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(**************************************************************************)
(* *)
(* OCaml *)
(* *)
(* Xavier Leroy, projet Cristal, INRIA Rocquencourt *)
(* *)
(* Copyright 1996 Institut National de Recherche en Informatique et *)
(* en Automatique. *)
(* *)
(* All rights reserved. This file is distributed under the terms of *)
(* the GNU Lesser General Public License version 2.1, with the *)
(* special exception on linking described in the file LICENSE. *)
(* *)
(**************************************************************************)
(* Abstract syntax tree after typing *)
open Asttypes
open Types
open Mode
type constant =
Const_int of int
| Const_char of char
| Const_string of string * Location.t * string option
| Const_float of string
| Const_float32 of string
| Const_unboxed_float of string
| Const_unboxed_float32 of string
| Const_int32 of int32
| Const_int64 of int64
| Const_nativeint of nativeint
| Const_unboxed_int32 of int32
| Const_unboxed_int64 of int64
| Const_unboxed_nativeint of nativeint
module Uid = Shape.Uid
(* Value expressions for the core language *)
type partial = Partial | Total
type attribute = Parsetree.attribute
type attributes = attribute list
type value = Value_pattern
type computation = Computation_pattern
type _ pattern_category =
| Value : value pattern_category
| Computation : computation pattern_category
type unique_barrier = Mode.Uniqueness.r
type unique_use = Mode.Uniqueness.r * Mode.Linearity.l
type alloc_mode = {
mode : Mode.Alloc.r;
locality_context : Env.locality_context option;
}
type texp_field_boxing =
| Boxing of alloc_mode * unique_use
| Non_boxing of unique_use
let aliased_many_use =
( Mode.Uniqueness.disallow_left Mode.Uniqueness.aliased,
Mode.Linearity.disallow_right Mode.Linearity.many )
type pattern = value general_pattern
and 'k general_pattern = 'k pattern_desc pattern_data
and 'a pattern_data =
{ pat_desc: 'a;
pat_loc: Location.t;
pat_extra : (pat_extra * Location.t * attribute list) list;
pat_type: type_expr;
pat_env: Env.t;
pat_attributes: attribute list;
}
and pat_extra =
| Tpat_constraint of core_type
| Tpat_type of Path.t * Longident.t loc
| Tpat_open of Path.t * Longident.t loc * Env.t
| Tpat_unpack
and 'k pattern_desc =
(* value patterns *)
| Tpat_any : value pattern_desc
| Tpat_var : Ident.t * string loc * Uid.t * Mode.Value.l -> value pattern_desc
| Tpat_alias :
value general_pattern * Ident.t * string loc * Uid.t * Mode.Value.l -> value pattern_desc
| Tpat_constant : constant -> value pattern_desc
| Tpat_tuple : (string option * value general_pattern) list -> value pattern_desc
| Tpat_unboxed_tuple :
(string option * value general_pattern * Jkind.sort) list ->
value pattern_desc
| Tpat_construct :
Longident.t loc * constructor_description * value general_pattern list
* (Ident.t loc list * core_type) option ->
value pattern_desc
| Tpat_variant :
label * value general_pattern option * row_desc ref ->
value pattern_desc
| Tpat_record :
(Longident.t loc * label_description * value general_pattern) list *
closed_flag ->
value pattern_desc
| Tpat_array :
mutability * Jkind.sort * value general_pattern list -> value pattern_desc
| Tpat_lazy : value general_pattern -> value pattern_desc
(* computation patterns *)
| Tpat_value : tpat_value_argument -> computation pattern_desc
| Tpat_exception : value general_pattern -> computation pattern_desc
(* generic constructions *)
| Tpat_or :
'k general_pattern * 'k general_pattern * row_desc option ->
'k pattern_desc
and tpat_value_argument = value general_pattern
and expression =
{ exp_desc: expression_desc;
exp_loc: Location.t;
exp_extra: (exp_extra * Location.t * attribute list) list;
exp_type: type_expr;
exp_env: Env.t;
exp_attributes: attribute list;
