Enum Error 

#[non_exhaustive]
pub enum Error {
    UnexpectedEof,
    InvalidEscapeSequence,
    StringControlChar,
    ExpectedColon,
    ExpectedArrayCommaOrEnd,
    ExpectedArrayEnd,
    LeadingArrayComma,
    TrailingArrayComma,
    ExpectedObjectCommaOrEnd,
    ExpectedObjectEnd,
    LeadingObjectComma,
    TrailingObjectComma,
    ExpectedToken,
    ExpectedNull,
    ExpectedString,
    ExpectedArray,
    ExpectedObject,
    ExpectedStruct,
    ExpectedEnumValue,
    ExpectedEnumObjectEnd,
    InvalidNumber,
    InvalidType,
    InvalidUnicodeCodePoint,
    KeyMustBeAString,
    TrailingCharacters,
    UnexpectedChar,
    InvalidLength,
    DeserializeError(String),
}

Deserialization error

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.

UnexpectedEof

EOF while parsing

InvalidEscapeSequence

Invalid JSON string escape sequence

StringControlChar

A control ASCII character detected in a JSON input

ExpectedColon

Expected this character to be a ':'.

ExpectedArrayCommaOrEnd

Expected this character to be either a ',' or a ']'.

ExpectedArrayEnd

Expected a ']' character

LeadingArrayComma

Array content starts with a leading ','.

TrailingArrayComma

Array content ends with a trailing ','.

ExpectedObjectCommaOrEnd

Expected this character to be either a ',' or a '}'.

ExpectedObjectEnd

Expected this character to be '}'.

LeadingObjectComma

Object content starts with a leading ,.

TrailingObjectComma

Object content ends with a trailing ,.

ExpectedToken

Expected to parse either true, false, or null.

ExpectedNull

Expected null

ExpectedString

Expected a " character

ExpectedArray

Expected an array

ExpectedObject

Expected an object

ExpectedStruct

Expected an object or an array

ExpectedEnumValue

Expected this character to start an enum variant.

ExpectedEnumObjectEnd

Expected this character to be '}'.

InvalidNumber

Invalid number

InvalidType

Invalid type

InvalidUnicodeCodePoint

Invalid unicode code point

KeyMustBeAString

Object key is not a string

TrailingCharacters

JSON has non-whitespace trailing characters after the value

UnexpectedChar

Unexpected character

InvalidLength

Invalid length

DeserializeError(String)

Available on crate features std or alloc only.

An error passed down from a serde::de::Deserialize implementation

Trait Implementations

impl Clone for Error

fn clone(&self) -> Error

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Error

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

Formats the value using the given formatter.

impl Display for Error

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

Formats the value using the given formatter.

impl Error for Error

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 Error for Error

Available on crate features std or alloc only.

fn custom<T: Display>(msg: T) -> Self

Raised when there is general error when deserializing a type.

fn invalid_type(unexp: Unexpected<'_>, exp: &dyn Expected) -> Self

Raised when a Deserialize receives a type different from what it was expecting.

fn invalid_value(unexp: Unexpected<'_>, exp: &dyn Expected) -> Self

Raised when a Deserialize receives a value of the right type but that is wrong for some other reason.

fn invalid_length(len: usize, exp: &dyn Expected) -> Self

Raised when deserializing a sequence or map and the input data contains too many or too few elements.

fn unknown_variant(variant: &str, expected: &'static [&'static str]) -> Self

Raised when a Deserialize enum type received a variant with an unrecognized name.

fn unknown_field(field: &str, expected: &'static [&'static str]) -> Self

Raised when a Deserialize struct type received a field with an unrecognized name.

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

Raised when a Deserialize struct type expected to receive a required field with a particular name but that field was not present in the input.

fn duplicate_field(field: &'static str) -> Self

Raised when a Deserialize struct type received more than one of the same field.

impl From<ParseFloatError> for Error

fn from(_err: ParseFloatError) -> Self

Converts to this type from the input type.

impl From<ParseIntError> for Error

fn from(_err: ParseIntError) -> Self

Converts to this type from the input type.

impl From<Utf8Error> for Error

fn from(_err: Utf8Error) -> Self

Converts to this type from the input type.

impl PartialEq for Error

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

impl StructuralPartialEq for Error