Enum LexErr 

pub enum LexErr {
    DoesNotFitU16,
    DoesNotFitI16,
    InvalidHex,
    InvalidNumeric,
    InvalidHexEmpty,
    InvalidDecEmpty,
    UnknownIntErr,
    UnclosedStrLit,
    StrLitTooBig,
    InvalidReg,
    InvalidSymbol,
}

Any errors raised in attempting to tokenize an input stream.

Variants

DoesNotFitU16

Numeric literal (unsigned dec, hex, and bin) cannot fit within the range of a u16

DoesNotFitI16

Numeric literal (signed dec) cannot fit within the range of a i16

InvalidHex

Hex literal (starting with x) has invalid hex digits

InvalidNumeric

Numeric literal could not be parsed as a decimal literal because it has invalid digits (i.e., not 0-9)

InvalidHexEmpty

Hex literal (starting with x) doesn’t have digits after it.

InvalidDecEmpty

Numeric literal could not be parsed as a decimal literal because there are no digits in it (it’s just # or #-)

UnknownIntErr

Int parsing failed but the reason why is unknown

UnclosedStrLit

String literal is missing an end quotation mark.

StrLitTooBig

String literal is larger than the maximum string size (u16::MAX - 1).

InvalidReg

Token had the format R\d, but \d isn’t 0-7.

InvalidSymbol

A symbol was used which is not allowed in LC3 assembly files

Trait Implementations

impl Clone for LexErr

fn clone(&self) -> LexErr

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LexErr

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

Formats the value using the given formatter.

impl Default for LexErr

fn default() -> LexErr

Returns the “default value” for a type.

impl Display for LexErr

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

Formats the value using the given formatter.

impl Error for LexErr

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl Error for LexErr

fn help(&self) -> Option<Cow<'_, str>>

A clarifying message to help aid someone in how to fix the message.

fn span(&self) -> Option<ErrSpan>

The range where this error occurs in source.

impl PartialEq for LexErr

fn eq(&self, other: &LexErr) -> 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 Copy for LexErr

impl Eq for LexErr

impl StructuralPartialEq for LexErr