Native JSON for Rust
This crate provides native JSON syntax for Rust, it brings with a powerful way of parsing JSON syntax into native Rust structs. You can declare the JSON object natively as you do with JavaScript, JSON in Rust was made easy!
Usage
Add dependencies to your Cargo.toml
.
[dependencies]
native-json = "1.2"
serde = {version = "1.0", features = ["derive"] }
serde_json = "1.0"
Example of using native JSON object
use native_json::json;
use std::collections::HashMap;
use serde::{Deserialize, Serialize};
fn main()
{
let mut json = json!{
name: "native json",
style: {
color: "red",
size: 12,
bold: true,
range: null
},
array: [5,4,3,2,1],
vector: vec![1,2,3,4,5],
hashmap: HashMap::from([ ("a", 1), ("b", 2), ("c", 3) ]);,
students: [
{name: "John", age: 18},
{name: "Jack", age: 21},
],
};
json.style.size += 1;
json.students[0].age += 2;
println!("{:#?}", t);
let text = json.stringify(4);
println!("{}", text);
}
Declare a named JSON struct
With JSON declare syntax, you can declare nested native JSON object in place.
JSON Declare Syntax
json!{
JSON_OBJECT_NAME {
state: i32?, type_: String, name : type,
array: [type],
object: {
name: type,
...
},
...
}}
The native-json will generate native Rust structs for you, each object is named by object hierarchy path, concatenated with underscore.
JSON_OBJECT_NAME.object
was converted to JSON_OBJECT_NAME_object
JSON_OBJECT_NAME.array's item
was converted to JSON_OBJECT_NAME_array_item
Example of using named JSON object
use native_json::json;
use serde::{Deserialize, Serialize};
use std::collections::HashMap;
json!{
School {
name: String,
students: [
{ name: String, age: u16 },
...
],
map: HashMap<String, String>,
nullable: Option<String>
}}
fn main()
{
let mut school = School::new();
school.name = "MIT".to_string();
school.map.insert("Tom".to_owned(), "Profile".to_owned());
let mut john = School_students_item::new();
john.name = "John".to_owned();
john.age = 18;
school.students.push(john);
let jack = School_students_item { name: "Jack".to_string(), age: 21 };
school.students.push(jack);
println!("{:#?}", school);
}