}
and exp_extra =
| Texp_constraint of core_type option * Mode.Alloc.Const.Option.t
| Texp_coerce of core_type option * core_type
| Texp_poly of core_type option
| Texp_newtype of Ident.t * string loc * Jkind.annotation option * Uid.t
| Texp_stack
and arg_label = Types.arg_label =
| Nolabel
| Labelled of string
| Optional of string
| Position of string
and expression_desc =
Texp_ident of
Path.t * Longident.t loc * Types.value_description * ident_kind * unique_use
| Texp_constant of constant
| Texp_let of rec_flag * value_binding list * expression
| Texp_function of
{ params : function_param list;
body : function_body;
ret_mode : Mode.Alloc.l;
ret_sort : Jkind.sort;
alloc_mode : alloc_mode;
zero_alloc : Zero_alloc.t;
}
| Texp_apply of
expression * (arg_label * apply_arg) list * apply_position *
Mode.Locality.l * Zero_alloc.assume option
| Texp_match of expression * Jkind.sort * computation case list * partial
| Texp_try of expression * value case list
| Texp_tuple of (string option * expression) list * alloc_mode
| Texp_unboxed_tuple of (string option * expression * Jkind.sort) list
| Texp_construct of
Longident.t loc * constructor_description * expression list * alloc_mode option
| Texp_variant of label * (expression * alloc_mode) option
| Texp_record of {
fields : ( Types.label_description * record_label_definition ) array;
representation : Types.record_representation;
extended_expression : expression option;
alloc_mode : alloc_mode option
}
| Texp_field of
expression * Longident.t loc * label_description * texp_field_boxing
| Texp_setfield of
expression * Mode.Locality.l * Longident.t loc * label_description * expression
| Texp_array of mutability * Jkind.Sort.t * expression list * alloc_mode
| Texp_list_comprehension of comprehension
| Texp_array_comprehension of mutability * Jkind.sort * comprehension
| Texp_ifthenelse of expression * expression * expression option
| Texp_sequence of expression * Jkind.sort * expression
| Texp_while of {
wh_cond : expression;
wh_body : expression;
wh_body_sort : Jkind.sort
}
| Texp_for of {
for_id : Ident.t;
for_pat : Parsetree.pattern;
for_from : expression;
for_to : expression;
for_dir : direction_flag;
for_body : expression;
for_body_sort : Jkind.sort;
}
| Texp_send of expression * meth * apply_position
| Texp_new of
Path.t * Longident.t loc * Types.class_declaration * apply_position
| Texp_instvar of Path.t * Path.t * string loc
| Texp_setinstvar of Path.t * Path.t * string loc * expression
| Texp_override of Path.t * (Ident.t * string loc * expression) list
| Texp_letmodule of
Ident.t option * string option loc * Types.module_presence * module_expr *
expression
| Texp_letexception of extension_constructor * expression
| Texp_assert of expression * Location.t
| Texp_lazy of expression
| Texp_object of class_structure * string list
| Texp_pack of module_expr
| Texp_letop of {
let_ : binding_op;
ands : binding_op list;
param : Ident.t;
param_sort : Jkind.sort;
body : value case;
body_sort : Jkind.sort;
partial : partial;
}
| Texp_unreachable
| Texp_extension_constructor of Longident.t loc * Path.t
| Texp_open of open_declaration * expression
| Texp_probe of { name:string; handler:expression; enabled_at_init:bool; }
| Texp_probe_is_enabled of { name:string }
| Texp_exclave of expression
| Texp_src_pos
and ident_kind =
| Id_value
| Id_prim of Mode.Locality.l option * Jkind.Sort.t option
and meth =
| Tmeth_name of string
| Tmeth_val of Ident.t
| Tmeth_ancestor of Ident.t * Path.t
and comprehension =
{
comp_body : expression;
comp_clauses : comprehension_clause list
}
and comprehension_clause =
| Texp_comp_for of comprehension_clause_binding list
| Texp_comp_when of expression
and comprehension_clause_binding =
{
comp_cb_iterator : comprehension_iterator;
