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|
(************************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2010 *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(************************************************************************)
(*i $Id$ i*)
open Util
open Pp
open Names
open Term
open Sign
open Environ
(* Universes *)
val new_univ : unit -> Univ.universe
val new_sort_in_family : sorts_family -> sorts
val new_Type : unit -> types
val new_Type_sort : unit -> sorts
val refresh_universes : types -> types
val refresh_universes_strict : types -> types
(* printers *)
val print_sort : sorts -> std_ppcmds
val pr_sort_family : sorts_family -> std_ppcmds
(* debug printer: do not use to display terms to the casual user... *)
val set_print_constr : (env -> constr -> std_ppcmds) -> unit
val print_constr : constr -> std_ppcmds
val print_constr_env : env -> constr -> std_ppcmds
val print_named_context : env -> std_ppcmds
val pr_rel_decl : env -> rel_declaration -> std_ppcmds
val print_rel_context : env -> std_ppcmds
val print_env : env -> std_ppcmds
(* about contexts *)
val push_rel_assum : name * types -> env -> env
val push_rels_assum : (name * types) list -> env -> env
val push_named_rec_types : name array * types array * 'a -> env -> env
val lookup_rel_id : identifier -> rel_context -> int * constr option * types
(* builds argument lists matching a block of binders or a context *)
val rel_vect : int -> int -> constr array
val rel_list : int -> int -> constr list
val extended_rel_list : int -> rel_context -> constr list
val extended_rel_vect : int -> rel_context -> constr array
(* iterators/destructors on terms *)
val mkProd_or_LetIn : rel_declaration -> types -> types
val mkProd_wo_LetIn : rel_declaration -> types -> types
val it_mkProd : init:types -> (name * types) list -> types
val it_mkLambda : init:constr -> (name * types) list -> constr
val it_mkProd_or_LetIn : init:types -> rel_context -> types
val it_mkProd_wo_LetIn : init:types -> rel_context -> types
val it_mkLambda_or_LetIn : init:constr -> rel_context -> constr
val it_mkNamedProd_or_LetIn : init:types -> named_context -> types
val it_mkNamedProd_wo_LetIn : init:types -> named_context -> types
val it_mkNamedLambda_or_LetIn : init:constr -> named_context -> constr
val it_named_context_quantifier :
(named_declaration -> 'a -> 'a) -> init:'a -> named_context -> 'a
(**********************************************************************)
(* Generic iterators on constr *)
val map_constr_with_named_binders :
(name -> 'a -> 'a) ->
('a -> constr -> constr) -> 'a -> constr -> constr
val map_constr_with_binders_left_to_right :
(rel_declaration -> 'a -> 'a) ->
('a -> constr -> constr) ->
'a -> constr -> constr
val map_constr_with_full_binders :
(rel_declaration -> 'a -> 'a) ->
('a -> constr -> constr) -> 'a -> constr -> constr
(* [fold_constr_with_binders g f n acc c] folds [f n] on the immediate
subterms of [c] starting from [acc] and proceeding from left to
right according to the usual representation of the constructions as
[fold_constr] but it carries an extra data [n] (typically a lift
index) which is processed by [g] (which typically add 1 to [n]) at
each binder traversal; it is not recursive *)
val fold_constr_with_binders :
('a -> 'a) -> ('a -> 'b -> constr -> 'b) -> 'a -> 'b -> constr -> 'b
val iter_constr_with_full_binders :
(rel_declaration -> 'a -> 'a) -> ('a -> constr -> unit) -> 'a ->
constr -> unit
(**********************************************************************)
val strip_head_cast : constr -> constr
(* occur checks *)
exception Occur
val occur_meta : types -> bool
val occur_existential : types -> bool
val occur_meta_or_existential : types -> bool
val occur_const : constant -> types -> bool
val occur_evar : existential_key -> types -> bool
val occur_var : env -> identifier -> types -> bool
val occur_var_in_decl :
env ->
identifier -> 'a * types option * types -> bool
val free_rels : constr -> Intset.t
val dependent : constr -> constr -> bool
val dependent_no_evar : constr -> constr -> bool
val collect_metas : constr -> int list
val occur_term : constr -> constr -> bool (* Synonymous
of dependent *)
(* Substitution of metavariables *)
type meta_value_map = (metavariable * constr) list
val subst_meta : meta_value_map -> constr -> constr
(* Type assignment for metavariables *)
type meta_type_map = (metavariable * types) list
(* [pop c] lifts by -1 the positive indexes in [c] *)
val pop : constr -> constr
(*s Substitution of an arbitrary large term. Uses equality modulo
reduction of let *)
(* [subst_term_gen eq d c] replaces [Rel 1] by [d] in [c] using [eq]
as equality *)
val subst_term_gen :
