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
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
#[cfg(feature = "serde")]
use serde::{Deserialize, Serialize};
use super::{Attribute, Identifier, Pattern};
#[cfg(feature = "walker")]
use crate::walker::{Visitor, Walkable, Walker};
/// [Term](crate::ast::Term) ::= "-" [Identifier](crate::ast::Identifier) blank_inline? "=" blank_inline? [Pattern](crate::ast::Pattern) [Attribute](crate::ast::Attribute)*
#[derive(Clone, Debug, PartialEq)]
#[cfg_attr(feature = "hash", derive(Eq, PartialOrd, Ord, Hash))]
#[cfg_attr(feature = "serde", derive(Deserialize, Serialize))]
pub struct Term {
identifier: Identifier,
pattern: Pattern,
attributes: Vec<Attribute>,
}
impl Term {
/// Constructs a new `Term` representing a reusable term in a Fluent Translation List (FTL) file.
///
/// # Arguments
/// * `identifier` - The unique identifier (key) of the term. Must be a valid Fluent identifier.
/// * `pattern` - The primary value pattern of the term.
/// * `attributes` - Zero or more attributes attached to the term.
pub fn new(identifier: Identifier, pattern: Pattern, attributes: Vec<Attribute>) -> Self {
Self {
identifier,
pattern,
attributes,
}
}
/// Returns the term identifier.
///
/// Note: a [Message](crate::ast::Message) and [Term](crate::ast::Term) [Identifier](crate::ast::Identifier)
/// may be the same, e,g, `product = ...` versus `-product = ...`.
pub fn identifier(&self) -> &Identifier {
&self.identifier
}
/// Returns the term identifier _name_.
///
/// Note: Differentiates the [Message](crate::ast::Message) and [Term](crate::ast::Term)
/// [Identifier](crate::ast::Identifier) name by using the '-' prefix for the [Term](crate::ast::Term).
pub fn identifier_name(&self) -> String {
format!("-{}", self.identifier)
}
/// Returns the term [Pattern](crate::ast::Pattern).
pub fn pattern(&self) -> &Pattern {
&self.pattern
}
/// Returns the message [Attribute](crate::ast::Attribute)s.
pub fn attributes(&self) -> &[Attribute] {
&self.attributes
}
}
#[cfg(feature = "walker")]
impl Walkable for Term {
fn walk(&self, visitor: &mut dyn Visitor) {
visitor.visit_term(self);
Walker::walk(&self.identifier, visitor);
Walker::walk(&self.pattern, visitor);
self.attributes()
.iter()
.for_each(|a| Walker::walk(a, visitor));
}
}
impl std::fmt::Display for Term {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
let attributes = self
.attributes
.iter()
.map(|a| a.to_string())
.collect::<Vec<_>>()
.join("");
writeln!(f, "-{} = {}{}", self.identifier, self.pattern, attributes)
}
}