Struct linera_base::data_types::Amount

pub struct Amount(/* private fields */);

A non-negative amount of tokens.

This is a fixed-point fraction, with Amount::DECIMAL_PLACES digits after the point. Amount::ONE is one whole token, divisible into 10.pow(Amount::DECIMAL_PLACES) parts.

Implementations

impl Amount

pub const ZERO: Self = _

pub const MAX: Self = _

pub fn try_add(self, other: Self) -> Result<Self, ArithmeticError>

pub fn try_add_one(self) -> Result<Self, ArithmeticError>

pub fn saturating_add(self, other: Self) -> Self

pub fn try_sub(self, other: Self) -> Result<Self, ArithmeticError>

pub fn try_sub_one(self) -> Result<Self, ArithmeticError>

pub fn saturating_sub(self, other: Self) -> Self

pub fn try_add_assign(&mut self, other: Self) -> Result<(), ArithmeticError>

pub fn try_add_assign_one(&mut self) -> Result<(), ArithmeticError>

pub fn saturating_add_assign(&mut self, other: Self)

pub fn try_sub_assign(&mut self, other: Self) -> Result<(), ArithmeticError>

pub fn saturating_mul(&self, other: u128) -> Self

pub fn try_mul(self, other: u128) -> Result<Self, ArithmeticError>

pub fn try_mul_assign(&mut self, other: u128) -> Result<(), ArithmeticError>

impl Amount

pub const DECIMAL_PLACES: u8 = 18u8

pub const ONE: Amount = _

pub fn from_tokens(tokens: u128) -> Amount

Returns an Amount corresponding to that many tokens, or Amount::MAX if saturated.

pub fn from_milli(millitokens: u128) -> Amount

Returns an Amount corresponding to that many millitokens, or Amount::MAX if saturated.

pub fn from_atto(attotokens: u128) -> Amount

Returns an Amount corresponding to that many attotokens.

pub fn upper_half(self) -> u64

Helper function to obtain the 64 most significant bits of the balance.

pub fn lower_half(self) -> u64

Helper function to obtain the 64 least significant bits of the balance.

pub fn saturating_div(self, other: Amount) -> u128

Divides this by the other amount. If the other is 0, it returns u128::MAX.

Trait Implementations

impl Clone for Amount

fn clone(&self) -> Amount

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Amount

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

Formats the value using the given formatter.

impl Default for Amount

fn default() -> Amount

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Amount

fn deserialize<D: Deserializer<'de>>(deserializer: D) -> Result<Self, D::Error>

Deserialize this value from the given Serde deserializer.

impl Display for Amount

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

Formats the value using the given formatter.

impl From<Amount> for u128

fn from(value: Amount) -> Self

Converts to this type from the input type.

impl FromStr for Amount

type Err = ParseAmountError

The associated error which can be returned from parsing.

fn from_str(src: &str) -> Result<Self, Self::Err>

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

impl Hash for Amount

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl InputType for Amount

type RawValueType = Amount

The raw type used for validator.

fn type_name() -> Cow<'static, str>

Type the name.

fn create_type_info(registry: &mut Registry) -> String

Create type information in the registry and return qualified typename.

fn parse(value: Option<Value>) -> InputValueResult<Self>

Parse from Value. None represents undefined.

fn to_value(&self) -> Value

Convert to a Value for introspection.

fn as_raw_value(&self) -> Option<&Self::RawValueType>

Returns a reference to the raw value.

fn qualified_type_name() -> String

Qualified typename.

impl Ord for Amount

fn cmp(&self, other: &Amount) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Selfwhere Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Selfwhere Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Selfwhere Self: Sized + PartialOrd,

Restrict a value to a certain interval.

impl OutputType for Amount

fn type_name() -> Cow<'static, str>

Type the name.

fn create_type_info(registry: &mut Registry) -> String

Create type information in the registry and return qualified typename.

fn resolve<'life0, 'life1, 'life2, 'life3, 'async_trait>( &'life0 self, _: &'life1 ContextSelectionSet<'life2>, _field: &'life3 Positioned<Field> ) -> Pin<Box<dyn Future<Output = ServerResult<Value>> + Send + 'async_trait>>where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait, 'life3: 'async_trait,

Resolve an output value to async_graphql::Value.

fn qualified_type_name() -> String

Qualified typename.

fn introspection_type_name(&self) -> Cow<'static, str>

Introspection type name

impl PartialEq for Amount

fn eq(&self, other: &Amount) -> bool

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

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for Amount

fn partial_cmp(&self, other: &Amount) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl ScalarType for Amount

fn parse(value: Value) -> InputValueResult<Self>

Parse a scalar value.

fn to_value(&self) -> Value

Convert the scalar to Value.

fn is_valid(_value: &ConstValue) -> bool

Checks for a valid scalar value.

impl Serialize for Amount

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

Serialize this value into the given Serde serializer.

impl<'a> Sum<&'a Amount> for Amount

fn sum<I: Iterator<Item = &'a Self>>(iter: I) -> Self

Method which takes an iterator and generates Self from the elements by “summing up” the items.

impl Copy for Amount

impl Eq for Amount

impl StructuralEq for Amount

impl StructuralPartialEq for Amount