Struct rustc_ast::ast::Param

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pub struct Param {
    pub attrs: AttrVec,
    pub ty: P<Ty>,
    pub pat: P<Pat>,
    pub id: NodeId,
    pub span: Span,
    pub is_placeholder: bool,
}
Expand description

A parameter in a function header.

E.g., bar: usize as in fn foo(bar: usize).

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§attrs: AttrVec§ty: P<Ty>§pat: P<Pat>§id: NodeId§span: Span§is_placeholder: bool

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impl Param

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pub fn to_self(&self) -> Option<ExplicitSelf>

Attempts to cast parameter to ExplicitSelf.

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pub fn is_self(&self) -> bool

Returns true if parameter is self.

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pub fn from_self( attrs: AttrVec, eself: ExplicitSelf, eself_ident: Ident ) -> Param

Builds a Param object from ExplicitSelf.

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impl Clone for Param

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fn clone(&self) -> Param

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 Debug for Param

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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<__D: Decoder> Decodable<__D> for Param

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fn decode(__decoder: &mut __D) -> Self

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impl<__E: Encoder> Encodable<__E> for Param

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fn encode(&self, __encoder: &mut __E)

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impl HasAttrs for Param

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const SUPPORTS_CUSTOM_INNER_ATTRS: bool = false

This is true if this HasAttrs might support ‘custom’ (proc-macro) inner attributes. Attributes like #![cfg] and #![cfg_attr] are not considered ‘custom’ attributes. Read more
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fn attrs(&self) -> &[Attribute]

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fn visit_attrs(&mut self, f: impl FnOnce(&mut AttrVec))

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impl HasNodeId for Param

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fn node_id(&self) -> NodeId

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fn node_id_mut(&mut self) -> &mut NodeId

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impl HasTokens for Param

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impl !RefUnwindSafe for Param

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impl !Send for Param

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impl !Sync for Param

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impl Unpin for Param

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impl !UnwindSafe for Param

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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<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: 40 bytes