comp_cb_attributes : attribute list
}
and comprehension_iterator =
| Texp_comp_range of
{ ident : Ident.t
; pattern : Parsetree.pattern
; start : expression
; stop : expression
; direction : direction_flag }
| Texp_comp_in of
{ pattern : pattern
; sequence : expression }
and 'k case =
{
c_lhs: 'k general_pattern;
c_guard: expression option;
c_rhs: expression;
}
and function_curry =
| More_args of { partial_mode : Mode.Alloc.l }
| Final_arg
and function_param =
{
fp_arg_label: arg_label;
fp_param: Ident.t;
fp_partial: partial;
fp_kind: function_param_kind;
fp_sort: Jkind.sort;
fp_mode: Mode.Alloc.l;
fp_curry: function_curry;
fp_newtypes: (Ident.t * string loc * Jkind.annotation option * Uid.t) list;
fp_loc: Location.t;
}
and function_param_kind =
| Tparam_pat of pattern
| Tparam_optional_default of pattern * expression * Jkind.sort
and function_body =
| Tfunction_body of expression
| Tfunction_cases of function_cases
and function_cases =
{ fc_cases: value case list;
fc_env : Env.t;
fc_arg_mode: Mode.Alloc.l;
fc_arg_sort: Jkind.sort;
fc_ret_type : Types.type_expr;
fc_partial: partial;
fc_param: Ident.t;
fc_loc: Location.t;
fc_exp_extra: exp_extra option;
fc_attributes: attributes;
}
and record_label_definition =
| Kept of Types.type_expr * mutability * unique_use
| Overridden of Longident.t loc * expression
and binding_op =
{
bop_op_path : Path.t;
bop_op_name : string loc;
bop_op_val : Types.value_description;
bop_op_type : Types.type_expr;
bop_op_return_sort : Jkind.sort;
bop_exp : expression;
bop_exp_sort : Jkind.sort;
bop_loc : Location.t;
}
and ('a, 'b) arg_or_omitted =
| Arg of 'a
| Omitted of 'b
and omitted_parameter =
{ mode_closure : Mode.Alloc.r;
mode_arg : Mode.Alloc.l;
mode_ret : Mode.Alloc.l;
sort_arg : Jkind.sort }
and apply_arg = (expression * Jkind.sort, omitted_parameter) arg_or_omitted
and apply_position =
| Tail
| Nontail
| Default
(* Value expressions for the class language *)
and class_expr =
{
cl_desc: class_expr_desc;
cl_loc: Location.t;
cl_type: Types.class_type;
cl_env: Env.t;
cl_attributes: attribute list;
}
and class_expr_desc =
Tcl_ident of Path.t * Longident.t loc * core_type list
| Tcl_structure of class_structure
| Tcl_fun of
arg_label * pattern * (Ident.t * expression) list
* class_expr * partial
| Tcl_apply of class_expr * (arg_label * apply_arg) list
| Tcl_let of rec_flag * value_binding list *
(Ident.t * expression) list * class_expr
| Tcl_constraint of
class_expr * class_type option * string list * string list * MethSet.t
(* Visible instance variables, methods and concrete methods *)
| Tcl_open of open_description * class_expr
and class_structure =
{
cstr_self: pattern;
cstr_fields: class_field list;
cstr_type: Types.class_signature;
cstr_meths: Ident.t Meths.t;
}
and class_field =
{
cf_desc: class_field_desc;
cf_loc: Location.t;
cf_attributes: attribute list;
}
and class_field_kind =
| Tcfk_virtual of core_type
| Tcfk_concrete of override_flag * expression
and class_field_desc =
Tcf_inherit of
override_flag * class_expr * string option * (string * Ident.t) list *
(string * Ident.t) list
(* Inherited instance variables and concrete methods *)
| Tcf_val of string loc * mutable_flag * Ident.t * class_field_kind * bool
| Tcf_method of string loc * private_flag * class_field_kind
| Tcf_constraint of core_type * core_type
| Tcf_initializer of expression
| Tcf_attribute of attribute
(* Value expressions for the module language *)
and module_expr =
{ mod_desc: module_expr_desc;
mod_loc: Location.t;
mod_type: Types.module_type;
mod_env: Env.t;
mod_attributes: attribute list;
}
and module_type_constraint =
Tmodtype_implicit
| Tmodtype_explicit of module_type
and functor_parameter =
| Unit
| Named of Ident.t option * string option loc * module_type
and module_expr_desc =
