Struct rustc_hir::Body

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pub struct Body<'hir> {
    pub params: &'hir [Param<'hir>],
    pub value: &'hir Expr<'hir>,
    pub generator_kind: Option<GeneratorKind>,
}
Expand description

The body of a function, closure, or constant value. In the case of a function, the body contains not only the function body itself (which is an expression), but also the argument patterns, since those are something that the caller doesn’t really care about.

Examples

fn foo((x, y): (u32, u32)) -> u32 {
    x + y
}

Here, the Body associated with foo() would contain:

  • an params array containing the (x, y) pattern
  • a value containing the x + y expression (maybe wrapped in a block)
  • generator_kind would be None

All bodies have an owner, which can be accessed via the HIR map using body_owner_def_id().

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§params: &'hir [Param<'hir>]§value: &'hir Expr<'hir>§generator_kind: Option<GeneratorKind>

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impl<'hir> Body<'hir>

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pub fn id(&self) -> BodyId

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pub fn generator_kind(&self) -> Option<GeneratorKind>

Trait Implementations§

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impl<'hir> Clone for Body<'hir>

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

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impl<'hir> RefUnwindSafe for Body<'hir>

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

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

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impl<'hir> Unpin for Body<'hir>

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impl<'hir> UnwindSafe for Body<'hir>

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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: 32 bytes