sim_expr_tree_core/
id.rs

1use std::fmt;
2
3use crate::error::NamespaceError;
4
5macro_rules! id_type {
6    ($name:ident, $label:literal) => {
7        #[doc = concat!("Stable ", $label, " identity.")]
8        #[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
9        pub struct $name(String);
10
11        impl $name {
12            #[doc = concat!("Create a ", $label, " id from non-empty text.")]
13            pub fn new(value: impl Into<String>) -> Result<Self, NamespaceError> {
14                let value = value.into();
15                if value.is_empty() {
16                    return Err(NamespaceError::EmptyId { kind: $label });
17                }
18                Ok(Self(value))
19            }
20
21            #[doc = concat!("Borrow the underlying ", $label, " id text.")]
22            pub fn as_str(&self) -> &str {
23                &self.0
24            }
25        }
26
27        impl fmt::Display for $name {
28            fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
29                f.write_str(&self.0)
30            }
31        }
32    };
33}
34
35id_type!(TreeId, "tree");
36id_type!(CellId, "cell");
37id_type!(DirId, "dir");
sim_expr_tree_core/id.rs

sim_expr_tree_core/
id.rs