Tmod_ident of Path.t * Longident.t loc
| Tmod_structure of structure
| Tmod_functor of functor_parameter * module_expr
| Tmod_apply of module_expr * module_expr * module_coercion
| Tmod_apply_unit of module_expr
| Tmod_constraint of
module_expr * Types.module_type * module_type_constraint * module_coercion
| Tmod_unpack of expression * Types.module_type
and structure = {
str_items : structure_item list;
str_type : Types.signature;
str_final_env : Env.t;
}
and structure_item =
{ str_desc : structure_item_desc;
str_loc : Location.t;
str_env : Env.t
}
and structure_item_desc =
Tstr_eval of expression * Jkind.sort * attributes
| Tstr_value of rec_flag * value_binding list
| Tstr_primitive of value_description
| Tstr_type of rec_flag * type_declaration list
| Tstr_typext of type_extension
| Tstr_exception of type_exception
| Tstr_module of module_binding
| Tstr_recmodule of module_binding list
| Tstr_modtype of module_type_declaration
| Tstr_open of open_declaration
| Tstr_class of (class_declaration * string list) list
| Tstr_class_type of (Ident.t * string loc * class_type_declaration) list
| Tstr_include of include_declaration
| Tstr_attribute of attribute
and module_binding =
{
mb_id: Ident.t option;
mb_name: string option loc;
mb_uid: Uid.t;
mb_presence: module_presence;
mb_expr: module_expr;
mb_attributes: attribute list;
mb_loc: Location.t;
}
and value_binding =
{
vb_pat: pattern;
vb_expr: expression;
vb_rec_kind: Value_rec_types.recursive_binding_kind;
vb_sort: Jkind.sort;
vb_attributes: attributes;
vb_loc: Location.t;
}
and module_coercion =
Tcoerce_none
| Tcoerce_structure of (int * module_coercion) list *
(Ident.t * int * module_coercion) list
| Tcoerce_functor of module_coercion * module_coercion
| Tcoerce_primitive of primitive_coercion
| Tcoerce_alias of Env.t * Path.t * module_coercion
and module_type =
{ mty_desc: module_type_desc;
mty_type : Types.module_type;
mty_env : Env.t;
mty_loc: Location.t;
mty_attributes: attribute list;
}
and module_type_desc =
Tmty_ident of Path.t * Longident.t loc
| Tmty_signature of signature
| Tmty_functor of functor_parameter * module_type
| Tmty_with of module_type * (Path.t * Longident.t loc * with_constraint) list
| Tmty_typeof of module_expr
| Tmty_alias of Path.t * Longident.t loc
| Tmty_strengthen of module_type * Path.t * Longident.t loc
(* Keep primitive type information for type-based lambda-code specialization *)
and primitive_coercion =
{
pc_desc: Primitive.description;
pc_type: type_expr;
pc_poly_mode: Mode.Locality.l option;
pc_poly_sort: Jkind.Sort.t option;
pc_env: Env.t;
pc_loc : Location.t;
}
and signature = {
sig_items : signature_item list;
sig_type : Types.signature;
sig_final_env : Env.t;
}
and signature_item =
{ sig_desc: signature_item_desc;
sig_env : Env.t; (* BINANNOT ADDED *)
sig_loc: Location.t }
and signature_item_desc =
Tsig_value of value_description
| Tsig_type of rec_flag * type_declaration list
| Tsig_typesubst of type_declaration list
| Tsig_typext of type_extension
| Tsig_exception of type_exception
| Tsig_module of module_declaration
| Tsig_modsubst of module_substitution
| Tsig_recmodule of module_declaration list
| Tsig_modtype of module_type_declaration
| Tsig_modtypesubst of module_type_declaration
| Tsig_open of open_description
| Tsig_include of include_description * Mode.Modality.Value.Const.t
| Tsig_class of class_description list
| Tsig_class_type of class_type_declaration list
| Tsig_attribute of attribute
and module_declaration =
{
md_id: Ident.t option;
md_name: string option loc;
md_uid: Uid.t;
md_presence: module_presence;
md_type: module_type;
md_attributes: attribute list;
md_loc: Location.t;
}
and module_substitution =
{
ms_id: Ident.t;
ms_name: string loc;
ms_uid: Uid.t;
ms_manifest: Path.t;
ms_txt: Longident.t loc;
