Enum rustc_serialize::json::Json
[−]
[src]
pub enum Json {
I64(i64),
U64(u64),
F64(f64),
String(String),
Boolean(bool),
Array(Array),
Object(Object),
Null,
}Represents a json value
Variants
I64 | ||
U64 | ||
F64 | ||
String | ||
Boolean | ||
Array | ||
Object | ||
Null |
Methods
impl Json
fn from_reader(rdr: &mut Read) -> Result<Self, BuilderError>
Decodes a json value from an &mut io::Read
fn from_str(s: &str) -> Result<Self, BuilderError>
Decodes a json value from a string
fn pretty(&self) -> PrettyJson
Borrow this json object as a pretty object to generate a pretty
representation for it via Display.
fn find<'a>(&'a self, key: &str) -> Option<&'a Json>
If the Json value is an Object, returns the value associated with the provided key. Otherwise, returns None.
fn find_path<'a>(&'a self, keys: &[&str]) -> Option<&'a Json>
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.
fn search<'a>(&'a self, key: &str) -> Option<&'a Json>
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.
fn is_object<'a>(&'a self) -> bool
Returns true if the Json value is an Object. Returns false otherwise.
fn as_object<'a>(&'a self) -> Option<&'a Object>
If the Json value is an Object, returns the associated BTreeMap. Returns None otherwise.
fn as_object_mut<'a>(&'a mut self) -> Option<&'a mut Object>
If the Json value is an Object, returns the associated mutable BTreeMap. Returns None otherwise.
fn is_array<'a>(&'a self) -> bool
Returns true if the Json value is an Array. Returns false otherwise.
fn as_array<'a>(&'a self) -> Option<&'a Array>
If the Json value is an Array, returns the associated vector. Returns None otherwise.
fn as_array_mut<'a>(&'a mut self) -> Option<&'a mut Array>
If the Json value is an Array, returns the associated mutable vector. Returns None otherwise.
fn is_string<'a>(&'a self) -> bool
Returns true if the Json value is a String. Returns false otherwise.
fn as_string<'a>(&'a self) -> Option<&'a str>
If the Json value is a String, returns the associated str. Returns None otherwise.
fn is_number(&self) -> bool
Returns true if the Json value is a Number. Returns false otherwise.
fn is_i64(&self) -> bool
Returns true if the Json value is a i64. Returns false otherwise.
fn is_u64(&self) -> bool
Returns true if the Json value is a u64. Returns false otherwise.
fn is_f64(&self) -> bool
Returns true if the Json value is a f64. Returns false otherwise.
fn as_i64(&self) -> Option<i64>
If the Json value is a number, return or cast it to a i64. Returns None otherwise.
fn as_u64(&self) -> Option<u64>
If the Json value is a number, return or cast it to a u64. Returns None otherwise.
fn as_f64(&self) -> Option<f64>
If the Json value is a number, return or cast it to a f64. Returns None otherwise.
fn is_boolean(&self) -> bool
Returns true if the Json value is a Boolean. Returns false otherwise.
fn as_boolean(&self) -> Option<bool>
If the Json value is a Boolean, returns the associated bool. Returns None otherwise.
fn is_null(&self) -> bool
Returns true if the Json value is a Null. Returns false otherwise.
fn as_null(&self) -> Option<()>
If the Json value is a Null, returns (). Returns None otherwise.