412 lines
15 KiB
OCaml
412 lines
15 KiB
OCaml
(***********************************************************************)
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(* *)
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(* OCaml *)
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(* *)
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(* Alain Frisch, LexiFi *)
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(* *)
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(* Copyright 2012 Institut National de Recherche en Informatique et *)
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(* en Automatique. All rights reserved. This file is distributed *)
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(* under the terms of the Q Public License version 1.0. *)
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(* *)
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(***********************************************************************)
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(** Helpers to produce Parsetree fragments *)
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open Asttypes
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open Parsetree
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type lid = Longident.t loc
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type str = string loc
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type loc = Location.t
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type attrs = attribute list
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let default_loc = ref Location.none
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let with_default_loc l f =
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let old = !default_loc in
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default_loc := l;
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try let r = f () in default_loc := old; r
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with exn -> default_loc := old; raise exn
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module Typ = struct
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let mk ?(loc = !default_loc) ?(attrs = []) d = {ptyp_desc = d; ptyp_loc = loc; ptyp_attributes = attrs}
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let attr d a = {d with ptyp_attributes = d.ptyp_attributes @ [a]}
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let any ?loc ?attrs () = mk ?loc ?attrs Ptyp_any
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let var ?loc ?attrs a = mk ?loc ?attrs (Ptyp_var a)
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let arrow ?loc ?attrs a b c = mk ?loc ?attrs (Ptyp_arrow (a, b, c))
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let tuple ?loc ?attrs a = mk ?loc ?attrs (Ptyp_tuple a)
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let constr ?loc ?attrs a b = mk ?loc ?attrs (Ptyp_constr (a, b))
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let object_ ?loc ?attrs a b = mk ?loc ?attrs (Ptyp_object (a, b))
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let class_ ?loc ?attrs a b c = mk ?loc ?attrs (Ptyp_class (a, b, c))
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let alias ?loc ?attrs a b = mk ?loc ?attrs (Ptyp_alias (a, b))
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let variant ?loc ?attrs a b c = mk ?loc ?attrs (Ptyp_variant (a, b, c))
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let poly ?loc ?attrs a b = mk ?loc ?attrs (Ptyp_poly (a, b))
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let package ?loc ?attrs a b = mk ?loc ?attrs (Ptyp_package (a, b))
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let extension ?loc ?attrs a = mk ?loc ?attrs (Ptyp_extension a)
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let force_poly t =
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match t.ptyp_desc with
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| Ptyp_poly _ -> t
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| _ -> poly ~loc:t.ptyp_loc [] t (* -> ghost? *)
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end
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module Pat = struct
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let mk ?(loc = !default_loc) ?(attrs = []) d = {ppat_desc = d; ppat_loc = loc; ppat_attributes = attrs}
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let attr d a = {d with ppat_attributes = d.ppat_attributes @ [a]}
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let any ?loc ?attrs () = mk ?loc ?attrs Ppat_any
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let var ?loc ?attrs a = mk ?loc ?attrs (Ppat_var a)
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let alias ?loc ?attrs a b = mk ?loc ?attrs (Ppat_alias (a, b))
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let constant ?loc ?attrs a = mk ?loc ?attrs (Ppat_constant a)
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let tuple ?loc ?attrs a = mk ?loc ?attrs (Ppat_tuple a)
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let construct ?loc ?attrs a b c = mk ?loc ?attrs (Ppat_construct (a, b, c))
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let variant ?loc ?attrs a b = mk ?loc ?attrs (Ppat_variant (a, b))
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let record ?loc ?attrs a b = mk ?loc ?attrs (Ppat_record (a, b))
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let array ?loc ?attrs a = mk ?loc ?attrs (Ppat_array a)
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let or_ ?loc ?attrs a b = mk ?loc ?attrs (Ppat_or (a, b))
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let constraint_ ?loc ?attrs a b = mk ?loc ?attrs (Ppat_constraint (a, b))
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let type_ ?loc ?attrs a = mk ?loc ?attrs (Ppat_type a)
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let lazy_ ?loc ?attrs a = mk ?loc ?attrs (Ppat_lazy a)
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let unpack ?loc ?attrs a = mk ?loc ?attrs (Ppat_unpack a)
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let extension ?loc ?attrs a = mk ?loc ?attrs (Ppat_extension a)
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end
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module Exp = struct
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let mk ?(loc = !default_loc) ?(attrs = []) d = {pexp_desc = d; pexp_loc = loc; pexp_attributes = attrs}
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let attr d a = {d with pexp_attributes = d.pexp_attributes @ [a]}
