prove 0.1.5

prove struct
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
43
44
45
46
47
48
49

// Copyright 2019 YechaoLi
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

use crate::AsValidateStr;

#[derive(Debug, Clone)]
pub struct Match {
    pub regex: String,
}

#[cfg(feature = "proc")]
impl quote::ToTokens for Match {
    fn to_tokens(&self, tokens: &mut proc_macro2::TokenStream) {
        use quote::quote;

        let regex = &self.regex;
        regex::Regex::new(regex).expect("Invalid regex");

        tokens.extend(quote! {
            (::prove::r#match::Match {
                regex: #regex.to_owned(),
            })
        });
    }
}

impl Match {
    pub fn validate<'a, T>(&self, val: &'a T) -> bool
    where
        T: AsValidateStr<'a>,
    {
        if let Some(val) = val.as_validate_str().as_ref() {
            regex::Regex::new(&self.regex).unwrap().is_match(val)
        } else {
            true
        }
    }
}