Struct serde_json::Number

pub struct Number(_);

Represents a JSON number, whether integer or floating point.

Methods

impl Number

fn is_i64(&self) -> bool

Returns true if the number can be represented by i64.

fn is_u64(&self) -> bool

Returns true if the number can be represented as u64.

fn is_f64(&self) -> bool

Returns true if the number can be represented as f64.

fn as_i64(&self) -> Option<i64>

Returns the number represented as i64 if possible, or else None.

fn as_u64(&self) -> Option<u64>

Returns the number represented as u64 if possible, or else None.

fn as_f64(&self) -> Option<f64>

Returns the number represented as f64 if possible, or else None.

fn from_f64(f: f64) -> Option<Number>

Converts a finite f64 to a Number. Infinite or NaN values are not JSON numbers.

Trait Implementations

impl Debug for Number

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Clone for Number

fn clone(&self) -> Number

Returns a copy of the value.

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

Performs copy-assignment from source.

impl PartialEq for Number

fn eq(&self, __arg_0: &Number) -> bool

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

fn ne(&self, __arg_0: &Number) -> bool

This method tests for !=.

impl Display for Number

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

Formats the value using the given formatter.

impl Serialize for Number

fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error> where S: Serializer

Serializes this value into this serializer.

impl Deserialize for Number

fn deserialize<D>(deserializer: D) -> Result<Number, D::Error> where D: Deserializer

Deserialize this value given this Deserializer.

impl Deserializer for Number

type Error = Error

The error type that can be returned if some error occurs during deserialization.

fn deserialize<V>(self, visitor: V) -> Result<V::Value, Error> where V: Visitor

This method walks a visitor through a value as it is being deserialized.

fn deserialize_bool<__V>(self, visitor: __V) -> Result<__V::Value, Self::Error> where __V: Visitor

This method hints that the Deserialize type is expecting a bool value.

fn deserialize_usize<__V>(self, visitor: __V) -> Result<__V::Value, Self::Error> where __V: Visitor

This method hints that the Deserialize type is expecting an usize value. A reasonable default is to forward to deserialize_u64.

fn deserialize_u8<__V>(self, visitor: __V) -> Result<__V::Value, Self::Error> where __V: Visitor

This method hints that the Deserialize type is expecting an u8 value. A reasonable default is to forward to deserialize_u64.

fn deserialize_u16<__V>(self, visitor: __V) -> Result<__V::Value, Self::Error> where __V: Visitor

This method hints that the Deserialize type is expecting an u16 value. A reasonable default is to forward to deserialize_u64.

fn deserialize_u32<__V>(self, visitor: __V) -> Result<__V::Value, Self::Error> where __V: Visitor

This method hints that the Deserialize type is expecting an u32 value. A reasonable default is to forward to deserialize_u64.

fn deserialize_u64<__V>(self, visitor: __V) -> Result<__V::Value, Self::Error> where __V: Visitor

This method hints that the Deserialize type is expecting an u64 value.

fn deserialize_isize<__V>(self, visitor: __V) -> Result<__V::Value, Self::Error> where __V: Visitor

This method hints that the Deserialize type is expecting an isize value. A reasonable default is to forward to deserialize_i64.

fn deserialize_i8<__V>(self, visitor: __V) -> Result<__V::Value, Self::Error> where __V: Visitor

This method hints that the Deserialize type is expecting an i8 value. A reasonable default is to forward to deserialize_i64.

fn deserialize_i16<__V>(self, visitor: __V) -> Result<__V::Value, Self::Error> where __V: Visitor

This method hints that the Deserialize type is expecting an i16 value. A reasonable default is to forward to deserialize_i64.

fn deserialize_i32<__V>(self, visitor: __V) -> Result<__V::Value, Self::Error> where __V: Visitor

This method hints that the Deserialize type is expecting an i32 value. A reasonable default is to forward to deserialize_i64.

fn deserialize_i64<__V>(self, visitor: __V) -> Result<__V::Value, Self::Error> where __V: Visitor

This method hints that the Deserialize type is expecting an i64 value.

fn deserialize_f32<__V>(self, visitor: __V) -> Result<__V::Value, Self::Error> where __V: Visitor

This method hints that the Deserialize type is expecting a f32 value. A reasonable default is to forward to deserialize_f64.

fn deserialize_f64<__V>(self, visitor: __V) -> Result<__V::Value, Self::Error> where __V: Visitor

This method hints that the Deserialize type is expecting a f64 value.

fn deserialize_char<__V>(self, visitor: __V) -> Result<__V::Value, Self::Error> where __V: Visitor

This method hints that the Deserialize type is expecting a char value.

fn deserialize_str<__V>(self, visitor: __V) -> Result<__V::Value, Self::Error> where __V: Visitor

This method hints that the Deserialize type is expecting a &str value.

fn deserialize_string<__V>(self,
                           visitor: __V)
                           -> Result<__V::Value, Self::Error> where __V: Visitor

This method hints that the Deserialize type is expecting a String value.

fn deserialize_unit<__V>(self, visitor: __V) -> Result<__V::Value, Self::Error> where __V: Visitor

