Enum async_graphql::Value

pub enum Value {
    Null,
    Number(Number),
    String(String),
    Boolean(bool),
    Enum(Name),
    List(Vec<ConstValue, Global>),
    Object(BTreeMap<Name, ConstValue>),
}

A resolved GraphQL value, for example 1 or "Hello World!".

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

Reference.

Variants

Null

null.

Number(Number)

A number.

String(String)

A string.

Boolean(bool)

A boolean.

Enum(Name)

An enum. These are typically in SCREAMING_SNAKE_CASE.

List(Vec<ConstValue, Global>)

A list of values.

Object(BTreeMap<Name, ConstValue>)

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

Implementations

impl ConstValue

#[must_use]pub fn into_value(self) -> Value

Convert this ConstValue into a Value.

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

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<ConstValue, Error>

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 ConstValue

pub fn clone(&self) -> ConstValue

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ConstValue

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

Formats the value using the given formatter.

impl Default for ConstValue

pub fn default() -> ConstValue

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for ConstValue

pub fn deserialize<__D>(
    __deserializer: __D
) -> Result<ConstValue, <__D as Deserializer<'de>>::Error> where
    __D: Deserializer<'de>, 

Deserialize this value from the given Serde deserializer.

impl<'de> Deserializer<'de> for ConstValue

type Error = DeserializerError

The error type that can be returned if some error occurs during deserialization.

pub fn deserialize_any<V>(
    self,
    visitor: V
) -> Result<<V as Visitor<'de>>::Value, <ConstValue as Deserializer<'de>>::Error> where
    V: Visitor<'de>, 

Require the Deserializer to figure out how to drive the visitor based on what data type is in the input.

pub fn deserialize_bool<V>(
    self,
    visitor: V
) -> Result<<V as Visitor<'de>>::Value, <ConstValue as Deserializer<'de>>::Error> where
    V: Visitor<'de>, 

Hint that the Deserialize type is expecting a bool value.

pub fn deserialize_i8<V>(
    self,
    visitor: V
) -> Result<<V as Visitor<'de>>::Value, <ConstValue as Deserializer<'de>>::Error> where
    V: Visitor<'de>, 

Hint that the Deserialize type is expecting an i8 value.

pub fn deserialize_i16<V>(
    self,
    visitor: V
) -> Result<<V as Visitor<'de>>::Value, <ConstValue as Deserializer<'de>>::Error> where
    V: Visitor<'de>, 

Hint that the Deserialize type is expecting an i16 value.

pub fn deserialize_i32<V>(
    self,
    visitor: V
) -> Result<<V as Visitor<'de>>::Value, <ConstValue as Deserializer<'de>>::Error> where
    V: Visitor<'de>, 

Hint that the Deserialize type is expecting an i32 value.

pub fn deserialize_i64<V>(
    self,
    visitor: V
) -> Result<<V as Visitor<'de>>::Value, <ConstValue as Deserializer<'de>>::Error> where
    V: Visitor<'de>, 

Hint that the Deserialize type is expecting an i64 value.

pub fn deserialize_i128<V>(
    self,
    visitor: V
) -> Result<<V as Visitor<'de>>::Value, <ConstValue as Deserializer<'de>>::Error> where
    V: Visitor<'de>, 

Hint that the Deserialize type is expecting an i128 value.

pub fn deserialize_u8<V>(
    self,
    visitor: V
) -> Result<<V as Visitor<'de>>::Value, <ConstValue as Deserializer<'de>>::Error> where
    V: Visitor<'de>, 

Hint that the Deserialize type is expecting a u8 value.

pub fn deserialize_u16<V>(
    self,
    visitor: V
) -> Result<<V as Visitor<'de>>::Value, <ConstValue as Deserializer<'de>>::Error> where
    V: Visitor<'de>, 

Hint that the Deserialize type is expecting a u16 value.

pub fn deserialize_u32<V>(
    self,
    visitor: V
) -> Result<<V as Visitor<'de>>::Value, <ConstValue as Deserializer<'de>>::Error> where
    V: Visitor<'de>, 

Hint that the Deserialize type is expecting a u32 value.

pub fn deserialize_u64<V>(
    self,
    visitor: V
) -> Result<<V as Visitor<'de>>::Value, <ConstValue as Deserializer<'de>>::Error> where
    V: Visitor<'de>, 

Hint that the Deserialize type is expecting a u64 value.

pub fn deserialize_u128<V>(
    self,
    visitor: V
) -> Result<<V as Visitor<'de>>::Value, <ConstValue as Deserializer<'de>>::Error> where
    V: Visitor<'de>, 

Hint that the Deserialize type is expecting an u128 value.

pub fn deserialize_f32<V>(
    self,
    visitor: V
) -> Result<<V as Visitor<'de>>::Value, <ConstValue as Deserializer<'de>>::Error> where
    V: Visitor<'de>, 

