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Locator

Struct Locator 

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

A Locator encodes a path to a nested field as a sequence of 4-byte packed values (sfield codes or array indices) in a compact binary format understood by the host.

§Derived Traits

  • Debug: Useful for development and debugging
  • Clone: Reasonable for this 72-byte struct when explicit copying is needed
  • Eq, PartialEq: Enable comparisons between locators

Note: Copy is intentionally not derived due to the struct’s size (72 bytes). Large Copy types can lead to accidental expensive copies and poor performance. Use .clone() when you need to duplicate a locator.

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impl Locator

pub fn new() -> Locator

Create a new empty Locator.

pub fn pack(&mut self, sfield_or_index: impl Into<i32>) -> bool

pub fn as_ptr(&self) -> *const u8

pub fn num_packed_bytes(&self) -> usize

pub fn len(&self) -> usize

pub fn is_empty(&self) -> bool

pub fn repack_last(&mut self, sfield_or_index: impl Into<i32>) -> bool

Trait Implementations§

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impl Clone for Locator

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fn clone(&self) -> Locator

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 Locator

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
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impl Default for Locator

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fn default() -> Locator

Returns the “default value” for a type. Read more
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impl Eq for Locator

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impl PartialEq for Locator

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

Tests for self and other values to be equal, and is used by ==.
1.0.0 (const: unstable) · Source§

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl StructuralPartialEq for Locator

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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,

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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<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,

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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, U> TryFrom<U> for T
where 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 T
where 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.