Extension points¶

type attribute = {
attr_name : string Asttypes.loc ;
attr_payload : payload ;
attr_loc : Location.t ;
}

type extension = string Asttypes.loc * payload

type attributes = attribute list

type payload =
| PStr of structure
| PSig of signature
| PTyp of core_type
| PPat of pattern * expression option

Core language¶

type core_type = {
ptyp_desc : core_type_desc ;
ptyp_loc : Location.t ;
ptyp_loc_stack : location_stack ;
ptyp_attributes : attributes ;
}

type core_type_desc =
| Ptyp_any
| Ptyp_var of string
| Ptyp_arrow of Asttypes.arg_label * core_type * core_type
| Ptyp_tuple of core_type list
| Ptyp_constr of Longident.t Asttypes.loc * core_type list
| Ptyp_object of object_field list * Asttypes.closed_flag
| Ptyp_class of Longident.t Asttypes.loc * core_type list
| Ptyp_alias of core_type * string
| Ptyp_variant of row_field list * Asttypes.closed_flag * Asttypes.label list option
| Ptyp_poly of string Asttypes.loc list * core_type
| Ptyp_package of package_type
| Ptyp_extension of extension

type package_type = Longident.t Asttypes.loc * (Longident.t Asttypes.loc * core_type) list

type row_field = {
prf_desc : row_field_desc ;
prf_loc : Location.t ;
prf_attributes : attributes ;
}

type row_field_desc =
| Rtag of Asttypes.label Asttypes.loc * bool * core_type list
| Rinherit of core_type

type object_field = {
pof_desc : object_field_desc ;
pof_loc : Location.t ;
pof_attributes : attributes ;
}

type object_field_desc =
| Otag of Asttypes.label Asttypes.loc * core_type
| Oinherit of core_type

type pattern = {
ppat_desc : pattern_desc ;
ppat_loc : Location.t ;
ppat_loc_stack : location_stack ;
ppat_attributes : attributes ;
}

type pattern_desc =
| Ppat_any
| Ppat_var of string Asttypes.loc
| Ppat_alias of pattern * string Asttypes.loc
| Ppat_constant of constant
| Ppat_interval of constant * constant
| Ppat_tuple of pattern list
| Ppat_construct of Longident.t Asttypes.loc * (string Asttypes.loc list * pattern) option
| Ppat_variant of Asttypes.label * pattern option
| Ppat_record of (Longident.t Asttypes.loc * pattern) list * Asttypes.closed_flag
| Ppat_array of pattern list
| Ppat_or of pattern * pattern
| Ppat_constraint of pattern * core_type
| Ppat_type of Longident.t Asttypes.loc
| Ppat_lazy of pattern
| Ppat_unpack of string option Asttypes.loc
| Ppat_exception of pattern
| Ppat_extension of extension
| Ppat_open of Longident.t Asttypes.loc * pattern

type expression = {
pexp_desc : expression_desc ;
pexp_loc : Location.t ;
pexp_loc_stack : location_stack ;
pexp_attributes : attributes ;
}

type expression_desc =
| Pexp_ident of Longident.t Asttypes.loc
| Pexp_constant of constant
| Pexp_let of Asttypes.rec_flag * value_binding list * expression
| Pexp_function of case list
| Pexp_fun of Asttypes.arg_label * expression option * pattern * expression
| Pexp_apply of expression * (Asttypes.arg_label * expression) list
| Pexp_match of expression * case list
| Pexp_try of expression * case list
| Pexp_tuple of expression list
| Pexp_construct of Longident.t Asttypes.loc * expression option
| Pexp_variant of Asttypes.label * expression option
| Pexp_record of (Longident.t Asttypes.loc * expression) list * expression option
| Pexp_field of expression * Longident.t Asttypes.loc
| Pexp_setfield of expression * Longident.t Asttypes.loc * expression
| Pexp_array of expression list
| Pexp_ifthenelse of expression * expression * expression option
| Pexp_sequence of expression * expression
| Pexp_while of expression * expression
| Pexp_for of pattern * expression * expression * Asttypes.direction_flag * expression
| Pexp_constraint of expression * core_type
| Pexp_coerce of expression * core_type option * core_type
| Pexp_send of expression * Asttypes.label Asttypes.loc
| Pexp_new of Longident.t Asttypes.loc
| Pexp_setinstvar of Asttypes.label Asttypes.loc * expression
| Pexp_override of (Asttypes.label Asttypes.loc * expression) list
| Pexp_letmodule of string option Asttypes.loc * module_expr * expression
| Pexp_letexception of extension_constructor * expression
| Pexp_assert of expression
| Pexp_lazy of expression
| Pexp_poly of expression * core_type option
| Pexp_object of class_structure
| Pexp_newtype of string Asttypes.loc * expression
| Pexp_pack of module_expr
| Pexp_open of open_declaration * expression
| Pexp_letop of letop
| Pexp_extension of extension
| Pexp_unreachable

type case = {
pc_lhs : pattern ;
pc_guard : expression option ;
pc_rhs : expression ;
}

type letop = {
let_ : binding_op ;
ands : binding_op list ;
body : expression ;
}

