Enum ErrorKind

#[non_exhaustive]
pub enum ErrorKind {
    WrongNumberOfParameters {
        got: usize,
        expected: usize,
    },
    ParseErrorAtKey {
        key: String,
        value: String,
        expected_type: &'static str,
    },
    ParseErrorAtIndex {
        index: usize,
        value: String,
        expected_type: &'static str,
    },
    ParseError {
        value: String,
        expected_type: &'static str,
    },
    InvalidUtf8InPathParam {
        key: String,
    },
    UnsupportedType {
        name: &'static str,
    },
    Message(String),
}

The kinds of errors that can happen we deserializing into a Path.

This type is obtained through FailedToDeserializePathParams::kind or FailedToDeserializePathParams::into_kind and is useful for building more precise error messages.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

WrongNumberOfParameters

The URI contained the wrong number of parameters.

Fields

got: usize

The number of actual parameters in the URI.

expected: usize

The number of expected parameters.

ParseErrorAtKey

Failed to parse the value at a specific key into the expected type.

This variant is used when deserializing into types that have named fields, such as structs.

Fields

key: String

The key at which the value was located.

value: String

The value from the URI.

expected_type: &'static str

The expected type of the value.

ParseErrorAtIndex

Failed to parse the value at a specific index into the expected type.

This variant is used when deserializing into sequence types, such as tuples.

Fields

index: usize

The index at which the value was located.

value: String

The value from the URI.

expected_type: &'static str

The expected type of the value.

ParseError

Failed to parse a value into the expected type.

This variant is used when deserializing into a primitive type (such as String and u32).

Fields

value: String

The value from the URI.

expected_type: &'static str

The expected type of the value.

InvalidUtf8InPathParam

A parameter contained text that, once percent decoded, wasn’t valid UTF-8.

Fields

key: String

The key at which the invalid value was located.

UnsupportedType

Tried to serialize into an unsupported type such as nested maps.

This error kind is caused by programmer errors and thus gets converted into a 500 Internal Server Error response.

Fields

name: &'static str

The name of the unsupported type.

Message(String)

Catch-all variant for errors that don’t fit any other variant.

Trait Implementations

impl Debug for ErrorKind

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

Formats the value using the given formatter.

impl Display for ErrorKind

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

Formats the value using the given formatter.

impl PartialEq for ErrorKind

fn eq(&self, other: &ErrorKind) -> 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 ErrorKind

impl StructuralPartialEq for ErrorKind

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 64 bytes

Size for each variant:

• WrongNumberOfParameters: 24 bytes
• ParseErrorAtKey: 64 bytes
• ParseErrorAtIndex: 56 bytes
• ParseError: 48 bytes
• InvalidUtf8InPathParam: 32 bytes
• UnsupportedType: 24 bytes
• Message: 32 bytes