link_cli/
query_types.rs

1//! The intermediate shapes a query passes through: the [`Pattern`] a
2//! restriction or substitution parses into, and the [`ResolvedLink`] a pattern
3//! becomes once its variables are bound.
4
5use crate::link::Link;
6
7#[derive(Clone, Debug, Eq, PartialEq)]
8pub struct Pattern {
9    pub index: String,
10    pub source: Option<Box<Pattern>>,
11    pub target: Option<Box<Pattern>>,
12}
13
14impl Pattern {
15    pub fn new(index: String, source: Option<Pattern>, target: Option<Pattern>) -> Self {
16        Self {
17            index,
18            source: source.map(Box::new),
19            target: target.map(Box::new),
20        }
21    }
22
23    pub fn is_leaf(&self) -> bool {
24        self.source.is_none() && self.target.is_none()
25    }
26}
27
28#[derive(Clone, Debug, Eq, PartialEq)]
29pub struct ResolvedLink {
30    pub index: u32,
31    pub source: u32,
32    pub target: u32,
33    pub name: Option<String>,
34}
35
36impl ResolvedLink {
37    pub fn new(index: u32, source: u32, target: u32, name: Option<String>) -> Self {
38        Self {
39            index,
40            source,
41            target,
42            name,
43        }
44    }
45
46    pub fn to_link(&self) -> Link {
47        Link::new(self.index, self.source, self.target)
48    }
49}
link_cli/query_types.rs

link_cli/
query_types.rs
