Enum lc3_ensemble::parse::lex::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 missing an end quotation mark.

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 copy 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 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 Error for LexErr

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

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 PartialEq for LexErr

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

This method tests for self and other values to be equal, and is used by ==.

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

This method 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