Enum Value

pub enum Value {
    None,
    Bool(bool),
    Unsigned(u64),
    Signed(i64),
    Float(NotNan<f64>),
    Tuple(Box<[Value]>),
    Str(Box<str>),
    Bytes(Box<[u8]>),
    Decimal(Decimal),
}

The general type for holding all kinds of values.

Variants

None

Expresses the absence of a value.

Bool(bool)

A boolean value.

Unsigned(u64)

An unsigned integer with 64 bits.

Signed(i64)

A signed integer with 64 bits.

Float(NotNan<f64>)

A double-precision floating-point number that is not NaN.

Tuple(Box<[Value]>)

A tuple of Values.

The nested values can be of different type.

Str(Box<str>)

A string that must be utf-8 encoded.

Bytes(Box<[u8]>)

A slice of bytes.

Decimal(Decimal)

A signed fixed-point number

Implementations

impl Value

pub fn try_from_bytes( source: &[u8], ty: &Type, ) -> Result<Value, ValueConvertError>

Returns the interpreted values of an byte representation, if possible:

Arguments

• ‘source’ - A byte slice that holds the value
• ‘ty’ - the type of the interpretation

pub fn and_then(self, other: Value) -> Value

Returns self if self is not Value::None and other otherwise

pub fn from_int(ty: &Type, val: i64) -> Value

Returns the value for the given type.

pub fn for_int(&self, val: i64) -> Value

Returns the value in the same variant as self.

Trait Implementations

impl Add for Value

type Output = Value

The resulting type after applying the + operator.

fn add(self, other: Value) -> Value

Performs the + operation.

impl AddAssign for Value

fn add_assign(&mut self, rhs: Self)

Performs the += operation.

impl BitAnd for Value

type Output = Value

The resulting type after applying the & operator.

fn bitand(self, other: Value) -> Value

Performs the & operation.

impl BitOr for Value

type Output = Value

The resulting type after applying the | operator.

fn bitor(self, other: Value) -> Value

Performs the | operation.

impl BitXor for Value

type Output = Value

The resulting type after applying the ^ operator.

fn bitxor(self, other: Value) -> Value

Performs the ^ operation.

impl Clone for Value

fn clone(&self) -> Value

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Value

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

Formats the value using the given formatter.

impl Display for Value

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

Formats the value using the given formatter.

impl Div for Value

type Output = Value

The resulting type after applying the / operator.

fn div(self, other: Value) -> Value

Performs the / operation.

impl DivAssign for Value

fn div_assign(&mut self, rhs: Self)

Performs the /= operation.

impl From<&[u8]> for Value

fn from(value: &[u8]) -> Self

Converts to this type from the input type.

impl From<&str> for Value

fn from(value: &str) -> Self

Converts to this type from the input type.

impl From<Decimal> for Value

fn from(value: Decimal) -> Self

Converts to this type from the input type.

impl<T: Into<Value>> From<Option<T>> for Value

fn from(value: Option<T>) -> Self

Converts to this type from the input type.

impl From<String> for Value

fn from(value: String) -> Self

Converts to this type from the input type.

impl From<Vec<u8>> for Value

fn from(value: Vec<u8>) -> Self

Converts to this type from the input type.

impl From<bool> for Value

fn from(b: bool) -> Self

Converts to this type from the input type.

impl From<i16> for Value

fn from(i: i16) -> Self

Converts to this type from the input type.

impl From<i32> for Value

fn from(i: i32) -> Self

Converts to this type from the input type.

impl From<i64> for Value

fn from(i: i64) -> Self

Converts to this type from the input type.

impl From<u16> for Value

fn from(u: u16) -> Self

Converts to this type from the input type.

impl From<u32> for Value

fn from(u: u32) -> Self

Converts to this type from the input type.

impl From<u64> for Value

fn from(u: u64) -> Self

Converts to this type from the input type.

impl From<usize> for Value

fn from(value: usize) -> Self

Converts to this type from the input type.

impl Hash for Value

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 Mul for Value

type Output = Value

The resulting type after applying the * operator.

fn mul(self, other: Value) -> Value

Performs the * operation.

impl MulAssign for Value

fn mul_assign(&mut self, rhs: Self)

Performs the *= operation.

impl Neg for Value

type Output = Value

The resulting type after applying the - operator.

fn neg(self) -> Value

Performs the unary - operation.

impl Not for Value

type Output = Value

The resulting type after applying the ! operator.

fn not(self) -> Value

Performs the unary ! operation.

impl Ord for Value

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

This method returns an Ordering between self and other.

