Enum serde::de::Unexpected

pub enum Unexpected<'a> {
    Bool(bool),
    Unsigned(u64),
    Signed(i64),
    Float(f64),
    Char(char),
    Str(&'a str),
    Bytes(&'a [u8]),
    Unit,
    Option,
    NewtypeStruct,
    Seq,
    Map,
    Enum,
    UnitVariant,
    NewtypeVariant,
    TupleVariant,
    StructVariant,
    Other(&'a str),
}

Unexpected represents an unexpected invocation of any one of the Visitor trait methods.

This is used as an argument to the invalid_type, invalid_value, and invalid_length methods of the Error trait to build error messages.

# use std::fmt;
#
# use serde::de::{self, Unexpected, Visitor};
#
# struct Example;
#
# impl<'de> Visitor<'de> for Example {
#     type Value = ();
#
#     fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
#         write!(formatter, "definitely not a boolean")
#     }
#
fn visit_bool<E>(self, v: bool) -> Result<Self::Value, E>
where
    E: de::Error,
{
    Err(de::Error::invalid_type(Unexpected::Bool(v), &self))
}
# }

Variants

Bool(bool)

The input contained a boolean value that was not expected.

Unsigned(u64)

The input contained an unsigned integer u8, u16, u32 or u64 that was not expected.

Signed(i64)

The input contained a signed integer i8, i16, i32 or i64 that was not expected.

Float(f64)

The input contained a floating point f32 or f64 that was not expected.

Char(char)

The input contained a char that was not expected.

Str(&'a str)

The input contained a &str or String that was not expected.

Bytes(&'a [u8])

The input contained a &[u8] or Vec<u8> that was not expected.

Unit

The input contained a unit () that was not expected.

Option

The input contained an Option<T> that was not expected.

NewtypeStruct

The input contained a newtype struct that was not expected.

Seq

The input contained a sequence that was not expected.

Map

The input contained a map that was not expected.

Enum

The input contained an enum that was not expected.

UnitVariant

The input contained a unit variant that was not expected.

NewtypeVariant

The input contained a newtype variant that was not expected.

TupleVariant

The input contained a tuple variant that was not expected.

StructVariant

The input contained a struct variant that was not expected.

Other(&'a str)

A message stating what uncategorized thing the input contained that was not expected.

The message should be a noun or noun phrase, not capitalized and without a period. An example message is "unoriginal superhero".

Trait Implementations

impl<'a> Clone for Unexpected<'a>

fn clone(&self) -> Unexpected<'a>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'a> PartialEq<Unexpected<'a>> for Unexpected<'a>

fn eq(&self, other: &Unexpected<'a>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Unexpected<'a>) -> bool

This method tests for !=.

impl<'a> Copy for Unexpected<'a>

impl<'a> Debug for Unexpected<'a>

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

Formats the value using the given formatter.

impl<'a> Display for Unexpected<'a>

fn fmt(&self, formatter: &mut Formatter) -> Result<(), Error>

Formats the value using the given formatter.