Struct Segment 

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

Implementations

impl Segment

pub fn from_unquoted(s: impl Into<String>) -> Result<Self, SegmentError>

Construct from already-unquoted text.

Rejects empty input, embedded ", and ASCII control characters. Everything else (., +, /, leading digits, hyphens, single quotes) is accepted. Self::render decides whether to wrap in "...".

pub fn from_source(s: &str) -> Result<Self, SegmentError>

Parse source-form text. Strips a single surrounding pair of "...", otherwise behaves like Self::from_unquoted.

pub fn from_syntax(node: &SyntaxNode) -> Result<Self, SegmentError>

Build a Segment from a CST node’s source text.

pub fn as_str(&self) -> &str

pub fn into_string(self) -> String

Consume the segment, returning the unquoted text.

pub fn needs_quoting(&self) -> bool

Whether this segment requires source-level "..." quoting.

Bare Nix identifiers match [a-zA-Z_][a-zA-Z0-9_'-]*. Anything else (leading digit, embedded ., leading -) needs quoting.

pub fn render(&self) -> String

Render to source form, wrapping in "..." only when needed.

Trait Implementations

impl Clone for Segment

fn clone(&self) -> Segment

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Segment

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Segment

fn deserialize<D: Deserializer<'de>>(deserializer: D) -> Result<Self, D::Error>

Deserialize this value from the given Serde deserializer.

impl Display for Segment

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

Formats the value using the given formatter.

impl Eq for Segment

impl From<Segment> for ChangeId

fn from(value: Segment) -> Self

Converts to this type from the input type.

impl From<Segment> for AttrPath

fn from(value: Segment) -> Self

Converts to this type from the input type.

impl FromStr for Segment

type Err = SegmentError

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Self, Self::Err>

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

impl Hash for Segment

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 Segment

fn cmp(&self, other: &Segment) -> 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.

impl PartialEq for Segment

fn eq(&self, other: &Segment) -> 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 PartialOrd for Segment

fn partial_cmp(&self, other: &Segment) -> 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 Serialize for Segment

fn serialize<S: Serializer>(&self, serializer: S) -> Result<S::Ok, S::Error>

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Segment