Enum Mode 

pub enum Mode {
    Lossless,
    Lite,
}

How much of the source the stream carries.

The two modes exist because the consumers genuinely differ. A compiler front end, a formatter or a source-to-source translator must be able to rebuild the input, so they need every byte. Evidence extraction throws trivia away immediately, so carrying it only costs allocations.

Variants

Lossless

Every byte belongs to a token; the stream rebuilds the source exactly.

Lite

Whitespace and comments are skipped. Positions stay exact, so spans remain usable, but the stream no longer round-trips.

Trait Implementations

impl Clone for Mode

fn clone(&self) -> Mode

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Mode

impl Debug for Mode

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

Formats the value using the given formatter.

impl Default for Mode

fn default() -> Mode

Returns the “default value” for a type.

impl Eq for Mode

impl PartialEq for Mode

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Mode