Struct Alternative 

pub struct Alternative { /* private fields */ }

One declared alternative at a site: which operator family produced it, the semantic bytes that identify the operation, and the value it means.

The bytes and the meaning travel together because they are one statement. A rendering that carried the meaning without the bytes would emit a value nothing could select, and one that carried the bytes without the meaning would select a value nothing renders.

Implementations

impl Alternative

pub fn stated( family: FamilySlug, operation: Vec<u8>, meaning: Vec<GeneratedToken>, ) -> Result<Self, DeclarationError>

Declare one alternative at a site.

Errors

Returns DeclarationError::Absent where the operation carries no bytes: an alternative that identifies no operation is one nothing can select.

pub const fn family(&self) -> &FamilySlug

The operator family this alternative belongs to.

pub fn operation(&self) -> &[u8]

The semantic bytes that identify this operation.

pub fn meaning(&self) -> &[GeneratedToken]

The value this alternative means, as the tokens that spell it.

Trait Implementations

impl Clone for Alternative

fn clone(&self) -> Alternative

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Alternative

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

Formats the value using the given formatter.

impl Eq for Alternative

impl Hash for Alternative

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 PartialEq for Alternative

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Alternative