Enum async_graphql_value::ConstValue

[−] Show declaration

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

[−] Expand description

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

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null.

Number(Number)

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A number.

String(String)

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A string.

Boolean(bool)

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A boolean.

Enum(Name)

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An enum. These are typically in SCREAMING_SNAKE_CASE.

List(Vec<ConstValue>)

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A list of values.

Object(BTreeMap<Name, ConstValue>)

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

Implementations

impl ConstValue[−]

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

Convert this ConstValue into a Value.

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 ConstValue[+]

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fn clone(&self) -> ConstValue[−]

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)[−]

Performs copy-assignment from source.

impl Debug for ConstValue[+]

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

Formats the value using the given formatter.

impl Default for ConstValue[+]

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fn default() -> Self[−]

Returns the "default value" for a type.

impl<'de> Deserialize<'de> for ConstValue[+]

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fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error> where
    __D: Deserializer<'de>, [−]

Deserialize this value from the given Serde deserializer.

impl<'de> Deserializer<'de> for ConstValue[+]

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type Error = DeserializerError

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

fn deserialize_any<V>(
    self,
    visitor: V
) -> Result<<V as Visitor<'de>>::Value, Self::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.

fn deserialize_bool<V>(self, visitor: V) -> Result<V::Value, Self::Error> where
    V: Visitor<'de>, [−]

Hint that the Deserialize type is expecting a bool value.

fn deserialize_i8<V>(self, visitor: V) -> Result<V::Value, Self::Error> where
    V: Visitor<'de>, [−]

Hint that the Deserialize type is expecting an i8 value.

fn deserialize_i16<V>(self, visitor: V) -> Result<V::Value, Self::Error> where
    V: Visitor<'de>, [−]

Hint that the Deserialize type is expecting an i16 value.

fn deserialize_i32<V>(self, visitor: V) -> Result<V::Value, Self::Error> where
    V: Visitor<'de>, [−]

Hint that the Deserialize type is expecting an i32 value.

fn deserialize_i64<V>(self, visitor: V) -> Result<V::Value, Self::Error> where
    V: Visitor<'de>, [−]

Hint that the Deserialize type is expecting an i64 value.

fn deserialize_i128<V>(self, visitor: V) -> Result<V::Value, Self::Error> where
    V: Visitor<'de>, [−]

Hint that the Deserialize type is expecting an i128 value.

fn deserialize_u8<V>(self, visitor: V) -> Result<V::Value, Self::Error> where
    V: Visitor<'de>, [−]

Hint that the Deserialize type is expecting a u8 value.

fn deserialize_u16<V>(self, visitor: V) -> Result<V::Value, Self::Error> where
    V: Visitor<'de>, [−]

Hint that the Deserialize type is expecting a u16 value.

fn deserialize_u32<V>(self, visitor: V) -> Result<V::Value, Self::Error> where
    V: Visitor<'de>, [−]

Hint that the Deserialize type is expecting a u32 value.

fn deserialize_u64<V>(self, visitor: V) -> Result<V::Value, Self::Error> where
    V: Visitor<'de>, [−]

Hint that the Deserialize type is expecting a u64 value.

fn deserialize_u128<V>(self, visitor: V) -> Result<V::Value, Self::Error> where
    V: Visitor<'de>, [−]

Hint that the Deserialize type is expecting an u128 value.

fn deserialize_f32<V>(self, visitor: V) -> Result<V::Value, Self::Error> where
    V: Visitor<'de>, [−]

Hint that the Deserialize type is expecting a f32 value.

fn deserialize_f64<V>(self, visitor: V) -> Result<V::Value, Self::Error> where
    V: Visitor<'de>, [−]

Hint that the Deserialize type is expecting a f64 value.

fn deserialize_char<V>(self, visitor: V) -> Result<V::Value, Self::Error> where
    V: Visitor<'de>, [−]

Hint that the Deserialize type is expecting a char value.

fn deserialize_str<V>(self, visitor: V) -> Result<V::Value, Self::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.

fn deserialize_string<V>(self, visitor: V) -> Result<V::Value, Self::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.

fn deserialize_bytes<V>(self, visitor: V) -> Result<V::Value, Self::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.

fn deserialize_byte_buf<V>(self, visitor: V) -> Result<V::Value, Self::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.

fn deserialize_unit<V>(self, visitor: V) -> Result<V::Value, Self::Error> where
    V: Visitor<'de>, [−]

Hint that the Deserialize type is expecting a unit value.

fn deserialize_unit_struct<V>(
    self,
    name: &'static str,
    visitor: V
) -> Result<V::Value, Self::Error> where
    V: Visitor<'de>, [−]

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

fn deserialize_seq<V>(self, visitor: V) -> Result<V::Value, Self::Error> where
    V: Visitor<'de>, [−]

