Struct rustc_passes::rvalue_promotion::CheckCrateVisitor [−][src]
struct CheckCrateVisitor<'a, 'tcx: 'a> { tcx: TyCtxt<'a, 'tcx, 'tcx>, in_fn: bool, in_static: bool, promotable: bool, mut_rvalue_borrows: NodeSet, param_env: ParamEnv<'tcx>, identity_substs: &'tcx Substs<'tcx>, tables: &'a TypeckTables<'tcx>, result: ItemLocalSet, }
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Fields
tcx: TyCtxt<'a, 'tcx, 'tcx>
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in_fn: bool
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in_static: bool
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promotable: bool
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mut_rvalue_borrows: NodeSet
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param_env: ParamEnv<'tcx>
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identity_substs: &'tcx Substs<'tcx>
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tables: &'a TypeckTables<'tcx>
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result: ItemLocalSet
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Methods
impl<'a, 'gcx> CheckCrateVisitor<'a, 'gcx>
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impl<'a, 'gcx> CheckCrateVisitor<'a, 'gcx>
fn type_has_only_promotable_values(&mut self, ty: Ty<'gcx>) -> bool
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fn type_has_only_promotable_values(&mut self, ty: Ty<'gcx>) -> bool
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fn handle_const_fn_call(&mut self, def_id: DefId, ret_ty: Ty<'gcx>, span: Span)
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fn handle_const_fn_call(&mut self, def_id: DefId, ret_ty: Ty<'gcx>, span: Span)
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fn remove_mut_rvalue_borrow(&mut self, pat: &Pat) -> bool
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fn remove_mut_rvalue_borrow(&mut self, pat: &Pat) -> bool
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While the ExprUseVisitor
walks, we will identify which
expressions are borrowed, and insert their ids into this
table. Actually, we insert the "borrow-id", which is normally
the id of the expession being borrowed: but in the case of
ref mut
borrows, the id
of the pattern is
inserted. Therefore later we remove that entry from the table
and transfer it over to the value being matched. This will
then prevent said value from being promoted.
Trait Implementations
impl<'a, 'tcx> Visitor<'tcx> for CheckCrateVisitor<'a, 'tcx>
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impl<'a, 'tcx> Visitor<'tcx> for CheckCrateVisitor<'a, 'tcx>
fn nested_visit_map<'this>(&'this mut self) -> NestedVisitorMap<'this, 'tcx>
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fn nested_visit_map<'this>(&'this mut self) -> NestedVisitorMap<'this, 'tcx>
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The default versions of the visit_nested_XXX
routines invoke this method to get a map to use. By selecting an enum variant, you control which kinds of nested HIR are visited; see NestedVisitorMap
for details. By "nested HIR", we are referring to bits of HIR that are not directly embedded within one another but rather indirectly, through a table in the crate. This is done to control dependencies during incremental compilation: the non-inline bits of HIR can be tracked and hashed separately. Read more
fn visit_nested_body(&mut self, body_id: BodyId)
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fn visit_nested_body(&mut self, body_id: BodyId)
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Invoked to visit the body of a function, method or closure. Like visit_nested_item, does nothing by default unless you override nested_visit_map
to return Some(_)
, in which case it will walk the body. Read more
fn visit_stmt(&mut self, stmt: &'tcx Stmt)
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fn visit_stmt(&mut self, stmt: &'tcx Stmt)
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fn visit_expr(&mut self, ex: &'tcx Expr)
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fn visit_expr(&mut self, ex: &'tcx Expr)
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fn visit_nested_item(&mut self, id: ItemId)
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fn visit_nested_item(&mut self, id: ItemId)
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Invoked when a nested item is encountered. By default does nothing unless you override nested_visit_map
to return Some(_)
, in which case it will walk the item. You probably don't want to override this method -- instead, override nested_visit_map
or use the "shallow" or "deep" visit patterns described on itemlikevisit::ItemLikeVisitor
. The only reason to override this method is if you want a nested pattern but cannot supply a Map
; see nested_visit_map
for advice. Read more
fn visit_nested_trait_item(&mut self, id: TraitItemId)
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fn visit_nested_trait_item(&mut self, id: TraitItemId)
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Like visit_nested_item()
, but for trait items. See visit_nested_item()
for advice on when to override this method. Read more
fn visit_nested_impl_item(&mut self, id: ImplItemId)
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fn visit_nested_impl_item(&mut self, id: ImplItemId)
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Like visit_nested_item()
, but for impl items. See visit_nested_item()
for advice on when to override this method. Read more
fn visit_item(&mut self, i: &'v Item)
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fn visit_item(&mut self, i: &'v Item)
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Visit the top-level item and (optionally) nested items / impl items. See visit_nested_item
for details. Read more
fn visit_body(&mut self, b: &'v Body)
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fn visit_body(&mut self, b: &'v Body)
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fn as_deep_visitor(&'s mut self) -> DeepVisitor<'s, Self>