Hint that the Deserialize type is expecting a f32 value.

pub fn deserialize_f64<V>(
    self,
    visitor: V
) -> Result<<V as Visitor<'de>>::Value, <ConstValue as Deserializer<'de>>::Error> where
    V: Visitor<'de>, 

Hint that the Deserialize type is expecting a f64 value.

pub fn deserialize_char<V>(
    self,
    visitor: V
) -> Result<<V as Visitor<'de>>::Value, <ConstValue as Deserializer<'de>>::Error> where
    V: Visitor<'de>, 

Hint that the Deserialize type is expecting a char value.

pub fn deserialize_str<V>(
    self,
    visitor: V
) -> Result<<V as Visitor<'de>>::Value, <ConstValue as Deserializer<'de>>::Error> where
    V: Visitor<'de>, 

Hint that the Deserialize type is expecting a string value and does not benefit from taking ownership of buffered data owned by the Deserializer.

pub fn deserialize_string<V>(
    self,
    visitor: V
) -> Result<<V as Visitor<'de>>::Value, <ConstValue as Deserializer<'de>>::Error> where
    V: Visitor<'de>, 

Hint that the Deserialize type is expecting a string value and would benefit from taking ownership of buffered data owned by the Deserializer.

pub fn deserialize_bytes<V>(
    self,
    visitor: V
) -> Result<<V as Visitor<'de>>::Value, <ConstValue as Deserializer<'de>>::Error> where
    V: Visitor<'de>, 

Hint that the Deserialize type is expecting a byte array and does not benefit from taking ownership of buffered data owned by the Deserializer.

pub fn deserialize_byte_buf<V>(
    self,
    visitor: V
) -> Result<<V as Visitor<'de>>::Value, <ConstValue as Deserializer<'de>>::Error> where
    V: Visitor<'de>, 

Hint that the Deserialize type is expecting a byte array and would benefit from taking ownership of buffered data owned by the Deserializer.

pub fn deserialize_unit<V>(
    self,
    visitor: V
) -> Result<<V as Visitor<'de>>::Value, <ConstValue as Deserializer<'de>>::Error> where
    V: Visitor<'de>, 

Hint that the Deserialize type is expecting a unit value.

pub fn deserialize_unit_struct<V>(
    self,
    name: &'static str,
    visitor: V
) -> Result<<V as Visitor<'de>>::Value, <ConstValue as Deserializer<'de>>::Error> where
    V: Visitor<'de>, 

Hint that the Deserialize type is expecting a unit struct with a particular name.

pub fn deserialize_seq<V>(
    self,
    visitor: V
) -> Result<<V as Visitor<'de>>::Value, <ConstValue as Deserializer<'de>>::Error> where
    V: Visitor<'de>, 

Hint that the Deserialize type is expecting a sequence of values.

pub fn deserialize_tuple<V>(
    self,
    len: usize,
    visitor: V
) -> Result<<V as Visitor<'de>>::Value, <ConstValue as Deserializer<'de>>::Error> where
    V: Visitor<'de>, 

Hint that the Deserialize type is expecting a sequence of values and knows how many values there are without looking at the serialized data.

pub fn deserialize_tuple_struct<V>(
    self,
    name: &'static str,
    len: usize,
    visitor: V
) -> Result<<V as Visitor<'de>>::Value, <ConstValue as Deserializer<'de>>::Error> where
    V: Visitor<'de>, 

Hint that the Deserialize type is expecting a tuple struct with a particular name and number of fields.

pub fn deserialize_map<V>(
    self,
    visitor: V
) -> Result<<V as Visitor<'de>>::Value, <ConstValue as Deserializer<'de>>::Error> where
    V: Visitor<'de>, 

Hint that the Deserialize type is expecting a map of key-value pairs.

pub fn deserialize_struct<V>(
    self,
    name: &'static str,
    fields: &'static [&'static str],
    visitor: V
) -> Result<<V as Visitor<'de>>::Value, <ConstValue as Deserializer<'de>>::Error> where
    V: Visitor<'de>, 

Hint that the Deserialize type is expecting a struct with a particular name and fields.

pub fn deserialize_identifier<V>(
    self,
    visitor: V
) -> Result<<V as Visitor<'de>>::Value, <ConstValue as Deserializer<'de>>::Error> where
    V: Visitor<'de>, 

Hint that the Deserialize type is expecting the name of a struct field or the discriminant of an enum variant.

pub fn deserialize_ignored_any<V>(
    self,
    visitor: V
) -> Result<<V as Visitor<'de>>::Value, <ConstValue as Deserializer<'de>>::Error> where
    V: Visitor<'de>, 

Hint that the Deserialize type needs to deserialize a value whose type doesn’t matter because it is ignored.