ms_attributes: attributes;
ms_loc: Location.t;
}
and module_type_declaration =
{
mtd_id: Ident.t;
mtd_name: string loc;
mtd_uid: Uid.t;
mtd_type: module_type option;
mtd_attributes: attribute list;
mtd_loc: Location.t;
}
and 'a open_infos =
{
open_expr: 'a;
open_bound_items: Types.signature;
open_override: override_flag;
open_env: Env.t;
open_loc: Location.t;
open_attributes: attribute list;
}
and open_description = (Path.t * Longident.t loc) open_infos
and open_declaration = module_expr open_infos
and include_kind =
| Tincl_structure
| Tincl_functor of (Ident.t * module_coercion) list
| Tincl_gen_functor of (Ident.t * module_coercion) list
and 'a include_infos =
{
incl_mod: 'a;
incl_type: Types.signature;
incl_loc: Location.t;
incl_kind: include_kind;
incl_attributes: attribute list;
}
and include_description = module_type include_infos
and include_declaration = module_expr include_infos
and with_constraint =
Twith_type of type_declaration
| Twith_module of Path.t * Longident.t loc
| Twith_modtype of module_type
| Twith_typesubst of type_declaration
| Twith_modsubst of Path.t * Longident.t loc
| Twith_modtypesubst of module_type
and core_type =
(* mutable because of [Typeclass.declare_method] *)
{ mutable ctyp_desc : core_type_desc;
mutable ctyp_type : type_expr;
ctyp_env : Env.t; (* BINANNOT ADDED *)
ctyp_loc : Location.t;
ctyp_attributes: attribute list;
}
and core_type_desc =
| Ttyp_var of string option * Jkind.annotation option
| Ttyp_arrow of arg_label * core_type * core_type
| Ttyp_tuple of (string option * core_type) list
| Ttyp_unboxed_tuple of (string option * core_type) list
| Ttyp_constr of Path.t * Longident.t loc * core_type list
| Ttyp_object of object_field list * closed_flag
| Ttyp_class of Path.t * Longident.t loc * core_type list
| Ttyp_alias of core_type * string loc option * Jkind.annotation option
| Ttyp_variant of row_field list * closed_flag * label list option
| Ttyp_poly of (string * Jkind.annotation option) list * core_type
| Ttyp_package of package_type
| Ttyp_open of Path.t * Longident.t loc * core_type
| Ttyp_call_pos
and package_type = {
pack_path : Path.t;
pack_fields : (Longident.t loc * core_type) list;
pack_type : Types.module_type;
pack_txt : Longident.t loc;
}
and row_field = {
rf_desc : row_field_desc;
rf_loc : Location.t;
rf_attributes : attributes;
}
and row_field_desc =
Ttag of string loc * bool * core_type list
| Tinherit of core_type
and object_field = {
of_desc : object_field_desc;
of_loc : Location.t;
of_attributes : attributes;
}
and object_field_desc =
| OTtag of string loc * core_type
| OTinherit of core_type
and value_description =
{ val_id: Ident.t;
val_name: string loc;
val_desc: core_type;
val_val: Types.value_description;
val_prim: string list;
val_loc: Location.t;
val_attributes: attribute list;
}
and type_declaration =
{ typ_id: Ident.t;
typ_name: string loc;
typ_params: (core_type * (variance * injectivity)) list;
typ_type: Types.type_declaration;
typ_cstrs: (core_type * core_type * Location.t) list;
typ_kind: type_kind;
typ_private: private_flag;
typ_manifest: core_type option;
typ_loc: Location.t;
typ_attributes: attribute list;
typ_jkind_annotation: Parsetree.jkind_annotation option;
}
and type_kind =
Ttype_abstract
| Ttype_variant of constructor_declaration list
| Ttype_record of label_declaration list
| Ttype_open
and label_declaration =
{
ld_id: Ident.t;
ld_name: string loc;
ld_uid: Uid.t;
ld_mutable: mutability;
ld_modalities: Modality.Value.Const.t;
ld_type: core_type;
ld_loc: Location.t;
ld_attributes: attribute list;
}
and constructor_declaration =
{
cd_id: Ident.t;
cd_name: string loc;
cd_uid: Uid.t;
cd_vars: (string * Jkind.annotation option) list;
cd_args: constructor_arguments;
cd_res: core_type option;
cd_loc: Location.t;
