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94 lines
3.2 KiB
OCaml
94 lines
3.2 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) 2020 Inria, contributor:
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Louis Gesbert <louis.gesbert@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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open Shared_ast
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open Ast
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let expr ctx env e =
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(* The typer takes care of disambiguating: this consists in: - ensuring
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[EAbs.tys] doesn't contain any [TAny] - [EDStructAccess.name_opt] is always
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[Some] *)
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(* Intermediate unboxings are fine since the last [untype] will rebox in
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depth *)
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Typing.check_expr ~leave_unresolved:false ctx ~env (Expr.unbox e)
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let rule ctx env rule =
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let env =
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match rule.rule_parameter with
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| None -> env
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| Some (vars_and_types, _) ->
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ListLabels.fold_right vars_and_types ~init:env ~f:(fun ((v, _), t) ->
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Typing.Env.add_var v t)
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in
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(* Note: we could use the known rule type here to direct typing. We choose not
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to because it shouldn't be needed for disambiguation, and we prefer to
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focus on local type errors first. *)
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{
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rule with
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rule_just = expr ctx env rule.rule_just;
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rule_cons = expr ctx env rule.rule_cons;
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}
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let scope ctx env scope =
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let env = Typing.Env.open_scope scope.scope_uid env in
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let scope_defs =
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ScopeDef.Map.map
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(fun def ->
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let scope_def_rules =
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(* Note: ordering in file order might be better for error reporting ?
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When we gather errors, the ordering could be done afterwards,
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though *)
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RuleName.Map.map (rule ctx env) def.scope_def_rules
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in
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{ def with scope_def_rules })
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scope.scope_defs
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in
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let scope_assertions =
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AssertionName.Map.map (expr ctx env) scope.scope_assertions
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in
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{ scope with scope_defs; scope_assertions }
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let program prg =
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let env =
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TopdefName.Map.fold
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(fun name (_e, ty) env -> Typing.Env.add_toplevel_var name ty env)
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prg.program_topdefs
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(Typing.Env.empty prg.program_ctx)
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in
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let program_topdefs =
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TopdefName.Map.map
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(fun (e, ty) -> Expr.unbox (expr prg.program_ctx env (Expr.box e)), ty)
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prg.program_topdefs
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in
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let env =
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ScopeName.Map.fold
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(fun scope_name scope env ->
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let vars =
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ScopeDef.Map.fold
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(fun var def vars ->
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match var with
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| Var (v, _states) -> ScopeVar.Map.add v def.scope_def_typ vars
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| SubScopeVar _ -> vars)
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scope.scope_defs ScopeVar.Map.empty
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in
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Typing.Env.add_scope scope_name ~vars env)
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prg.program_scopes env
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in
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let program_scopes =
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ScopeName.Map.map (scope prg.program_ctx env) prg.program_scopes
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in
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{ prg with program_topdefs; program_scopes }
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