ocaml-base-compiler 4.14.2

cmt and cmti files format.

The layout of a cmt file is as follows: <cmt> := {<cmi>} <cmt magic> {cmt infos} {<source info>} where <cmi> is the cmi file format: <cmi> := <cmi magic> <cmi info>. More precisely, the optional <cmi> part must be present if and only if the file is:

a cmti, or
a cmt, for a ml file which has no corresponding mli (hence no corresponding cmti).

Thus, we provide a common reading function for cmi and cmt(i) files which returns an option for each of the three parts: cmi info, cmt info, source info.

type binary_annots =

| Packed of Types.signature * string list
| Implementation of Typedtree.structure
| Interface of Typedtree.signature
| Partial_implementation of binary_part array
| Partial_interface of binary_part array

and binary_part =

| Partial_structure of Typedtree.structure
| Partial_structure_item of Typedtree.structure_item
| Partial_expression of Typedtree.expression
| Partial_pattern : 'k Typedtree.pattern_category * 'k Typedtree.general_pattern -> binary_part
| Partial_class_expr of Typedtree.class_expr
| Partial_signature of Typedtree.signature
| Partial_signature_item of Typedtree.signature_item
| Partial_module_type of Typedtree.module_type

type cmt_infos = {

cmt_modname : Misc.modname;
cmt_annots : binary_annots;
cmt_value_dependencies : (Types.value_description * Types.value_description) list;
cmt_comments : (string * Location.t) list;
cmt_args : string array;
cmt_sourcefile : string option;
cmt_builddir : string;
cmt_loadpath : string list;
cmt_source_digest : string option;
cmt_initial_env : Env.t;
cmt_imports : Misc.crcs;
cmt_interface_digest : Digest.t option;
cmt_use_summaries : bool;
cmt_uid_to_loc : Location.t Shape.Uid.Tbl.t;
cmt_impl_shape : Shape.t option;

}

type error =

| Not_a_typedtree of string

exception Error of error

val read : string -> Cmi_format.cmi_infos option * cmt_infos option

read filename opens filename, and extract both the cmi_infos, if it exists, and the cmt_infos, if it exists. Thus, it can be used with .cmi, .cmt and .cmti files.

.cmti files always contain a cmi_infos at the beginning. .cmt files only contain a cmi_infos at the beginning if there is no associated .cmti file.

val read_cmt : string -> cmt_infos

val read_cmi : string -> Cmi_format.cmi_infos

val save_cmt : 
  string ->
  string ->
  binary_annots ->
  string option ->
  Env.t ->
  Cmi_format.cmi_infos option ->
  Shape.t option ->
  unit

save_cmt filename modname binary_annots sourcefile initial_env cmi writes a cmt(i) file.

val read_magic_number : in_channel -> string

val clear : unit -> unit

val add_saved_type : binary_part -> unit

val get_saved_types : unit -> binary_part list

val set_saved_types : binary_part list -> unit

val record_value_dependency : 
  Types.value_description ->
  Types.value_description ->
  unit

package ocaml-base-compiler