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let ident ?loc ?attrs a = mk ?loc ?attrs (Pexp_ident a)
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let constant ?loc ?attrs a = mk ?loc ?attrs (Pexp_constant a)
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let let_ ?loc ?attrs a b c = mk ?loc ?attrs (Pexp_let (a, b, c))
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let function_ ?loc ?attrs a b c = mk ?loc ?attrs (Pexp_function (a, b, c))
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let apply ?loc ?attrs a b = mk ?loc ?attrs (Pexp_apply (a, b))
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let match_ ?loc ?attrs a b = mk ?loc ?attrs (Pexp_match (a, b))
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let try_ ?loc ?attrs a b = mk ?loc ?attrs (Pexp_try (a, b))
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let tuple ?loc ?attrs a = mk ?loc ?attrs (Pexp_tuple a)
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let construct ?loc ?attrs a b c = mk ?loc ?attrs (Pexp_construct (a, b, c))
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let variant ?loc ?attrs a b = mk ?loc ?attrs (Pexp_variant (a, b))
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let record ?loc ?attrs a b = mk ?loc ?attrs (Pexp_record (a, b))
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let field ?loc ?attrs a b = mk ?loc ?attrs (Pexp_field (a, b))
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let setfield ?loc ?attrs a b c = mk ?loc ?attrs (Pexp_setfield (a, b, c))
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let array ?loc ?attrs a = mk ?loc ?attrs (Pexp_array a)
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let ifthenelse ?loc ?attrs a b c = mk ?loc ?attrs (Pexp_ifthenelse (a, b, c))
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let sequence ?loc ?attrs a b = mk ?loc ?attrs (Pexp_sequence (a, b))
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let while_ ?loc ?attrs a b = mk ?loc ?attrs (Pexp_while (a, b))
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let for_ ?loc ?attrs a b c d e = mk ?loc ?attrs (Pexp_for (a, b, c, d, e))
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let constraint_ ?loc ?attrs a b c = mk ?loc ?attrs (Pexp_constraint (a, b, c))
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let send ?loc ?attrs a b = mk ?loc ?attrs (Pexp_send (a, b))
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let new_ ?loc ?attrs a = mk ?loc ?attrs (Pexp_new a)
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let setinstvar ?loc ?attrs a b = mk ?loc ?attrs (Pexp_setinstvar (a, b))
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let override ?loc ?attrs a = mk ?loc ?attrs (Pexp_override a)
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let letmodule ?loc ?attrs a b c= mk ?loc ?attrs (Pexp_letmodule (a, b, c))
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let assert_ ?loc ?attrs a = mk ?loc ?attrs (Pexp_assert a)
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let assertfalse ?loc ?attrs () = mk ?loc ?attrs Pexp_assertfalse
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let lazy_ ?loc ?attrs a = mk ?loc ?attrs (Pexp_lazy a)
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let poly ?loc ?attrs a b = mk ?loc ?attrs (Pexp_poly (a, b))
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let object_ ?loc ?attrs a = mk ?loc ?attrs (Pexp_object a)
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let newtype ?loc ?attrs a b = mk ?loc ?attrs (Pexp_newtype (a, b))
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let pack ?loc ?attrs a = mk ?loc ?attrs (Pexp_pack a)
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let open_ ?loc ?attrs a b = mk ?loc ?attrs (Pexp_open (a, b))
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let extension ?loc ?attrs a = mk ?loc ?attrs (Pexp_extension a)
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let case lhs ?guard rhs =
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{
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pc_lhs = lhs;
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pc_guard = guard;
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pc_rhs = rhs;
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}
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end
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module Mty = struct
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let mk ?(loc = !default_loc) ?(attrs = []) d = {pmty_desc = d; pmty_loc = loc; pmty_attributes = attrs}
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let attr d a = {d with pmty_attributes = d.pmty_attributes @ [a]}
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let ident ?loc ?attrs a = mk ?loc ?attrs (Pmty_ident a)
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let signature ?loc ?attrs a = mk ?loc ?attrs (Pmty_signature a)
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let functor_ ?loc ?attrs a b c = mk ?loc ?attrs (Pmty_functor (a, b, c))
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let with_ ?loc ?attrs a b = mk ?loc ?attrs (Pmty_with (a, b))
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let typeof_ ?loc ?attrs a = mk ?loc ?attrs (Pmty_typeof a)
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let extension ?loc ?attrs a = mk ?loc ?attrs (Pmty_extension a)
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end
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module Mod = struct
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let mk ?(loc = !default_loc) ?(attrs = []) d = {pmod_desc = d; pmod_loc = loc; pmod_attributes = attrs}
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let attr d a = {d with pmod_attributes = d.pmod_attributes @ [a]}
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let ident ?loc ?attrs x = mk ?loc ?attrs (Pmod_ident x)
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let structure ?loc ?attrs x = mk ?loc ?attrs (Pmod_structure x)
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let functor_ ?loc ?attrs arg arg_ty body = mk ?loc ?attrs (Pmod_functor (arg, arg_ty, body))
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let apply ?loc ?attrs m1 m2 = mk ?loc ?attrs (Pmod_apply (m1, m2))
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let constraint_ ?loc ?attrs m mty = mk ?loc ?attrs (Pmod_constraint (m, mty))
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let unpack ?loc ?attrs e = mk ?loc ?attrs (Pmod_unpack e)
