Enum JsonValue 

pub enum JsonValue {
    Null,
    Bool(bool),
    Number(JsonNumber),
    String(String),
    Array(Vec<JsonValue>),
    Object(JsonObject),
}

An owned JSON value.

JSON has exactly six value kinds, so this enum is intentionally exhaustive — you can match it without a wildcard arm.

Variants

Null

null.

Bool(bool)

true or false.

Number(JsonNumber)

A number, preserving its exact source text.

String(String)

A string (decoded Unicode scalar values).

Array(Vec<JsonValue>)

An array.

Object(JsonObject)

An object with unique keys in insertion order.

Implementations

impl JsonValue

pub fn str_as<'a, T>(&'a self) -> Result<T, JsonExtractError>

where T: TryFrom<&'a str, Error = PrimitiveError>,

Reads this value as a string-backed primitive T, validating it through T’s TryFrom<&str> constructor.

Returns JsonExtractErrorKind::WrongType if this is not a JSON string, or JsonExtractErrorKind::Invalid if it fails validation. The error path is the document root ($); use JsonObject::get_str_as when the value lives under a key so the error points at that field.

impl JsonValue

pub fn is_null(&self) -> bool

Returns true if this is JsonValue::Null.

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

Returns the boolean if this is a JsonValue::Bool.

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

Returns the number if this is a JsonValue::Number.

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

Returns the string if this is a JsonValue::String.

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

Returns the array if this is a JsonValue::Array.

pub fn as_object(&self) -> Option<&JsonObject>

Returns the object if this is a JsonValue::Object.

Trait Implementations

impl Clone for JsonValue

fn clone(&self) -> JsonValue

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for JsonValue

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

Formats the value using the given formatter.

impl PartialEq for JsonValue

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