Enum Value

pub enum Value<NumericTypes: EvalexprNumericTypes = DefaultNumericTypes> {
    String(String),
    Float(NumericTypes::Float),
    Int(NumericTypes::Int),
    Boolean(bool),
    Tuple(TupleType<NumericTypes>),
    Empty,
}

The value type used by the parser. Values can be of different subtypes that are the variants of this enum.

Variants

String(String)

A string value.

Float(NumericTypes::Float)

A float value.

Int(NumericTypes::Int)

An integer value.

Boolean(bool)

A boolean value.

Tuple(TupleType<NumericTypes>)

A tuple value.

Empty

An empty value.

Implementations

impl<NumericTypes: EvalexprNumericTypes> Value<NumericTypes>

pub fn is_string(&self) -> bool

Returns true if self is a Value::String.

pub fn is_int(&self) -> bool

Returns true if self is a Value::Int.

pub fn is_float(&self) -> bool

Returns true if self is a Value::Float.

pub fn is_number(&self) -> bool

Returns true if self is a Value::Int or Value::Float.

pub fn is_boolean(&self) -> bool

Returns true if self is a Value::Boolean.

pub fn is_tuple(&self) -> bool

Returns true if self is a Value::Tuple.

pub fn is_empty(&self) -> bool

Returns true if self is a Value::Empty.

pub fn as_string(&self) -> EvalexprResult<String, NumericTypes>

Clones the value stored in self as String, or returns Err if self is not a Value::String.

pub fn as_int(&self) -> EvalexprResult<NumericTypes::Int, NumericTypes>

Clones the value stored in self as IntType, or returns Err if self is not a Value::Int.

pub fn as_float(&self) -> EvalexprResult<NumericTypes::Float, NumericTypes>

Clones the value stored in self as FloatType, or returns Err if self is not a Value::Float.

pub fn as_number(&self) -> EvalexprResult<NumericTypes::Float, NumericTypes>

Clones the value stored in self as FloatType, or returns Err if self is not a Value::Float or Value::Int. Note that this method silently converts IntType to FloatType, if self is a Value::Int.

pub fn as_boolean(&self) -> EvalexprResult<bool, NumericTypes>

Clones the value stored in self as bool, or returns Err if self is not a Value::Boolean.

pub fn as_tuple(&self) -> EvalexprResult<TupleType<NumericTypes>, NumericTypes>

Clones the value stored in self as TupleType, or returns Err if self is not a Value::Tuple.

pub fn as_fixed_len_tuple( &self, len: usize, ) -> EvalexprResult<TupleType<NumericTypes>, NumericTypes>

Clones the value stored in self as TupleType or returns Err if self is not a Value::Tuple of the required length.

pub fn as_ranged_len_tuple( &self, range: RangeInclusive<usize>, ) -> EvalexprResult<TupleType<NumericTypes>, NumericTypes>

Clones the value stored in self as TupleType or returns Err if self is not a Value::Tuple with length in the required range.

pub fn as_empty(&self) -> EvalexprResult<(), NumericTypes>

Returns (), or returnsErr if self is not a Value::Tuple.

pub fn str_from(&self) -> String

Returns a string for the str::from built-in function.

pub fn from_float(float: NumericTypes::Float) -> Self

Create a new Value from its corresponding raw float type.

pub fn from_int(int: NumericTypes::Int) -> Self

Create a new Value from its corresponding raw int type.

Trait Implementations

impl<NumericTypes: Clone + EvalexprNumericTypes> Clone for Value<NumericTypes>

where NumericTypes::Float: Clone, NumericTypes::Int: Clone,

fn clone(&self) -> Value<NumericTypes>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<NumericTypes: Debug + EvalexprNumericTypes> Debug for Value<NumericTypes>

where NumericTypes::Float: Debug, NumericTypes::Int: Debug,

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

Formats the value using the given formatter.

impl<NumericTypes: EvalexprNumericTypes> Display for Value<NumericTypes>

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

Formats the value using the given formatter.

impl<NumericTypes: EvalexprNumericTypes> From<&&mut Value<NumericTypes>> for ValueType

fn from(value: &&mut Value<NumericTypes>) -> Self

Converts to this type from the input type.

impl<NumericTypes: EvalexprNumericTypes> From<&Value<NumericTypes>> for ValueType

fn from(value: &Value<NumericTypes>) -> Self

Converts to this type from the input type.

impl<NumericTypes: EvalexprNumericTypes> From<&mut Value<NumericTypes>> for ValueType

fn from(value: &mut Value<NumericTypes>) -> Self

Converts to this type from the input type.

impl<NumericTypes: EvalexprNumericTypes> From<&str> for Value<NumericTypes>

fn from(string: &str) -> Self

Converts to this type from the input type.

impl<NumericTypes: EvalexprNumericTypes> From<()> for Value<NumericTypes>

fn from(_: ()) -> Self

Converts to this type from the input type.

impl<NumericTypes: EvalexprNumericTypes> From<String> for Value<NumericTypes>

fn from(string: String) -> Self

Converts to this type from the input type.

impl<NumericTypes: EvalexprNumericTypes> From<Value<NumericTypes>> for EvalexprResultValue<NumericTypes>

fn from(value: Value<NumericTypes>) -> Self

Converts to this type from the input type.

impl<NumericTypes: EvalexprNumericTypes> From<Vec<Value<NumericTypes>>> for Value<NumericTypes>

fn from(tuple: TupleType<NumericTypes>) -> Self

Converts to this type from the input type.

impl<NumericTypes: EvalexprNumericTypes> From<bool> for Value<NumericTypes>

fn from(boolean: bool) -> Self

Converts to this type from the input type.

impl<NumericTypes: PartialEq + EvalexprNumericTypes> PartialEq for Value<NumericTypes>

where NumericTypes::Float: PartialEq, NumericTypes::Int: PartialEq,

fn eq(&self, other: &Value<NumericTypes>) -> 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<NumericTypes: EvalexprNumericTypes> TryFrom<Value<NumericTypes>> for ()

type Error = EvalexprError<NumericTypes>

The type returned in the event of a conversion error.

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

Performs the conversion.

impl<NumericTypes: EvalexprNumericTypes> TryFrom<Value<NumericTypes>> for String

type Error = EvalexprError<NumericTypes>

The type returned in the event of a conversion error.

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

Performs the conversion.

impl<NumericTypes: EvalexprNumericTypes> TryFrom<Value<NumericTypes>> for TupleType<NumericTypes>

type Error = EvalexprError<NumericTypes>

The type returned in the event of a conversion error.

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

Performs the conversion.

impl<NumericTypes: EvalexprNumericTypes> TryFrom<Value<NumericTypes>> for bool

type Error = EvalexprError<NumericTypes>

The type returned in the event of a conversion error.

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

Performs the conversion.

impl<NumericTypes: EvalexprNumericTypes> StructuralPartialEq for Value<NumericTypes>