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fn as_deep_visitor(&'s mut self) -> DeepVisitor<'s, Self>
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When invoking visit_all_item_likes()
, you need to supply an item-like visitor. This method converts a "intra-visit" visitor into an item-like visitor that walks the entire tree. If you use this, you probably don't want to process the contents of nested item-like things, since the outer loop will visit them as well. Read more
fn visit_id(&mut self, _node_id: NodeId)
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fn visit_id(&mut self, _node_id: NodeId)
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fn visit_def_mention(&mut self, _def: Def)
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fn visit_def_mention(&mut self, _def: Def)
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fn visit_name(&mut self, _span: Span, _name: Symbol)
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fn visit_name(&mut self, _span: Span, _name: Symbol)
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fn visit_ident(&mut self, ident: Ident)
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fn visit_ident(&mut self, ident: Ident)
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fn visit_mod(&mut self, m: &'v Mod, _s: Span, n: NodeId)
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fn visit_mod(&mut self, m: &'v Mod, _s: Span, n: NodeId)
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fn visit_foreign_item(&mut self, i: &'v ForeignItem)
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fn visit_foreign_item(&mut self, i: &'v ForeignItem)
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fn visit_local(&mut self, l: &'v Local)
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fn visit_local(&mut self, l: &'v Local)
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fn visit_block(&mut self, b: &'v Block)
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fn visit_block(&mut self, b: &'v Block)
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fn visit_arm(&mut self, a: &'v Arm)
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fn visit_arm(&mut self, a: &'v Arm)
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fn visit_pat(&mut self, p: &'v Pat)
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fn visit_pat(&mut self, p: &'v Pat)
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fn visit_decl(&mut self, d: &'v Spanned<Decl_>)
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fn visit_decl(&mut self, d: &'v Spanned<Decl_>)
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fn visit_anon_const(&mut self, c: &'v AnonConst)
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fn visit_anon_const(&mut self, c: &'v AnonConst)
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fn visit_ty(&mut self, t: &'v Ty)
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fn visit_ty(&mut self, t: &'v Ty)
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fn visit_generic_param(&mut self, p: &'v GenericParam)
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fn visit_generic_param(&mut self, p: &'v GenericParam)
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fn visit_generics(&mut self, g: &'v Generics)
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fn visit_generics(&mut self, g: &'v Generics)
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fn visit_where_predicate(&mut self, predicate: &'v WherePredicate)
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fn visit_where_predicate(&mut self, predicate: &'v WherePredicate)
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fn visit_fn_decl(&mut self, fd: &'v FnDecl)
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fn visit_fn_decl(&mut self, fd: &'v FnDecl)
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fn visit_fn(
&mut self,
fk: FnKind<'v>,
fd: &'v FnDecl,
b: BodyId,
s: Span,
id: NodeId
)
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fn visit_fn(
&mut self,
fk: FnKind<'v>,
fd: &'v FnDecl,
b: BodyId,
s: Span,
id: NodeId
)
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fn visit_trait_item(&mut self, ti: &'v TraitItem)
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fn visit_trait_item(&mut self, ti: &'v TraitItem)
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fn visit_trait_item_ref(&mut self, ii: &'v TraitItemRef)
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fn visit_trait_item_ref(&mut self, ii: &'v TraitItemRef)
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fn visit_impl_item(&mut self, ii: &'v ImplItem)
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fn visit_impl_item(&mut self, ii: &'v ImplItem)
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fn visit_impl_item_ref(&mut self, ii: &'v ImplItemRef)
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fn visit_impl_item_ref(&mut self, ii: &'v ImplItemRef)
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fn visit_trait_ref(&mut self, t: &'v TraitRef)
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fn visit_trait_ref(&mut self, t: &'v TraitRef)
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fn visit_ty_param_bound(&mut self, bounds: &'v TyParamBound)
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fn visit_ty_param_bound(&mut self, bounds: &'v TyParamBound)
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fn visit_poly_trait_ref(&mut self, t: &'v PolyTraitRef, m: TraitBoundModifier)
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fn visit_poly_trait_ref(&mut self, t: &'v PolyTraitRef, m: TraitBoundModifier)
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fn visit_variant_data(
&mut self,
s: &'v VariantData,
Symbol,
&'v Generics,
_parent_id: NodeId,
Span
)
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fn visit_variant_data(
&mut self,
s: &'v VariantData,
Symbol,
&'v Generics,
_parent_id: NodeId,
Span
)
