Enum lexical::ErrorCode

#[repr(i32)]
pub enum ErrorCode {
    Overflow,
    Underflow,
    InvalidDigit,
    Empty,
    EmptyMantissa,
    EmptyExponent,
    EmptyInteger,
    EmptyFraction,
    InvalidPositiveMantissaSign,
    MissingMantissaSign,
    InvalidExponent,
    InvalidPositiveExponentSign,
    MissingExponentSign,
    ExponentWithoutFraction,
    InvalidLeadingZeros,
    // some variants omitted
}

Error code, indicating failure type.

Error messages are designating by an error code of less than 0. This is to be compatible with C conventions. This enumeration is FFI-compatible for interfacing with C code.

FFI

For interfacing with FFI-code, this may be approximated by:

const int32_t OVERFLOW = -1;
const int32_t UNDERFLOW = -2;
const int32_t INVALID_DIGIT = -3;
const int32_t EMPTY = -4;
const int32_t EMPTY_FRACTION = -5;
const int32_t EMPTY_EXPONENT = -6;

Safety

Assigning any value outside the range [-6, -1] to value of type ErrorCode may invoke undefined-behavior.

Variants

Overflow

Integral overflow occurred during numeric parsing.

Numeric overflow takes precedence over the presence of an invalid digit.

Underflow

Integral underflow occurred during numeric parsing.

Numeric overflow takes precedence over the presence of an invalid digit.

InvalidDigit

Invalid digit found before string termination.

Empty

Empty byte array found.

EmptyMantissa

Empty mantissa found.

EmptyExponent

Empty exponent found.

EmptyInteger

Empty integer found.

EmptyFraction

Empty fraction found.

InvalidPositiveMantissaSign

Invalid positive mantissa sign was found.

MissingMantissaSign

Mantissa sign was required, but not found.

InvalidExponent

Exponent was present but not allowed.

InvalidPositiveExponentSign

Invalid positive exponent sign was found.

MissingExponentSign

Exponent sign was required, but not found.

ExponentWithoutFraction

Exponent was present without fraction component.

InvalidLeadingZeros

Integer had invalid leading zeros.

Trait Implementations

impl Clone for ErrorCode

pub fn clone(&self) -> ErrorCode

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ErrorCode

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

Formats the value using the given formatter.

impl From<ErrorCode> for Error

pub fn from(code: ErrorCode) -> Error

Performs the conversion.

impl Ord for ErrorCode

pub fn cmp(&self, other: &ErrorCode) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

Restrict a value to a certain interval.

impl PartialEq<ErrorCode> for ErrorCode

pub fn eq(&self, other: &ErrorCode) -> 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 !=.

impl PartialOrd<ErrorCode> for ErrorCode

pub fn partial_cmp(&self, other: &ErrorCode) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

This method tests less than (for self and other) and is used by the < operator.

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

This method tests less than or equal to (for self and other) and is used by the <= operator.

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

This method tests greater than (for self and other) and is used by the > operator.

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

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl Copy for ErrorCode

impl Eq for ErrorCode

impl StructuralEq for ErrorCode

impl StructuralPartialEq for ErrorCode