Enum Num 

pub enum Num {
    U8(u8),
    U16(u16),
    U32(u32),
    U64(u64),
    U128(u128),
    USize(usize),
    I8(i8),
    I16(i16),
    I32(i32),
    I64(i64),
    I128(i128),
    ISize(isize),
    F32(f32),
    F64(f64),
}

A signed or unsigned numeric value.

Variants

U8(u8)

An 8-bit unsigned integer.

U16(u16)

A 16-bit unsigned integer.

U32(u32)

A 32-bit unsigned integer.

U64(u64)

A 64-bit unsigned integer.

U128(u128)

A 128-bit unsigned integer.

USize(usize)

An unsigned integer of platform width.

I8(i8)

An 8-bit signed integer.

I16(i16)

A 16-bit signed integer.

I32(i32)

A 32-bit signed integer.

I64(i64)

A 64-bit signed integer.

I128(i128)

A 128-bit signed integer.

ISize(isize)

A signed integer of platform width.

F32(f32)

A 32-bit wide float.

F64(f64)

A 64-bit wide float.

Implementations

impl Num

pub fn to_u32(self) -> Option<u32>

Converts self into a u32 if self is an unsigned variant with <= 32 bits.

Example

use figment::value::Num;

let num: Num = 123u8.into();
assert_eq!(num.to_u32(), Some(123));

let num: Num = (u32::max_value() as u64 + 1).into();
assert_eq!(num.to_u32(), None);

pub fn to_u128(self) -> Option<u128>

Converts self into a u128 if self is an unsigned variant.

Example

use figment::value::Num;

let num: Num = 123u8.into();
assert_eq!(num.to_u128(), Some(123));

pub fn to_u128_lossy(self) -> Option<u128>

Converts self into a u128 if it is non-negative, even if self is of a signed variant.

Example

use figment::value::Num;

let num: Num = 123u8.into();
assert_eq!(num.to_u128_lossy(), Some(123));

let num: Num = 123i8.into();
assert_eq!(num.to_u128_lossy(), Some(123));

pub fn to_i128(self) -> Option<i128>

Converts self into an i128 if self is a signed Value::Num variant.

Example

use figment::value::Num;

let num: Num = 123i8.into();
assert_eq!(num.to_i128(), Some(123));

pub fn to_f64(&self) -> Option<f64>

Converts self into an f64 if self is either a Num::F32 or Num::F64.

Example

use figment::value::Num;

let num: Num = 3.0f32.into();
assert_eq!(num.to_f64(), Some(3.0f64));

pub fn to_actual(&self) -> Actual

Converts self into an Actual. All unsigned variants return Actual::Unsigned, signed variants Actual::Signed, and float variants Actual::Float. Values exceeding the bit-width of the target Actual are truncated.

Example

use figment::{value::Num, error::Actual};

assert_eq!(Num::U8(10).to_actual(), Actual::Unsigned(10));
assert_eq!(Num::U64(2380).to_actual(), Actual::Unsigned(2380));

assert_eq!(Num::I8(127).to_actual(), Actual::Signed(127));
assert_eq!(Num::ISize(23923).to_actual(), Actual::Signed(23923));

assert_eq!(Num::F32(2.5).to_actual(), Actual::Float(2.5));
assert_eq!(Num::F64(2.103).to_actual(), Actual::Float(2.103));

Trait Implementations

impl Clone for Num

fn clone(&self) -> Num

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Num

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

Formats the value using the given formatter.

impl<'de> Deserializer<'de> for Num

type Error = Error

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

fn deserialize_any<V>( self, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, Error>

where V: Visitor<'de>,

Require the Deserializer to figure out how to drive the visitor based on what data type is in the input.

fn deserialize_bool<V>( self, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Num as Deserializer<'de>>::Error>

where V: Visitor<'de>,

Hint that the Deserialize type is expecting a bool value.

fn deserialize_u8<V>( self, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Num as Deserializer<'de>>::Error>

where V: Visitor<'de>,

Hint that the Deserialize type is expecting a u8 value.

fn deserialize_u16<V>( self, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Num as Deserializer<'de>>::Error>

where V: Visitor<'de>,

Hint that the Deserialize type is expecting a u16 value.

fn deserialize_u32<V>( self, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Num as Deserializer<'de>>::Error>

where V: Visitor<'de>,

Hint that the Deserialize type is expecting a u32 value.

fn deserialize_u64<V>( self, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Num as Deserializer<'de>>::Error>

where V: Visitor<'de>,

Hint that the Deserialize type is expecting a u64 value.

fn deserialize_i8<V>( self, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Num as Deserializer<'de>>::Error>

where V: Visitor<'de>,

Hint that the Deserialize type is expecting an i8 value.

fn deserialize_i16<V>( self, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Num as Deserializer<'de>>::Error>

where V: Visitor<'de>,

Hint that the Deserialize type is expecting an i16 value.

fn deserialize_i32<V>( self, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Num as Deserializer<'de>>::Error>

where V: Visitor<'de>,

Hint that the Deserialize type is expecting an i32 value.

fn deserialize_i64<V>( self, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Num as Deserializer<'de>>::Error>

where V: Visitor<'de>,

Hint that the Deserialize type is expecting an i64 value.

fn deserialize_f32<V>( self, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Num as Deserializer<'de>>::Error>

where V: Visitor<'de>,

Hint that the Deserialize type is expecting a f32 value.

fn deserialize_f64<V>( self, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Num as Deserializer<'de>>::Error>

where V: Visitor<'de>,

Hint that the Deserialize type is expecting a f64 value.

fn deserialize_char<V>( self, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Num as Deserializer<'de>>::Error>

where V: Visitor<'de>,

Hint that the Deserialize type is expecting a char value.

