# Enum cargo::sources::registry::index::MaybeIndexSummary

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    enum MaybeIndexSummary {
        Unparsed {
            start: usize,
            end: usize,
        },
        Parsed(IndexSummary),
    }

Expand description

A lazily parsed `IndexSummary`.

## Variants§

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### Unparsed

#### Fields

§`start: usize`
§`end: usize`

A summary which has not been parsed, The `start` and `end` are pointers into `Summaries::raw_data` which this is an entry of.

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### Parsed(IndexSummary)

An actually parsed summary.

## Implementations§

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### impl MaybeIndexSummary

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#### fn parse( &mut self, raw_data: &[u8], source_id: SourceId ) -> CargoResult<&IndexSummary>

Parses this “maybe a summary” into a `Parsed` for sure variant.

Does nothing if this is already `Parsed`, and otherwise the `raw_data` passed in is sliced with the bounds in `Unparsed` and then actually parsed.

## Trait Implementations§

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### impl From<IndexSummary> for MaybeIndexSummary

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#### fn from(summary: IndexSummary) -> MaybeIndexSummary

Converts to this type from the input type.

## Auto Trait Implementations§

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### impl RefUnwindSafe for MaybeIndexSummary

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### impl !Send for MaybeIndexSummary

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### impl !Sync for MaybeIndexSummary

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### impl Unpin for MaybeIndexSummary

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### impl UnwindSafe for MaybeIndexSummary

## 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> Same<T> for T

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#### type Output = T

Should always be `Self`
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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.
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### impl<V, T> VZip<V> for Twhere V: MultiLane<T>,

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#### fn vzip(self) -> V

## 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:24 bytes

Size for each variant:

- `Unparsed`: 16 bytes
- `Parsed`: 16 bytes