Struct PathSegment 

pub struct PathSegment {
    pub uses: Arc<str>,
    pub row: Option<usize>,
    pub repository: Option<Arc<str>>,
    pub spec: Arc<str>,
}

A single segment in a resolved path traversal

Used in both DataPath and RulePath for cross-spec traversal. Each segment is one spec instance of the consumer plan: a uses import (uses, row: None) or row row of the instance list uses written in the spec (row: Some(n), 1-based). repository is the resolved target repository name (None = unnamed workspace) and spec the resolved target spec name.

Fields

uses: Arc<str>

The uses alias, or the instance list name when row is set.

row: Option<usize>

Row number (1-based) of list uses when this hop is a row written in the spec.

repository: Option<Arc<str>>

Target repository name from Arc<LemmaRepository>.name at resolve. None is the unnamed workspace.

spec: Arc<str>

The spec this hop resolves to (resolved during planning)

Implementations

impl PathSegment

pub fn input_key(&self) -> String

Dotted input-key form of this hop: ada, or staff.2 for a row.

Trait Implementations

impl Clone for PathSegment

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 PathSegment

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

Formats the value using the given formatter.

impl Display for PathSegment

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

Formats the value using the given formatter.

impl Eq for PathSegment

impl From<&PathSegment> for PathSegment

fn from(segment: &DomainPathSegment) -> Self

Converts to this type from the input type.

impl Hash for PathSegment

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for PathSegment

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

🔬This is a nightly-only experimental API. (clamp_to)

Restrict a value to a certain range.

impl PartialEq for PathSegment

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for PathSegment

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for PathSegment