Enum ValueRef

pub enum ValueRef<'a> {
    Null,
    String(&'a str),
    Number(NumberRef<'a>),
    Bool(bool),
    Array(ArrayRef<'a>),
    Object(ObjectRef<'a>),
}

A reference to a JSON value.

Variants

Null

Represents a JSON null value.

String(&'a str)

Represents a JSON string.

Number(NumberRef<'a>)

Represents a JSON number.

Bool(bool)

Represents a JSON boolean.

Array(ArrayRef<'a>)

Represents a JSON array.

Object(ObjectRef<'a>)

Represents a JSON object.

Implementations

impl<'a> ValueRef<'a>

pub fn from_bytes(bytes: &[u8]) -> ValueRef<'_>

Creates a ValueRef from a byte slice.

pub fn is_null(self) -> bool

Returns true if the value is a null. Returns false otherwise.

pub fn is_boolean(self) -> bool

Returns true if the value is a boolean. Returns false otherwise.

pub fn is_number(self) -> bool

Returns true if the value is a number. Returns false otherwise.

pub fn is_u64(self) -> bool

Returns true if the value is an integer between zero and u64::MAX.

pub fn is_i64(self) -> bool

Returns true if the value is an integer between i64::MIN and i64::MAX.

pub fn is_f64(self) -> bool

Returns true if the value is a number that can be represented by f64.

pub fn is_string(self) -> bool

Returns true if the value is a string. Returns false otherwise.

pub fn is_array(self) -> bool

Returns true if the value is an array. Returns false otherwise.

pub fn is_object(self) -> bool

Returns true if the value is an object. Returns false otherwise.

pub fn as_null(self) -> Option<()>

If the value is null, returns (). Returns None otherwise.

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

If the value is a boolean, returns the associated bool. Returns None otherwise.

pub fn as_number(self) -> Option<NumberRef<'a>>

If the value is a number, returns the associated number. Returns None otherwise.

pub fn as_u64(self) -> Option<u64>

If the value is an integer, returns the associated u64. Returns None otherwise.

pub fn as_i64(self) -> Option<i64>

If the value is an integer, returns the associated i64. Returns None otherwise.

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

If the value is a float, returns the associated f64. Returns None otherwise.

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

If the value is a string, returns the associated str. Returns None otherwise.

pub fn as_array(self) -> Option<ArrayRef<'a>>

If the value is an array, returns the associated array. Returns None otherwise.

pub fn as_object(self) -> Option<ObjectRef<'a>>

If the value is an object, returns the associated map. Returns None otherwise.

pub fn to_owned(self) -> Value

Creates owned Value from ValueRef.

pub fn capacity(self) -> usize

Returns the capacity to store this value, in bytes.

pub fn get(self, index: impl Index) -> Option<ValueRef<'a>>

Index into a JSON array or object. A string index can be used to access a value in an object, and a usize index can be used to access an element of an array.

pub fn pointer(self, pointer: &str) -> Option<Self>

Looks up a value by a JSON Pointer.

Trait Implementations

impl<'a> Clone for ValueRef<'a>

fn clone(&self) -> ValueRef<'a>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ValueRef<'_>

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

Formats the value using the given formatter.

impl Display for ValueRef<'_>

Display a JSON value as a string.

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

Formats the value using the given formatter.

impl From<ValueRef<'_>> for Value

fn from(v: ValueRef<'_>) -> Self

Converts to this type from the input type.

impl From<ValueRef<'_>> for Value

Build a serde_json::Value from a jsonbb node.

fn from(value: ValueRef<'_>) -> Self

Converts to this type from the input type.

impl<'a> Hash for ValueRef<'a>

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<'a> Ord for ValueRef<'a>

fn cmp(&self, other: &ValueRef<'a>) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq<&str> for ValueRef<'_>

fn eq(&self, other: &&str) -> 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 PartialEq<String> for ValueRef<'_>

fn eq(&self, other: &String) -> 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 PartialEq<ValueRef<'_>> for &str

fn eq(&self, other: &ValueRef<'_>) -> 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 PartialEq<ValueRef<'_>> for String

fn eq(&self, other: &ValueRef<'_>) -> 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 PartialEq<ValueRef<'_>> for str

fn eq(&self, other: &ValueRef<'_>) -> 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 PartialEq<bool> for ValueRef<'_>

fn eq(&self, other: &bool) -> 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 PartialEq<f32> for ValueRef<'_>

fn eq(&self, other: &f32) -> 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 PartialEq<f64> for ValueRef<'_>

fn eq(&self, other: &f64) -> 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 PartialEq<i16> for ValueRef<'_>

fn eq(&self, other: &i16) -> 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 PartialEq<i32> for ValueRef<'_>

fn eq(&self, other: &i32) -> 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 PartialEq<i64> for ValueRef<'_>

fn eq(&self, other: &i64) -> 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 PartialEq<i8> for ValueRef<'_>

fn eq(&self, other: &i8) -> 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 PartialEq<isize> for ValueRef<'_>

fn eq(&self, other: &isize) -> 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 PartialEq<str> for ValueRef<'_>

fn eq(&self, other: &str) -> 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 PartialEq<u16> for ValueRef<'_>

fn eq(&self, other: &u16) -> 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 PartialEq<u32> for ValueRef<'_>

fn eq(&self, other: &u32) -> 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 PartialEq<u64> for ValueRef<'_>

fn eq(&self, other: &u64) -> 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 PartialEq<u8> for ValueRef<'_>

fn eq(&self, other: &u8) -> 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 PartialEq<usize> for ValueRef<'_>

fn eq(&self, other: &usize) -> 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<'a> PartialEq for ValueRef<'a>

fn eq(&self, other: &ValueRef<'a>) -> 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<'a> PartialOrd for ValueRef<'a>

fn partial_cmp(&self, other: &ValueRef<'a>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for ValueRef<'_>

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

where S: Serializer,

Serialize this value into the given Serde serializer.

impl<'a> Copy for ValueRef<'a>

impl<'a> Eq for ValueRef<'a>

impl<'a> StructuralPartialEq for ValueRef<'a>