tytanic_filter/ast/
id.rs

1use std::borrow::Borrow;
2use std::fmt::Debug;
3use std::ops::Deref;
4
5use ecow::EcoString;
6use pest::iterators::Pair;
7
8use super::{Error, PairExt, Rule};
9use crate::eval::{self, Context, Eval, Test, Value};
10
11/// An identifier node.
12#[derive(Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
13pub struct Id(pub EcoString);
14
15impl Id {
16    /// The inner string.
17    pub fn as_str(&self) -> &str {
18        self.0.as_str()
19    }
20
21    /// Unwraps the inner eco string.
22    pub fn into_inner(self) -> EcoString {
23        self.0
24    }
25}
26
27impl Debug for Id {
28    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
29        self.0.fmt(f)
30    }
31}
32
33impl Deref for Id {
34    type Target = str;
35
36    fn deref(&self) -> &Self::Target {
37        self.as_str()
38    }
39}
40
41impl AsRef<str> for Id {
42    fn as_ref(&self) -> &str {
43        self.as_str()
44    }
45}
46
47impl Borrow<str> for Id {
48    fn borrow(&self) -> &str {
49        self.as_str()
50    }
51}
52
53impl From<EcoString> for Id {
54    fn from(value: EcoString) -> Self {
55        Self(value)
56    }
57}
58
59impl From<Id> for EcoString {
60    fn from(value: Id) -> Self {
61        value.into_inner()
62    }
63}
64
65impl<T: Test> Eval<T> for Id {
66    fn eval(&self, ctx: &Context<T>) -> Result<Value<T>, eval::Error> {
67        ctx.resolve(self)
68    }
69}
70
71impl Id {
72    pub(super) fn parse(pair: Pair<'_, Rule>) -> Result<Id, Error> {
73        pair.expect_rules(&[Rule::id])?;
74        Ok(Id(pair.as_str().into()))
75    }
76}
tytanic_filter/ast/id.rs

tytanic_filter/ast/
id.rs
