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//! The `resolver` module contains the definitions and implementations for the internal
//! `ResolveValue` and `WriteValue` traits. The former converts AST nodes to a
//! [`FluentValue`], and the latter converts them to a string that is written to an
//! implementor of the [`std::fmt::Write`] trait.
pub mod errors;
mod expression;
mod inline_expression;
mod pattern;
mod scope;
pub use errors::ResolverError;
pub use scope::Scope;
use std::borrow::Borrow;
use std::fmt;
use crate::memoizer::MemoizerKind;
use crate::resource::FluentResource;
use crate::types::FluentValue;
/// Resolves an AST node to a [`FluentValue`].
pub(crate) trait ResolveValue<'bundle> {
/// Resolves an AST node to a [`FluentValue`].
fn resolve<'ast, 'args, 'errors, R, M>(
&'ast self,
scope: &mut Scope<'bundle, 'ast, 'args, 'errors, R, M>,
) -> FluentValue<'bundle>
where
R: Borrow<FluentResource>,
M: MemoizerKind;
}
/// Resolves an AST node to a string that is written to source `W`.
pub(crate) trait WriteValue<'bundle> {
/// Resolves an AST node to a string that is written to source `W`.
fn write<'ast, 'args, 'errors, W, R, M>(
&'ast self,
w: &mut W,
scope: &mut Scope<'bundle, 'ast, 'args, 'errors, R, M>,
) -> fmt::Result
where
W: fmt::Write,
R: Borrow<FluentResource>,
M: MemoizerKind;
/// Writes error information to `W`. This can be used to add FTL errors inline
/// to a message.
fn write_error<W>(&self, _w: &mut W) -> fmt::Result
where
W: fmt::Write;
}