fluent4rs 2.3.1

Parser / codec for [Fluent FTL files](https://github.com/projectfluent/fluent/blob/master/spec/fluent.ebnf), written for [lingora](https://github.com/nigeleke/lingora) (a localization management program), and may be found to be useful outside of that context. It is not intended to replace any aspects of the [fluent-rs](https://github.com/projectfluent/fluent-rs) crate implemented by [Project Fluent](https://projectfluent.org/), and, for the majority of language translation needs, the reader is referred back to that crate.
Documentation 
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#[cfg(feature = "serde")]
use serde::{Deserialize, Serialize};

#[cfg(feature = "walker")]
use crate::walker::{Visitor, Walkable};

/// [Identifier](crate::ast::Identifier) ::= [a-zA-Z] [a-zA-Z0-9_-]*
#[derive(Clone, Debug, PartialEq)]
#[cfg_attr(any(test, feature = "hash"), derive(Eq, PartialOrd, Ord, Hash))]
#[cfg_attr(feature = "serde", derive(Deserialize, Serialize))]
pub struct Identifier(String);

impl From<&str> for Identifier {
    fn from(value: &str) -> Self {
        Self(value.into())
    }
}

#[cfg(feature = "walker")]
impl Walkable for Identifier {
    fn walk(&self, visitor: &mut dyn Visitor) {
        visitor.visit_identifier(self);
    }
}

impl std::fmt::Display for Identifier {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        write!(f, "{}", self.0)
    }
}