Enum 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, }
rustc_private
): deprecated in favor of rustc-serialize on crates.io
Represents a json value
Variants
I64(i64)
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U64(u64)
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F64(f64)
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String(String)
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Boolean(bool)
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Array(Array)
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Object(Object)
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Null
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Methods
impl Json
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fn pretty(&self) -> PrettyJson
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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>
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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>
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): deprecated in favor of rustc-serialize on crates.io
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>
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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(&self) -> bool
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Returns true if the Json value is an Object. Returns false otherwise.
fn as_object(&self) -> Option<&Object>
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If the Json value is an Object, returns the associated BTreeMap. Returns None otherwise.
fn is_array(&self) -> bool
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Returns true if the Json value is an Array. Returns false otherwise.
fn as_array(&self) -> Option<&Array>
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If the Json value is an Array, returns the associated vector. Returns None otherwise.
fn is_string(&self) -> bool
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Returns true if the Json value is a String. Returns false otherwise.
fn as_string(&self) -> Option<&str>
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If the Json value is a String, returns the associated str. Returns None otherwise.
fn is_number(&self) -> bool
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Returns true if the Json value is a Number. Returns false otherwise.
fn is_i64(&self) -> bool
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Returns true if the Json value is a i64. Returns false otherwise.
fn is_u64(&self) -> bool
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Returns true if the Json value is a u64. Returns false otherwise.
fn is_f64(&self) -> bool
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Returns true if the Json value is a f64. Returns false otherwise.
fn as_i64(&self) -> Option<i64>
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If the Json value is a number, return or cast it to a i64. Returns None otherwise.
fn as_u64(&self) -> Option<u64>
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If the Json value is a number, return or cast it to a u64. Returns None otherwise.
fn as_f64(&self) -> Option<f64>
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If the Json value is a number, return or cast it to a f64. Returns None otherwise.
fn is_boolean(&self) -> bool
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Returns true if the Json value is a Boolean. Returns false otherwise.
fn as_boolean(&self) -> Option<bool>
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If the Json value is a Boolean, returns the associated bool. Returns None otherwise.
fn is_null(&self) -> bool
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Returns true if the Json value is a Null. Returns false otherwise.
fn as_null(&self) -> Option<()>
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If the Json value is a Null, returns (). Returns None otherwise.
Trait Implementations
impl Encodable for Json
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impl<'a> Index<&'a str> for Json
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type Output = Json
The returned type after indexing
fn index(&self, idx: &'a str) -> &Json
The method for the indexing (Foo[Bar]
) operation
impl Index<usize> for Json
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type Output = Json
The returned type after indexing
fn index(&self, idx: usize) -> &Json
The method for the indexing (Foo[Bar]
) operation
impl ToJson for Json
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impl Display for Json
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fn fmt(&self, f: &mut Formatter) -> Result
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Encodes a json value into a string
impl FromStr for Json
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type Err = BuilderError
The associated error which can be returned from parsing.
fn from_str(s: &str) -> Result<Json, BuilderError>
Parses a string s
to return a value of this type. Read more
Derived Implementations
impl Debug for Json
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impl PartialOrd for Json
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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
This method tests less than (for self
and other
) and is used by the <
operator. Read more
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
This method tests greater than (for self
and other
) and is used by the >
operator. Read more
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 PartialEq for Json
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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
This method tests for !=
.
impl Clone for Json
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fn clone(&self) -> Json
Returns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)
1.0.0
Performs copy-assignment from source
. Read more