[][src]Struct rustc::ty::AdtDef

pub struct AdtDef {
    pub did: DefId,
    pub variants: Vec<VariantDef>,
    flags: AdtFlags,
    pub repr: ReprOptions,
}
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The definition of an abstract data type - a struct or enum.

These are all interned (by intern_adt_def) into the adt_defs table.

Fields

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Methods

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

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Calculate the forest of DefIds from which this adt is visibly uninhabited.

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

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Returns the kind of the ADT - Struct or Enum.

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Returns whether this type is #[fundamental] for the purposes of coherence checking.

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Returns true if this is PhantomData.

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Returns true if this is Box.

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Returns whether this type has a destructor.

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Asserts this is a struct or union and returns its unique variant.

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Returns an iterator over all fields contained by this ADT.

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Compute the discriminant value used by a specific variant. Unlike discriminants, this is (amortized) constant-time, only doing at most one query for evaluating an explicit discriminant (the last one before the requested variant), assuming there are no constant-evaluation errors there.

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Yields a DefId for the discriminant and an offset to add to it Alternatively, if there is no explicit discriminant, returns the inferred discriminant directly

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Important traits for &'a [u8]

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Returns a list of types such that Self: Sized if and only if that type is Sized, or TyErr if this type is recursive.

Oddly enough, checking that the sized-constraint is Sized is actually more expressive than checking all members: the Sized trait is inductive, so an associated type that references Self would prevent its containing ADT from being Sized.

Due to normalization being eager, this applies even if the associated type is behind a pointer, e.g. issue #31299.

Important traits for Vec<u8>

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Trait Implementations

impl<'a, 'tcx, 'x> SpecializedDecoder<&'tcx AdtDef> for CacheDecoder<'a, 'tcx, 'x>
[src]

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Decode a value in a manner specific to this decoder state.

impl<'tcx> TypeFoldable<'tcx> for &'tcx AdtDef
[src]

AdtDefs are basically the same as a DefId.

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True if self has any late-bound regions that are either bound by binder or bound by some binder outside of binder. If binder is ty::INNERMOST, this indicates whether there are any late-bound regions that appear free. Read more

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True if this self has any regions that escape binder (and hence are not bound by it). Read more

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"Free" regions in this context means that it has any region that is not (a) erased or (b) late-bound. Read more

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True if there any any un-erased free regions.

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Indicates whether this value references only 'global' types/lifetimes that are the same regardless of what fn we are in. This is used for caching. Read more

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True if there are any late-bound regions

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A visitor that does not recurse into types, works like fn walk_shallow in Ty.

impl PartialOrd for AdtDef
[src]

This method returns an ordering between self and other values if one exists. Read more

This method tests less than (for self and other) and is used by the < operator. Read more

This method tests less than or equal to (for self and other) and is used by the <= operator. Read more

This method tests greater than (for self and other) and is used by the > operator. Read more

This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more

impl Ord for AdtDef
[src]

There should be only one AdtDef for each did, therefore it is fine to implement Ord only based on did.

This method returns an Ordering between self and other. Read more

Compares and returns the maximum of two values. Read more

Compares and returns the minimum of two values. Read more

impl PartialEq for AdtDef
[src]

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

This method tests for !=.

impl Eq for AdtDef
[src]

impl Hash for AdtDef
[src]

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

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

impl<'tcx> UseSpecializedEncodable for &'tcx AdtDef
[src]

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Defaults to returning an error (see SpecializationError).

impl<'tcx> UseSpecializedDecodable for &'tcx AdtDef
[src]

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Defaults to returning an error (see SpecializationError).

impl<'a> HashStable<StableHashingContext<'a>> for AdtDef
[src]

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impl Debug for AdtDef
[src]

Formats the value using the given formatter. Read more

Auto Trait Implementations

impl !Send for AdtDef

impl !Sync for AdtDef

Blanket Implementations

impl<T> MaybeResult for T
[src]

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

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]

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The type returned in the event of a conversion error.

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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>, 
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The type returned in the event of a conversion error.

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Performs the conversion.

impl<T> BorrowMut for T where
    T: ?Sized
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Important traits for &'a mut R

Mutably borrows from an owned value. Read more

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

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this method will likely be replaced by an associated static

Gets the TypeId of self. Read more

impl<E> SpecializationError for E
[src]

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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
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impl<T> Send for T where
    T: ?Sized
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impl<T> Sync for T where
    T: ?Sized
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impl<T> Erased for T