Struct rustc::middle::mem_categorization::MemCategorizationContext[][src]

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>,
    rvalue_promotable_map: Option<Lrc<ItemLocalSet>>,
    infcx: Option<&'a InferCtxt<'a, 'gcx, 'tcx>>,
}
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Fields

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🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

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Methods

impl<'a, 'tcx> MemCategorizationContext<'a, 'tcx, 'tcx>
[src]

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impl<'a, 'gcx, 'tcx> MemCategorizationContext<'a, 'gcx, 'tcx>
[src]

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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.

🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 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?

🔬 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?

🔬 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?

🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

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Returns the type of value that this pattern matches against. Some non-obvious cases:

  • a ref x binding matches against a value of type T and gives x the type &T; we return T.
  • a pattern with implicit derefs (thanks to default binding modes #42640) may look like Some(x) but in fact have implicit deref patterns attached (e.g., it is really &Some(x)). In that case, we return the "outermost" type (e.g., `&Option).

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Like pat_ty, but ignores implicit & patterns.

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🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

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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.

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🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

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Creates a cmt for an indexing operation ([]).

One subtle aspect of indexing that may not be immediately obvious: for anything other than a fixed-length vector, an operation like x[y] actually consists of two disjoint (from the point of view of borrowck) operations. The first is a deref of x to create a pointer p that points at the first element in the array. The second operation is an index which adds y*sizeof(T) to p to obtain the pointer to x[y]. cat_index will produce a resulting cmt containing both this deref and the indexing, presuming that base_cmt is not of fixed-length type.

Parameters

  • elt: the HIR node being indexed
  • base_cmt: the cmt of elt

🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

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Trait Implementations

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

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

Auto Trait Implementations

impl<'a, 'gcx, 'tcx> !Send for MemCategorizationContext<'a, 'gcx, 'tcx>

impl<'a, 'gcx, 'tcx> !Sync for MemCategorizationContext<'a, 'gcx, 'tcx>