Struct ChangeId 

pub struct ChangeId(/* private fields */);

Identifier for an input or nested-input target of a Change.

Wraps an AttrPath: a non-empty sequence of unquoted segments matching flake-side attribute path grammar.

Implementations

impl ChangeId

pub fn new(path: AttrPath) -> Self

pub fn parse(s: &str) -> Result<Self, AttrPathParseError>

Parse a dotted attribute path. Quoted segments (e.g. "hls-1.10") retain dots that would otherwise act as separators.

pub fn path(&self) -> &AttrPath

pub fn input(&self) -> &Segment

Top-level input segment: the segment before the first dot, or the whole path if it has only one segment.

pub fn follows(&self) -> Option<&Segment>

Second segment, if the path has more than one segment.

pub fn matches_with_follows( &self, input: &Segment, follows: Option<&Segment>, ) -> bool

Match against an explicit (input, follows) pair.

pub fn matches_with_ctx(&self, follows: &Segment, ctx: Option<Context>) -> bool

Match against the surrounding walker [Context], which carries the enclosing top-level input.

Trait Implementations

impl Clone for ChangeId

fn clone(&self) -> ChangeId

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ChangeId

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

Formats the value using the given formatter.

impl Display for ChangeId

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

Formats the value using the given formatter.

impl From<AttrPath> for ChangeId

fn from(value: AttrPath) -> Self

Converts to this type from the input type.

impl From<Segment> for ChangeId

fn from(value: Segment) -> Self

Converts to this type from the input type.

impl PartialEq for ChangeId

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl Serialize for ChangeId

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for ChangeId

impl TryFrom<&str> for ChangeId

type Error = AttrPathParseError

The type returned in the event of a conversion error.

fn try_from(value: &str) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<String> for ChangeId

type Error = AttrPathParseError

The type returned in the event of a conversion error.

fn try_from(value: String) -> Result<Self, Self::Error>

Performs the conversion.