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

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<ConstValue, Global>)

A list of values.

Object(IndexMap<Name, ConstValue, RandomState>)

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

Implementations

Convert this ConstValue into a 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).

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

Returns a copy of the value. Read more
Performs copy-assignment from source. Read more
Formats the value using the given formatter. Read more
Returns the “default value” for a type. Read more
Deserialize this value from the given Serde deserializer. Read more
The error type that can be returned if some error occurs during deserialization. Read more
Require the Deserializer to figure out how to drive the visitor based on what data type is in the input. Read more
Hint that the Deserialize type is expecting a bool value.
Hint that the Deserialize type is expecting an i8 value.
Hint that the Deserialize type is expecting an i16 value.
Hint that the Deserialize type is expecting an i32 value.
Hint that the Deserialize type is expecting an i64 value.
Hint that the Deserialize type is expecting an i128 value. Read more
Hint that the Deserialize type is expecting a u8 value.
Hint that the Deserialize type is expecting a u16 value.
Hint that the Deserialize type is expecting a u32 value.
Hint that the Deserialize type is expecting a u64 value.
Hint that the Deserialize type is expecting an u128 value. Read more
Hint that the Deserialize type is expecting a f32 value.
Hint that the Deserialize type is expecting a f64 value.
Hint that the Deserialize type is expecting a char value.
Hint that the Deserialize type is expecting a string value and does not benefit from taking ownership of buffered data owned by the Deserializer. Read more
Hint that the Deserialize type is expecting a string value and would benefit from taking ownership of buffered data owned by the Deserializer. Read more
Hint that the Deserialize type is expecting a byte array and does not benefit from taking ownership of buffered data owned by the Deserializer. Read more
Hint that the Deserialize type is expecting a byte array and would benefit from taking ownership of buffered data owned by the Deserializer. Read more
Hint that the Deserialize type is expecting a unit value.
Hint that the Deserialize type is expecting a unit struct with a particular name. Read more
Hint that the Deserialize type is expecting a sequence of values.
Hint that the Deserialize type is expecting a sequence of values and knows how many values there are without looking at the serialized data. Read more
Hint that the Deserialize type is expecting a tuple struct with a particular name and number of fields. Read more
Hint that the Deserialize type is expecting a map of key-value pairs.
Hint that the Deserialize type is expecting a struct with a particular name and fields. Read more
Hint that the Deserialize type is expecting the name of a struct field or the discriminant of an enum variant. Read more
Hint that the Deserialize type needs to deserialize a value whose type doesn’t matter because it is ignored. Read more
Hint that the Deserialize type is expecting an optional value. Read more
Hint that the Deserialize type is expecting a newtype struct with a particular name. Read more
Hint that the Deserialize type is expecting an enum value with a particular name and possible variants. Read more
Determine whether Deserialize implementations should expect to deserialize their human-readable form. Read more
Formats the value using the given formatter. Read more
Converts to this type from the input type.
Converts to this type from the input type.
Converts to this type from the input type.
Converts to this type from the input type.
Converts to this type from the input type.
Converts to this type from the input type.
Converts to this type from the input type.
Converts to this type from the input type.
Converts to this type from the input type.
Converts to this type from the input type.
Converts to this type from the input type.
Converts to this type from the input type.
Converts to this type from the input type.
Converts to this type from the input type.
Converts to this type from the input type.
Converts to this type from the input type.
Converts to this type from the input type.
Converts to this type from the input type.
Converts to this type from the input type.
Converts to this type from the input type.
Converts to this type from the input type.
Creates a value from an iterator. Read more
The type of the deserializer being converted into.
Convert this value into a deserializer.
This method tests for self and other values to be equal, and is used by ==. Read more
This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason. Read more
Serialize this value into the given Serde serializer. Read more
The type returned in the event of a conversion error.
Performs the conversion.

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more
Immutably borrows from an owned value. Read more
Mutably borrows from an owned value. Read more
Compare self to key and return true if they are equal.

Returns the argument unchanged.

Attaches the provided Context to this type, returning a WithContext wrapper. Read more
Attaches the current Context to this type, returning a WithContext wrapper. Read more
Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
Instruments this type with the current Span, returning an Instrumented wrapper. Read more
Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
Instruments this type with the current Span, returning an Instrumented wrapper. Read more

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

Should always be Self
The resulting type after obtaining ownership.
Creates owned data from borrowed data, usually by cloning. Read more
Uses borrowed data to replace owned data, usually by cloning. Read more
Converts the given value to a String. Read more
The type returned in the event of a conversion error.
Performs the conversion.
The type returned in the event of a conversion error.
Performs the conversion.
Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more
Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more