Enum marked_yaml::Error

#[non_exhaustive]
pub enum Error {
    NotBoolean(Span),
    IntegerParseFailure(ParseIntError, Span),
    FloatParseFailure(ParseFloatError, Span),
    UnknownFieldError(String, &'static [&'static str], Span),
    Other(String, Span),
}

Available on crate feature serde only.

Errors which can come from deserialisation

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.

NotBoolean(Span)

The value was not a valid boolean

IntegerParseFailure(ParseIntError, Span)

Failed to parse integer

FloatParseFailure(ParseFloatError, Span)

Failed to parse float

UnknownFieldError(String, &'static [&'static str], Span)

An unknown field was encountered

Other(String, Span)

Some other error occurred

Implementations

impl Error

pub fn start_mark(&self) -> Option<Marker>

Retrieve the start marker if there is one

Most spans which are generated by the loader only have start marks (containers have end marks as well, but these failures) are unlikely to exist here.

const YAML: &str = r#"
bad: float
"#;

#[derive(Deserialize)]
struct Example {
    bad: Spanned<f64>,
}

let nodes = parse_yaml(0, YAML).unwrap();
let err = from_node::<Example>(&nodes).err().unwrap();

assert!(matches!(&*err, Error::FloatParseFailure(_,_)));

let mark = err.start_mark().unwrap();

assert_eq!(mark.source(), 0);
assert_eq!(mark.line(), 2);
assert_eq!(mark.column(), 6);

Trait Implementations

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)>

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

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

where T: Display,

Raised when there is general error when deserializing a type.

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

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

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 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(value: ParseFloatError) -> Self

Converts to this type from the input type.

impl From<ParseIntError> for Error

fn from(value: ParseIntError) -> Self

Converts to this type from the input type.

impl<'de> IntoDeserializer<'de, Error> for &'de MarkedMappingNode

type Deserializer = MarkedMappingNodeDeserializer<'de>

The type of the deserializer being converted into.

fn into_deserializer(self) -> Self::Deserializer

Convert this value into a deserializer.

impl<'de> IntoDeserializer<'de, Error> for &'de MarkedScalarNode

type Deserializer = MarkedScalarNodeDeserializer<'de>

The type of the deserializer being converted into.

fn into_deserializer(self) -> MarkedScalarNodeDeserializer<'de>

Convert this value into a deserializer.

impl<'de> IntoDeserializer<'de, Error> for &'de MarkedSequenceNode

type Deserializer = MarkedSequenceNodeDeserializer<'de>

The type of the deserializer being converted into.

fn into_deserializer(self) -> Self::Deserializer

Convert this value into a deserializer.

impl<'de> IntoDeserializer<'de, Error> for &'de Node

type Deserializer = NodeDeserializer<'de>

The type of the deserializer being converted into.

fn into_deserializer(self) -> Self::Deserializer

Convert this value into a deserializer.