Enum Value

pub enum Value {
    Number(i64),
    Bool(bool),
    Float(f64),
    Nil,
    String(String),
    Array(Vec<Value>),
    Map(IndexMap<String, Value>),
}

Represents a data value as input or output to an expr program

Variants

Number(i64)

Bool(bool)

Float(f64)

Nil

String(String)

Array(Vec<Value>)

Map(IndexMap<String, Value>)

Implementations

impl Value

pub fn as_bool(&self) -> Option<bool>

pub fn as_number(&self) -> Option<i64>

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

pub fn as_string(&self) -> Option<&str>

pub fn as_array(&self) -> Option<&[Value]>

pub fn as_map(&self) -> Option<&IndexMap<String, Value>>

pub fn is_nil(&self) -> bool

Trait Implementations

impl AsRef<Value> for Value

fn as_ref(&self) -> &Value

Converts this type into a shared reference of the (usually inferred) input type.

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 Default for Value

fn default() -> Value

Returns the “default value” for a type.

impl Display for Value

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

Formats the value using the given formatter.

impl From<&String> for Value

fn from(s: &String) -> Self

Converts to this type from the input type.

impl From<&str> for Value

fn from(s: &str) -> Self

Converts to this type from the input type.

impl From<IndexMap<String, Value>> for Value

fn from(m: IndexMap<String, Value>) -> Self

Converts to this type from the input type.

impl From<Pair<'_, Rule>> for Value

fn from(pair: Pair<'_, Rule>) -> Self

Converts to this type from the input type.

impl From<Pairs<'_, Rule>> for Value

fn from(pairs: Pairs<'_, Rule>) -> Self

Converts to this type from the input type.

impl From<String> for Value

fn from(s: String) -> Self

Converts to this type from the input type.

impl<V: Into<Value>> From<Vec<V>> for Value

fn from(a: Vec<V>) -> 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<f64> for Value

fn from(f: f64) -> Self

Converts to this type from the input type.

impl From<i32> for Value

fn from(n: i32) -> Self

Converts to this type from the input type.

impl From<i64> for Value

fn from(n: i64) -> Self

Converts to this type from the input type.

impl From<usize> for Value

fn from(n: usize) -> Self

Converts to this type from the input type.

impl<K, V> FromIterator<(K, V)> for Value

where K: Into<String>, V: Into<Value>,

fn from_iter<I>(iter: I) -> Self

where I: IntoIterator<Item = (K, V)>,

Creates a value from an iterator.

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 StructuralPartialEq for Value