Struct rustc_const_eval::transform::check_consts::check::Checker

pub struct Checker<'mir, 'tcx> {
    ccx: &'mir ConstCx<'mir, 'tcx>,
    qualifs: Qualifs<'mir, 'tcx>,
    span: Span,
    local_has_storage_dead: Option<BitSet<Local>>,
    error_emitted: Option<ErrorReported>,
    secondary_errors: Vec<Diagnostic>,
}

Fields

ccx: &'mir ConstCx<'mir, 'tcx>

qualifs: Qualifs<'mir, 'tcx>

span: Span

The span of the current statement.

local_has_storage_dead: Option<BitSet<Local>>

A set that stores for each local whether it has a StorageDead for it somewhere.

error_emitted: Option<ErrorReported>

secondary_errors: Vec<Diagnostic>

Implementations

impl<'mir, 'tcx> Checker<'mir, 'tcx>

pub fn new(ccx: &'mir ConstCx<'mir, 'tcx>) -> Self

pub fn check_body(&mut self)

fn local_has_storage_dead(&mut self, local: Local) -> bool

pub fn qualifs_in_return_place(&mut self) -> ConstQualifs

pub fn check_op(&mut self, op: impl NonConstOp)

Emits an error if an expression cannot be evaluated in the current context.

pub fn check_op_spanned<O: NonConstOp>(&mut self, op: O, span: Span)

Emits an error at the given span if an expression cannot be evaluated in the current context.

fn check_static(&mut self, def_id: DefId, span: Span)

fn check_local_or_return_ty(&mut self, ty: Ty<'tcx>, local: Local)

fn check_item_predicates(&mut self)

fn check_mut_borrow(&mut self, local: Local, kind: BorrowKind)

Methods from Deref<Target = ConstCx<'mir, 'tcx>>

pub fn def_id(&self) -> LocalDefId

pub fn const_kind(&self) -> ConstContext

Returns the kind of const context this Item represents (const, static, etc.).

Panics if this Item is not const.

pub fn is_const_stable_const_fn(&self) -> bool

pub fn fn_sig(&self) -> Option<&'tcx FnSig<'tcx>>

Returns the function signature of the item being const-checked if it is a fn or const fn.

Trait Implementations

impl<'mir, 'tcx> Deref for Checker<'mir, 'tcx>

type Target = ConstCx<'mir, 'tcx>

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl<'tcx, 'mir> Visitor<'tcx> for Checker<'mir, 'tcx>

fn visit_basic_block_data(
    &mut self,
    bb: BasicBlock,
    block: &BasicBlockData<'tcx>
)

fn visit_rvalue(&mut self, rvalue: &Rvalue<'tcx>, location: Location)

fn visit_operand(&mut self, op: &Operand<'tcx>, location: Location)

fn visit_projection_elem(
    &mut self,
    place_local: Local,
    proj_base: &[PlaceElem<'tcx>],
    elem: PlaceElem<'tcx>,
    context: PlaceContext,
    location: Location
)

fn visit_source_info(&mut self, source_info: &SourceInfo)

fn visit_statement(&mut self, statement: &Statement<'tcx>, location: Location)

fn visit_terminator(
    &mut self,
    terminator: &Terminator<'tcx>,
    location: Location
)

fn visit_body(&mut self, body: &Body<'tcx>)

fn visit_source_scope_data(&mut self, scope_data: &SourceScopeData<'tcx>)

fn visit_assign(
    &mut self,
    place: &Place<'tcx>,
    rvalue: &Rvalue<'tcx>,
    location: Location
)

fn visit_assert_message(
    &mut self,
    msg: &AssertKind<Operand<'tcx>>,
    location: Location
)

fn visit_ascribe_user_ty(
    &mut self,
    place: &Place<'tcx>,
    variance: &Variance,
    user_ty: &UserTypeProjection,
    location: Location
)

fn visit_coverage(&mut self, coverage: &Coverage, location: Location)

fn visit_retag(
    &mut self,
    kind: &RetagKind,
    place: &Place<'tcx>,
    location: Location
)

fn visit_place(
    &mut self,
    place: &Place<'tcx>,
    context: PlaceContext,
    location: Location
)

