Struct Builder 

pub struct Builder { /* private fields */ }

Builder for constructing Diagnostic instances.

All methods are builder-pattern (consume and return Self). Call build to finalize into an immutable Diagnostic.

Implementations

impl Builder

pub fn level(self, level: Level) -> Self

Sets the severity level.

pub fn message(self, msg: impl Into<String>) -> Self

Sets the diagnostic message.

pub fn span(self, spans: impl MultiSpan) -> Self

Sets the source span(s). Accepts a Span, Vec<Span>, or &[Span].

pub fn add(self, child: impl Into<Builder>) -> Self

Adds a child diagnostic. Accepts a Builder (built automatically) or a Diagnostic (via Into<Builder>).

pub fn build(self) -> Diagnostic

Finalizes the builder into an immutable Diagnostic.

Trait Implementations

impl Clone for Builder

fn clone(&self) -> Builder

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Builder

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

Formats the value using the given formatter.

impl Default for Builder

fn default() -> Builder

Returns the “default value” for a type.

impl From<Diagnostic> for Builder

fn from(d: Diagnostic) -> Self

Converts to this type from the input type.