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let extension ?loc ?attrs a = mk ?loc ?attrs (Pmod_extension a)
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end
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module Sig = struct
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let mk ?(loc = !default_loc) d = {psig_desc = d; psig_loc = loc}
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let value ?loc a = mk ?loc (Psig_value a)
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let type_ ?loc a = mk ?loc (Psig_type a)
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let exception_ ?loc a = mk ?loc (Psig_exception a)
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let module_ ?loc a = mk ?loc (Psig_module a)
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let rec_module ?loc a = mk ?loc (Psig_recmodule a)
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let modtype ?loc a = mk ?loc (Psig_modtype a)
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let open_ ?loc ?(attrs = []) a = mk ?loc (Psig_open (a, attrs))
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let include_ ?loc ?(attrs = []) a = mk ?loc (Psig_include (a, attrs))
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let class_ ?loc a = mk ?loc (Psig_class a)
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let class_type ?loc a = mk ?loc (Psig_class_type a)
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let extension ?loc ?(attrs = []) a = mk ?loc (Psig_extension (a, attrs))
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let attribute ?loc a = mk ?loc (Psig_attribute a)
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end
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module Str = struct
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let mk ?(loc = !default_loc) d = {pstr_desc = d; pstr_loc = loc}
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let eval ?loc ?(attrs = []) a = mk ?loc (Pstr_eval (a, attrs))
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let value ?loc ?(attrs = []) a b = mk ?loc (Pstr_value (a, b, attrs))
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let primitive ?loc a = mk ?loc (Pstr_primitive a)
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let type_ ?loc a = mk ?loc (Pstr_type a)
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let exception_ ?loc a = mk ?loc (Pstr_exception a)
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let exn_rebind ?loc ?(attrs = []) a b = mk ?loc (Pstr_exn_rebind (a, b, attrs))
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let module_ ?loc a = mk ?loc (Pstr_module a)
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let rec_module ?loc a = mk ?loc (Pstr_recmodule a)
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let modtype ?loc a = mk ?loc (Pstr_modtype a)
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let open_ ?loc ?(attrs = []) a = mk ?loc (Pstr_open (a, attrs))
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let class_ ?loc a = mk ?loc (Pstr_class a)
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let class_type ?loc a = mk ?loc (Pstr_class_type a)
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let include_ ?loc ?(attrs = []) a = mk ?loc (Pstr_include (a, attrs))
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let extension ?loc ?(attrs = []) a = mk ?loc (Pstr_extension (a, attrs))
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let attribute ?loc a = mk ?loc (Pstr_attribute a)
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end
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module Cl = struct
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let mk ?(loc = !default_loc) ?(attrs = []) d =
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{
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pcl_desc = d;
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pcl_loc = loc;
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pcl_attributes = attrs;
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}
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let attr d a = {d with pcl_attributes = d.pcl_attributes @ [a]}
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let constr ?loc ?attrs a b = mk ?loc ?attrs (Pcl_constr (a, b))
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let structure ?loc ?attrs a = mk ?loc ?attrs (Pcl_structure a)
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let fun_ ?loc ?attrs a b c d = mk ?loc ?attrs (Pcl_fun (a, b, c, d))
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let apply ?loc ?attrs a b = mk ?loc ?attrs (Pcl_apply (a, b))
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let let_ ?loc ?attrs a b c = mk ?loc ?attrs (Pcl_let (a, b, c))
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let constraint_ ?loc ?attrs a b = mk ?loc ?attrs (Pcl_constraint (a, b))
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let extension ?loc ?attrs a = mk ?loc ?attrs (Pcl_extension a)
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end
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module Cty = struct
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let mk ?(loc = !default_loc) ?(attrs = []) d =
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{
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pcty_desc = d;
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pcty_loc = loc;
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pcty_attributes = attrs;
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}
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let attr d a = {d with pcty_attributes = d.pcty_attributes @ [a]}
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let constr ?loc ?attrs a b = mk ?loc ?attrs (Pcty_constr (a, b))
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let signature ?loc ?attrs a = mk ?loc ?attrs (Pcty_signature a)
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let fun_ ?loc ?attrs a b c = mk ?loc ?attrs (Pcty_fun (a, b, c))
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let extension ?loc ?attrs a = mk ?loc ?attrs (Pcty_extension a)
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end
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module Ctf = struct
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let mk ?(loc = !default_loc) ?(attrs = []) d =
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{
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pctf_desc = d;
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pctf_loc = loc;
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pctf_attributes = attrs;
