serde_json::from_reader benchmark 1

main.rs

use serde::{Deserialize, Serialize};
use serde_json::Value;

#[derive(Serialize, Deserialize)]
pub struct RawSectionOffset {
    pub line: u32,
    pub column: u32,
}

#[derive(Serialize, Deserialize)]
pub struct RawSection {
    pub offset: RawSectionOffset,
    pub url: Option<String>,
    pub map: Option<Box<RawSourceMap>>,
}

#[derive(Serialize, Deserialize)]
pub struct RawSourceMap {
    pub version: u32,
    pub file: Option<String>,
    pub sources: Vec<String>,
    #[serde(rename="sourceRoot")]
    pub source_root: Option<String>,
    #[serde(rename="sourcesContent")]
    pub sources_content: Option<Vec<Option<String>>>,
    pub sections: Option<Vec<RawSection>>,
    pub names: Vec<Value>,
    pub mappings: String,
}

fn main() {
    let reader = std::fs::File::open("vendor2.js.map").unwrap();
    //let reader = std::io::BufReader::new(reader);
    let map: RawSourceMap  = serde_json::from_reader(reader).unwrap();
    println!("{}", map.version);
}