Enum ValueError 

pub enum ValueError {
    NotANumber {
        raw: String,
        source: ParseFloatError,
    },
    NotAnInteger {
        raw: String,
        source: ParseIntError,
    },
    NotABool {
        raw: String,
        source: ParseBoolError,
    },
    OutOfRange {
        value: String,
        min: String,
        max: String,
    },
    UnknownOption {
        raw: String,
        options: &'static [&'static str],
    },
    UnknownParam {
        id: String,
        known: Vec<&'static str>,
    },
    BadOverride {
        raw: String,
    },
    Param {
        id: String,
        source: Box<Self>,
    },
    WrongKind {
        expected: ValueKind,
        found: ValueKind,
        value: String,
    },
}

A parameter value that cannot be read, or does not fit its descriptor.

The source of text that cannot be parsed as its kind is the parser’s error.

Variants

NotANumber

Text that cannot be parsed as an f32.

Fields

raw: String

Text as given.

source: ParseFloatError

Error of the f32 parser.

NotAnInteger

Text that cannot be parsed as a u32.

Fields

raw: String

Text as given.

source: ParseIntError

Error of the u32 parser.

NotABool

Text that cannot be parsed as a bool.

Fields

raw: String

Text as given.

source: ParseBoolError

Error of the bool parser.

OutOfRange

A number outside the descriptor’s inclusive bounds. A non-finite number is outside every bound.

Fields

value: String

Number as text.

min: String

Lower bound as text.

max: String

Upper bound as text.

UnknownOption

Neither the index nor the name of an option.

Fields

raw: String

Text as given, or the index as text.

options: &'static [&'static str]

Options of the parameter.

UnknownParam

An id no descriptor has.

Fields

id: String

Id as given.

known: Vec<&'static str>

Ids the descriptors have.

BadOverride

An override with no = between the id and the value.

Fields

raw: String

Override as given.

Param

A value that parameter id rejects.

Fields

id: String

Id of the parameter.

source: Box<Self>

Reason the descriptor rejects the value.

WrongKind

A value passed to check_value whose kind differs from the descriptor’s kind.

Fields

expected: ValueKind

Kind that the descriptor accepts.

found: ValueKind

Kind of the value.

value: String

Value as text.

Trait Implementations

impl Clone for ValueError

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ValueError

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

Formats the value using the given formatter.

impl Display for ValueError

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

Formats the value using the given formatter.

impl Eq for ValueError

impl Error for ValueError

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 PartialEq for ValueError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ValueError