Struct rustc::middle::mem_categorization::MemCategorizationContext

pub struct MemCategorizationContext<'a, 'gcx: 'a + 'tcx, 'tcx: 'a> {
    pub tcx: TyCtxt<'a, 'gcx, 'tcx>,
    pub region_scope_tree: &'a ScopeTree,
    pub tables: &'a TypeckTables<'tcx>,
    // some fields omitted
}

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Fields

tcx: TyCtxt<'a, 'gcx, 'tcx>

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region_scope_tree: &'a ScopeTree

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tables: &'a TypeckTables<'tcx>

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Methods

impl<'a, 'tcx> MemCategorizationContext<'a, 'tcx, 'tcx>

pub fn new(
    tcx: TyCtxt<'a, 'tcx, 'tcx>,
    region_scope_tree: &'a ScopeTree,
    tables: &'a TypeckTables<'tcx>,
    rvalue_promotable_map: Option<Rc<ItemLocalSet>>
) -> MemCategorizationContext<'a, 'tcx, 'tcx>

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impl<'a, 'gcx, 'tcx> MemCategorizationContext<'a, 'gcx, 'tcx>

pub fn with_infer(
    infcx: &'a InferCtxt<'a, 'gcx, 'tcx>,
    region_scope_tree: &'a ScopeTree,
    tables: &'a TypeckTables<'tcx>
) -> MemCategorizationContext<'a, 'gcx, 'tcx>

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Creates a MemCategorizationContext during type inference. This is used during upvar analysis and a few other places. Because the typeck tables are not yet complete, the results from the analysis must be used with caution:

• rvalue promotions are not known, so the lifetimes of temporaries may be overly conservative;
• similarly, as the results of upvar analysis are not yet known, the results around upvar accesses may be incorrect.

pub fn type_moves_by_default(
    &self,
    param_env: ParamEnv<'tcx>,
    ty: Ty<'tcx>,
    span: Span
) -> bool

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pub fn node_ty(&self, hir_id: HirId) -> McResult<Ty<'tcx>>

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pub fn expr_ty(&self, expr: &Expr) -> McResult<Ty<'tcx>>

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pub fn expr_ty_adjusted(&self, expr: &Expr) -> McResult<Ty<'tcx>>

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pub fn cat_expr(&self, expr: &Expr) -> McResult<cmt<'tcx>>

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pub fn cat_expr_adjusted(
    &self,
    expr: &Expr,
    previous: cmt<'tcx>,
    adjustment: &Adjustment<'tcx>
) -> McResult<cmt<'tcx>>

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pub fn cat_expr_unadjusted(&self, expr: &Expr) -> McResult<cmt<'tcx>>

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pub fn cat_def(
    &self,
    id: NodeId,
    span: Span,
    expr_ty: Ty<'tcx>,
    def: Def
) -> McResult<cmt<'tcx>>

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pub fn temporary_scope(&self, id: ItemLocalId) -> Region<'tcx>

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Returns the lifetime of a temporary created by expr with id id. This could be 'static if id is part of a constant expression.

pub fn cat_rvalue_node(
    &self,
    id: NodeId,
    span: Span,
    expr_ty: Ty<'tcx>
) -> cmt<'tcx>

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pub fn cat_rvalue(
    &self,
    cmt_id: NodeId,
    span: Span,
    temp_scope: Region<'tcx>,
    expr_ty: Ty<'tcx>
) -> cmt<'tcx>

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pub fn cat_field<N: ast_node>(
    &self,
    node: &N,
    base_cmt: cmt<'tcx>,
    f_name: Name,
    f_ty: Ty<'tcx>
) -> cmt<'tcx>

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pub fn cat_tup_field<N: ast_node>(
    &self,
    node: &N,
    base_cmt: cmt<'tcx>,
    f_idx: usize,
    f_ty: Ty<'tcx>
) -> cmt<'tcx>

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pub fn cat_deref<N: ast_node>(
    &self,
    node: &N,
    base_cmt: cmt<'tcx>,
    implicit: bool
) -> McResult<cmt<'tcx>>

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pub fn cat_imm_interior<N: ast_node>(
    &self,
    node: &N,
    base_cmt: cmt<'tcx>,
    interior_ty: Ty<'tcx>,
    interior: InteriorKind
) -> cmt<'tcx>

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pub fn cat_downcast_if_needed<N: ast_node>(
    &self,
    node: &N,
    base_cmt: cmt<'tcx>,
    variant_did: DefId
) -> cmt<'tcx>

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pub fn cat_pattern<F>(&self, cmt: cmt<'tcx>, pat: &Pat, op: F) -> McResult<()> where
    F: FnMut(cmt<'tcx>, &Pat), 

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Trait Implementations

impl<'a, 'gcx: 'a + 'tcx, 'tcx: 'a> Clone for MemCategorizationContext<'a, 'gcx, 'tcx>

fn clone(&self) -> MemCategorizationContext<'a, 'gcx, 'tcx>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.