fn visit_projection(
    &mut self,
    place_ref: PlaceRef<'tcx>,
    context: PlaceContext,
    location: Location
)

fn super_place(
    &mut self,
    place: &Place<'tcx>,
    context: PlaceContext,
    location: Location
)

fn super_projection(
    &mut self,
    place_ref: PlaceRef<'tcx>,
    context: PlaceContext,
    location: Location
)

fn super_projection_elem(
    &mut self,
    _local: Local,
    _proj_base: &[ProjectionElem<Local, &'tcx TyS<'tcx>>],
    elem: ProjectionElem<Local, &'tcx TyS<'tcx>>,
    _context: PlaceContext,
    location: Location
)

fn visit_constant(&mut self, constant: &Constant<'tcx>, location: Location)

fn visit_span(&mut self, span: &Span)

fn visit_ty(&mut self, ty: &'tcx TyS<'tcx>, TyContext)

fn visit_user_type_projection(&mut self, ty: &UserTypeProjection)

fn visit_user_type_annotation(
    &mut self,
    index: UserTypeAnnotationIndex,
    ty: &CanonicalUserTypeAnnotation<'tcx>
)

fn visit_region(&mut self, region: &&'tcx RegionKind, Location)

fn visit_const(&mut self, constant: &&'tcx Const<'tcx>, Location)

fn visit_substs(&mut self, substs: &&'tcx List<GenericArg<'tcx>>, Location)

fn visit_local_decl(&mut self, local: Local, local_decl: &LocalDecl<'tcx>)

fn visit_var_debug_info(&mut self, var_debug_info: &VarDebugInfo<'tcx>)

fn visit_local(
    &mut self,
    _local: &Local,
    _context: PlaceContext,
    _location: Location
)

fn visit_source_scope(&mut self, scope: &SourceScope)

fn super_body(&mut self, body: &Body<'tcx>)

fn super_basic_block_data(
    &mut self,
    block: BasicBlock,
    data: &BasicBlockData<'tcx>
)

fn super_source_scope_data(&mut self, scope_data: &SourceScopeData<'tcx>)

fn super_statement(&mut self, statement: &Statement<'tcx>, location: Location)

fn super_assign(
    &mut self,
    place: &Place<'tcx>,
    rvalue: &Rvalue<'tcx>,
    location: Location
)

fn super_terminator(
    &mut self,
    terminator: &Terminator<'tcx>,
    location: Location
)

fn super_assert_message(
    &mut self,
    msg: &AssertKind<Operand<'tcx>>,
    location: Location
)

fn super_rvalue(&mut self, rvalue: &Rvalue<'tcx>, location: Location)

fn super_operand(&mut self, operand: &Operand<'tcx>, location: Location)

fn super_ascribe_user_ty(
    &mut self,
    place: &Place<'tcx>,
    _variance: &Variance,
    user_ty: &UserTypeProjection,
    location: Location
)

fn super_coverage(&mut self, _coverage: &Coverage, _location: Location)

fn super_retag(
    &mut self,
    _kind: &RetagKind,
    place: &Place<'tcx>,
    location: Location
)

fn super_local_decl(&mut self, local: Local, local_decl: &LocalDecl<'tcx>)

fn super_var_debug_info(&mut self, var_debug_info: &VarDebugInfo<'tcx>)

fn super_source_scope(&mut self, _scope: &SourceScope)

fn super_constant(&mut self, constant: &Constant<'tcx>, location: Location)

fn super_span(&mut self, _span: &Span)

fn super_source_info(&mut self, source_info: &SourceInfo)

fn super_user_type_projection(&mut self, _ty: &UserTypeProjection)

fn super_user_type_annotation(
    &mut self,
    _index: UserTypeAnnotationIndex,
    ty: &CanonicalUserTypeAnnotation<'tcx>
)

fn super_ty(&mut self, _ty: &'tcx TyS<'tcx>)

fn super_region(&mut self, _region: &&'tcx RegionKind)

fn super_const(&mut self, _const: &&'tcx Const<'tcx>)

fn super_substs(&mut self, _substs: &&'tcx List<GenericArg<'tcx>>)

fn visit_location(&mut self, body: &Body<'tcx>, location: Location)

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference’s “Type Layout” chapter for details on type layout guarantees.

Size: 520 bytes