# Struct proc_macro_error::SpanRange

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    pub struct SpanRange {
        pub first: Span,
        pub last: Span,
    }

## Fields

`first: Span` `last: Span`

## Implementations

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### impl SpanRange

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#### pub fn single_span(span: Span) -> Self

Create a range with the `first` and `last` spans being the same.

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#### pub fn call_site() -> Self

Create a `SpanRange` resolving at call site.

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#### pub fn from_tokens(ts: &dyn ToTokens) -> Self

Construct span range from a `TokenStream`. This method always preserves all the range.

###### Note

If the stream is empty, the result is `SpanRange::call_site()`. If the stream consists of only one `TokenTree`, the result is `SpanRange::single_span(tt.span())` that doesn’t lose anything.

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#### pub fn join_range(self, other: SpanRange) -> Self

Join two span ranges. The resulting range will start at `self.first` and end at `other.last`.

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#### pub fn collapse(self) -> Span

Collapse the range into single span, preserving as much information as possible.

## Trait Implementations

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### impl Clone for SpanRange

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

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 SpanRange

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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 Copy for SpanRange

## Auto Trait Implementations

### impl RefUnwindSafe for SpanRange

### impl !Send for SpanRange

### impl !Sync for SpanRange

### impl Unpin for SpanRange

### impl UnwindSafe for SpanRange

## Blanket Implementations

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### impl<T> Any for T where
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 T where
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 T where
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

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#### fn from(t: T) -> T

Returns the argument unchanged.

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### impl<T, U> Into<U> for T where
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 T where
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<U> for T where
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<U>>::Error>

Performs the conversion.

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### impl<T, U> TryInto<U> for T where
U: TryFrom<T>,

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

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.