prost-protovalidate 0.3.0

Runtime validation for Protocol Buffer messages using buf.validate rules
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42

use crate::config::ValidationConfig;
use crate::error::{Error, ValidationError};
use crate::violation::Violation;

pub(crate) struct BoolRuleEval {
    r#const: Option<bool>,
}

impl BoolRuleEval {
    pub fn new(rules: &prost_protovalidate_types::BoolRules) -> Self {
        Self {
            r#const: rules.r#const,
        }
    }

    pub fn tautology(&self) -> bool {
        self.r#const.is_none()
    }

    pub fn evaluate(
        &self,
        val: &prost_reflect::Value,
        _cfg: &ValidationConfig,
    ) -> Result<(), Error> {
        let Some(v) = val.as_bool() else {
            return Ok(());
        };

        if let Some(c) = self.r#const {
            if v != c {
                return Err(ValidationError::single(Violation::new(
                    "",
                    "bool.const",
                    format!("must equal {c}"),
                ))
                .into());
            }
        }

        Ok(())
    }
}