cynic_parser/values/
lists.rs

1use std::fmt;
2
3use crate::{AstLookup, Span};
4
5use super::{const_lists::ConstList, ids::ValueId, iter::Iter, value::Value, Cursor};
6
7#[derive(Clone, Copy)]
8pub struct List<'a>(pub(super) super::Cursor<'a, ValueId>);
9
10impl<'a> List<'a> {
11    pub fn is_empty(&self) -> bool {
12        self.len() == 0
13    }
14
15    pub fn len(&self) -> usize {
16        let store = &self.0.store;
17        store.lookup(self.0.id).kind.as_list().unwrap().len()
18    }
19
20    pub fn span(&self) -> Span {
21        let store = &self.0.store;
22        store.lookup(self.0.id).span
23    }
24
25    pub fn items(&self) -> Iter<'a, Value<'a>> {
26        let store = &self.0.store;
27        Iter::new(store.lookup(self.0.id).kind.as_list().unwrap(), store)
28    }
29
30    pub fn get(&self, index: usize) -> Option<Value<'a>> {
31        self.items().nth(index)
32    }
33}
34
35impl PartialEq for List<'_> {
36    fn eq(&self, other: &Self) -> bool {
37        self.len() == other.len() && self.items().zip(other.items()).all(|(lhs, rhs)| lhs == rhs)
38    }
39}
40
41impl fmt::Debug for List<'_> {
42    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
43        f.debug_list().entries(self.items()).finish()
44    }
45}
46
47impl<'a> From<ConstList<'a>> for List<'a> {
48    fn from(value: ConstList<'a>) -> Self {
49        let Cursor { id, store } = value.0;
50
51        let id = id.into();
52
53        List(Cursor { id, store })
54    }
55}
56
57impl<'a> IntoIterator for List<'a> {
58    type Item = Value<'a>;
59
60    type IntoIter = Iter<'a, Value<'a>>;
61
62    fn into_iter(self) -> Self::IntoIter {
63        self.items()
64    }
65}
cynic_parser/values/lists.rs

cynic_parser/values/
lists.rs
