std::encoding::json

Status: experimental

JSON parser, emitter, and derive support.

API details and source

The implementation source contains the complete declarations and implementation notes. The table below lists canonical Gossamer call signatures; every item name links directly to its implementation file.

Item	Canonical signature or declaration	Description
Deserialize	trait Deserialize	Trait for parsing a value from JSON.
Error	type Error	Error raised by encoding/decoding operations.
Serialize	trait Serialize	Trait for converting a value to JSON.
Value	type Value	Dynamically typed JSON value.
as_array	fn as_array(value: json::Value) -> Option<Vec<json::Value>>	Reads a dynamic Value as an array of Values.
as_bool	fn as_bool(value: json::Value) -> Option<bool>	Reads a dynamic Value as Option.
as_f64	fn as_f64(value: json::Value) -> Option<f64>	Reads a dynamic Value as Option.
as_i64	fn as_i64(value: json::Value) -> Option<i64>	Reads a dynamic Value as Option.
as_str	fn as_str(value: json::Value) -> Option<String>	Reads a dynamic Value as Option.
at	fn at(value: json::Value, index: i64) -> Option<json::Value>	Indexes an array element on a dynamic Value.
decode	fn decode(source: String) -> Result<json::Value, errors::Error>	Decodes a JSON String into a Deserialize value.
encode	fn encode(value: json::Value) -> String	Encodes a Serialize value as a JSON String.
encode_pretty	fn encode_pretty(value: json::Value) -> String	Renders a value as indented JSON text.
get	fn get(value: json::Value, key: String) -> Option<json::Value>	Looks up an object field on a dynamic Value.
is_null	fn is_null(value: json::Value) -> bool	Reports whether a dynamic Value is null.
keys	fn keys(value: json::Value) -> Option<Vec<String>>	Object field names of a dynamic Value.
len	fn len(value: json::Value) -> i64	Element / field count of a dynamic Value.
parse	fn parse(source: String) -> Result<json::Value, errors::Error>	Parses JSON text into a dynamic Value.
render	fn render(value: json::Value) -> String	Renders a dynamic Value as compact JSON text.
set	fn set(value: json::Value, key: String, next: json::Value) -> json::Value	Sets an object field on a dynamic Value.
valid	fn valid(source: String) -> bool	Reports whether the text is well-formed JSON.