runner 0.5.0

Utility for running Rust snippets
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use toml;
use std::fs;
use es::traits::*;
use std::path::Path;

#[derive(Deserialize)]
pub struct CargoLock {
    pub package: Vec<Package>
}

#[derive(Deserialize)]
pub struct Package {
    pub name: String,
    pub version: String,
    pub source: Option<String>,
    pub dependencies: Option<Vec<String>>,
}

pub fn read_cargo_lock(path: &Path) -> CargoLock {
    let lockf = path.join("Cargo.lock");
    let body = fs::read_to_string(&lockf).or_die("cannot read Cargo.lock");
    toml::from_str(&body).or_die("can't deserialize")
}