# [−][src]Enum rustc_serialize::json::Json

    pub enum Json {
        I64(i64),
        U64(u64),
        F64(f64),
        String(String),
        Boolean(bool),
        Array(Array),
        Object(Object),
        Null,
    }

Represents a json value

## Variants

`I64(i64)`
`U64(u64)`
`F64(f64)`
`String(String)`
`Boolean(bool)`
`Array(Array)`
`Object(Object)`
`Null`

## Methods

### `impl Json`[src]

#### `pub fn from_reader(rdr: &mut dyn Read) -> Result<Self, BuilderError>`[src]

Decodes a json value from an `&mut io::Read`

#### `pub fn from_str(s: &str) -> Result<Self, BuilderError>`[src]

Decodes a json value from a string

#### `pub fn pretty(&self) -> PrettyJson`[src]

Borrow this json object as a pretty object to generate a pretty representation for it via `Display`.

#### `pub fn find<'a>(&'a self, key: &str) -> Option<&'a Json>`[src]

If the Json value is an Object, returns the value associated with the provided key. Otherwise, returns None.

#### `pub fn find_path<'a>(&'a self, keys: &[&str]) -> Option<&'a Json>`[src]

Attempts to get a nested Json Object for each key in `keys`. If any key is found not to exist, find_path will return None. Otherwise, it will return the Json value associated with the final key.

#### `pub fn search<'a>(&'a self, key: &str) -> Option<&'a Json>`[src]

If the Json value is an Object, performs a depth-first search until a value associated with the provided key is found. If no value is found or the Json value is not an Object, returns None.

#### `pub fn is_object<'a>(&'a self) -> bool`[src]

Returns true if the Json value is an Object. Returns false otherwise.

#### `pub fn as_object<'a>(&'a self) -> Option<&'a Object>`[src]

If the Json value is an Object, returns a reference to the associated BTreeMap. Returns None otherwise.

#### `pub fn as_object_mut<'a>(&'a mut self) -> Option<&'a mut Object>`[src]

If the Json value is an Object, returns a mutable reference to the associated BTreeMap. Returns None otherwise.

#### `pub fn into_object(self) -> Option<Object>`[src]

If the Json value is an Object, returns the associated BTreeMap. Returns None otherwise.

#### `pub fn is_array<'a>(&'a self) -> bool`[src]

Returns true if the Json value is an Array. Returns false otherwise.

#### `pub fn as_array<'a>(&'a self) -> Option<&'a Array>`[src]

If the Json value is an Array, returns a reference to the associated vector. Returns None otherwise.

#### `pub fn as_array_mut<'a>(&'a mut self) -> Option<&'a mut Array>`[src]

If the Json value is an Array, returns a mutable reference to the associated vector. Returns None otherwise.

#### `pub fn into_array(self) -> Option<Array>`[src]

If the Json value is an Array, returns the associated vector. Returns None otherwise.

#### `pub fn is_string<'a>(&'a self) -> bool`[src]

Returns true if the Json value is a String. Returns false otherwise.

#### `pub fn as_string<'a>(&'a self) -> Option<&'a str>`[src]

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

#### `pub fn is_number(&self) -> bool`[src]

Returns true if the Json value is a Number. Returns false otherwise.

#### `pub fn is_i64(&self) -> bool`[src]

Returns true if the Json value is a i64. Returns false otherwise.

#### `pub fn is_u64(&self) -> bool`[src]

Returns true if the Json value is a u64. Returns false otherwise.

#### `pub fn is_f64(&self) -> bool`[src]

Returns true if the Json value is a f64. Returns false otherwise.

#### `pub fn as_i64(&self) -> Option<i64>`[src]

If the Json value is a number, return or cast it to a i64. Returns None otherwise.

#### `pub fn as_u64(&self) -> Option<u64>`[src]

If the Json value is a number, return or cast it to a u64. Returns None otherwise.

#### `pub fn as_f64(&self) -> Option<f64>`[src]

If the Json value is a number, return or cast it to a f64. Returns None otherwise.

#### `pub fn is_boolean(&self) -> bool`[src]

Returns true if the Json value is a Boolean. Returns false otherwise.

#### `pub fn as_boolean(&self) -> Option<bool>`[src]

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

#### `pub fn is_null(&self) -> bool`[src]

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

#### `pub fn as_null(&self) -> Option<()>`[src]

If the Json value is a Null, returns (). Returns None otherwise.

## Trait Implementations

### `impl Encodable for Json`[src]

#### `fn encode<S: Encoder>(&self, e: &mut S) -> Result<(), S::Error>`[src]

Serialize a value using an `Encoder`.

