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