Struct Diagnostics 

pub struct Diagnostics { /* private fields */ }

Every syntax error from one parse, plus the source label for the header.

Implementations

impl Diagnostics

pub fn len(&self) -> usize

How many errors were found.

pub fn is_empty(&self) -> bool

Whether there are no errors (a Diagnostics is only constructed when the parse failed, so in practice this is always false).

pub fn set_file(&mut self, file: &str)

Attach (or replace) the source label shown in the header — used by the compiler, which knows the file name the parser does not.

pub fn render( &self, max_classes: Option<usize>, max_per_class: Option<usize>, ) -> String

Render the errors grouped by class.

max_classes caps how many classes are shown; max_per_class caps how many places are listed within each class. None (or Some(0), or a cap ≥ the count) means “all”. A cap that hides some places adds a … and N more <class> problems line; a cap that hides some classes adds a … and N more classes footer.

Trait Implementations

impl Clone for Diagnostics

fn clone(&self) -> Diagnostics

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Diagnostics

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

Formats the value using the given formatter.

impl Display for Diagnostics

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

Formats the value using the given formatter.

impl Eq for Diagnostics

impl PartialEq for Diagnostics

fn eq(&self, other: &Diagnostics) -> 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 StructuralPartialEq for Diagnostics