castep_param_io/param/units/
inv_length_unit.rs

1use std::fmt::Display;
2
3use serde::{Deserialize, Serialize};
4
5use crate::param::KeywordDisplay;
6
7#[derive(
8    Debug, Clone, Copy, Hash, Serialize, Deserialize, PartialEq, Eq, PartialOrd, Ord, Default,
9)]
10/// This keyword specifies the units in which inverse length will be reported.
11/// # Example
12/// `INV_LENGTH_UNIT : 1/nm`
13pub enum InvLengthUnit {
14    Bohr,
15    Meter,
16    Nanometer,
17    #[default]
18    Ang,
19}
20
21impl Display for InvLengthUnit {
22    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
23        match self {
24            InvLengthUnit::Bohr => f.write_str("1/"),
25            InvLengthUnit::Meter => f.write_str("1/m"),
26            InvLengthUnit::Nanometer => f.write_str("1/nm"),
27            InvLengthUnit::Ang => f.write_str("1/ang"),
28        }
29    }
30}
31
32impl KeywordDisplay for InvLengthUnit {
33    fn field(&self) -> String {
34        "INV_LENGTH_UNIT".to_string()
35    }
36}