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fn visit_struct_field(&mut self, s: &'v StructField)
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fn visit_struct_field(&mut self, s: &'v StructField)
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fn visit_enum_def(
&mut self,
enum_definition: &'v EnumDef,
generics: &'v Generics,
item_id: NodeId,
Span
)
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fn visit_enum_def(
&mut self,
enum_definition: &'v EnumDef,
generics: &'v Generics,
item_id: NodeId,
Span
)
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fn visit_variant(
&mut self,
v: &'v Spanned<Variant_>,
g: &'v Generics,
item_id: NodeId
)
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fn visit_variant(
&mut self,
v: &'v Spanned<Variant_>,
g: &'v Generics,
item_id: NodeId
)
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fn visit_label(&mut self, label: &'v Label)
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fn visit_label(&mut self, label: &'v Label)
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fn visit_lifetime(&mut self, lifetime: &'v Lifetime)
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fn visit_lifetime(&mut self, lifetime: &'v Lifetime)
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fn visit_qpath(&mut self, qpath: &'v QPath, id: NodeId, span: Span)
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fn visit_qpath(&mut self, qpath: &'v QPath, id: NodeId, span: Span)
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fn visit_path(&mut self, path: &'v Path, _id: NodeId)
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fn visit_path(&mut self, path: &'v Path, _id: NodeId)
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fn visit_path_segment(&mut self, path_span: Span, path_segment: &'v PathSegment)
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fn visit_path_segment(&mut self, path_span: Span, path_segment: &'v PathSegment)
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fn visit_path_parameters(
&mut self,
path_span: Span,
path_parameters: &'v PathParameters
)
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fn visit_path_parameters(
&mut self,
path_span: Span,
path_parameters: &'v PathParameters
)
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fn visit_assoc_type_binding(&mut self, type_binding: &'v TypeBinding)
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fn visit_assoc_type_binding(&mut self, type_binding: &'v TypeBinding)
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fn visit_attribute(&mut self, _attr: &'v Attribute)
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fn visit_attribute(&mut self, _attr: &'v Attribute)
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fn visit_macro_def(&mut self, macro_def: &'v MacroDef)
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fn visit_macro_def(&mut self, macro_def: &'v MacroDef)
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fn visit_vis(&mut self, vis: &'v Visibility)
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fn visit_vis(&mut self, vis: &'v Visibility)
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fn visit_associated_item_kind(&mut self, kind: &'v AssociatedItemKind)
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fn visit_associated_item_kind(&mut self, kind: &'v AssociatedItemKind)
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fn visit_defaultness(&mut self, defaultness: &'v Defaultness)
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fn visit_defaultness(&mut self, defaultness: &'v Defaultness)
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impl<'a, 'gcx, 'tcx> Delegate<'tcx> for CheckCrateVisitor<'a, 'gcx>
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impl<'a, 'gcx, 'tcx> Delegate<'tcx> for CheckCrateVisitor<'a, 'gcx>
fn consume(
&mut self,
_consume_id: NodeId,
_consume_span: Span,
_cmt: &cmt_,
_mode: ConsumeMode
)
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fn consume(
&mut self,
_consume_id: NodeId,
_consume_span: Span,
_cmt: &cmt_,
_mode: ConsumeMode
)
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fn borrow(
&mut self,
borrow_id: NodeId,
_borrow_span: Span,
cmt: &cmt_<'tcx>,
_loan_region: Region<'tcx>,
bk: BorrowKind,
loan_cause: LoanCause
)
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fn borrow(
&mut self,
borrow_id: NodeId,
_borrow_span: Span,
cmt: &cmt_<'tcx>,
_loan_region: Region<'tcx>,
bk: BorrowKind,
loan_cause: LoanCause
)
🔬 This is a nightly-only experimental API. (rustc_private
)
this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml
instead?
fn decl_without_init(&mut self, _id: NodeId, _span: Span)
[src]
fn decl_without_init(&mut self, _id: NodeId, _span: Span)
🔬 This is a nightly-only experimental API. (rustc_private
)
this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml
instead?
fn mutate(
&mut self,
_assignment_id: NodeId,
_assignment_span: Span,
_assignee_cmt: &cmt_,
_mode: MutateMode
)
[src]
fn mutate(
&mut self,
_assignment_id: NodeId,
_assignment_span: Span,
_assignee_cmt: &cmt_,
_mode: MutateMode
)
🔬 This is a nightly-only experimental API. (rustc_private
)
this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml
instead?
fn matched_pat(&mut self, _: &Pat, _: &cmt_, _: MatchMode)
[src]
fn matched_pat(&mut self, _: &Pat, _: &cmt_, _: MatchMode)
🔬 This is a nightly-only experimental API. (rustc_private
)
this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml
instead?
fn consume_pat(&mut self, _consume_pat: &Pat, _cmt: &cmt_, _mode: ConsumeMode)
[src]
fn consume_pat(&mut self, _consume_pat: &Pat, _cmt: &cmt_, _mode: ConsumeMode)
🔬 This is a nightly-only experimental API. (rustc_private
)
this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml
instead?
Auto Trait Implementations
impl<'a, 'tcx> !Send for CheckCrateVisitor<'a, 'tcx>
impl<'a, 'tcx> !Send for CheckCrateVisitor<'a, 'tcx>
impl<'a, 'tcx> !Sync for CheckCrateVisitor<'a, 'tcx>
impl<'a, 'tcx> !Sync for CheckCrateVisitor<'a, 'tcx>