Struct SourceFileDiffs

source

pub struct SourceFileDiffs {
    pub(crate) bytes_per_diff: usize,
    pub(crate) num_diffs: usize,
    pub(crate) raw_diffs: Vec<u8>,
}

Expand description

The source file lines in difference list form. This matches the form used within metadata, which saves space by exploiting the fact that the lines list is sorted and individual lines are usually not that long.

We read it directly from metadata and only decode it into Lines form when necessary. This is a significant performance win, especially for small crates where very little of std’s metadata is used.

Fields§

§bytes_per_diff: usize

Always 1, 2, or 4. Always as small as possible, while being big enough to hold the length of the longest line in the source file. The 1 case is by far the most common.

§num_diffs: usize

The number of diffs encoded in raw_diffs. Always one less than the number of lines in the source file.

§raw_diffs: Vec<u8>

The diffs in “raw” form. Each segment of bytes_per_diff length encodes one little-endian diff. Note that they aren’t LEB128 encoded. This makes for much faster decoding. Besides, the bytes_per_diff==1 case is by far the most common, and LEB128 encoding has no effect on that case.

Struct SourceFileDiffsCopy item path

Fields§

Trait Implementations§

impl Clone for SourceFileDiffs

fn clone(&self) -> SourceFileDiffs

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

Auto Trait Implementations§

impl DynSend for SourceFileDiffs

impl DynSync for SourceFileDiffs

impl Freeze for SourceFileDiffs

impl RefUnwindSafe for SourceFileDiffs

impl Send for SourceFileDiffs

impl Sync for SourceFileDiffs

impl Unpin for SourceFileDiffs

impl UnwindSafe for SourceFileDiffs

Blanket Implementations§

impl<T> Aligned for T

const ALIGN: Alignment = _

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> CloneToUninit for Twhere T: Clone,

unsafe fn clone_to_uninit(&self, dst: *mut T)

impl<T> From<T> for T

fn from(t: T) -> T

impl<T> Instrument for T

fn instrument(self, span: Span) -> Instrumented<Self>

fn in_current_span(self) -> Instrumented<Self>

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

fn into(self) -> U

impl<T> IntoEither for T

fn into_either(self, into_left: bool) -> Either<Self, Self>

fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>where F: FnOnce(&Self) -> bool,

impl<T> Pointable for T

const ALIGN: usize = _

type Init = T

unsafe fn init(init: <T as Pointable>::Init) -> usize

unsafe fn deref<'a>(ptr: usize) -> &'a T

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

unsafe fn drop(ptr: usize)

impl<T> Same for T

type Output = T

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>

impl<T> WithSubscriber for T

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>where S: Into<Dispatch>,

fn with_current_subscriber(self) -> WithDispatch<Self>

impl<'a, T> Captures<'a> for Twhere T: ?Sized,

Layout§

Struct SourceFileDiffs

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

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

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

impl<T> CloneToUninit for T
where T: Clone,

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

fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

impl<T> ToOwned for T
where T: Clone,

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

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

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

impl<'a, T> Captures<'a> for T
where T: ?Sized,