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

where Self: Sized,

Compares and returns the maximum of two values.

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

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Value

fn eq(&self, other: &Value) -> 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 PartialOrd for Value

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

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

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

Tests less than (for self and other) and is used by the < operator.

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

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

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

Tests greater than (for self and other) and is used by the > operator.

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

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

impl Rem for Value

type Output = Value

The resulting type after applying the % operator.

fn rem(self, other: Value) -> Value

Performs the % operation.

impl RemAssign for Value

fn rem_assign(&mut self, rhs: Self)

Performs the %= operation.

impl Shl for Value

type Output = Value

The resulting type after applying the << operator.

fn shl(self, other: Value) -> Value

Performs the << operation.

impl Shr for Value

type Output = Value

The resulting type after applying the >> operator.

fn shr(self, other: Value) -> Value

Performs the >> operation.

impl Sub for Value

type Output = Value

The resulting type after applying the - operator.

fn sub(self, other: Value) -> Value

Performs the - operation.

impl SubAssign for Value

fn sub_assign(&mut self, rhs: Self)

Performs the -= operation.

impl TryFrom<f32> for Value

type Error = ValueConvertError

The type returned in the event of a conversion error.

fn try_from(value: f32) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<f64> for Value

type Error = ValueConvertError

The type returned in the event of a conversion error.

fn try_from(value: f64) -> Result<Self, Self::Error>

Performs the conversion.

impl TryInto<Box<[Value]>> for Value

type Error = ValueConvertError

The type returned in the event of a conversion error.

fn try_into(self) -> Result<Box<[Value]>, Self::Error>

Performs the conversion.

impl TryInto<Box<[u8]>> for Value

type Error = ValueConvertError

The type returned in the event of a conversion error.

fn try_into(self) -> Result<Box<[u8]>, Self::Error>

Performs the conversion.

impl TryInto<Box<str>> for Value

type Error = ValueConvertError

The type returned in the event of a conversion error.

fn try_into(self) -> Result<Box<str>, Self::Error>

Performs the conversion.

impl TryInto<Decimal> for Value

type Error = ValueConvertError

The type returned in the event of a conversion error.

fn try_into(self) -> Result<Decimal, Self::Error>

Performs the conversion.

impl TryInto<String> for Value

type Error = ValueConvertError

The type returned in the event of a conversion error.

fn try_into(self) -> Result<String, Self::Error>

Performs the conversion.

impl TryInto<Vec<Value>> for Value

type Error = ValueConvertError

The type returned in the event of a conversion error.

fn try_into(self) -> Result<Vec<Value>, Self::Error>

Performs the conversion.

impl TryInto<Vec<u8>> for Value

type Error = ValueConvertError

The type returned in the event of a conversion error.

fn try_into(self) -> Result<Vec<u8>, Self::Error>

Performs the conversion.

impl TryInto<bool> for Value

type Error = ValueConvertError

The type returned in the event of a conversion error.

fn try_into(self) -> Result<bool, Self::Error>

Performs the conversion.

impl TryInto<f64> for Value

type Error = ValueConvertError

The type returned in the event of a conversion error.

fn try_into(self) -> Result<f64, Self::Error>

Performs the conversion.

impl TryInto<i64> for Value

type Error = ValueConvertError

The type returned in the event of a conversion error.

fn try_into(self) -> Result<i64, Self::Error>

Performs the conversion.

impl TryInto<u64> for Value

type Error = ValueConvertError

The type returned in the event of a conversion error.

fn try_into(self) -> Result<u64, Self::Error>

Performs the conversion.

impl Eq for Value

impl StructuralPartialEq for Value