Struct rustc_hir::hir::GenericArgs

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pub struct GenericArgs<'hir> {
    pub args: &'hir [GenericArg<'hir>],
    pub bindings: &'hir [TypeBinding<'hir>],
    pub parenthesized: GenericArgsParentheses,
    pub span_ext: Span,
}

Fields§

§args: &'hir [GenericArg<'hir>]

The generic arguments for this path segment.

§bindings: &'hir [TypeBinding<'hir>]

Bindings (equality constraints) on associated types, if present. E.g., Foo<A = Bar>.

§parenthesized: GenericArgsParentheses

Were arguments written in parenthesized form Fn(T) -> U? This is required mostly for pretty-printing and diagnostics, but also for changing lifetime elision rules to be “function-like”.

§span_ext: Span

The span encompassing arguments and the surrounding brackets <> or () Foo<A, B, AssocTy = D> Fn(T, U, V) -> W ^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^ Note that this may be:

  • empty, if there are no generic brackets (but there may be hidden lifetimes)
  • dummy, if this was generated while desugaring

Implementations§

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impl<'hir> GenericArgs<'hir>

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pub const fn none() -> Self

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pub fn inputs(&self) -> &[Ty<'hir>]

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pub fn has_type_params(&self) -> bool

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pub fn has_err(&self) -> bool

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pub fn num_type_params(&self) -> usize

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pub fn num_lifetime_params(&self) -> usize

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pub fn has_lifetime_params(&self) -> bool

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pub fn num_generic_params(&self) -> usize

This function returns the number of type and const generic params. It should only be used for diagnostics.

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pub fn span(&self) -> Option<Span>

The span encompassing the text inside the surrounding brackets. It will also include bindings if they aren’t in the form -> Ret Returns None if the span is empty (e.g. no brackets) or dummy

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pub fn span_ext(&self) -> Option<Span>

Returns span encompassing arguments and their surrounding <> or ()

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pub fn is_empty(&self) -> bool

Trait Implementations§

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impl<'hir> Clone for GenericArgs<'hir>

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fn clone(&self) -> GenericArgs<'hir>

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<'hir> Debug for GenericArgs<'hir>

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl<'hir, __CTX> HashStable<__CTX> for GenericArgs<'hir>where __CTX: HashStableContext,

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fn hash_stable(&self, __hcx: &mut __CTX, __hasher: &mut StableHasher)

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impl<'hir> Copy for GenericArgs<'hir>

Auto Trait Implementations§

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impl<'hir> RefUnwindSafe for GenericArgs<'hir>

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impl<'hir> !Send for GenericArgs<'hir>

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impl<'hir> !Sync for GenericArgs<'hir>

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impl<'hir> Unpin for GenericArgs<'hir>

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impl<'hir> UnwindSafe for GenericArgs<'hir>

Blanket Implementations§

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impl<T> Any for Twhere T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for Twhere T: Copy,

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fn allocate_on<'a>(self, arena: &'a Arena<'tcx>) -> &'a mut T

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fn allocate_from_iter<'a>( arena: &'a Arena<'tcx>, iter: impl IntoIterator<Item = T> ) -> &'a mut [T]

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impl<T> Borrow<T> for Twhere T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for Twhere T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for Twhere U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for Twhere T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for Twhere U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

Layout§

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference’s “Type Layout” chapter for details on type layout guarantees.

Size:48 bytes