Struct Diagnostic 

pub struct Diagnostic {
    pub level: DiagnosticLevel,
    pub message: String,
    pub span: Option<Span>,
    pub help: Option<String>,
}

A single compiler diagnostic.

Fields

level: DiagnosticLevel

Severity level.

message: String

Human-readable message.

span: Option<Span>

Optional source span.

help: Option<String>

Optional help/hint text.

Implementations

impl Diagnostic

pub fn error(message: impl Into<String>) -> Self

Construct an error diagnostic.

pub fn warning(message: impl Into<String>) -> Self

Construct a warning.

pub fn note(message: impl Into<String>) -> Self

Construct a note.

pub fn with_span(self, span: Span) -> Self

Attach a source span.

pub fn with_help(self, help: impl Into<String>) -> Self

Attach a help string.

pub fn is_fatal(&self) -> bool

Return true if this diagnostic is fatal.

Trait Implementations

impl Clone for Diagnostic

fn clone(&self) -> Diagnostic

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Diagnostic

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

Formats the value using the given formatter.