Last active
June 25, 2016 23:29
-
-
Save orthecreedence/09f266ef01eb4b54ecd234644824e717 to your computer and use it in GitHub Desktop.
Rust example
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
extern crate serde_json; | |
use self::serde_json::Value; | |
use self::serde_json::Value::{I64, U64, F64, Bool, Null, Object, Array}; | |
fn grab(keys: Vec<&str>, data: Value) -> Result<Value, String> { | |
let last: bool = keys.len() == 0; | |
if last { return Ok(data); } | |
let key = keys[0]; | |
match data { | |
I64(_) | U64(_) | F64(_) | serde_json::Value::String(_) | Bool(_) | Null => { | |
return Err(format!("not found")); | |
}, | |
Object(_) => { | |
match data.as_object().and_then(|obj| obj.get(key)) { | |
Some(d) => grab(keys[1..].to_vec(), d.clone()), | |
None => Err(format!("not found")), | |
} | |
}, | |
Array(_) => { | |
let key = match key.parse::<usize>() { | |
Ok(x) => x, | |
Err(e) => return Err(format!("problem parsing integer: {:?}", e)), | |
}; | |
// TODO: fix dupe code here | |
match data.as_array().and_then(|obj| obj.get(key)) { | |
Some(d) => grab(keys[1..].to_vec(), d.clone()), | |
None => Err(format!("not found")), | |
} | |
}, | |
} | |
} | |
fn test() { | |
let data: Value = match serde_json::from_str("[\"test\",{\"name\":\"slappy\"},2,3]") { | |
Ok(j) => j, | |
Err(e) => { | |
warn!("problem parsing JSON, {:?}", e); | |
return | |
} | |
}; | |
match json::grab(vec!["1", "name"], data).unwrap() { | |
Value::I64(x) => println!("i64: {}", x), | |
Value::U64(x) => println!("u64: {}", x), | |
Value::F64(x) => println!("f64: {}", x), | |
Value::String(x) => println!("str: {}", x), | |
Value::Bool(x) => println!("bool: {}", x), | |
Value::Null => println!("Null"), | |
Value::Object(_) => println!("got object"), | |
Value::Array(_) => println!("got array"), | |
} | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment