# Struct proc_macro::Punct

1.29.0 · source ·

    pub struct Punct(/* private fields */);

Expand description

A `Punct` is a single punctuation character such as `+`, `-` or `#`.

Multi-character operators like `+=` are represented as two instances of `Punct` with different forms of `Spacing` returned.

## Implementations§

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### impl Punct

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#### pub fn new(ch: char, spacing: Spacing) -> Punct

Creates a new `Punct` from the given character and spacing. The `ch` argument must be a valid punctuation character permitted by the language, otherwise the function will panic.

The returned `Punct` will have the default span of `Span::call_site()` which can be further configured with the `set_span` method below.

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#### pub fn as_char(&self) -> char

Returns the value of this punctuation character as `char`.

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#### pub fn spacing(&self) -> Spacing

Returns the spacing of this punctuation character, indicating whether it can be potentially combined into a multi-character operator with the following token (`Joint`), or the operator has certainly ended (`Alone`).

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#### pub fn span(&self) -> Span

Returns the span for this punctuation character.

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#### pub fn set_span(&mut self, span: Span)

Configure the span for this punctuation character.

## Trait Implementations§

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### impl Clone for Punct

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#### fn clone(&self) -> Punct

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 Punct

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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 Display for Punct

Prints the punctuation character as a string that should be losslessly convertible back into the same character.

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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 From<Punct> for TokenTree

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#### fn from(g: Punct) -> TokenTree

Converts to this type from the input type.
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### impl PartialEq<Punct> for char

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#### fn eq(&self, rhs: &Punct) -> bool

This method tests for `self` and `other` values to be equal, and is used by `==`.
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#### fn ne(&self, other: &Rhs) -> bool

This method tests for `!=`. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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### impl PartialEq<char> for Punct

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#### fn eq(&self, rhs: &char) -> bool

This method tests for `self` and `other` values to be equal, and is used by `==`.
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#### fn ne(&self, other: &Rhs) -> bool

This method tests for `!=`. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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### impl !Send for Punct

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### impl !Sync for Punct

## Auto Trait Implementations§

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### impl RefUnwindSafe for Punct

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### impl Unpin for Punct

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### impl UnwindSafe for Punct

## 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,

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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> ToString for Twhere T: Display + ?Sized,

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#### default fn to_string(&self) -> String

Converts the given value to a `String`. 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.