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EventPath

Struct EventPath 

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pub struct EventPath { /* private fields */ }
Expand description

What: One path as events report it. The fields are private, so the only ways to build one are the two constructors, and exact is present exactly when the bytes were not UTF-8. #[derive(...)] generates cloning, debug printing and ==. Why: A reader must be able to rely on “no pathBytes means path is the exact name”.

In TS you’d write (pseudocode):

type EventPath = { readonly text: string; readonly exact?: Uint8Array };

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impl EventPath

What: impl EventPath { ... } attaches the constructors and the two reads. Why: The invariant between the two fields is kept in one place.

In TS you’d write (pseudocode):

class EventPath { static fromGitBytes(bytes) {} static display(text) {} }
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pub fn from_git_bytes(bytes: &[u8]) -> EventPath

What: The event form of a pathname exactly as Git printed it. &[u8] borrows the bytes; String::from_utf8_lossy replaces each invalid sequence by U+FFFD. Why: A UTF-8 name is its own exact form and gets no extra field; any other name keeps its bytes, because different names can share one replaced text.

In TS you’d write (pseudocode):

static fromGitBytes(bytes: Uint8Array): EventPath;
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pub fn display(text: &str) -> EventPath

What: A path whose event form is text only. &str borrows the text. Why: A constant name, or the scanner’s masked display of a name, is already text; the masked display must never carry the bytes it masks.

In TS you’d write (pseudocode):

static display(text: string): EventPath;
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pub fn text(&self) -> &str

What: The readable text of the path. &str borrows it from the record. Why: Every event prints it as path, whatever else it prints.

In TS you’d write (pseudocode):

get text(): string;
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pub fn exact(&self) -> Option<&[u8]>

What: The exact bytes, only when they are not UTF-8. Option<&[u8]> lends them or says there are none. Why: Rendering adds pathBytes exactly when this is present.

In TS you’d write (pseudocode):

get exact(): Uint8Array | undefined;
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pub fn bytes(&self) -> &[u8] ⓘ

What: The bytes of the name: the exact ones when kept, else the text’s UTF-8 bytes. Why: A list of paths that holds one name that is not UTF-8 lists the bytes of every name, so its entries line up with the readable list one for one.

In TS you’d write (pseudocode):

get bytes(): Uint8Array { return this.exact ?? new TextEncoder().encode(this.text); }

Trait Implementations§

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impl Clone for EventPath

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fn clone(&self) -> Self

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl Debug for EventPath

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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 Eq for EventPath

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impl PartialEq for EventPath

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fn eq(&self, other: &Self) -> bool

Equality operator ==. Read more
1.0.0 (const: unstable) · Source§

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=. Read more
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impl StructuralPartialEq for EventPath

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

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Gets the TypeId of self. Read more
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where 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 T
where 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> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<Q, K> Equivalent<K> for Q
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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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fn from(t: T) -> T

Returns the argument unchanged.

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Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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where F: FnOnce(&Self) -> bool,

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type Init = T

The type for initializers.
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Dereferences the given pointer. Read more
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Mutably dereferences the given pointer. Read more
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Drops the object pointed to by the given pointer. Read more
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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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Performs the conversion.
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