Enum rustc_serialize::json::Json
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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
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impl Json
pub fn from_reader(rdr: &mut Read) -> Result<Self, BuilderError>
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pub fn from_reader(rdr: &mut Read) -> Result<Self, BuilderError>
Decodes a json value from an &mut io::Read
pub fn from_str(s: &str) -> Result<Self, BuilderError>
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pub fn from_str(s: &str) -> Result<Self, BuilderError>
Decodes a json value from a string
pub fn pretty(&self) -> PrettyJson
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pub fn pretty(&self) -> PrettyJson
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>
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pub 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.
pub fn find_path<'a>(&'a self, keys: &[&str]) -> Option<&'a Json>
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pub 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.
pub fn search<'a>(&'a self, key: &str) -> Option<&'a Json>
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pub 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.
pub fn is_object<'a>(&'a self) -> bool
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pub fn is_object<'a>(&'a self) -> bool
Returns true if the Json value is an Object. Returns false otherwise.
pub fn as_object<'a>(&'a self) -> Option<&'a Object>
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pub fn as_object<'a>(&'a self) -> Option<&'a Object>
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>
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pub fn as_object_mut<'a>(&'a mut self) -> Option<&'a mut Object>
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>
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pub fn into_object(self) -> Option<Object>
If the Json value is an Object, returns the associated BTreeMap. Returns None otherwise.
pub fn is_array<'a>(&'a self) -> bool
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pub fn is_array<'a>(&'a self) -> bool
Returns true if the Json value is an Array. Returns false otherwise.
pub fn as_array<'a>(&'a self) -> Option<&'a Array>
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pub fn as_array<'a>(&'a self) -> Option<&'a Array>
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>
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pub fn as_array_mut<'a>(&'a mut self) -> Option<&'a mut Array>
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>
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pub fn into_array(self) -> Option<Array>
If the Json value is an Array, returns the associated vector. Returns None otherwise.
pub fn is_string<'a>(&'a self) -> bool
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pub fn is_string<'a>(&'a self) -> bool
Returns true if the Json value is a String. Returns false otherwise.
pub fn as_string<'a>(&'a self) -> Option<&'a str>
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pub fn as_string<'a>(&'a self) -> Option<&'a str>
If the Json value is a String, returns the associated str. Returns None otherwise.
pub fn is_number(&self) -> bool
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pub fn is_number(&self) -> bool
Returns true if the Json value is a Number. Returns false otherwise.
pub fn is_i64(&self) -> bool
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pub fn is_i64(&self) -> bool
Returns true if the Json value is a i64. Returns false otherwise.
pub fn is_u64(&self) -> bool
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pub fn is_u64(&self) -> bool
Returns true if the Json value is a u64. Returns false otherwise.
pub fn is_f64(&self) -> bool
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pub fn is_f64(&self) -> bool
Returns true if the Json value is a f64. Returns false otherwise.
pub fn as_i64(&self) -> Option<i64>
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pub fn as_i64(&self) -> Option<i64>
If the Json value is a number, return or cast it to a i64. Returns None otherwise.
pub fn as_u64(&self) -> Option<u64>
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pub fn as_u64(&self) -> Option<u64>
If the Json value is a number, return or cast it to a u64. Returns None otherwise.
pub fn as_f64(&self) -> Option<f64>
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pub fn as_f64(&self) -> Option<f64>
If the Json value is a number, return or cast it to a f64. Returns None otherwise.
pub fn is_boolean(&self) -> bool
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pub fn is_boolean(&self) -> bool
Returns true if the Json value is a Boolean. Returns false otherwise.
pub fn as_boolean(&self) -> Option<bool>
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pub fn as_boolean(&self) -> Option<bool>
If the Json value is a Boolean, returns the associated bool. Returns None otherwise.
pub fn is_null(&self) -> bool
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pub fn is_null(&self) -> bool
Returns true if the Json value is a Null. Returns false otherwise.
pub fn as_null(&self) -> Option<()>
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pub fn as_null(&self) -> Option<()>
If the Json value is a Null, returns (). Returns None otherwise.
Trait Implementations
impl Clone for Json
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impl Clone for Json
fn clone(&self) -> Json
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fn clone(&self) -> Json
Returns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)
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fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source
. Read more
impl PartialEq for Json
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impl PartialEq for Json
fn eq(&self, __arg_0: &Json) -> bool
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fn eq(&self, __arg_0: &Json) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, __arg_0: &Json) -> bool
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fn ne(&self, __arg_0: &Json) -> bool
This method tests for !=
.
impl PartialOrd for Json
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impl PartialOrd for Json
fn partial_cmp(&self, __arg_0: &Json) -> Option<Ordering>
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fn partial_cmp(&self, __arg_0: &Json) -> Option<Ordering>
This method returns an ordering between self
and other
values if one exists. Read more
fn lt(&self, __arg_0: &Json) -> bool
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fn lt(&self, __arg_0: &Json) -> bool
This method tests less than (for self
and other
) and is used by the <
operator. Read more
fn le(&self, __arg_0: &Json) -> bool
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fn le(&self, __arg_0: &Json) -> bool
This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
fn gt(&self, __arg_0: &Json) -> bool
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fn gt(&self, __arg_0: &Json) -> bool
This method tests greater than (for self
and other
) and is used by the >
operator. Read more
fn ge(&self, __arg_0: &Json) -> bool
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fn ge(&self, __arg_0: &Json) -> bool
This method tests greater than or equal to (for self
and other
) and is used by the >=
operator. Read more
impl Debug for Json
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impl Debug for Json
fn fmt(&self, __arg_0: &mut Formatter) -> Result
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fn fmt(&self, __arg_0: &mut Formatter) -> Result
Formats the value using the given formatter. Read more
impl Encodable for Json
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impl Encodable for Json
fn encode<S: Encoder>(&self, e: &mut S) -> Result<(), S::Error>
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fn encode<S: Encoder>(&self, e: &mut S) -> Result<(), S::Error>
Serialize a value using an Encoder
.
impl<'a> Index<&'a str> for Json
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impl<'a> Index<&'a str> for Json
type Output = Json
The returned type after indexing.
fn index(&self, idx: &str) -> &Json
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fn index(&self, idx: &str) -> &Json
Performs the indexing (container[index]
) operation.
impl Index<usize> for Json
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impl Index<usize> for Json
type Output = Json
The returned type after indexing.
fn index<'a>(&'a self, idx: usize) -> &'a Json
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fn index<'a>(&'a self, idx: usize) -> &'a Json
Performs the indexing (container[index]
) operation.
impl ToJson for Json
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impl ToJson for Json
impl Display for Json
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impl Display for Json
impl FromStr for Json
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impl FromStr for Json
type Err = ParserError
The associated error which can be returned from parsing.
fn from_str(s: &str) -> Result<Json, ParserError>
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fn from_str(s: &str) -> Result<Json, ParserError>
Parses a string s
to return a value of this type. Read more