Module Lib

Lib: record of operations, backtrack, low-level sections

This module provides a general mechanism to keep a trace of all operations and to backtrack (undo) those operations. It provides also the section mechanism (at a low level; discharge is not known at this step).

type is_type = bool
type export_flag =
| Export
| Import
type export = (export_flag * Libobject.open_filter) option
val make_foname : Names.Id.t -> Libobject.object_name
type 'summary node =
| CompilingLibrary of Nametab.object_prefix
| OpenedModule of is_type * export * Nametab.object_prefix * 'summary
| OpenedSection of Nametab.object_prefix * 'summary
val node_prefix : 'summary node -> Nametab.object_prefix

Extract the object_prefix component. Note that it is the prefix of the objects *inside* this node, eg in Module M. we have OpenedModule with prefix containing M.

type 'summary library_segment = ('summary node * Libobject.t list) list

Adding operations (which call the cache method, and getting the current list of operations (most recent ones coming first).

val add_leaf : Libobject.obj -> unit

The function contents gives access to the current entire segment

val contents : unit -> Summary.Interp.frozen library_segment
Functions relative to current path
val prefix : unit -> Nametab.object_prefix

User-side names

cwd() is (prefix()).obj_dir current_mp() is (prefix()).obj_mp

Inside a library A.B module M section S, we have

  • library_dp = A.B
  • cwd = A.B.M.S
  • cwd_except_section = A.B.M
  • current_dirpath true = M.S
  • current_dirpath false = S
  • current_mp = MPdot(MPfile A.B, M)

make_path (resp make_path_except_section) uses cwd (resp cwd_except_section) make_kn uses current_mp

val cwd : unit -> Names.DirPath.t
val cwd_except_section : unit -> Names.DirPath.t
val current_dirpath : bool -> Names.DirPath.t
val make_path : Names.Id.t -> Libnames.full_path
val make_path_except_section : Names.Id.t -> Libnames.full_path
val current_mp : unit -> Names.ModPath.t

Kernel-side names

val make_kn : Names.Id.t -> Names.KerName.t
val sections_are_opened : unit -> bool

Are we inside an opened section

val sections_depth : unit -> int
val is_module_or_modtype : unit -> bool

Are we inside an opened module type

val is_modtype : unit -> bool
val is_modtype_strict : unit -> bool
val is_module : unit -> bool
module type StagedLibS = sig ... end

The StagedLibS abstraction describes operations and traversal for Lib at a given stage.

We provide two instances of StagedLibS, corresponding to the Synterp and Interp stages.

Compilation units
val start_compilation : Names.DirPath.t -> Names.ModPath.t -> unit

Finalize the compilation of a library and return respectively the library prefix, the regular objects, and the syntax-related objects.

val library_dp : unit -> Names.DirPath.t

The function library_dp returns the DirPath.t of the current compiling library (or default_library)

val split_modpath : Names.ModPath.t -> Names.DirPath.t * Names.Id.t list

Extract the library part of a name even if in a section

val library_part : Names.GlobRef.t -> Names.DirPath.t
val section_segment_of_constant : Names.Constant.t -> Cooking.cooking_info

Section management for discharge

val section_segment_of_inductive : Names.MutInd.t -> Cooking.cooking_info
val section_segment_of_reference : Names.GlobRef.t -> Cooking.cooking_info
val section_instance : Names.GlobRef.t -> Constr.t array
val is_in_section : Names.GlobRef.t -> bool
Discharge: decrease the section level if in the current section

Compatibility layer

val init : unit -> unit
val open_section : Names.Id.t -> unit
val close_section : unit -> unit