Enum Value

pub enum Value {
    Variable(Name),
    Null,
    Number(Number),
    String(String),
    Boolean(bool),
    Binary(Bytes),
    Enum(Name),
    List(Vec<Value>),
    Object(IndexMap<Name, Value>),
}

A GraphQL value, for example 1, $name or "Hello World!". This is ConstValue with variables.

It can be serialized and deserialized. Enums will be converted to strings. Attempting to serialize Upload or Variable will fail, and Enum, Upload and Variable cannot be deserialized.

Reference.

Variants

Variable(Name)

A variable, without the $.

Null

null.

Number(Number)

A number.

String(String)

A string.

Boolean(bool)

A boolean.

Binary(Bytes)

A binary.

Enum(Name)

An enum. These are typically in SCREAMING_SNAKE_CASE.

List(Vec<Value>)

A list of values.

Object(IndexMap<Name, Value>)

An object. This is a map of keys to values.

Implementations

impl Value

pub fn into_const_with<E>( self, f: impl FnMut(Name) -> Result<ConstValue, E>, ) -> Result<ConstValue, E>

Attempt to convert the value into a const value by using a function to get a variable.

pub fn into_const(self) -> Option<ConstValue>

Attempt to convert the value into a const value.

Will fail if the value contains variables.

pub fn into_json(self) -> Result<Value>

Attempt to convert the value into JSON. This is equivalent to the TryFrom implementation.

Errors

Fails if serialization fails (see enum docs for more info).

pub fn from_json(json: Value) -> Result<Self>

Attempt to convert JSON into a value. This is equivalent to the TryFrom implementation.

Errors

Fails if deserialization fails (see enum docs for more info).

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() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Value

fn deserialize<D: Deserializer<'de>>(deserializer: D) -> Result<Self, D::Error>

Deserialize this value from the given Serde deserializer.

impl Display for Value

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

Formats the value using the given formatter.

impl From<ConstValue> for Value

fn from(value: ConstValue) -> Self

Converts to this type from the input type.

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 Serialize for Value

fn serialize<S: Serializer>(&self, serializer: S) -> Result<S::Ok, S::Error>

Serialize this value into the given Serde serializer.

impl TryFrom<Value> for Value

type Error = Error

The type returned in the event of a conversion error.

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

Performs the conversion.

impl TryFrom<Value> for Value

type Error = Error

The type returned in the event of a conversion error.

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

Performs the conversion.

impl Eq for Value

impl StructuralPartialEq for Value