Enum Value 

pub enum Value {
    Null,
    Bool(bool),
    Number(f64),
    String(String),
    Array(Vec<Value>),
    Object(Vec<(String, Value)>),
}

A parsed JSON value.

Object members are a Vec rather than a map so that document order survives; dictionaries are small enough that lookup by scan is not worth a BTreeMap’s allocation per object.

Variants

Null

null.

Bool(bool)

true or false.

Number(f64)

Any JSON number, held as f64.

String(String)

A string, with escape sequences already resolved.

Array(Vec<Value>)

An array, in order.

Object(Vec<(String, Value)>)

An object: members in the order they appeared.

Implementations

impl Value

pub fn get(&self, key: &str) -> Option<&Value>

The member named key, if this is an object that has one.

A duplicate key returns the first occurrence, matching the “first wins” reading most JSON tooling settles on.

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

The string, if this is a string.

pub fn as_object(&self) -> Option<&[(String, Value)]>

The members, if this is an object.

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

The elements, if this is an array.

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

The boolean, if this is one.

pub fn is_null(&self) -> bool

True when this is null.

pub fn kind(&self) -> &'static str

The name of this value’s kind, for error messages.

Trait Implementations

impl Clone for Value

fn clone(&self) -> Value

Returns a duplicate 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 PartialEq for Value

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Value