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ExtensionValue

Enum ExtensionValue 

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pub enum ExtensionValue {
    Null,
    Bool(bool),
    UnsignedInteger(u64),
    SignedInteger(i64),
    Float(f64),
    String(String),
    Array(Vec<ExtensionValue>),
    Object(BTreeMap<String, ExtensionValue>),
}
Expand description

Any JSON value, modelled without a JSON dependency.

Used for the members of the wire the reference types leave open: ContextRecord::extensions and ContextRecord::extra.

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Null

JSON null.

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Bool(bool)

JSON true / false.

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UnsignedInteger(u64)

A non-negative integer that fits in a u64.

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SignedInteger(i64)

A negative integer that fits in an i64.

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Float(f64)

A number that is not an integer, or one outside the integer range.

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String(String)

A JSON string.

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Array(Vec<ExtensionValue>)

A JSON array.

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Object(BTreeMap<String, ExtensionValue>)

A JSON object. Sorted by member name; the record hash sorts anyway.

Implementations§

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impl ExtensionValue

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pub fn is_null(&self) -> bool

Whether this is JSON null.

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

The string, if this is a JSON string.

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

The boolean, if this is a JSON boolean.

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pub fn as_f64(&self) -> Option<f64>

The value as an f64, if this is any JSON number. Lossy for integers beyond 2^53, which is why the integer variants exist separately.

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

The elements, if this is a JSON array.

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pub fn as_object(&self) -> Option<&BTreeMap<String, ExtensionValue>>

The members, if this is a JSON object.

Trait Implementations§

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impl Clone for ExtensionValue

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fn clone(&self) -> ExtensionValue

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl Debug for ExtensionValue

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

Formats the value using the given formatter. Read more
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impl<'de> Deserialize<'de> for ExtensionValue

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

Deserialize this value from the given Serde deserializer. Read more
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impl From<&str> for ExtensionValue

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fn from(text: &str) -> Self

Converts to this type from the input type.
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impl From<String> for ExtensionValue

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fn from(text: String) -> Self

Converts to this type from the input type.
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impl PartialEq for ExtensionValue

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

Equality operator ==. Read more
1.0.0 (const: unstable) · Source§

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=. Read more
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impl Serialize for ExtensionValue

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

Serialize this value into the given Serde serializer. Read more
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impl StructuralPartialEq for ExtensionValue

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> DeserializeOwned for T
where T: for<'de> Deserialize<'de>,

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

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

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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = !

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, !>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.