Struct Path 

pub struct Path { /* private fields */ }

A root plus typed segments, parsed once. A segment is a key on an object (one leading # stripped) and an index on an array (the raw segment parsed as usize, up to MAX_ARRAY_INDEX; a larger number is a key), resolved at parse.

Debug prints the dotted text, Path("metadata.errors").

Implementations

impl Path

pub fn root(&self) -> Root

The root the path starts at.

pub fn is_root(&self) -> bool

Does the path name a root itself, with nothing below it?

pub fn get<'v>(&self, context: &'v OwnedDataValue) -> Option<&'v OwnedDataValue>

The value at the path in context, an object holding the three roots.

pub fn set( &self, context: &mut OwnedDataValue, value: OwnedDataValue, ) -> Result<()>

Assigns value at the path. At a root it replaces the root and accepts only an object. A hop that cannot continue writes nothing and is Ok.

pub fn remove( &self, context: &mut OwnedDataValue, ) -> Result<Option<OwnedDataValue>>

Removes the value at the path and returns it. A root cannot be removed.

Trait Implementations

impl Clone for Path

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Path

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

The dotted text, Path("metadata.errors"): the segments are the text parsed, so they say nothing more.

impl Display for Path

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

Formats the value using the given formatter.

impl Eq for Path

impl FromStr for Path

type Err = Error

The associated error which can be returned from parsing.

fn from_str(dotted: &str) -> Result<Self>

Parses a string s to return a value of this type.

impl FromValue for Path

type Out<'a> = Cow<'a, Path>

What an evaluation hands back: a folded constant borrowed from the expression, a dynamic result owned.

impl PartialEq for Path

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Path