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

fn deserialize_tuple<V>(
    self,
    len: usize,
    visitor: V
) -> Result<V::Value, Self::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.

fn deserialize_tuple_struct<V>(
    self,
    name: &'static str,
    len: usize,
    visitor: V
) -> Result<V::Value, Self::Error> where
    V: Visitor<'de>, [−]

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

fn deserialize_map<V>(self, visitor: V) -> Result<V::Value, Self::Error> where
    V: Visitor<'de>, [−]

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

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

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

fn deserialize_identifier<V>(self, visitor: V) -> Result<V::Value, Self::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.

fn deserialize_ignored_any<V>(self, visitor: V) -> Result<V::Value, Self::Error> where
    V: Visitor<'de>, [−]

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

fn deserialize_option<V>(
    self,
    visitor: V
) -> Result<<V as Visitor<'de>>::Value, Self::Error> where
    V: Visitor<'de>, [−]

Hint that the Deserialize type is expecting an optional value.

fn deserialize_newtype_struct<V>(
    self,
    _name: &'static str,
    visitor: V
) -> Result<<V as Visitor<'de>>::Value, Self::Error> where
    V: Visitor<'de>, [−]

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

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

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

fn is_human_readable(&self) -> bool[−]

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

impl Display for ConstValue[+]

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

Formats the value using the given formatter.

impl Eq for ConstValue

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

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fn from(f: &'a [T]) -> Self[−]

Performs the conversion.

impl<'a> From<&'a str> for ConstValue[+]

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fn from(value: &'a str) -> Self[−]

Performs the conversion.

impl From<()> for ConstValue[+]

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fn from((): ()) -> Self[−]

Performs the conversion.

impl From<BTreeMap<Name, ConstValue>> for ConstValue[+]

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fn from(f: BTreeMap<Name, ConstValue>) -> Self[−]

Performs the conversion.

impl From<ConstValue> for Value[+]

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fn from(value: ConstValue) -> Self[−]

Performs the conversion.

impl<'a> From<Cow<'a, str>> for ConstValue[+]

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fn from(f: Cow<'a, str>) -> Self[−]

Performs the conversion.

impl From<String> for ConstValue[+]

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fn from(value: String) -> Self[−]

Performs the conversion.

impl<T: Into<ConstValue>> From<Vec<T>> for ConstValue[+]

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fn from(f: Vec<T>) -> Self[−]

Performs the conversion.

impl From<bool> for ConstValue[+]

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fn from(value: bool) -> Self[−]

Performs the conversion.

impl From<f32> for ConstValue[+]

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fn from(f: f32) -> Self[−]

Performs the conversion.

impl From<f64> for ConstValue[+]

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fn from(f: f64) -> Self[−]

Performs the conversion.

impl From<i16> for ConstValue[+]

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fn from(n: i16) -> Self[−]

Performs the conversion.

impl From<i32> for ConstValue[+]

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fn from(n: i32) -> Self[−]

Performs the conversion.

impl From<i64> for ConstValue[+]

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fn from(n: i64) -> Self[−]

Performs the conversion.

impl From<i8> for ConstValue[+]

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fn from(n: i8) -> Self[−]

Performs the conversion.

impl From<isize> for ConstValue[+]

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fn from(n: isize) -> Self[−]

Performs the conversion.

impl From<u16> for ConstValue[+]

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fn from(n: u16) -> Self[−]

Performs the conversion.

impl From<u32> for ConstValue[+]

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fn from(n: u32) -> Self[−]

Performs the conversion.

impl From<u64> for ConstValue[+]

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fn from(n: u64) -> Self[−]

Performs the conversion.

impl From<u8> for ConstValue[+]

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fn from(n: u8) -> Self[−]

Performs the conversion.

impl From<usize> for ConstValue[+]

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fn from(n: usize) -> Self[−]

Performs the conversion.

impl<T: Into<ConstValue>> FromIterator<T> for ConstValue[+]

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fn from_iter<I: IntoIterator<Item = T>>(iter: I) -> Self[−]

Creates a value from an iterator.

impl<'de> IntoDeserializer<'de, DeserializerError> for ConstValue[+]

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type Deserializer = Self

The type of the deserializer being converted into.

fn into_deserializer(self) -> Self::Deserializer[−]

Convert this value into a deserializer.

impl PartialEq<ConstValue> for ConstValue[+]

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fn eq(&self, other: &ConstValue) -> bool[−]

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

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

This method tests for !=.

impl Serialize for ConstValue[+]

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fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error> where
    __S: Serializer, [−]

Serialize this value into the given Serde serializer.

impl StructuralEq for ConstValue

impl TryFrom<ConstValue> for Value[+]

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type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: ConstValue) -> Result<Self, Self::Error>[−]

Performs the conversion.

impl TryFrom<Value> for ConstValue[+]

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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.