Serde扩展

覆盖

覆盖结构体的所有值

use std::{collections::HashMap, path::PathBuf};

use serde_extension::Overwrite;
use toml::Value;

#[derive(Debug, Overwrite)]
struct Test {
    a: PathBuf,
    b: String,
    c: Vec<String>,
    d: u32,
    e: HashMap<String, String>,
}

const TEST_TOML: &'static str = r#"
a = "/test/asdf"
c = ["c", "c"]
[e]
test="asdf"
"#;

pub fn main() {
    let mut e = HashMap::new();
    e.insert("test", "fdsa");
    let mut test = Test {
        a: PathBuf::default(),
        b: "b".into(),
        c: vec!["asdf".into()],
        d: 0,
        e: HashMap::new(),
    };
    let value: Value = toml::from_str(TEST_TOML).unwrap();
    test.overwrite(value).unwrap();

    assert_eq!(
        format!("{test:?}"),
        r#"Test { a: "/test/asdf", b: "b", c: ["c", "c"], d: 0, e: {"test": "asdf"} }"#
    )
}