json_model/attribute/
string_pattern.rs

1use super::{AllowedType, Attribute};
2use crate::definition::Type;
3use crate::error::{Error, ValidationError};
4use crate::validator::{Context, DocumentPath, State};
5
6use std::collections::HashSet;
7
8use regex::Regex;
9
10#[derive(Debug)]
11pub struct StringPattern {
12    name: String,
13    re: Regex,
14}
15
16impl StringPattern {
17    pub fn new(mut path: DocumentPath, ctx: &Context) -> Result<Self, Error> {
18        let obj = ctx.raw_definition();
19
20        match Type::new(obj, path.clone())? {
21            Type::String => (),
22            typ => return Err(Error::ForbiddenType { path, typ }),
23        };
24
25        let re = match obj.get(ctx.name().as_str()) {
26            Some(pattern) => match pattern.as_str() {
27                Some(pattern_str) => match Regex::new(pattern_str) {
28                    Ok(re) => re,
29                    Err(_) => {
30                        return Err(Error::InvalidValue {
31                            path,
32                            value: pattern.clone(),
33                        })
34                    }
35                },
36                None => {
37                    path.add(ctx.name().as_str());
38                    return Err(Error::InvalidValue {
39                        path,
40                        value: pattern.clone(),
41                    });
42                }
43            },
44            None => {
45                return Err(Error::MissingAttribute {
46                    path,
47                    attr: ctx.name(),
48                })
49            }
50        };
51
52        Ok(StringPattern {
53            name: ctx.name(),
54            re,
55        })
56    }
57
58    pub fn allowed_types() -> HashSet<AllowedType> {
59        let mut set = HashSet::<AllowedType>::new();
60        set.insert(AllowedType::new(Type::String, false));
61        set
62    }
63
64    pub fn build(
65        _: &mut State,
66        path: DocumentPath,
67        ctx: &Context,
68    ) -> Result<Box<Attribute>, Error> {
69        Ok(Box::new(StringPattern::new(path, ctx)?))
70    }
71}
72
73impl Attribute for StringPattern {
74    fn validate(
75        &self,
76        _: &State,
77        path: Vec<String>,
78        input: &serde_json::Value,
79    ) -> Result<(), ValidationError> {
80        let val = match input.as_str() {
81            Some(val) => val,
82            None => {
83                return Err(ValidationError::Failure {
84                    rule: "type".to_string(),
85                    path: path,
86                    message: "Value must be a string.".to_string(),
87                })
88            }
89        };
90        if !self.re.is_match(val) {
91            return Err(ValidationError::Failure {
92                rule: self.name.clone(),
93                path: path,
94                message: "Value does not match the required format.".to_string(),
95            });
96        }
97        Ok(())
98    }
99}
json_model/attribute/string_pattern.rs

json_model/attribute/
string_pattern.rs