type binding_op = {
pbop_op : string Asttypes.loc ;
pbop_pat : pattern ;
pbop_exp : expression ;
pbop_loc : Location.t ;
}

type value_description = {
pval_name : string Asttypes.loc ;
pval_type : core_type ;
pval_prim : string list ;
pval_attributes : attributes ;
pval_loc : Location.t ;
}

type type_declaration = {
ptype_name : string Asttypes.loc ;
ptype_params : (core_type * (Asttypes.variance * Asttypes.injectivity)) list ;
ptype_cstrs : (core_type * core_type * Location.t) list ;
ptype_kind : type_kind ;
ptype_private : Asttypes.private_flag ;
ptype_manifest : core_type option ;
ptype_attributes : attributes ;
ptype_loc : Location.t ;
}

type type_kind =
| Ptype_abstract
| Ptype_variant of constructor_declaration list
| Ptype_record of label_declaration list
| Ptype_open

type label_declaration = {
pld_name : string Asttypes.loc ;
pld_mutable : Asttypes.mutable_flag ;
pld_type : core_type ;
pld_loc : Location.t ;
pld_attributes : attributes ;
}

type constructor_declaration = {
pcd_name : string Asttypes.loc ;
pcd_args : constructor_arguments ;
pcd_res : core_type option ;
pcd_loc : Location.t ;
pcd_attributes : attributes ;
}

type constructor_arguments =
| Pcstr_tuple of core_type list
| Pcstr_record of label_declaration list

type type_extension = {
ptyext_path : Longident.t Asttypes.loc ;
ptyext_params : (core_type * (Asttypes.variance * Asttypes.injectivity)) list ;
ptyext_constructors : extension_constructor list ;
ptyext_private : Asttypes.private_flag ;
ptyext_loc : Location.t ;
ptyext_attributes : attributes ;
}

type extension_constructor = {
pext_name : string Asttypes.loc ;
pext_kind : extension_constructor_kind ;
pext_loc : Location.t ;
pext_attributes : attributes ;
}

type type_exception = {
ptyexn_constructor : extension_constructor ;
ptyexn_loc : Location.t ;
ptyexn_attributes : attributes ;
}

type extension_constructor_kind =
| Pext_decl of constructor_arguments * core_type option
| Pext_rebind of Longident.t Asttypes.loc

Class language¶

type class_type = {
pcty_desc : class_type_desc ;
pcty_loc : Location.t ;
pcty_attributes : attributes ;
}

type class_type_desc =
| Pcty_constr of Longident.t Asttypes.loc * core_type list
| Pcty_signature of class_signature
| Pcty_arrow of Asttypes.arg_label * core_type * class_type
| Pcty_extension of extension
| Pcty_open of open_description * class_type

type class_signature = {
pcsig_self : core_type ;
pcsig_fields : class_type_field list ;
}

type class_type_field = {
pctf_desc : class_type_field_desc ;
pctf_loc : Location.t ;
pctf_attributes : attributes ;
}

type class_type_field_desc =
| Pctf_inherit of class_type
| Pctf_val of (Asttypes.label Asttypes.loc * Asttypes.mutable_flag * Asttypes.virtual_flag * core_type)
| Pctf_method of (Asttypes.label Asttypes.loc * Asttypes.private_flag * Asttypes.virtual_flag * core_type)
| Pctf_constraint of (core_type * core_type)
| Pctf_attribute of attribute
| Pctf_extension of extension

type 'a class_infos = {
pci_virt : Asttypes.virtual_flag ;
pci_params : (core_type * (Asttypes.variance * Asttypes.injectivity)) list ;
pci_name : string Asttypes.loc ;
pci_expr : 'a ;
pci_loc : Location.t ;
pci_attributes : attributes ;
}

type class_description = class_type class_infos

type class_type_declaration = class_type class_infos

type class_expr = {
pcl_desc : class_expr_desc ;
pcl_loc : Location.t ;
pcl_attributes : attributes ;
}

type class_expr_desc =
| Pcl_constr of Longident.t Asttypes.loc * core_type list
| Pcl_structure of class_structure
| Pcl_fun of Asttypes.arg_label * expression option * pattern * class_expr
| Pcl_apply of class_expr * (Asttypes.arg_label * expression) list
| Pcl_let of Asttypes.rec_flag * value_binding list * class_expr
| Pcl_constraint of class_expr * class_type
| Pcl_extension of extension
| Pcl_open of open_description * class_expr

type class_structure = {
pcstr_self : pattern ;
pcstr_fields : class_field list ;
}

type class_field = {
pcf_desc : class_field_desc ;
pcf_loc : Location.t ;
pcf_attributes : attributes ;
}

type class_field_desc =
| Pcf_inherit of Asttypes.override_flag * class_expr * string Asttypes.loc option
| Pcf_val of (Asttypes.label Asttypes.loc * Asttypes.mutable_flag * class_field_kind)
| Pcf_method of (Asttypes.label Asttypes.loc * Asttypes.private_flag * class_field_kind)
| Pcf_constraint of (core_type * core_type)
| Pcf_initializer of expression
| Pcf_attribute of attribute
| Pcf_extension of extension

