Enum ToArgsError 

pub enum ToArgsError {
    SchemaBuild(String),
    Serialize(String),
    InvalidRootValue,
    InvalidSubcommandValue {
        field_name: String,
    },
    UnknownSubcommandVariant {
        field_name: String,
        variant: String,
    },
    NegativeCount {
        arg_name: String,
        count: i64,
    },
    UnsupportedScalarValue {
        arg_name: String,
    },
    CurrentExe(String),
}

Error type for converting a typed CLI value back into command-line arguments.

Variants

SchemaBuild(String)

Failed to build schema from the type’s shape.

Serialize(String)

Failed to serialize a value into an intermediate config tree.

InvalidRootValue

Top-level value was not an object/map.

InvalidSubcommandValue

A required subcommand field contained a non-enum value.

Fields

field_name: String

Effective field name of the subcommand field.

UnknownSubcommandVariant

An enum variant did not match any known subcommand.

Fields

field_name: String

Effective field name of the subcommand field.

variant: String

Variant name encountered in serialized data.

NegativeCount

A counted flag had a negative count.

Fields

arg_name: String

Effective field name of the counted argument.

count: i64

Negative count encountered in serialized data.

UnsupportedScalarValue

A scalar argument value had an unsupported shape.

Fields

arg_name: String

Effective field name of the argument.

CurrentExe(String)

Failed to resolve the current executable path.

Trait Implementations

impl Clone for ToArgsError

fn clone(&self) -> ToArgsError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ToArgsError

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

Formats the value using the given formatter.

impl Display for ToArgsError

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

Formats the value using the given formatter.

impl Error for ToArgsError

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 ToArgsError

fn eq(&self, other: &ToArgsError) -> 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 Eq for ToArgsError

impl StructuralPartialEq for ToArgsError