Enum achan::Value

pub enum Value {
    Null,
    Boolean(bool),
    Number(f64),
    String(String),
    List(Vec<Value>),
    Map(BTreeMap<String, Value>),
}

Represents any value.

Variants

Null

Represents the absence of a value.

Boolean(bool)

Represents true or false.

Number(f64)

Represents any number.

String(String)

Represents any string of characters.

List(Vec<Value>)

Represents any sequence of values.

Map(BTreeMap<String, Value>)

Represents any mapping from strings to values.

Implementations

impl Value

pub fn is_null(&self) -> bool

Returns true if this Value represents a null value.

pub fn is_boolean(&self) -> bool

Returns true if this Value represents a boolean.

pub fn is_number(&self) -> bool

Returns true if this Value represents a number.

pub fn is_string(&self) -> bool

Returns true if this Value represents a string.

pub fn is_list(&self) -> bool

Returns true if this Value represents a list.

pub fn is_map(&self) -> bool

Returns true if this Value represents a map.

impl Value

pub fn as_null(&self) -> Option<()>

Returns Some if this Value represents a null value, otherwise returns None.

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

Returns the underlying boolean, if that’s what this Value represents.

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

Returns the underlying number, if that’s what this Value represents.

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

Returns a reference to the underlying string, if that’s what this Value represents.

pub fn as_slice(&self) -> Option<&[Self]>

Returns a reference to the underlying list, if that’s what this Value represents.

pub fn as_map(&self) -> Option<&BTreeMap<String, Self>>

Returns a reference to the underlying map, if that’s what this Value represents.

impl Value

pub fn into_string(self) -> Result<String, Self>

If the Value represented a string it is returned in the Ok result, else the Value is preserved in the Err result.

pub fn into_list(self) -> Result<Vec<Self>, Self>

If the Value represented a list it is returned in the Ok result, else the Value is preserved in the Err result.

pub fn into_map(self) -> Result<BTreeMap<String, Self>, Self>

If the Value represented a map it is returned in the Ok result, else the Value is preserved in the Err result.

Trait Implementations

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

Display a Value as a string.

For simplicity, the JSON string representation is chosen.

impl<K: Clone + Into<String>, V: Clone + Into<Value>> From<&[(K, V)]> for Value

fn from(value: &[(K, V)]) -> Self

Converts to this type from the input type.

impl<V: Clone + Into<Value>> From<&[V]> for Value

fn from(value: &[V]) -> 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<()> for Value

fn from(_: ()) -> Self

Converts to this type from the input type.

impl<V: Into<Value>> From<BTreeMap<String, V>> for Value

fn from(value: BTreeMap<String, V>) -> Self

Converts to this type from the input type.

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

fn from(value: Option<V>) -> 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<V: Into<Value>> From<Vec<V>> for Value

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

Converts to this type from the input type.

impl From<bool> for Value

fn from(value: bool) -> Self

Converts to this type from the input type.

impl From<f32> for Value

fn from(value: f32) -> Self

Converts to this type from the input type.

impl From<f64> for Value

fn from(value: f64) -> Self

Converts to this type from the input type.

impl From<i16> for Value

fn from(value: i16) -> Self

Converts to this type from the input type.

impl From<i32> for Value

fn from(value: i32) -> Self

Converts to this type from the input type.

impl From<i64> for Value

fn from(value: i64) -> Self

Converts to this type from the input type.

impl From<i8> for Value

fn from(value: i8) -> Self

Converts to this type from the input type.

impl From<isize> for Value

fn from(value: isize) -> Self

Converts to this type from the input type.

impl From<u16> for Value

fn from(value: u16) -> Self

Converts to this type from the input type.

impl From<u32> for Value

fn from(value: u32) -> Self

Converts to this type from the input type.

impl From<u64> for Value

fn from(value: u64) -> Self

Converts to this type from the input type.

impl From<u8> for Value

fn from(value: u8) -> 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<K: Into<String>, V: Into<Value>> FromIterator<(K, V)> for Value

fn from_iter<T: IntoIterator<Item = (K, V)>>(iter: T) -> Self

Creates a value from an iterator.

impl<V: Into<Value>> FromIterator<V> for Value

fn from_iter<T: IntoIterator<Item = V>>(iter: T) -> Self

Creates a value from an iterator.

impl PartialEq for Value

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

fn partial_cmp(&self, other: &Value) -> 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 StructuralPartialEq for Value