Enum rustc_ast::ast::MacArgs

source · [−]

pub enum MacArgs {
    Empty,
    Delimited(DelimSpan, MacDelimiter, TokenStream),
    Eq(Span, MacArgsEq),
}

Expand description

Arguments passed to an attribute or a function-like macro.

Variants

`Empty`

No arguments - #[attr].

`Delimited(DelimSpan, MacDelimiter, TokenStream)`

Delimited arguments - #[attr()/[]/{}] or mac!()/[]/{}.

`Eq(Span, MacArgsEq)`

Tuple Fields

0: Span

Span of the = token.

1: MacArgsEq

The “value”.

Arguments of a key-value attribute - #[attr = "value"].

Implementations

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pub fn inner_tokens(&self) -> TokenStream

Tokens inside the delimiters or after =. Proc macros see these tokens, for example.

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pub fn need_semicolon(&self) -> bool

Whether a macro with these arguments needs a semicolon when used as a standalone item or statement.

Trait Implementations

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impl Clone for MacArgs

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fn clone(&self) -> MacArgs

Returns a copy of the value. Read more

1.0.0 · source

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more

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impl Debug for MacArgs

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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 MacArgs

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fn decode(decoder: &mut D) -> Self

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impl<E: Encoder> Encodable<E> for MacArgs

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fn encode(&self, encoder: &mut E)

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impl<CTX> HashStable<CTX> for MacArgswhere
CTX: HashStableContext,

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fn hash_stable(&self, ctx: &mut CTX, hasher: &mut StableHasher)

Auto Trait Implementations

impl !RefUnwindSafe for MacArgs

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

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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

const: unstable · source

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

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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

const: unstable · source

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,

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 for Twhere
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

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impl<T, U> TryInto for Twhere
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

fn try_into(self) -> Result<U, >::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: 64 bytes

Size for each variant:

Empty: 0 bytes
Delimited: 31 bytes
Eq: 63 bytes

Enum rustc_ast::ast::MacArgs

Variants

Empty

Delimited(DelimSpan, MacDelimiter, TokenStream)

Eq(Span, MacArgsEq)

Tuple Fields

Implementations

impl MacArgs

pub fn delim(&self) -> Option<Delimiter>

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

pub fn inner_tokens(&self) -> TokenStream

pub fn need_semicolon(&self) -> bool

Trait Implementations

impl Clone for MacArgs

fn clone(&self) -> MacArgs

fn clone_from(&mut self, source: &Self)

impl Debug for MacArgs

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

impl<__D: Decoder> Decodable<__D> for MacArgs

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

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

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

impl<CTX> HashStable<CTX> for MacArgswhere CTX: HashStableContext,

fn hash_stable(&self, ctx: &mut CTX, hasher: &mut StableHasher)

Auto Trait Implementations

impl !RefUnwindSafe for MacArgs

impl !Send for MacArgs

impl !Sync for MacArgs

impl Unpin for MacArgs

impl !UnwindSafe for MacArgs

Blanket Implementations

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

fn type_id(&self) -> TypeId

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

fn borrow(&self) -> &T

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

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

impl<T> From<T> for T

fn from(t: T) -> T

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

fn into(self) -> U

impl<T> ToOwned for Twhere T: Clone,

type Owned = T

fn to_owned(&self) -> T

fn clone_into(&self, target: &mut T)

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

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

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

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Layout

`Empty`

`Delimited(DelimSpan, MacDelimiter, TokenStream)`

`Eq(Span, MacArgsEq)`

impl<D: Decoder> Decodable<D> for MacArgs

fn decode(decoder: &mut D) -> Self

impl<E: Encoder> Encodable<E> for MacArgs

fn encode(&self, encoder: &mut E)

impl<CTX> HashStable<CTX> for MacArgswhere
CTX: HashStableContext,

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

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

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

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

impl<T> ToOwned for Twhere
T: Clone,

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

impl<T, U> TryInto<U> for Twhere
U: TryFrom<T>,