cd_attributes: attribute list;
}
and constructor_argument =
{
ca_modalities: Modality.Value.Const.t;
ca_type: core_type;
ca_loc: Location.t;
}
and constructor_arguments =
| Cstr_tuple of constructor_argument list
| Cstr_record of label_declaration list
and type_extension =
{
tyext_path: Path.t;
tyext_txt: Longident.t loc;
tyext_params: (core_type * (variance * injectivity)) list;
tyext_constructors: extension_constructor list;
tyext_private: private_flag;
tyext_loc: Location.t;
tyext_attributes: attribute list;
}
and type_exception =
{
tyexn_constructor: extension_constructor;
tyexn_loc: Location.t;
tyexn_attributes: attribute list;
}
and extension_constructor =
{
ext_id: Ident.t;
ext_name: string loc;
ext_type: Types.extension_constructor;
ext_kind: extension_constructor_kind;
ext_loc: Location.t;
ext_attributes: attribute list;
}
and extension_constructor_kind =
Text_decl of (string * Jkind.annotation option) list *
constructor_arguments *
core_type option
| Text_rebind of Path.t * Longident.t loc
and class_type =
{
cltyp_desc: class_type_desc;
cltyp_type: Types.class_type;
cltyp_env: Env.t;
cltyp_loc: Location.t;
cltyp_attributes: attribute list;
}
and class_type_desc =
Tcty_constr of Path.t * Longident.t loc * core_type list
| Tcty_signature of class_signature
| Tcty_arrow of arg_label * core_type * class_type
| Tcty_open of open_description * class_type
and class_signature = {
csig_self: core_type;
csig_fields: class_type_field list;
csig_type: Types.class_signature;
}
and class_type_field = {
ctf_desc: class_type_field_desc;
ctf_loc: Location.t;
ctf_attributes: attribute list;
}
and class_type_field_desc =
| Tctf_inherit of class_type
| Tctf_val of (string * mutable_flag * virtual_flag * core_type)
| Tctf_method of (string * private_flag * virtual_flag * core_type)
| Tctf_constraint of (core_type * core_type)
| Tctf_attribute of attribute
and class_declaration =
class_expr class_infos
and class_description =
class_type class_infos
and class_type_declaration =
class_type class_infos
and 'a class_infos =
{ ci_virt: virtual_flag;
ci_params: (core_type * (variance * injectivity)) list;
ci_id_name: string loc;
ci_id_class: Ident.t;
ci_id_class_type: Ident.t;
ci_id_object: Ident.t;
ci_expr: 'a;
ci_decl: Types.class_declaration;
ci_type_decl: Types.class_type_declaration;
ci_loc: Location.t;
ci_attributes: attribute list;
}
type argument_interface = {
ai_signature: Types.signature;
ai_coercion_from_primary: module_coercion;
}
type implementation = {
structure: structure;
coercion: module_coercion;
signature: Types.signature;
argument_interface: argument_interface option;
shape: Shape.t;
}
type item_declaration =
| Value of value_description
| Value_binding of value_binding
| Type of type_declaration
| Constructor of constructor_declaration
| Extension_constructor of extension_constructor
| Label of label_declaration
| Module of module_declaration
| Module_substitution of module_substitution
| Module_binding of module_binding
| Module_type of module_type_declaration
| Class of class_declaration
| Class_type of class_type_declaration
(* Auxiliary functions over the a.s.t. *)
let as_computation_pattern (p : pattern) : computation general_pattern =
{
pat_desc = Tpat_value p;
pat_loc = p.pat_loc;
pat_extra = [];
pat_type = p.pat_type;
pat_env = p.pat_env;
pat_attributes = [];
}
let function_arity params body =
List.length params +
match body with
| Tfunction_body _ -> 0
| Tfunction_cases _ -> 1
let rec classify_pattern_desc : type k . k pattern_desc -> k pattern_category =
function
| Tpat_alias _ -> Value
| Tpat_tuple _ -> Value
| Tpat_unboxed_tuple _ -> Value
| Tpat_construct _ -> Value
| Tpat_variant _ -> Value
| Tpat_record _ -> Value
| Tpat_array _ -> Value
| Tpat_lazy _ -> Value
| Tpat_any -> Value