type class_field_kind =
| Cfk_virtual of core_type
| Cfk_concrete of Asttypes.override_flag * expression

type class_declaration = class_expr class_infos

Module language¶

type module_type = {
pmty_desc : module_type_desc ;
pmty_loc : Location.t ;
pmty_attributes : attributes ;
}

type module_type_desc =
| Pmty_ident of Longident.t Asttypes.loc
| Pmty_signature of signature
| Pmty_functor of functor_parameter * module_type
| Pmty_with of module_type * with_constraint list
| Pmty_typeof of module_expr
| Pmty_extension of extension
| Pmty_alias of Longident.t Asttypes.loc

type functor_parameter =
| Unit
| Named of string option Asttypes.loc * module_type

type signature = signature_item list

type signature_item = {
psig_desc : signature_item_desc ;
psig_loc : Location.t ;
}

type signature_item_desc =
| Psig_value of value_description
| Psig_type of Asttypes.rec_flag * type_declaration list
| Psig_typesubst of type_declaration list
| Psig_typext of type_extension
| Psig_exception of type_exception
| Psig_module of module_declaration
| Psig_modsubst of module_substitution
| Psig_recmodule of module_declaration list
| Psig_modtype of module_type_declaration
| Psig_modtypesubst of module_type_declaration
| Psig_open of open_description
| Psig_include of include_description
| Psig_class of class_description list
| Psig_class_type of class_type_declaration list
| Psig_attribute of attribute
| Psig_extension of extension * attributes

type module_declaration = {
pmd_name : string option Asttypes.loc ;
pmd_type : module_type ;
pmd_attributes : attributes ;
pmd_loc : Location.t ;
}

type module_substitution = {
pms_name : string Asttypes.loc ;
pms_manifest : Longident.t Asttypes.loc ;
pms_attributes : attributes ;
pms_loc : Location.t ;
}

type module_type_declaration = {
pmtd_name : string Asttypes.loc ;
pmtd_type : module_type option ;
pmtd_attributes : attributes ;
pmtd_loc : Location.t ;
}

type 'a open_infos = {
popen_expr : 'a ;
popen_override : Asttypes.override_flag ;
popen_loc : Location.t ;
popen_attributes : attributes ;
}

type open_description = Longident.t Asttypes.loc open_infos

type open_declaration = module_expr open_infos

type 'a include_infos = {
pincl_mod : 'a ;
pincl_loc : Location.t ;
pincl_attributes : attributes ;
}

type include_description = module_type include_infos

type include_declaration = module_expr include_infos

type with_constraint =
| Pwith_type of Longident.t Asttypes.loc * type_declaration
| Pwith_module of Longident.t Asttypes.loc * Longident.t Asttypes.loc
| Pwith_modtype of Longident.t Asttypes.loc * module_type
| Pwith_modtypesubst of Longident.t Asttypes.loc * module_type
| Pwith_typesubst of Longident.t Asttypes.loc * type_declaration
| Pwith_modsubst of Longident.t Asttypes.loc * Longident.t Asttypes.loc

type module_expr = {
pmod_desc : module_expr_desc ;
pmod_loc : Location.t ;
pmod_attributes : attributes ;
}

type module_expr_desc =
| Pmod_ident of Longident.t Asttypes.loc
| Pmod_structure of structure
| Pmod_functor of functor_parameter * module_expr
| Pmod_apply of module_expr * module_expr
| Pmod_constraint of module_expr * module_type
| Pmod_unpack of expression
| Pmod_extension of extension

type structure = structure_item list

type structure_item = {
pstr_desc : structure_item_desc ;
pstr_loc : Location.t ;
}

type structure_item_desc =
| Pstr_eval of expression * attributes
| Pstr_value of Asttypes.rec_flag * value_binding list
| Pstr_primitive of value_description
| Pstr_type of Asttypes.rec_flag * type_declaration list
| Pstr_typext of type_extension
| Pstr_exception of type_exception
| Pstr_module of module_binding
| Pstr_recmodule of module_binding list
| Pstr_modtype of module_type_declaration
| Pstr_open of open_declaration
| Pstr_class of class_declaration list
| Pstr_class_type of class_type_declaration list
| Pstr_include of include_declaration
| Pstr_attribute of attribute
| Pstr_extension of extension * attributes

type value_binding = {
pvb_pat : pattern ;
pvb_expr : expression ;
pvb_attributes : attributes ;
pvb_loc : Location.t ;
}

type module_binding = {
pmb_name : string option Asttypes.loc ;
pmb_expr : module_expr ;
pmb_attributes : attributes ;
pmb_loc : Location.t ;
}

Toplevel¶

type toplevel_phrase =
| Ptop_def of structure
| Ptop_dir of toplevel_directive

type toplevel_directive = {
pdir_name : string Asttypes.loc ;
pdir_arg : directive_argument option ;
pdir_loc : Location.t ;
}

type directive_argument = {
pdira_desc : directive_argument_desc ;
pdira_loc : Location.t ;
}

type directive_argument_desc =
| Pdir_string of string
| Pdir_int of string * char option
| Pdir_ident of Longident.t
| Pdir_bool of bool