understand_tcc ~flags env sigma ~expected_type c in
sigma, (c, imps)
let interp_constr_evars_impls ?(program_mode=false) env sigma ?(impls=empty_internalization_env) c = let flags = { Pretyping.all_no_fail_flags with program_mode } in
interp_constr_evars_gen_impls ~flags env sigma ~impls WithoutTypeConstraint c
let interp_casted_constr_evars_impls ?(program_mode=false) env evdref ?(impls=empty_internalization_env) c typ = let flags = { Pretyping.all_no_fail_flags with program_mode } in
interp_constr_evars_gen_impls ~flags env evdref ~impls (OfType typ) c
let interp_type_evars_impls ?(flags=Pretyping.all_no_fail_flags) env sigma ?(impls=empty_internalization_env) c =
interp_constr_evars_gen_impls ~flags env sigma ~impls IsType c
(* Not all evars expected to be resolved, with side-effect on evars *)
let interp_constr_evars_gen ?(program_mode=false) env sigma ?(impls=empty_internalization_env) expected_type c = let c = intern_gen expected_type ~impls env sigma c in let flags = { Pretyping.all_no_fail_flags with program_mode } in
understand_tcc ~flags env sigma ~expected_type c
let interp_constr_evars ?program_mode env evdref ?(impls=empty_internalization_env) c =
interp_constr_evars_gen ?program_mode env evdref WithoutTypeConstraint ~impls c
let interp_casted_constr_evars ?program_mode env sigma ?(impls=empty_internalization_env) c typ =
interp_constr_evars_gen ?program_mode env sigma ~impls (OfType typ) c
let interp_type_evars ?program_mode env sigma ?(impls=empty_internalization_env) c =
interp_constr_evars_gen ?program_mode env sigma IsType ~impls c
(* Miscellaneous *)
let intern_constr_pattern env sigma ?(as_type=false) ?strict_check ?(ltacvars=empty_ltac_sign) c = let c = intern_gen (if as_type then IsType else WithoutTypeConstraint)
?strict_check ~pattern_mode:true ~ltacvars env sigma c in
pattern_of_glob_constr env c
let intern_uninstantiated_constr_pattern env sigma ?(as_type=false) ?strict_check ?(ltacvars=empty_ltac_sign) c = let c = intern_gen (if as_type then IsType else WithoutTypeConstraint)
?strict_check ~pattern_mode:true ~ltacvars env sigma c in
uninstantiated_pattern_of_glob_constr env c
let intern_core kind env sigma ?strict_check ?(pattern_mode=false) ?(ltacvars=empty_ltac_sign)
{ Genintern.intern_ids = ids; Genintern.notation_variable_status = vl } c = let tmp_scope = scope_of_type_kind env sigma kind in let impls = empty_internalization_env in let k = allowed_binder_kind_of_type_kind kind in
internalize env
{ids; strict_check;
local_univs = { bound = bound_univs sigma; unb_univs = true };
tmp_scope; scopes = []; impls;
binder_block_names = Some (Some k); ntn_binding_ids = Id.Set.empty}
pattern_mode (ltacvars, vl) c
let interp_notation_constr env ?(impls=empty_internalization_env) nenv a = let ids = extract_ids env in (* [vl] is intended to remember the scope of the free variables of [a] *) let make_status scopes typ = {
Genintern.ntnvar_used = [];
ntnvar_used_as_binder = false;
ntnvar_scopes = scopes;
ntnvar_binding_ids = None;
ntnvar_typ = typ;
} in let vl = Id.Map.map (function
| (NtnInternTypeAny None | NtnInternTypeOnlyBinder) as typ -> make_status None typ
| NtnInternTypeAny (Some scope) as typ -> make_status (Some ([scope],[])) typ)
nenv.ninterp_var_type in let impls = Id.Map.fold (fun id _ impls -> Id.Map.remove id impls) nenv.ninterp_var_type impls in let c = internalize env
{ids; strict_check = Some true;
local_univs = empty_local_univs;
tmp_scope = []; scopes = []; impls; binder_block_names = None; ntn_binding_ids = Id.Set.empty} false (empty_ltac_sign, vl) a in (* Splits variables into those that are binding, bound, or both *) (* Translate and check that [c] has all its free variables bound in [vars] *) let a, reversible = notation_constr_of_glob_constr nenv c in (* binding and bound *) let out_scope = function None -> [],[] | Some (a,l) -> a,l in let out_bindings = function None -> Id.Set.empty | Some a -> a in let unused = match reversible with NonInjective ids -> ids | _ -> [] in let vars = Id.Map.mapi (fun id status ->
(status.Genintern.ntnvar_used_as_binder && not (List.mem_f Id.equal id unused),
out_scope status.ntnvar_scopes, out_bindings status.ntnvar_binding_ids)) vl in (* Returns [a] and the ordered list of variables with their scopes *)
vars, a, reversible
