[][src]Enum rustc::mir::ProjectionElem

pub enum ProjectionElem<'tcx, V, T> {
    Deref,
    Field(Field, T),
    Index(V),
    ConstantIndex {
        offset: u32,
        min_length: u32,
        from_end: bool,
    },
    Subslice {
        from: u32,
        to: u32,
    },
    Downcast(&'tcx AdtDefusize),
}
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Variants

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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?

These indices are generated by slice patterns. Easiest to explain by example:

[X, _, .._, _, _] => { offset: 0, min_length: 4, from_end: false },
[_, X, .._, _, _] => { offset: 1, min_length: 4, from_end: false },
[_, _, .._, X, _] => { offset: 2, min_length: 4, from_end: true },
[_, _, .._, _, X] => { offset: 1, min_length: 4, from_end: true },

Fields of ConstantIndex

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index or -index (in Python terms), depending on from_end

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thing being indexed must be at least this long

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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?

counting backwards from end?

🔬 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?

These indices are generated by slice patterns.

slice[from:-to] in Python terms.

Fields of Subslice

🔬 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?

"Downcast" to a variant of an ADT. Currently, we only introduce this for ADTs with more than one variant. It may be better to just introduce it always, or always for enums.

Trait Implementations

impl<'a, 'gcx, V, T> HashStable<StableHashingContext<'a>> for ProjectionElem<'gcx, V, T> where
    V: HashStable<StableHashingContext<'a>>,
    T: HashStable<StableHashingContext<'a>>, 
[src]

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impl<'tcx, V: Clone, T: Clone> Clone for ProjectionElem<'tcx, V, T>
[src]

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

impl<'tcx, V: Debug, T: Debug> Debug for ProjectionElem<'tcx, V, T>
[src]

Formats the value using the given formatter. Read more

impl<'tcx, V: PartialEq, T: PartialEq> PartialEq for ProjectionElem<'tcx, V, T>
[src]

This method tests for self and other values to be equal, and is used by ==. Read more

This method tests for !=.

impl<'tcx, V: Eq, T: Eq> Eq for ProjectionElem<'tcx, V, T>
[src]

impl<'tcx, V: Hash, T: Hash> Hash for ProjectionElem<'tcx, V, T>
[src]

Feeds this value into the given [Hasher]. Read more

Feeds a slice of this type into the given [Hasher]. Read more

impl<'tcx, V: Encodable, T: Encodable> Encodable for ProjectionElem<'tcx, V, T>
[src]

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impl<'tcx, V: Decodable, T: Decodable> Decodable for ProjectionElem<'tcx, V, T>
[src]

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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<'tcx, V, T> !Send for ProjectionElem<'tcx, V, T>

impl<'tcx, V, T> !Sync for ProjectionElem<'tcx, V, T>

Blanket Implementations

impl<T> MaybeResult for T
[src]

🔬 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?

impl<'a, T> Captures for T where
    T: ?Sized
[src]

impl<T> ToOwned for T where
    T: Clone
[src]

Creates owned data from borrowed data, usually by cloning. Read more

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

recently added

Uses borrowed data to replace owned data, usually by cloning. Read more

impl<T> From for T
[src]

Performs the conversion.

impl<T, U> Into for T where
    U: From<T>, 
[src]

Performs the conversion.

impl<T, U> TryFrom for T where
    T: From<U>, 
[src]

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

The type returned in the event of a conversion error.

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

Performs the conversion.

impl<T> Borrow for T where
    T: ?Sized
[src]

Important traits for &'a mut R

Immutably borrows from an owned value. Read more

impl<T, U> TryInto for T where
    U: TryFrom<T>, 
[src]

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

The type returned in the event of a conversion error.

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

Performs the conversion.

impl<T> BorrowMut for T where
    T: ?Sized
[src]

Important traits for &'a mut R

Mutably borrows from an owned value. Read more

impl<T> Any for T where
    T: 'static + ?Sized
[src]

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

this method will likely be replaced by an associated static

Gets the TypeId of self. Read more

impl<T> Encodable for T where
    T: UseSpecializedEncodable + ?Sized
[src]

🔬 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?

impl<T> Decodable for T where
    T: UseSpecializedDecodable
[src]

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impl<E> SpecializationError for E
[src]

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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?

Create an error for a missing method specialization. Defaults to panicking with type, trait & method names. S is the encoder/decoder state type, T is the type being encoded/decoded, and the arguments are the names of the trait and method that should've been overridden. Read more

impl<T> Erased for T
[src]

impl<T> Send for T where
    T: ?Sized
[src]

impl<T> Sync for T where
    T: ?Sized
[src]

impl<T> Erased for T