Enum json::JsonValue

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pub enum JsonValue {
    String(String),
    Number(f64),
    Boolean(bool),
    Null,
    Object(BTreeMap<String, JsonValue>),
    Array(Vec<JsonValue>),
}

Variants§

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Array(Vec<JsonValue>)

Implementations§

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impl JsonValue

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pub fn new_object() -> JsonValue

Create an empty JsonValue::Object instance. When creating an object with data, consider using the object! macro.

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pub fn new_array() -> JsonValue

Create an empty JsonValue::Array instance. When creating array with data, consider using the array! macro.

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pub fn is_string(&self) -> bool

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pub fn is_number(&self) -> bool

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pub fn is_boolean(&self) -> bool

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pub fn is_null(&self) -> bool

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pub fn is_object(&self) -> bool

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pub fn is_array(&self) -> bool

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pub fn is_empty(&self) -> bool

Checks whether the value is empty. Returns true for:

empty string ("")
number 0
boolean false
null
empty array (array![])
empty object (object!{})

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

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

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

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

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

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pub fn as_u16(&self) -> Option<u16>

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pub fn as_u8(&self) -> Option<u8>

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pub fn as_usize(&self) -> Option<usize>

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

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

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pub fn as_i16(&self) -> Option<i16>

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pub fn as_i8(&self) -> Option<i8>

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pub fn as_isize(&self) -> Option<isize>

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

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pub fn push<T>(&mut self, value: T) -> JsonResult<()>
where T: Into<JsonValue>,

Works on JsonValue::Array - pushes a new value to the array.

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pub fn pop(&mut self) -> JsonValue

Works on JsonValue::Array - remove and return last element from an array. On failure returns a null.

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pub fn contains<T>(&self, item: T) -> bool
where T: Into<JsonValue>,

Works on JsonValue::Array - checks if the array contains a value

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pub fn len(&self) -> usize

Returns length of array or object (number of keys), defaults to 0 for other types.

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pub fn members(&self) -> Members<'_> ⓘ

Works on JsonValue::Array - returns an iterator over members.

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pub fn members_mut(&mut self) -> MembersMut<'_> ⓘ

Works on JsonValue::Array - returns a mutable iterator over members.

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pub fn entries(&self) -> Entries<'_> ⓘ

Works on JsonValue::Object - returns an iterator over key value pairs.

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pub fn entries_mut(&mut self) -> EntriesMut<'_> ⓘ

Works on JsonValue::Object - returns a mutable iterator over key value pairs.

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pub fn remove(&mut self, key: &str) -> JsonValue

Works on JsonValue::Object - remove a key and return the value it held. If the key was not present, the method is called on anything but an object, it will return a null.

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pub fn clear(&mut self)

When called on an array or an object, will wipe them clean. When called on a string will clear the string. Numbers and booleans become null.

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impl JsonValue

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pub fn dump(&self) -> String

Prints out the value as JSON string.

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pub fn pretty(&self, spaces: u16) -> String

Pretty prints out the value as JSON string. Takes an argument that’s number of spaces to indent new blocks with.

Trait Implementations§

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impl Clone for JsonValue

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fn clone(&self) -> JsonValue

Returns a copy of the value. Read more

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

Performs copy-assignment from source. Read more

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impl Debug for JsonValue

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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 Display for JsonValue

Implements formatting

let data = json::parse(r#"{"url":"https://github.com/"}"#).unwrap();
println!("{}", data);
println!("{:#}", data);

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

Formats the value using the given formatter. Read more

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