sk_core/
jsonutils.rs

1use std::collections::hash_map::DefaultHasher;
2use std::hash::{
3    Hash,
4    Hasher,
5};
6
7use serde_json as json;
8
9struct HashableJsonValue<'a>(&'a json::Value);
10
11impl Hash for HashableJsonValue<'_> {
12    fn hash<H: Hasher>(&self, state: &mut H) {
13        match self.0 {
14            json::Value::Null => None::<()>.hash(state),
15            json::Value::Bool(b) => b.hash(state),
16            json::Value::Number(n) => n.hash(state),
17            json::Value::String(s) => s.hash(state),
18            json::Value::Array(a) => {
19                for v in a {
20                    HashableJsonValue(v).hash(state);
21                }
22            },
23            json::Value::Object(o) => {
24                for (k, v) in o {
25                    k.hash(state);
26                    HashableJsonValue(v).hash(state);
27                }
28            },
29        }
30    }
31}
32
33pub fn hash_option(maybe_v: Option<&json::Value>) -> u64 {
34    let mut s = DefaultHasher::new();
35    match maybe_v {
36        None => HashableJsonValue(&json::Value::Null).hash(&mut s),
37        Some(v) => HashableJsonValue(v).hash(&mut s),
38    }
39    s.finish()
40}
41
42pub fn hash(v: &json::Value) -> u64 {
43    let mut s = DefaultHasher::new();
44    HashableJsonValue(v).hash(&mut s);
45    s.finish()
46}
sk_core/jsonutils.rs

sk_core/
jsonutils.rs
