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49 lines
2.0 KiB
OCaml
49 lines
2.0 KiB
OCaml
(* This file is part of the Catala compiler, a specification language for tax
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and social benefits computation rules. Copyright (C) 2022 Inria, contributor:
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Denis Merigoux <denis.merigoux@inria.fr>, Alain Delaët
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<alain.delaet--tixeuil@inria.fr>
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Licensed under the Apache License, Version 2.0 (the "License"); you may not
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use this file except in compliance with the License. You may obtain a copy of
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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
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distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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License for the specific language governing permissions and limitations under
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the License. *)
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(** Generates verification conditions from scope definitions *)
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open Utils
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open Shared_ast
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type verification_condition_kind =
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| NoEmptyError
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(** This verification condition checks whether a definition never returns
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an empty error *)
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| NoOverlappingExceptions
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(** This verification condition checks whether a definition never returns
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a conflict error *)
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type verification_condition = {
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vc_guard : typed Dcalc.Ast.marked_expr;
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(** This expression should have type [bool]*)
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vc_kind : verification_condition_kind;
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vc_scope : ScopeName.t;
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vc_variable : typed Dcalc.Ast.var Marked.pos;
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vc_free_vars_typ : (typed Dcalc.Ast.expr, typ Marked.pos) Var.Map.t;
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(** Types of the locally free variables in [vc_guard]. The types of other
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free variables linked to scope variables can be obtained with
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[Dcalc.Ast.variable_types]. *)
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}
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val generate_verification_conditions :
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typed Dcalc.Ast.program -> ScopeName.t option -> verification_condition list
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(** [generate_verification_conditions p None] will generate the verification
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conditions for all the variables of all the scopes of the program [p], while
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[generate_verification_conditions p (Some s)] will focus only on the
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variables of scope [s]. *)
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