Struct Segment 

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

Path segment

A single component of a SymbolPath. Just a name string. Kind information is managed by SymbolRegistry, not by Segment.

Invariants

• Must be a valid Rust identifier, OR
• Must be a numeric string (for tuple fields like 0, 1)
• Must be a scope marker (for InSymbol: $param, $var, $field)

Implementations

impl Segment

pub fn new(name: impl AsRef<str>) -> Result<Segment, ParseError>

Create a new segment with validation

Errors

• ParseError::InvalidIdentifier: Not a valid Rust identifier

pub fn name(&self) -> &str

Get the segment name

pub fn tuple_field(index: usize) -> Segment

Create a tuple field segment (numeric)

Examples

let seg = Segment::tuple_field(0);
assert_eq!(seg.name(), "0");

pub fn is_tuple_field(&self) -> bool

Check if this is a tuple field (all digits)

pub fn tuple_field_index(&self) -> Option<usize>

Get tuple field index if this is a tuple field

pub fn is_scope_marker(&self) -> bool

Check if this is a scope marker ($param, $var, $field, $body)

pub fn as_var_scope(&self) -> Option<VarScope>

Get the VarScope if this is a scope marker

pub fn param_scope() -> Segment

Parameter scope segment ($param)

pub fn local_scope() -> Segment

Variable scope segment ($var)

pub fn field_scope() -> Segment

Field scope segment ($field)

pub fn body_scope() -> Segment

Body scope segment ($body)

pub fn stmt_scope() -> Segment

Statement scope segment ($stmt)

pub fn expr_scope() -> Segment

Expression scope segment ($expr)

pub fn inherent_impl(self_ty: &str) -> Segment

Inherent impl segment: <impl Type>

pub fn trait_impl(trait_name: &str, self_ty: &str) -> Segment

Trait impl segment: <impl Trait for Type>

pub fn is_impl(&self) -> bool

Check if this is an impl block segment (<impl ...>)

pub fn is_trait_impl(&self) -> bool

Check if this is a trait impl segment (<impl Trait for Type>)

pub fn impl_self_ty(&self) -> Option<&str>

Extract the self type from an impl segment.

• <impl Type> → Some("Type")
• <impl Trait for Type> → Some("Type")
• non-impl → None

pub fn impl_trait(&self) -> Option<&str>

Extract the trait name from a trait impl segment.

• <impl Trait for Type> → Some("Trait")
• <impl Type> → None
• non-impl → None

pub fn is_param_scope(&self) -> bool

Check if this is a parameter scope segment ($param)

pub fn is_local_scope(&self) -> bool

Check if this is a local variable scope segment ($var)

pub fn is_field_scope(&self) -> bool

Check if this is a field scope segment ($field)

pub fn is_body_scope(&self) -> bool

Check if this is a body scope segment ($body)

pub fn is_stmt_scope(&self) -> bool

Check if this is a statement scope segment ($stmt)

pub fn is_expr_scope(&self) -> bool

Check if this is an expression scope segment ($expr)

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<(), Error>

Formats the value using the given formatter.

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

fn deserialize<__D>( __deserializer: __D, ) -> Result<Segment, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for Segment

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

Formats the value using the given formatter.

impl Hash for Segment

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

where __H: Hasher,

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 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 Serialize for Segment

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for Segment

impl StructuralPartialEq for Segment