(constr -> constr -> bool) -> constr -> constr -> constr
(* [replace_term_gen eq d e c] replaces [d] by [e] in [c] using [eq]
as equality *)
val replace_term_gen :
(constr -> constr -> bool) ->
constr -> constr -> constr -> constr
(* [subst_term d c] replaces [Rel 1] by [d] in [c] *)
val subst_term : constr -> constr -> constr
(* [replace_term d e c] replaces [d] by [e] in [c] *)
val replace_term : constr -> constr -> constr -> constr
(* In occurrences sets, false = everywhere except and true = nowhere except *)
type occurrences = bool * int list
val all_occurrences : occurrences
val no_occurrences_in_set : occurrences
(* [subst_term_occ_gen occl n c d] replaces occurrences of [c] at
positions [occl], counting from [n], by [Rel 1] in [d] *)
val subst_term_occ_gen :
occurrences -> int -> constr -> types -> int * types
(* [subst_term_occ occl c d] replaces occurrences of [c] at
positions [occl] by [Rel 1] in [d] (see also Note OCC) *)
val subst_term_occ : occurrences -> constr -> constr -> constr
(* [subst_term_occ_decl occl c decl] replaces occurrences of [c] at
positions [occl] by [Rel 1] in [decl] *)
type hyp_location_flag = (* To distinguish body and type of local defs *)
| InHyp
| InHypTypeOnly
| InHypValueOnly
val subst_term_occ_decl :
occurrences * hyp_location_flag -> constr -> named_declaration ->
named_declaration
val error_invalid_occurrence : int list -> 'a
(* Alternative term equalities *)
val base_sort_cmp : Reduction.conv_pb -> sorts -> sorts -> bool
val compare_constr_univ : (Reduction.conv_pb -> constr -> constr -> bool) ->
Reduction.conv_pb -> constr -> constr -> bool
val constr_cmp : Reduction.conv_pb -> constr -> constr -> bool
val eq_constr : constr -> constr -> bool
val eta_reduce_head : constr -> constr
val eta_eq_constr : constr -> constr -> bool
exception CannotFilter
(* Lightweight first-order filtering procedure. Unification
variables ar represented by (untyped) Evars.
[filtering c1 c2] returns the substitution n'th evar ->
(context,term), or raises [CannotFilter].
Warning: Outer-kernel sort subtyping are taken into account: c1 has
to be smaller than c2 wrt. sorts. *)
type subst = (rel_context*constr) Intmap.t
val filtering : rel_context -> Reduction.conv_pb -> constr -> constr -> subst
val decompose_prod_letin : constr -> int * rel_context * constr
val align_prod_letin : constr -> constr -> rel_context * constr
(* Get the last arg of a constr intended to be an application *)
val last_arg : constr -> constr
(* name contexts *)
type names_context = name list
val add_name : name -> names_context -> names_context
val lookup_name_of_rel : int -> names_context -> name
val lookup_rel_of_name : identifier -> names_context -> int
val empty_names_context : names_context
val ids_of_rel_context : rel_context -> identifier list
val ids_of_named_context : named_context -> identifier list
val ids_of_context : env -> identifier list
val names_of_rel_context : env -> names_context
val context_chop : int -> rel_context -> (rel_context*rel_context)
(* Set of local names *)
val vars_of_env: env -> Idset.t
val add_vname : Idset.t -> name -> Idset.t
(* other signature iterators *)
val process_rel_context : (rel_declaration -> env -> env) -> env -> env
val assums_of_rel_context : rel_context -> (name * constr) list
val lift_rel_context : int -> rel_context -> rel_context
val substl_rel_context : constr list -> rel_context -> rel_context
val smash_rel_context : rel_context -> rel_context (* expand lets in context *)
val adjust_subst_to_rel_context : rel_context -> constr list -> constr list
val map_rel_context_in_env :
(env -> constr -> constr) -> env -> rel_context -> rel_context
val map_rel_context_with_binders :
(int -> constr -> constr) -> rel_context -> rel_context
val fold_named_context_both_sides :
('a -> named_declaration -> named_declaration list -> 'a) ->
named_context -> init:'a -> 'a
val mem_named_context : identifier -> named_context -> bool
val clear_named_body : identifier -> env -> env
val global_vars : env -> constr -> identifier list
val global_vars_set_of_decl : env -> named_declaration -> Idset.t
(* Gives an ordered list of hypotheses, closed by dependencies,
containing a given set *)
val dependency_closure : env -> named_context -> Idset.t -> identifier list
(* Test if an identifier is the basename of a global reference *)
val is_section_variable : identifier -> bool
val isGlobalRef : constr -> bool
val has_polymorphic_type : constant -> bool
(* Combinators on judgments *)
val on_judgment : (types -> types) -> unsafe_judgment -> unsafe_judgment
val on_judgment_value : (types -> types) -> unsafe_judgment -> unsafe_judgment
val on_judgment_type : (types -> types) -> unsafe_judgment -> unsafe_judgment
|