(* Interpret binders and contexts *)
let interp_binder env sigma na t = let t = intern_gen IsType env sigma t in let t' = locate_if_hole ?loc:(loc_of_glob_constr t) na t in
understand ~expected_type:IsType env sigma t'
let interp_binder_evars env sigma na t = let t = intern_gen IsType env sigma t in let t' = locate_if_hole ?loc:(loc_of_glob_constr t) na t in
understand_tcc env sigma ~expected_type:IsType t'
let my_intern_constr env lvar acc c =
internalize env acc false lvar c
let intern_context env ~bound_univs impl_env binders = let lvar = (empty_ltac_sign, Id.Map.empty) in let ids = (* We assume all ids around are parts of the prefix of the current
context being interpreted *)
extract_ids env in let lenv, bl = List.fold_left
(fun (lenv, bl) b -> let (env, bl) = intern_local_binder_aux ~dump:false (my_intern_constr env lvar) Id.Map.empty (lenv, bl) b in
(env, bl))
(default_internalization_env ids bound_univs impl_env, [])
binders in
(lenv.impls, List.map glob_local_binder_of_extended bl)
let impl_of_binder_kind na = function
| NonMaxImplicit -> CAst.make (Some (na,false))
| MaxImplicit -> CAst.make (Some (na,true))
| Explicit -> CAst.make None
let push_auto_implicit env sigma t int_env id = let var_info = Id.Map.find id int_env.impls in let imps = List.map (fun imp -> CAst.make (Option.map (fun imp -> (pi1 imp.impl_pos,imp.impl_max)) imp)) var_info.var_impls in let imps = compute_internalization_data env sigma ~silent:false id var_info.var_intern_typ t imps in(* add automatic implicit arguments to manual ones *)
{ int_env with impls = Id.Map.add id imps int_env.impls }
let interp_context_evars_gen ?(program_mode=false) ?(unconstrained_sorts = false) ?(impl_env=empty_internalization_env) ?(autoimp_enable=true) ~dump env sigma make_decl push_decl bl = let lvar = (empty_ltac_sign, Id.Map.empty) in let ids = (* We assume all ids around are parts of the prefix of the current
context being interpreted *)
extract_ids env in let int_env = default_internalization_env ids (bound_univs sigma) impl_env in let flags = { Pretyping.all_no_fail_flags with program_mode; unconstrained_sorts } in let (int_env, (env, sigma, bl, impls, locs)) = List.fold_left
(fun (int_env, acc) b -> let int_env, bl = intern_local_binder_aux ~dump (my_intern_constr env lvar) Id.Map.empty (int_env,[]) b in let int_env, acc = List.fold_right (fun b' (int_env, (env,sigma,params,impls,locs)) -> let loc = b'.CAst.loc in let (na, _, bk, b', t) = glob_local_binder_of_extended b'in let sigma, t = let t' = if Option.is_empty b'then locate_if_hole ?loc:(loc_of_glob_constr t) na t else t in(* useful? *) let sigma, t, _ = Pretyping.ise_pretype_gen flags env sigma empty_lvar IsType t' in
sigma, t in let r = Retyping.relevance_of_type env sigma t in match b' with
| None -> let int_env = if autoimp_enable then Name.fold_left (push_auto_implicit env sigma t) int_env na else int_env in let d = make_decl ?loc (LocalAssum (make_annot na r,t)) in let impls = impl_of_binder_kind na bk :: impls in
(int_env, (push_decl d env, sigma, d::params, impls, loc::locs))
| Some b ->
assert (bk = Explicit); let sigma, c, _ = Pretyping.ise_pretype_gen flags env sigma empty_lvar (OfType t) b in let d = make_decl ?loc (LocalDef (make_annot na r, c, t)) in
(int_env, (push_decl d env, sigma, d::params, impls, loc::locs)))
bl (int_env,acc) in
int_env, acc)
(int_env,(env,sigma,[],[],[])) bl in
sigma, (int_env.impls, ((env, bl), List.rev impls, locs))
let interp_named_context_evars ?program_mode ?unconstrained_sorts ?impl_env ?autoimp_enable env sigma bl = let extract_name ?loc = function Name id -> id | Anonymous -> user_err ?loc Pp.(str "Unexpected anonymous variable.") in let make_decl ?loc = Context.Named.Declaration.of_rel_decl (extract_name ?loc) in
interp_context_evars_gen ?program_mode ?unconstrained_sorts ?impl_env ?autoimp_enable ~dump:false env sigma make_decl EConstr.push_named bl
(** Local universe and constraint declarations. *)
let known_universe_level_name evd lid = try Evd.universe_of_name evd lid.CAst.v with Not_found -> let u = Nametab.locate_universe (Libnames.qualid_of_lident lid) in
Univ.Level.make u
let known_glob_level evd = function
| GSProp | GProp ->
CErrors.user_err (Pp.str "Universe constraints cannot mention Prop or SProp.")
