Enum ParseError 

pub enum ParseError {
    NoDigits,
    NoExponentDigits,
    Invalid,
}

Why a spelling is not a number.

The caller is expected to have checked the shape of the token already, so these are the cases a lexer cannot rule out rather than a full grammar.

Variants

NoDigits

There is no digit anywhere in it.

NoExponentDigits

There is an exponent marker with no digits after it.

Invalid

There is a character in it that a number does not have.

Trait Implementations

impl Clone for ParseError

fn clone(&self) -> ParseError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ParseError

impl Debug for ParseError

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

Formats the value using the given formatter.

impl Eq for ParseError

impl PartialEq for ParseError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ParseError