Enum TypeError 

pub enum TypeError {
    InvalidStateTransition {
        from: String,
        to: String,
    },
    PromotionInvariant(String),
    MissingField {
        field: &'static str,
    },
    ValidationFailed {
        reason: String,
    },
    Serialization(Error),
}

Core type system errors.

Variants

InvalidStateTransition

Invalid state transition.

Fields

from: String

Source state.

to: String

Target state.

PromotionInvariant(String)

Promotion invariant violated.

MissingField

Missing required field.

Fields

field: &'static str

Field name.

ValidationFailed

Validation failed.

Fields

reason: String

Reason for failure.

Serialization(Error)

Serialization error.

Implementations

impl TypeError

pub fn invalid_transition( from: impl Into<String>, to: impl Into<String>, ) -> TypeError

Create an invalid state transition error.

pub fn promotion_invariant(message: impl Into<String>) -> TypeError

Create a promotion invariant error.

pub fn missing_field(field: &'static str) -> TypeError

Create a missing field error.

pub fn validation_failed(reason: impl Into<String>) -> TypeError

Create a validation failed error.

Trait Implementations

impl Debug for TypeError

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

Formats the value using the given formatter.

impl Display for TypeError

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

Formats the value using the given formatter.

impl Error for TypeError

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 From<Error> for TypeError

fn from(source: Error) -> TypeError

Converts to this type from the input type.