pub fn deserialize_option<V>(
    self,
    visitor: V
) -> Result<<V as Visitor<'de>>::Value, <ConstValue as Deserializer<'de>>::Error> where
    V: Visitor<'de>, 

Hint that the Deserialize type is expecting an optional value.

pub fn deserialize_newtype_struct<V>(
    self,
    _name: &'static str,
    visitor: V
) -> Result<<V as Visitor<'de>>::Value, <ConstValue as Deserializer<'de>>::Error> where
    V: Visitor<'de>, 

Hint that the Deserialize type is expecting a newtype struct with a particular name.

pub fn deserialize_enum<V>(
    self,
    _name: &'static str,
    _variants: &'static [&'static str],
    visitor: V
) -> Result<<V as Visitor<'de>>::Value, <ConstValue as Deserializer<'de>>::Error> where
    V: Visitor<'de>, 

Hint that the Deserialize type is expecting an enum value with a particular name and possible variants.

pub fn is_human_readable(&self) -> bool

Determine whether Deserialize implementations should expect to deserialize their human-readable form.

impl Display for ConstValue

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

Formats the value using the given formatter.

impl Eq for ConstValue

impl<'a, T> From<&'a [T]> for ConstValue where
    T: Clone + Into<ConstValue>, 

pub fn from(f: &'a [T]) -> ConstValue

Performs the conversion.

impl<'a> From<&'a str> for ConstValue

pub fn from(value: &'a str) -> ConstValue

Performs the conversion.

impl From<()> for ConstValue

pub fn from(()) -> ConstValue

Performs the conversion.

impl From<BTreeMap<Name, ConstValue>> for ConstValue

pub fn from(f: BTreeMap<Name, ConstValue>) -> ConstValue

Performs the conversion.

impl<'a> From<Cow<'a, str>> for ConstValue

pub fn from(f: Cow<'a, str>) -> ConstValue

Performs the conversion.

impl From<String> for ConstValue

pub fn from(value: String) -> ConstValue

Performs the conversion.

impl From<Variables> for ConstValue

pub fn from(variables: Variables) -> ConstValue

Performs the conversion.

impl<T> From<Vec<T, Global>> for ConstValue where
    T: Into<ConstValue>, 

pub fn from(f: Vec<T, Global>) -> ConstValue

Performs the conversion.

impl From<bool> for ConstValue

pub fn from(value: bool) -> ConstValue

Performs the conversion.

impl From<f32> for ConstValue

pub fn from(f: f32) -> ConstValue

Performs the conversion.

impl From<f64> for ConstValue

pub fn from(f: f64) -> ConstValue

Performs the conversion.

impl From<i16> for ConstValue

pub fn from(n: i16) -> ConstValue

Performs the conversion.

impl From<i32> for ConstValue

pub fn from(n: i32) -> ConstValue

Performs the conversion.

impl From<i64> for ConstValue

pub fn from(n: i64) -> ConstValue

Performs the conversion.

impl From<i8> for ConstValue

pub fn from(n: i8) -> ConstValue

Performs the conversion.

impl From<isize> for ConstValue

pub fn from(n: isize) -> ConstValue

Performs the conversion.

impl From<u16> for ConstValue

pub fn from(n: u16) -> ConstValue

Performs the conversion.

impl From<u32> for ConstValue

pub fn from(n: u32) -> ConstValue

Performs the conversion.

impl From<u64> for ConstValue

pub fn from(n: u64) -> ConstValue

Performs the conversion.

impl From<u8> for ConstValue

pub fn from(n: u8) -> ConstValue

Performs the conversion.

impl From<usize> for ConstValue

pub fn from(n: usize) -> ConstValue

Performs the conversion.

impl<T> FromIterator<T> for ConstValue where
    T: Into<ConstValue>, 

pub fn from_iter<I>(iter: I) -> ConstValue where
    I: IntoIterator<Item = T>, 

Creates a value from an iterator.

impl<'de> IntoDeserializer<'de, DeserializerError> for ConstValue

type Deserializer = ConstValue

The type of the deserializer being converted into.

pub fn into_deserializer(
    self
) -> <ConstValue as IntoDeserializer<'de, DeserializerError>>::Deserializer

Convert this value into a deserializer.

impl PartialEq<ConstValue> for ConstValue

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

This method tests for self and other values to be equal, and is used by ==.

#[must_use]pub fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl Serialize for ConstValue

pub fn serialize<__S>(
    &self,
    __serializer: __S
) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error> where
    __S: Serializer, 

Serialize this value into the given Serde serializer.

impl StructuralEq for ConstValue

impl TryFrom<Value> for ConstValue

type Error = Error

The type returned in the event of a conversion error.

pub fn try_from(
    value: Value
) -> Result<ConstValue, <ConstValue as TryFrom<Value>>::Error>

Performs the conversion.