This method hints that the Deserialize type is expecting an unit value.

fn deserialize_option<__V>(self,
                           visitor: __V)
                           -> Result<__V::Value, Self::Error> where __V: Visitor

This method hints that the Deserialize type is expecting an Option value. This allows deserializers that encode an optional value as a nullable value to convert the null value into a None, and a regular value as Some(value).

fn deserialize_seq<__V>(self, visitor: __V) -> Result<__V::Value, Self::Error> where __V: Visitor

This method hints that the Deserialize type is expecting a sequence value. This allows deserializers to parse sequences that aren't tagged as sequences.

fn deserialize_seq_fixed_size<__V>(self,
                                   _: usize,
                                   visitor: __V)
                                   -> Result<__V::Value, Self::Error> where __V: Visitor

This method hints that the Deserialize type is expecting a fixed size array. This allows deserializers to parse arrays that aren't tagged as arrays.

fn deserialize_bytes<__V>(self, visitor: __V) -> Result<__V::Value, Self::Error> where __V: Visitor

This method hints that the Deserialize type is expecting a &[u8]. This allows deserializers that provide a custom byte vector serialization to properly deserialize the type.

fn deserialize_byte_buf<__V>(self,
                             visitor: __V)
                             -> Result<__V::Value, Self::Error> where __V: Visitor

This method hints that the Deserialize type is expecting a Vec<u8>. This allows deserializers that provide a custom byte vector serialization to properly deserialize the type and prevent needless intermediate allocations that would occur when going through &[u8].

fn deserialize_map<__V>(self, visitor: __V) -> Result<__V::Value, Self::Error> where __V: Visitor

This method hints that the Deserialize type is expecting a map of values. This allows deserializers to parse sequences that aren't tagged as maps.

fn deserialize_unit_struct<__V>(self,
                                _: &'static str,
                                visitor: __V)
                                -> Result<__V::Value, Self::Error> where __V: Visitor

This method hints that the Deserialize type is expecting a unit struct. This allows deserializers to a unit struct that aren't tagged as a unit struct.

fn deserialize_newtype_struct<__V>(self,
                                   _: &'static str,
                                   visitor: __V)
                                   -> Result<__V::Value, Self::Error> where __V: Visitor

This method hints that the Deserialize type is expecting a newtype struct. This allows deserializers to a newtype struct that aren't tagged as a newtype struct. A reasonable default is to simply deserialize the expected value directly.

fn deserialize_tuple_struct<__V>(self,
                                 _: &'static str,
                                 _: usize,
                                 visitor: __V)
                                 -> Result<__V::Value, Self::Error> where __V: Visitor

This method hints that the Deserialize type is expecting a tuple struct. This allows deserializers to parse sequences that aren't tagged as sequences.

fn deserialize_struct<__V>(self,
                           _: &'static str,
                           _: &'static [&'static str],
                           visitor: __V)
                           -> Result<__V::Value, Self::Error> where __V: Visitor

This method hints that the Deserialize type is expecting a struct. This allows deserializers to parse sequences that aren't tagged as maps.

fn deserialize_struct_field<__V>(self,
                                 visitor: __V)
                                 -> Result<__V::Value, Self::Error> where __V: Visitor

This method hints that the Deserialize type is expecting some sort of struct field name. This allows deserializers to choose between &str, usize, or &[u8] to properly deserialize a struct field.

fn deserialize_tuple<__V>(self,
                          _: usize,
                          visitor: __V)
                          -> Result<__V::Value, Self::Error> where __V: Visitor

This method hints that the Deserialize type is expecting a tuple value. This allows deserializers that provide a custom tuple serialization to properly deserialize the type.

fn deserialize_enum<__V>(self,
                         _: &'static str,
                         _: &'static [&'static str],
                         visitor: __V)
                         -> Result<__V::Value, Self::Error> where __V: Visitor

This method hints that the Deserialize type is expecting an enum value. This allows deserializers that provide a custom enumeration serialization to properly deserialize the type.

fn deserialize_ignored_any<__V>(self,
                                visitor: __V)
                                -> Result<__V::Value, Self::Error> where __V: Visitor

This method hints that the Deserialize type needs to deserialize a value whose type doesn't matter because it is ignored.

impl From<i8> for Number

fn from(i: i8) -> Self

Performs the conversion.

impl From<i16> for Number

fn from(i: i16) -> Self

Performs the conversion.

impl From<i32> for Number

fn from(i: i32) -> Self

Performs the conversion.

impl From<i64> for Number

fn from(i: i64) -> Self

Performs the conversion.

impl From<isize> for Number

fn from(i: isize) -> Self

Performs the conversion.

impl From<u8> for Number

fn from(u: u8) -> Self

Performs the conversion.

impl From<u16> for Number

fn from(u: u16) -> Self

Performs the conversion.

impl From<u32> for Number

fn from(u: u32) -> Self

Performs the conversion.

impl From<u64> for Number

fn from(u: u64) -> Self

Performs the conversion.

impl From<usize> for Number

fn from(u: usize) -> Self

Performs the conversion.