Struct ParamUsesChecker

struct ParamUsesChecker<'a, 'genv, 'tcx> {
    infcx: &'a InferCtxt<'genv, 'tcx>,
    xi: SnapshotMap<ParamId, ()>,
    errors: Errors<'genv>,
}

Fields

infcx: &'a InferCtxt<'genv, 'tcx>

xi: SnapshotMap<ParamId, ()>

Keeps track of all refinement parameters that are used as an index such that their value is fully determined. The name xi is taken from 1, where the well-formedness judgment uses an uppercase Xi (Ξ) for a context that is similar in purpose.

This is basically a set of fhir::ParamId implemented with a snapshot map such that elements can be removed in batch when there’s a change in polarity.

errors: Errors<'genv>

Implementations

impl<'a, 'genv, 'tcx> ParamUsesChecker<'a, 'genv, 'tcx>

fn new(infcx: &'a InferCtxt<'genv, 'tcx>) -> Self

fn run(self, f: impl FnOnce(&mut Self)) -> Result<(), ErrorGuaranteed>

fn check_func_params_uses( &mut self, expr: &Expr<'_>, is_top_level_conj: bool, is_top_level_var: bool, )

Checks that refinement parameters of function sort are used in allowed positions.

fn check_params_are_value_determined(&mut self, params: &[RefineParam<'_>])

Trait Implementations

impl<'genv> Visitor<'genv> for ParamUsesChecker<'_, 'genv, '_>

fn visit_node(&mut self, node: &OwnerNode<'genv>)

fn visit_ty_alias(&mut self, ty_alias: &TyAlias<'genv>)

fn visit_struct_def(&mut self, struct_def: &StructDef<'genv>)

fn visit_variant(&mut self, variant: &VariantDef<'genv>)

fn visit_variant_ret(&mut self, ret: &VariantRet<'genv>)

fn visit_fn_output(&mut self, output: &FnOutput<'genv>)

fn visit_ty(&mut self, ty: &Ty<'genv>)

fn visit_expr(&mut self, expr: &Expr<'_>)

fn visit_path_segment(&mut self, segment: &PathSegment<'genv>)

fn visit_item(&mut self, item: &Item<'v>)

fn visit_trait_item(&mut self, trait_item: &TraitItem<'v>)

fn visit_impl_item(&mut self, impl_item: &ImplItem<'v>)

fn visit_generics(&mut self, generics: &Generics<'v>)

fn visit_where_predicate(&mut self, predicate: &WhereBoundPredicate<'v>)

fn visit_impl(&mut self, impl_: &Impl<'v>)

fn visit_impl_assoc_reft(&mut self, assoc_reft: &ImplAssocReft<'v>)

fn visit_trait_assoc_reft(&mut self, assoc_reft: &TraitAssocReft<'v>)

fn visit_enum_def(&mut self, enum_def: &EnumDef<'v>)

fn visit_field_def(&mut self, field: &FieldDef<'v>)

fn visit_opaque_ty(&mut self, opaque_ty: &OpaqueTy<'v>)

fn visit_generic_bound(&mut self, bound: &GenericBound<'v>)

fn visit_poly_trait_ref(&mut self, trait_ref: &PolyTraitRef<'v>)

fn visit_fn_sig(&mut self, sig: &FnSig<'v>)

fn visit_fn_decl(&mut self, decl: &FnDecl<'v>)

fn visit_refine_param(&mut self, param: &RefineParam<'v>)

fn visit_requires(&mut self, requires: &Requires<'v>)

fn visit_ensures(&mut self, ensures: &Ensures<'v>)

fn visit_generic_arg(&mut self, arg: &GenericArg<'v>)

fn visit_lifetime(&mut self, _lft: &Lifetime)

fn visit_bty(&mut self, bty: &BaseTy<'v>)

fn visit_qpath(&mut self, qpath: &QPath<'v>)

fn visit_path(&mut self, path: &Path<'v>)

fn visit_assoc_item_constraint(&mut self, constraint: &AssocItemConstraint<'v>)

fn visit_sort(&mut self, sort: &Sort<'v>)

fn visit_sort_path(&mut self, path: &SortPath<'v>)

fn visit_poly_func_sort(&mut self, func: &PolyFuncSort<'v>)

fn visit_func_sort(&mut self, func: &FuncSort<'v>)

fn visit_field_expr(&mut self, expr: &FieldExpr<'v>)

fn visit_alias_reft(&mut self, alias_reft: &AliasReft<'v>)

fn visit_literal(&mut self, _lit: &Lit)

fn visit_path_expr(&mut self, _path: &PathExpr<'v>)