// 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.

#[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<T>(&self, val: T) -> bool
    where
        T: AsRef<str>,
    {
        regex::Regex::new(&self.regex)
            .unwrap()
            .is_match(val.as_ref())
    }
}