| Tpat_var _ -> Value
| Tpat_constant _ -> Value
| Tpat_value _ -> Computation
| Tpat_exception _ -> Computation
| Tpat_or(p1, p2, _) ->
begin match classify_pattern p1, classify_pattern p2 with
| Value, Value -> Value
| Computation, Computation -> Computation
end
and classify_pattern
: type k . k general_pattern -> k pattern_category
= fun pat ->
classify_pattern_desc pat.pat_desc
type pattern_action =
{ f : 'k . 'k general_pattern -> unit }
let shallow_iter_pattern_desc
: type k . pattern_action -> k pattern_desc -> unit
= fun f -> function
| Tpat_alias(p, _, _, _, _) -> f.f p
| Tpat_tuple patl -> List.iter (fun (_, p) -> f.f p) patl
| Tpat_unboxed_tuple patl -> List.iter (fun (_, p, _) -> f.f p) patl
| Tpat_construct(_, _, patl, _) -> List.iter f.f patl
| Tpat_variant(_, pat, _) -> Option.iter f.f pat
| Tpat_record (lbl_pat_list, _) ->
List.iter (fun (_, _, pat) -> f.f pat) lbl_pat_list
| Tpat_array (_, _, patl) -> List.iter f.f patl
| Tpat_lazy p -> f.f p
| Tpat_any
| Tpat_var _
| Tpat_constant _ -> ()
| Tpat_value p -> f.f p
| Tpat_exception p -> f.f p
| Tpat_or(p1, p2, _) -> f.f p1; f.f p2
type pattern_transformation =
{ f : 'k . 'k general_pattern -> 'k general_pattern }
let shallow_map_pattern_desc
: type k . pattern_transformation -> k pattern_desc -> k pattern_desc
= fun f d -> match d with
| Tpat_alias (p1, id, s, uid, m) ->
Tpat_alias (f.f p1, id, s, uid, m)
| Tpat_tuple pats ->
Tpat_tuple (List.map (fun (label, pat) -> label, f.f pat) pats)
| Tpat_unboxed_tuple pats ->
Tpat_unboxed_tuple
(List.map (fun (label, pat, sort) -> label, f.f pat, sort) pats)
| Tpat_record (lpats, closed) ->
Tpat_record (List.map (fun (lid, l,p) -> lid, l, f.f p) lpats, closed)
| Tpat_construct (lid, c, pats, ty) ->
Tpat_construct (lid, c, List.map f.f pats, ty)
| Tpat_array (am, arg_sort, pats) ->
Tpat_array (am, arg_sort, List.map f.f pats)
| Tpat_lazy p1 -> Tpat_lazy (f.f p1)
| Tpat_variant (x1, Some p1, x2) ->
Tpat_variant (x1, Some (f.f p1), x2)
| Tpat_var _
| Tpat_constant _
| Tpat_any
| Tpat_variant (_,None,_) -> d
| Tpat_value p -> Tpat_value (f.f p)
| Tpat_exception p -> Tpat_exception (f.f p)
| Tpat_or (p1,p2,path) ->
Tpat_or (f.f p1, f.f p2, path)
let rec iter_general_pattern
: type k . pattern_action -> k general_pattern -> unit
= fun f p ->
f.f p;
shallow_iter_pattern_desc
{ f = fun p -> iter_general_pattern f p }
p.pat_desc
let iter_pattern (f : pattern -> unit) =
iter_general_pattern
{ f = fun (type k) (p : k general_pattern) ->
match classify_pattern p with
| Value -> f p
| Computation -> () }
type pattern_predicate = { f : 'k . 'k general_pattern -> bool }
let exists_general_pattern (f : pattern_predicate) p =
let exception Found in
match
iter_general_pattern
{ f = fun p -> if f.f p then raise Found else () }
p
with
| exception Found -> true
| () -> false
let exists_pattern (f : pattern -> bool) =
exists_general_pattern
{ f = fun (type k) (p : k general_pattern) ->
match classify_pattern p with
| Value -> f p
| Computation -> false }
(* List the identifiers bound by a pattern or a let *)
let rec iter_bound_idents
: type k . _ -> k general_pattern -> _
= fun f pat ->
match pat.pat_desc with
| Tpat_var (id, s, uid, _mode) ->
f (id,s,pat.pat_type, uid)
| Tpat_alias(p, id, s, uid, _mode) ->
iter_bound_idents f p;
f (id,s,pat.pat_type, uid)
| Tpat_or(p1, _, _) ->
(* Invariant : both arguments bind the same variables *)
iter_bound_idents f p1
| d ->
shallow_iter_pattern_desc
{ f = fun p -> iter_bound_idents f p }
d
type full_bound_ident_action =
Ident.t -> string loc -> type_expr -> Uid.t -> Mode.Value.l -> Jkind.sort -> unit
(* The intent is that the sort should be the sort of the type of the pattern.
It's used to avoid computing jkinds from types. `f` then gets passed
the sorts of the variables.