| GSet -> Univ.Level.set
| GUniv u -> u
| GRawUniv u -> anomaly Pp.(str "Raw universe in known_glob_level.")
| GLocalUniv lid -> try known_universe_level_name evd lid with Not_found ->
user_err ?loc:lid.CAst.loc
(str "Undeclared universe " ++ Id.print lid.CAst.v)
let interp_known_level evd u = let u = intern_sort_name ~local_univs:{bound = bound_univs evd; unb_univs=false} u in
known_glob_level evd u
let interp_univ_constraint evd (u,c,v) = let u = interp_known_level evd u in let v = interp_known_level evd v in
u,c,v
let interp_univ_constraints env evd cstrs = let interp (evd,cstrs) cstr = let cstr = interp_univ_constraint evd cstr in try let evd = Evd.add_constraints evd (Univ.Constraints.singleton cstr) in
evd, Univ.Constraints.add cstr cstrs with UGraph.UniverseInconsistency e as exn -> let _, info = Exninfo.capture exn in
CErrors.user_err ~info
(UGraph.explain_universe_inconsistency (Termops.pr_evd_qvar evd) (Termops.pr_evd_level evd) e) in List.fold_left interp (evd,Univ.Constraints.empty) cstrs
let interp_univ_decl env decl = letopen UState in let evd = Evd.from_env env in let evd, qualities = List.fold_left_map (fun evd lid ->
Evd.new_quality_variable ?loc:lid.loc ~name:lid.v evd)
evd
decl.univdecl_qualities in let evd, instance = List.fold_left_map (fun evd lid ->
Evd.new_univ_level_variable ?loc:lid.loc univ_rigid ~name:lid.v evd)
evd
decl.univdecl_instance in let evd, cstrs = interp_univ_constraints env evd decl.univdecl_constraints in let decl = {
univdecl_qualities = qualities;
univdecl_extensible_qualities = decl.univdecl_extensible_qualities;
univdecl_instance = instance;
univdecl_extensible_instance = decl.univdecl_extensible_instance;
univdecl_constraints = cstrs;
univdecl_extensible_constraints = decl.univdecl_extensible_constraints;
} in evd, decl
let interp_cumul_univ_decl env decl = letopen UState in let binders = List.map fst decl.univdecl_instance in let variances = Array.map_of_list snd decl.univdecl_instance in let evd = Evd.from_env env in let evd, qualities = List.fold_left_map (fun evd lid ->
Evd.new_quality_variable ?loc:lid.loc ~name:lid.v evd)
evd
decl.univdecl_qualities in let evd, instance = List.fold_left_map (fun evd lid ->
Evd.new_univ_level_variable ?loc:lid.loc univ_rigid ~name:lid.v evd)
evd
binders in let evd, cstrs = interp_univ_constraints env evd decl.univdecl_constraints in let decl = {
univdecl_qualities = qualities;
univdecl_extensible_qualities = decl.univdecl_extensible_qualities;
univdecl_instance = instance;
univdecl_extensible_instance = decl.univdecl_extensible_instance;
univdecl_constraints = cstrs;
univdecl_extensible_constraints = decl.univdecl_extensible_constraints;
} in
evd, decl, variances
let interp_univ_decl_opt env l = match l with
| None -> Evd.from_env env, UState.default_univ_decl
| Some decl -> interp_univ_decl env decl
let interp_cumul_univ_decl_opt env = function
| None -> Evd.from_env env, UState.default_univ_decl, [| |]
| Some decl -> interp_cumul_univ_decl env decl
let interp_mutual_univ_decl_opt env udecls = let udecl = List.fold_right (fun udecl acc -> match udecl , acc with
| None , acc -> acc
| x , None -> x
| Some ls , Some us -> letopen UState in let lsu = ls.univdecl_instance and usu = us.univdecl_instance in ifnot (CList.for_all2eq (fun x y -> Id.equal x.CAst.v y.CAst.v) lsu usu) then
CErrors.user_err Pp.(str "Mutual definitions should all have the same universe binders.");
Some us) udecls None in
interp_univ_decl_opt env udecl
Messung V0.5 in Prozent
¤ Dauer der Verarbeitung: 0.50 Sekunden
(vorverarbeitet am 2026-04-27)
¤
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