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//! `Entry` is used to store Messages, Terms and Functions in `FluentBundle` instances.
use std::borrow::Borrow;
use fluent_syntax::ast;
use crate::args::FluentArgs;
use crate::bundle::FluentBundle;
use crate::resource::FluentResource;
use crate::types::FluentValue;
pub type FluentFunction =
Box<dyn for<'a> Fn(&[FluentValue<'a>], &FluentArgs) -> FluentValue<'a> + Send + Sync>;
pub enum Entry {
Message((usize, usize)),
Term((usize, usize)),
Function(FluentFunction),
}
pub trait GetEntry {
fn get_entry_message(&self, id: &str) -> Option<&ast::Message<&str>>;
fn get_entry_term(&self, id: &str) -> Option<&ast::Term<&str>>;
fn get_entry_function(&self, id: &str) -> Option<&FluentFunction>;
}
impl<'bundle, R: Borrow<FluentResource>, M> GetEntry for FluentBundle<R, M> {
fn get_entry_message(&self, id: &str) -> Option<&ast::Message<&str>> {
self.entries.get(id).and_then(|ref entry| match entry {
Entry::Message(pos) => {
let res = self.resources.get(pos.0)?.borrow();
if let ast::Entry::Message(ref msg) = res.get_entry(pos.1)? {
Some(msg)
} else {
None
}
}
_ => None,
})
}
fn get_entry_term(&self, id: &str) -> Option<&ast::Term<&str>> {
self.entries.get(id).and_then(|ref entry| match entry {
Entry::Term(pos) => {
let res = self.resources.get(pos.0)?.borrow();
if let ast::Entry::Term(ref msg) = res.get_entry(pos.1)? {
Some(msg)
} else {
None
}
}
_ => None,
})
}
fn get_entry_function(&self, id: &str) -> Option<&FluentFunction> {
self.entries.get(id).and_then(|ref entry| match entry {
Entry::Function(function) => Some(function),
_ => None,
})
}
}
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