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}
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let attr d a = {d with pctf_attributes = d.pctf_attributes @ [a]}
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let inherit_ ?loc ?attrs a = mk ?loc ?attrs (Pctf_inherit a)
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let val_ ?loc ?attrs a b c d = mk ?loc ?attrs (Pctf_val (a, b, c, d))
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let method_ ?loc ?attrs a b c d = mk ?loc ?attrs (Pctf_method (a, b, c, d))
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let constraint_ ?loc ?attrs a b = mk ?loc ?attrs (Pctf_constraint (a, b))
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let extension ?loc ?attrs a = mk ?loc ?attrs (Pctf_extension a)
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end
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module Cf = struct
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let mk ?(loc = !default_loc) ?(attrs = []) d =
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{
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pcf_desc = d;
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pcf_loc = loc;
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pcf_attributes = attrs;
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}
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let attr d a = {d with pcf_attributes = d.pcf_attributes @ [a]}
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let inherit_ ?loc ?attrs a b c = mk ?loc ?attrs (Pcf_inherit (a, b, c))
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let val_ ?loc ?attrs a b c = mk ?loc ?attrs (Pcf_val (a, b, c))
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let method_ ?loc ?attrs a b c = mk ?loc ?attrs (Pcf_method (a, b, c))
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let constraint_ ?loc ?attrs a b = mk ?loc ?attrs (Pcf_constraint (a, b))
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let initializer_ ?loc ?attrs a = mk ?loc ?attrs (Pcf_initializer a)
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let extension ?loc ?attrs a = mk ?loc ?attrs (Pcf_extension a)
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let virtual_ ct = Cfk_virtual ct
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let concrete o e = Cfk_concrete (o, e)
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end
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module Val = struct
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let mk ?(loc = !default_loc) ?(attrs = []) ?(prim = []) name typ =
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{
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pval_name = name;
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pval_type = typ;
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pval_attributes = attrs;
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pval_loc = loc;
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pval_prim = prim;
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}
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end
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module Mtb = struct
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let mk ?(attrs = []) name typ =
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{
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pmtb_name = name;
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pmtb_type = typ;
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pmtb_attributes = attrs;
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}
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end
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module Md = struct
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let mk ?(attrs = []) name typ =
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{
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pmd_name = name;
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pmd_type = typ;
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pmd_attributes = attrs;
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}
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end
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module Mtd = struct
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let mk ?(attrs = []) ?typ name =
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{
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pmtd_name = name;
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pmtd_type = typ;
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pmtd_attributes = attrs;
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}
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end
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module Mb = struct
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let mk ?(attrs = []) name expr =
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{
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pmb_name = name;
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pmb_expr = expr;
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pmb_attributes = attrs;
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}
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end
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module Ci = struct
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let mk ?(loc = !default_loc) ?(attrs = []) ?(virt = Concrete) ?(params = [], !default_loc) name expr =
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{
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pci_virt = virt;
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pci_params = params;
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pci_name = name;
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pci_expr = expr;
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pci_attributes = attrs;
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pci_loc = loc;
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}
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end
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module Type = struct
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let mk ?(loc = !default_loc) ?(attrs = [])
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?(params = [])
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?(cstrs = [])
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?(kind = Ptype_abstract)
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?(priv = Public)
