valico/json_schema/validators/
unique_items.rs

1use serde_json::{Value};
2
3use super::super::errors;
4use super::super::scope;
5
6#[allow(missing_copy_implementations)]
7pub struct UniqueItems;
8impl super::Validator for UniqueItems {
9    fn validate(&self, val: &Value, path: &str, _scope: &scope::Scope) -> super::ValidationState {
10        let array = nonstrict_process!(val.as_array(), path);
11
12        // TODO we need some quicker algorithm for this
13
14        let mut unique = true;
15        'main: for (idx, item_i) in array.iter().enumerate() {
16            for item_j in array[..idx].iter() {
17                if item_i == item_j {
18                    unique = false;
19                    break 'main;
20                }
21            }
22
23            for item_j in array[(idx + 1)..].iter() {
24                if item_i == item_j {
25                    unique = false;
26                    break 'main;
27                }
28            }
29        }
30
31        if unique {
32            super::ValidationState::new()
33        } else {
34            val_error!(
35                errors::UniqueItems {
36                    path: path.to_string()
37                }
38            )
39        }
40    }
41}