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3649f92975
This changes the `decl_ctx` to be toplevel only, with flattened references to uids for most elements. The module hierarchy, which is still useful in a few places, is kept separately. Module names are also changed to UIDs early on, and support for module aliases has been added (needs testing). This resolves some issues with lookup, and should be much more robust, as well as more convenient for most lookups. The `decl_ctx` was also extended for string ident lookups, which avoids having to keep the desugared resolution structure available throughout the compilation chain.
92 lines
3.0 KiB
OCaml
92 lines
3.0 KiB
OCaml
(* This file is part of the Catala compiler, a specification language for tax
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and social benefits computation rules. Copyright (C) 2020 Inria, contributor:
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Denis Merigoux <denis.merigoux@inria.fr>
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Licensed under the Apache License, Version 2.0 (the "License"); you may not
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use this file except in compliance with the License. You may obtain a copy of
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the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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License for the specific language governing permissions and limitations under
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the License. *)
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(** Global identifiers factories using a generative functor *)
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(** The information carried in global identifiers *)
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module type Info = sig
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type info
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val to_string : info -> string
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val format : Format.formatter -> info -> unit
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val equal : info -> info -> bool
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(** Equality disregards position *)
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val compare : info -> info -> int
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(** Comparison disregards position *)
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end
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module MarkedString : Info with type info = string Mark.pos
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(** The only kind of information carried in Catala identifiers is the original
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string of the identifier annotated with the position where it is declared or
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used. *)
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(** Identifiers have abstract types, but are comparable so they can be used as
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keys in maps or sets. Their underlying information can be retrieved at any
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time. *)
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module type Id = sig
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type t
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type info
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val fresh : info -> t
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val get_info : t -> info
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val compare : t -> t -> int
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val equal : t -> t -> bool
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val format : Format.formatter -> t -> unit
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val to_string : t -> string
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val hash : t -> int
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module Set : Set.S with type elt = t
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module Map : Map.S with type key = t
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end
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(** Used to define a consistent specific style when printing the different kinds
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of uids *)
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module type Style = sig
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val style : Ocolor_types.style
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end
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(** This is the generative functor that ensures that two modules resulting from
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two different calls to [Make] will be viewed as different types [t] by the
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OCaml typechecker. Prevents mixing up different sorts of identifiers. *)
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module Make (X : Info) (_ : Style) () : Id with type info = X.info
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(** Shortcut for creating a kind of uids over marked strings *)
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module Gen (_ : Style) () : Id with type info = MarkedString.info
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(** {2 Handling of Uids with additional path information} *)
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module Module : Id with type info = MarkedString.info
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module Path : sig
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type t = Module.t list
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val to_string : t -> string
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val format : Format.formatter -> t -> unit
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val equal : t -> t -> bool
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val compare : t -> t -> int
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end
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(** Same as [Gen] but also registers path information *)
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module Gen_qualified (_ : Style) () : sig
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include Id with type info = Path.t * MarkedString.info
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val fresh : Path.t -> MarkedString.info -> t
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val path : t -> Path.t
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val get_info : t -> MarkedString.info
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end
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