valico/json_schema/validators/
items.rs

1use serde_json::Value;
2use std::borrow::Cow;
3use std::cmp;
4
5use super::super::errors;
6use super::super::scope;
7
8#[derive(Debug)]
9pub enum ItemsKind {
10    Schema(url::Url),
11    Array(Vec<url::Url>),
12}
13
14#[derive(Debug)]
15pub enum AdditionalKind {
16    Boolean(bool),
17    Schema(url::Url),
18}
19
20#[allow(missing_copy_implementations)]
21pub struct Items {
22    pub items: Option<ItemsKind>,
23    pub additional: Option<AdditionalKind>,
24}
25
26impl super::Validator for Items {
27    fn validate(
28        &self,
29        val: &Value,
30        path: &str,
31        scope: &scope::Scope,
32        _: &super::ValidationState,
33    ) -> super::ValidationState {
34        let mut array = Cow::Borrowed(nonstrict_process!(val.as_array(), path));
35        let mut state = super::ValidationState::new();
36
37        if scope.supply_defaults {
38            if let Some(ItemsKind::Array(urls)) = self.items.as_ref() {
39                // supply default values as long as there are more schema default values
40                // than values in the validated array (but stop at first gap)
41                for url in urls.iter().skip(array.len()) {
42                    if let Some(schema) = scope.resolve(url) {
43                        if let Some(default) = schema.get_default() {
44                            array.to_mut().push(default);
45                        } else {
46                            break;
47                        }
48                    } else {
49                        break;
50                    }
51                }
52            }
53        }
54
55        match self.items {
56            Some(ItemsKind::Schema(ref url)) => {
57                // Just validate all items against the schema
58
59                let schema = scope.resolve(url);
60                if let Some(schema) = schema {
61                    for idx in 0..array.len() {
62                        let item = &array[idx];
63                        let item_path = [path, idx.to_string().as_ref()].join("/");
64                        let mut result = schema.validate_in(item, item_path.as_ref());
65                        if result.is_valid() {
66                            state.evaluated.insert(item_path);
67                            if result.replacement.is_some() {
68                                array.to_mut()[idx] = result.replacement.take().unwrap();
69                            }
70                        }
71                        state.append(result);
72                    }
73                } else {
74                    state.missing.push(url.clone());
75                }
76            }
77            Some(ItemsKind::Array(ref urls)) => {
78                let min = cmp::min(urls.len(), array.len());
79
80                // Validate against schemas
81                for idx in 0..min {
82                    let schema = scope.resolve(&urls[idx]);
83                    let item = &array[idx];
84
85                    if let Some(schema) = schema {
86                        let item_path = [path, idx.to_string().as_ref()].join("/");
87                        let mut result = schema.validate_in(item, item_path.as_ref());
88
89                        if result.is_valid() {
90                            state.evaluated.insert(item_path);
91                            if result.replacement.is_some() {
92                                array.to_mut()[idx] = result.replacement.take().unwrap();
93                            }
94                        }
95                        state.append(result);
96                    } else {
97                        state.missing.push(urls[idx].clone())
98                    }
99                }
100
101                // Validate agains additional items
102                if array.len() > urls.len() {
103                    match self.additional {
104                        Some(AdditionalKind::Boolean(allow)) => {
105                            if !allow {
106                                state.errors.push(Box::new(errors::Items {
107                                    path: path.to_string(),
108                                    detail: "Additional items are not allowed".to_string(),
109                                }))
110                            } else {
111                                for idx in urls.len()..array.len() {
112                                    state
113                                        .evaluated
114                                        .insert([path, idx.to_string().as_ref()].join("/"));
115                                }
116                            }
117                        }
118                        Some(AdditionalKind::Schema(ref url)) => {
119                            let schema = scope.resolve(url);
120                            if let Some(schema) = schema {
121                                for idx in urls.len()..array.len() {
122                                    let item = &array[idx];
123                                    let item_path = [path, idx.to_string().as_ref()].join("/");
124                                    let mut result = schema.validate_in(item, item_path.as_ref());
125                                    if result.is_valid() {
126                                        state.evaluated.insert(item_path);
127                                        if result.replacement.is_some() {
128                                            array.to_mut()[idx] =
129                                                result.replacement.take().unwrap();
130                                        }
131                                    }
132                                    state.append(result);
133                                }
134                            } else {
135                                state.missing.push(url.clone())
136                            }
137                        }
138                        _ => (),
139                    }
140                }
141            }
142            _ => (),
143        }
144
145        state.set_replacement(array);
146        state
147    }
148}
valico/json_schema/validators/items.rs

valico/json_schema/validators/
items.rs