### `impl ToJson for Json`[src]

#### `fn to_json(&self) -> Json`[src]

Converts the value of `self` to an instance of JSON

### `impl Clone for Json`[src]

#### `fn clone(&self) -> Json`[src]

Returns a copy of the value. Read more

#### `fn clone_from(&mut self, source: &Self)`1.0.0[src]

Performs copy-assignment from `source`. Read more

### `impl PartialOrd<Json> for Json`[src]

#### `fn partial_cmp(&self, other: &Json) -> Option<Ordering>`[src]

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

#### `fn lt(&self, other: &Json) -> bool`[src]

This method tests less than (for `self` and `other`) and is used by the `<` operator. Read more

#### `fn le(&self, other: &Json) -> bool`[src]

This method tests less than or equal to (for `self` and `other`) and is used by the `<=` operator. Read more

#### `fn gt(&self, other: &Json) -> bool`[src]

This method tests greater than (for `self` and `other`) and is used by the `>` operator. Read more

#### `fn ge(&self, other: &Json) -> bool`[src]

This method tests greater than or equal to (for `self` and `other`) and is used by the `>=` operator. Read more

### `impl PartialEq<Json> for Json`[src]

#### `fn eq(&self, other: &Json) -> bool`[src]

This method tests for `self` and `other` values to be equal, and is used by `==`. Read more

#### `fn ne(&self, other: &Json) -> bool`[src]

This method tests for `!=`.

### `impl<'a> Index<&'a str> for Json`[src]

#### `type Output = Json`

The returned type after indexing.

#### `fn index(&self, idx: &str) -> &Json`[src]

Performs the indexing (`container[index]`) operation.

### `impl Index<usize> for Json`[src]

#### `type Output = Json`

The returned type after indexing.

#### `fn index<'a>(&'a self, idx: usize) -> &'a Json`[src]

Performs the indexing (`container[index]`) operation.

### `impl Debug for Json`[src]

#### `fn fmt(&self, f: &mut Formatter) -> Result`[src]

Formats the value using the given formatter. Read more

### `impl Display for Json`[src]

#### `fn fmt(&self, f: &mut Formatter) -> Result`[src]

Encodes a json value into a string

### `impl FromStr for Json`[src]

#### `type Err = ParserError`

The associated error which can be returned from parsing.

#### `fn from_str(s: &str) -> Result<Json, ParserError>`[src]

Parses a string `s` to return a value of this type. Read more

## Auto Trait Implementations

### `impl Send for Json`

### `impl Unpin for Json`

### `impl Sync for Json`

### `impl UnwindSafe for Json`

### `impl RefUnwindSafe for Json`

## Blanket Implementations

### `impl<T> ToOwned for T where
T: Clone,` [src]

#### `type Owned = T`

The resulting type after obtaining ownership.

#### `fn to_owned(&self) -> T`[src]

Creates owned data from borrowed data, usually by cloning. Read more

#### `fn clone_into(&self, target: &mut T)`[src]

🔬 This is a nightly-only experimental API. (`toowned_clone_into`)

recently added

Uses borrowed data to replace owned data, usually by cloning. Read more

### `impl<T, U> Into<U> for T where
U: From<T>,` [src]

#### `fn into(self) -> U`[src]

Performs the conversion.

### `impl<T> From<T> for T`[src]

#### `fn from(t: T) -> T`[src]

Performs the conversion.

### `impl<T> ToString for T where
T: Display + ?Sized,` [src]

#### `default fn to_string(&self) -> String`[src]

Converts the given value to a `String`. Read more

### `impl<T, U> TryFrom<U> for T where
U: Into<T>,` [src]

#### `type Error = Infallible`

The type returned in the event of a conversion error.

#### `fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>`[src]

Performs the conversion.

### `impl<T, U> TryInto<U> for T where
U: TryFrom<T>,` [src]

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

The type returned in the event of a conversion error.

#### `fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>`[src]

Performs the conversion.

### `impl<T> BorrowMut<T> for T where
T: ?Sized,` [src]

#### `fn borrow_mut(&mut self) -> &mut T`[src]

Mutably borrows from an owned value. Read more

### `impl<T> Borrow<T> for T where
T: ?Sized,` [src]

#### `fn borrow(&self) -> &T`[src]

Immutably borrows from an owned value. Read more

### `impl<T> Any for T where
T: 'static + ?Sized,` [src]

#### `fn type_id(&self) -> TypeId`[src]

Gets the `TypeId` of `self`. Read more

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