mdbook_journal/journal/topic/
variables.rs

1pub use crate::prelude::*;
2
3pub type DefaultValue = Arc<str>;
4pub type KeyName = Arc<str>;
5
6#[derive(Debug)]
7pub struct Variable {
8    key: KeyName,
9    required: bool,
10    default: Option<DefaultValue>,
11}
12
13#[derive(Debug, Default)]
14pub struct VariableMap {
15    data: BTreeMap<KeyName, Variable>,
16}
17
18impl Variable {
19    pub fn new<S>(key: S) -> Self
20    where
21        S: Into<KeyName>,
22    {
23        Self {
24            key: key.into(),
25            required: false,
26            default: None,
27        }
28    }
29
30    pub fn required(self) -> Self {
31        Self {
32            required: true,
33            ..self
34        }
35    }
36
37    pub fn default<S>(self, value: S) -> Self
38    where
39        S: Into<DefaultValue>,
40    {
41        Self {
42            default: Some(value.into()),
43            ..self
44        }
45    }
46
47    pub fn is_required(&self) -> bool {
48        self.required
49    }
50
51    pub fn key(&self) -> &str {
52        self.key.as_ref()
53    }
54
55    pub fn default_value(&self) -> Option<MetaValue> {
56        self.default
57            .as_ref()
58            .map(ToString::to_string)
59            .map(MetaValue::String)
60    }
61}
62
63impl VariableMap {
64    pub fn insert(&mut self, var: Variable) {
65        self.data.insert(var.key.clone(), var);
66    }
67
68    pub fn get<K>(&self, key: &K) -> Option<&Variable>
69    where
70        K: AsRef<str>,
71    {
72        self.data.get(key.as_ref())
73    }
74
75    pub fn iter(&self) -> impl Iterator<Item = &Variable> {
76        self.data.values()
77    }
78
79    pub fn is_empty(&self) -> bool {
80        self.data.is_empty()
81    }
82}
mdbook_journal/journal/topic/variables.rs

mdbook_journal/journal/topic/
variables.rs
