Enum ValueRef

pub enum ValueRef<'a, T: Json> {
    Null,
    Boolean(bool),
    Number(&'a T::Number),
    String(&'a T::String),
    Array(&'a T::Array),
    Object(&'a T::Object),
}

JSON value reference.

Variants

Null

Boolean(bool)

Number(&'a T::Number)

String(&'a T::String)

Array(&'a T::Array)

Object(&'a T::Object)

Implementations

impl<'a, T: Json> ValueRef<'a, T>

pub fn is_null(&self) -> bool

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

pub fn is_bool(&self) -> bool

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

For any value on which is_boolean returns true, as_bool is guaranteed to return the boolean value.

pub fn is_number(&self) -> bool

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

For any value on which is_number returns true, as_number is guaranteed to return the number value.

pub fn as_u32(&self) -> Option<u32>

Returns this number as an u32 if it can be exactly represented as such.

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

Returns this number as an u64 if it can be exactly represented as such.

pub fn as_i32(&self) -> Option<i32>

Returns this number as an i32 if it can be exactly represented as such.

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

Returns this number as an i64 if it can be exactly represented as such.

pub fn as_f32(&self) -> Option<f32>

Returns this number as an f32 if it can be exactly represented as such.

pub fn as_f32_lossy(&self) -> Option<f32>

Returns this number as an f32 if it is a number, potentially losing precision in the process.

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

Returns this number as an f64 if it can be exactly represented as such.

pub fn as_f64_lossy(&self) -> Option<f64>

Returns this number as an f64 if it is a number, potentially losing precision in the process.

pub fn is_string(&self) -> bool

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

For any value on which is_string returns true, as_str is guaranteed to return the string value.

pub fn is_array(&self) -> bool

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

For any value on which is_array returns true, as_array is guaranteed to return the array value.

pub fn is_object(&self) -> bool

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

For any value on which is_object returns true, as_object is guaranteed to return the object value.

impl<'a, T: Json> ValueRef<'a, T>

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<&'a T::Number>

If the value is a number, returns a reference to it. Returns None otherwise.

pub fn as_string(&self) -> Option<&'a T::String>

If the value is a string, returns a reference to it. Returns None otherwise.

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

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

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

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

pub fn as_array(&self) -> Option<&'a T::Array>

If the value is an array, returns a reference to it. Returns None otherwise.

pub fn as_object(&self) -> Option<&'a T::Object>

If the value is an object, returns a reference to it. Returns None otherwise.

pub fn cloned(&self) -> Value<T>

where T::Number: Clone, T::String: Clone, T::Array: Clone, T::Object: Clone,

Creates a new value by cloning the referenced value.