fn deserialize_str<V>( self, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Num as Deserializer<'de>>::Error>

where V: Visitor<'de>,

Hint that the Deserialize type is expecting a string value and does not benefit from taking ownership of buffered data owned by the Deserializer.

fn deserialize_string<V>( self, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Num as Deserializer<'de>>::Error>

where V: Visitor<'de>,

Hint that the Deserialize type is expecting a string value and would benefit from taking ownership of buffered data owned by the Deserializer.

fn deserialize_seq<V>( self, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Num as Deserializer<'de>>::Error>

where V: Visitor<'de>,

Hint that the Deserialize type is expecting a sequence of values.

fn deserialize_enum<V>( self, name: &'static str, variants: &'static [&'static str], visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Num as Deserializer<'de>>::Error>

where V: Visitor<'de>,

Hint that the Deserialize type is expecting an enum value with a particular name and possible variants.

fn deserialize_bytes<V>( self, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Num as Deserializer<'de>>::Error>

where V: Visitor<'de>,

Hint that the Deserialize type is expecting a byte array and does not benefit from taking ownership of buffered data owned by the Deserializer.

fn deserialize_byte_buf<V>( self, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Num as Deserializer<'de>>::Error>

where V: Visitor<'de>,

Hint that the Deserialize type is expecting a byte array and would benefit from taking ownership of buffered data owned by the Deserializer.

fn deserialize_map<V>( self, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Num as Deserializer<'de>>::Error>

where V: Visitor<'de>,

Hint that the Deserialize type is expecting a map of key-value pairs.

fn deserialize_struct<V>( self, name: &'static str, fields: &'static [&'static str], visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Num as Deserializer<'de>>::Error>

where V: Visitor<'de>,

Hint that the Deserialize type is expecting a struct with a particular name and fields.

fn deserialize_unit<V>( self, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Num as Deserializer<'de>>::Error>

where V: Visitor<'de>,

Hint that the Deserialize type is expecting a unit value.

fn deserialize_newtype_struct<V>( self, name: &'static str, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Num as Deserializer<'de>>::Error>

where V: Visitor<'de>,

Hint that the Deserialize type is expecting a newtype struct with a particular name.

fn deserialize_ignored_any<V>( self, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Num as Deserializer<'de>>::Error>

where V: Visitor<'de>,

Hint that the Deserialize type needs to deserialize a value whose type doesn’t matter because it is ignored.

fn deserialize_unit_struct<V>( self, name: &'static str, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Num as Deserializer<'de>>::Error>

where V: Visitor<'de>,

Hint that the Deserialize type is expecting a unit struct with a particular name.

fn deserialize_tuple_struct<V>( self, name: &'static str, len: usize, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Num as Deserializer<'de>>::Error>

where V: Visitor<'de>,

Hint that the Deserialize type is expecting a tuple struct with a particular name and number of fields.

fn deserialize_tuple<V>( self, len: usize, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Num as Deserializer<'de>>::Error>

where V: Visitor<'de>,

Hint that the Deserialize type is expecting a sequence of values and knows how many values there are without looking at the serialized data.

fn deserialize_option<V>( self, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Num as Deserializer<'de>>::Error>

where V: Visitor<'de>,

Hint that the Deserialize type is expecting an optional value.

fn deserialize_identifier<V>( self, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Num as Deserializer<'de>>::Error>

where V: Visitor<'de>,

Hint that the Deserialize type is expecting the name of a struct field or the discriminant of an enum variant.

fn deserialize_i128<V>( self, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, Self::Error>

where V: Visitor<'de>,

Hint that the Deserialize type is expecting an i128 value.

fn deserialize_u128<V>( self, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, Self::Error>

where V: Visitor<'de>,

Hint that the Deserialize type is expecting an u128 value.

fn is_human_readable(&self) -> bool

Determine whether Deserialize implementations should expect to deserialize their human-readable form.

impl From<Num> for Value

fn from(value: Num) -> Value

Converts to this type from the input type.

impl From<f32> for Num

fn from(value: f32) -> Num

Converts to this type from the input type.

impl From<f64> for Num

fn from(value: f64) -> Num

Converts to this type from the input type.

impl From<i128> for Num

fn from(value: i128) -> Num

Converts to this type from the input type.

impl From<i16> for Num

fn from(value: i16) -> Num

Converts to this type from the input type.

impl From<i32> for Num

fn from(value: i32) -> Num

Converts to this type from the input type.

impl From<i64> for Num

fn from(value: i64) -> Num

Converts to this type from the input type.

impl From<i8> for Num

fn from(value: i8) -> Num

Converts to this type from the input type.

impl From<isize> for Num

fn from(value: isize) -> Num

Converts to this type from the input type.

impl From<u128> for Num

fn from(value: u128) -> Num

Converts to this type from the input type.

impl From<u16> for Num

fn from(value: u16) -> Num

Converts to this type from the input type.

impl From<u32> for Num

fn from(value: u32) -> Num

Converts to this type from the input type.

impl From<u64> for Num

fn from(value: u64) -> Num

Converts to this type from the input type.

impl From<u8> for Num

fn from(value: u8) -> Num

Converts to this type from the input type.

impl From<usize> for Num

fn from(value: usize) -> Num

Converts to this type from the input type.

impl FromStr for Num

type Err = Either<ParseIntError, ParseFloatError>

The associated error which can be returned from parsing.

fn from_str(string: &str) -> Result<Num, <Num as FromStr>::Err>

Parses a string s to return a value of this type.

impl PartialEq for Num

fn eq(&self, other: &Num) -> 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 Serialize for Num

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

where S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for Num