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?manifest
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name =
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{
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ptype_name = name;
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ptype_params = params;
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ptype_cstrs = cstrs;
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ptype_kind = kind;
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ptype_private = priv;
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ptype_manifest = manifest;
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ptype_attributes = attrs;
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ptype_loc = loc;
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}
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end
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module Cd = struct
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let mk ?(loc = !default_loc) ?(attrs = []) ?(args = []) ?res name =
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{
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pcd_name = name;
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pcd_args = args;
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pcd_res = res;
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pcd_loc = loc;
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pcd_attributes = attrs;
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}
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end
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module Ld = struct
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let mk ?(loc = !default_loc) ?(attrs = []) ?(mut = Immutable) name typ =
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{
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pld_name = name;
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pld_mutable = mut;
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pld_type = typ;
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pld_loc = loc;
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pld_attributes = attrs;
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}
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end
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module Csig = struct
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let mk ?(loc = !default_loc) self fields =
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{
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pcsig_self = self;
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pcsig_fields = fields;
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pcsig_loc = loc;
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}
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end
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module Convenience = struct
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open Location
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let may_tuple tup = function
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| [] -> None
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| [x] -> Some x
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| l -> Some (tup l)
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let lid s = mkloc (Longident.parse s) !default_loc
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let tuple l = Exp.tuple l
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let constr s args = Exp.construct (lid s) (may_tuple Exp.tuple args) false
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let nil () = constr "[]" []
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let unit () = constr "()" []
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let cons hd tl = constr "::" [hd; tl]
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let list l = List.fold_right cons l (nil ())
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let str s = Exp.constant (Const_string (s, None))
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let int x = Exp.constant (Const_int x)
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let char x = Exp.constant (Const_char x)
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let float x = Exp.constant (Const_float (string_of_float x))
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let record ?over l =
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Exp.record (List.map (fun (s, e) -> (lid s, e)) l) over
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let func l = Exp.function_ "" None (List.map (fun (p, e) -> Exp.case p e) l)
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let lam ?(label = "") ?default pat exp = Exp.function_ label default [{pc_lhs=pat; pc_guard=None; pc_rhs=exp}]
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let app f l = Exp.apply f (List.map (fun a -> "", a) l)
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let evar s = Exp.ident (lid s)
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let let_in ?(recursive = false) b body =
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Exp.let_ (if recursive then Recursive else Nonrecursive) b body
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let pvar s = Pat.var (mkloc s !default_loc)
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let pconstr s args = Pat.construct (lid s) (may_tuple Pat.tuple args) true
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let punit () = pconstr "()" []
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let get_str = function
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| {pexp_desc=Pexp_constant (Const_string (s, _)); _} -> Some s
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| e -> None
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let get_lid = function
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| {pexp_desc=Pexp_ident{txt=id;_};_} ->
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Some (String.concat "." (Longident.flatten id))
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| _ -> None
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let has_attr s attrs = List.mem_assoc s attrs
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let find_attr s attrs =
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try Some (List.assoc s attrs)
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with Not_found -> None
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end
|