catala/compiler/lcalc/ast.mli
2021-06-23 17:47:34 +02:00

98 lines
3.1 KiB
OCaml

(* This file is part of the Catala compiler, a specification language for tax and social benefits
computation rules. Copyright (C) 2020 Inria, contributor: Denis Merigoux
<denis.merigoux@inria.fr>
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
in compliance with the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License
is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
or implied. See the License for the specific language governing permissions and limitations under
the License. *)
open Utils
(** Abstract syntax tree for the lambda calculus *)
(** {1 Abstract syntax tree} *)
(** The expressions use the {{:https://lepigre.fr/ocaml-bindlib/} Bindlib} library, based on
higher-order abstract syntax*)
type lit =
| LBool of bool
| LInt of Runtime.integer
| LRat of Runtime.decimal
| LMoney of Runtime.money
| LUnit
| LDate of Runtime.date
| LDuration of Runtime.duration
type except = ConflictError | EmptyError | NoValueProvided | Crash
type expr =
| EVar of expr Bindlib.var Pos.marked
| ETuple of expr Pos.marked list * Dcalc.Ast.StructName.t option
(** The [MarkedString.info] is the former struct field name*)
| ETupleAccess of
expr Pos.marked * int * Dcalc.Ast.StructName.t option * Dcalc.Ast.typ Pos.marked list
(** The [MarkedString.info] is the former struct field name *)
| EInj of expr Pos.marked * int * Dcalc.Ast.EnumName.t * Dcalc.Ast.typ Pos.marked list
(** The [MarkedString.info] is the former enum case name *)
| EMatch of expr Pos.marked * expr Pos.marked list * Dcalc.Ast.EnumName.t
(** The [MarkedString.info] is the former enum case name *)
| EArray of expr Pos.marked list
| ELit of lit
| EAbs of (expr, expr Pos.marked) Bindlib.mbinder Pos.marked * Dcalc.Ast.typ Pos.marked list
| EApp of expr Pos.marked * expr Pos.marked list
| EAssert of expr Pos.marked
| EOp of Dcalc.Ast.operator
| EIfThenElse of expr Pos.marked * expr Pos.marked * expr Pos.marked
| ERaise of except
| ECatch of expr Pos.marked * except * expr Pos.marked
(** {1 Variable helpers} *)
module Var : sig
type t = expr Bindlib.var
val make : string Pos.marked -> t
val compare : t -> t -> int
end
module VarMap : Map.S with type key = Var.t
type vars = expr Bindlib.mvar
val make_var : Var.t Pos.marked -> expr Pos.marked Bindlib.box
val make_abs :
vars ->
expr Pos.marked Bindlib.box ->
Pos.t ->
Dcalc.Ast.typ Pos.marked list ->
Pos.t ->
expr Pos.marked Bindlib.box
val make_app :
expr Pos.marked Bindlib.box ->
expr Pos.marked Bindlib.box list ->
Pos.t ->
expr Pos.marked Bindlib.box
val make_let_in :
Var.t ->
Dcalc.Ast.typ Pos.marked ->
expr Pos.marked Bindlib.box ->
expr Pos.marked Bindlib.box ->
expr Pos.marked Bindlib.box
val handle_default : Var.t
type binder = (expr, expr Pos.marked) Bindlib.binder
type program = { decl_ctx : Dcalc.Ast.decl_ctx; scopes : (Var.t * expr Pos.marked) list }