codeviz_rust/
file_spec.rs

1use codeviz_common::ElementFormatter;
2use std::collections::BTreeSet;
3use super::*;
4
5#[derive(Debug, Clone)]
6pub struct FileSpec {
7    pub elements: Elements,
8}
9
10impl FileSpec {
11    pub fn new() -> FileSpec {
12        FileSpec { elements: Elements::new() }
13    }
14
15    pub fn push<E>(&mut self, element: E)
16    where
17        E: Into<Element>,
18    {
19        self.elements.push(element);
20    }
21
22    fn imports(&self) -> Option<Elements> {
23        let mut imports = BTreeSet::new();
24
25        self.elements.imports(&mut imports);
26
27        let modules: BTreeSet<(String, Option<String>)> = imports
28            .into_iter()
29            .map(|imported| (imported.module, imported.alias))
30            .collect();
31
32        if modules.is_empty() {
33            return None;
34        }
35
36        let mut elements = Elements::new();
37
38        for (module, alias) in modules {
39            let mut s = Statement::new();
40
41            s.push("use ");
42            s.push(&module);
43
44            if let Some(ref alias) = alias {
45                s.push(" as ");
46                s.push(alias);
47            }
48
49            s.push(";");
50
51            elements.push(s);
52        }
53
54        Some(elements)
55    }
56
57    pub fn format<W>(&self, out: &mut W) -> Result<()>
58    where
59        W: ::std::fmt::Write,
60    {
61        let mut elements = Elements::new();
62
63        if let Some(imports) = self.imports() {
64            elements.push(imports);
65        }
66
67        elements.push(self.elements.clone().join(Spacing));
68
69        let elements: Element = elements.clone().join(Spacing).into();
70        let mut extra = ();
71
72        elements.format(&mut ElementFormatter::new(out), &mut extra)?;
73        out.write_char('\n')?;
74
75        Ok(())
76    }
77}
78
79impl ImportReceiver for BTreeSet<ImportedName> {
80    fn receive(&mut self, name: &ImportedName) {
81        self.insert(name.clone());
82    }
83}
84
85impl ToString for FileSpec {
86    fn to_string(&self) -> String {
87        let mut s = String::new();
88        self.format(&mut s).unwrap();
89        s
90    }
91}
codeviz_rust/file_spec.rs

codeviz_rust/
file_spec.rs
