Struct HumanProjection 

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

One bounded human-readable rendering of a typed value.

It is a projection and only a projection: derived from typed values, carried for a person to read, and never read back. No decision, no identity, and no refusal anywhere in this compiler consults one.

Implementations

impl HumanProjection

pub fn projected(text: &str) -> Result<Self, Overflow>

Render one bounded human projection.

Errors

Returns Overflow when the rendering runs past HUMAN_TEXT_LIMIT. A projection that does not fit refuses rather than truncating: a silently cut explanation is a false one.

pub fn empty() -> Self

The empty rendering. Total: a caller with nothing to say for a person still owes a value rather than a hole.

pub fn len(&self) -> usize

The rendering’s byte length.

pub fn is_empty(&self) -> bool

Whether the rendering carries no bytes.

pub fn shown(&self) -> String

The rendering, for a caller to SHOW a person.

The one lawful use of the bytes and a one-way road out: a frontend that must put a sentence in front of somebody calls this, and nothing inside the compiler calls it at all.

Trait Implementations

impl Clone for HumanProjection

fn clone(&self) -> HumanProjection

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for HumanProjection

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

Formats the value using the given formatter.

impl Eq for HumanProjection

impl Hash for HumanProjection

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 HumanProjection

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for HumanProjection