rstgen 0.1.4

Even simpler code generation for Rust.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132

//! Data structure for interfaces.

use super::method::Method;
use super::modifier::Modifier;
use cons::Cons;
use into_tokens::IntoTokens;
use java::Java;
use tokens::Tokens;

/// Model for Java Interfaces.
#[derive(Debug, Clone)]
pub struct Interface<'el> {
    /// Interface modifiers.
    pub modifiers: Vec<Modifier>,
    /// Declared methods.
    pub methods: Vec<Method<'el>>,
    /// Extra body (added to end of interface).
    pub body: Tokens<'el, Java<'el>>,
    /// What this interface extends.
    pub extends: Tokens<'el, Java<'el>>,
    /// Generic parameters.
    pub parameters: Tokens<'el, Java<'el>>,
    /// Annotations for the constructor.
    annotations: Tokens<'el, Java<'el>>,
    /// Name of interface.
    name: Cons<'el>,
}

impl<'el> Interface<'el> {
    /// Build a new empty interface.
    pub fn new<N>(name: N) -> Interface<'el>
    where
        N: Into<Cons<'el>>,
    {
        Interface {
            modifiers: vec![Modifier::Public],
            methods: vec![],
            body: Tokens::new(),
            extends: Tokens::new(),
            parameters: Tokens::new(),
            annotations: Tokens::new(),
            name: name.into(),
        }
    }

    /// Push an annotation.
    pub fn annotation<A>(&mut self, annotation: A)
    where
        A: IntoTokens<'el, Java<'el>>,
    {
        self.annotations.push(annotation.into_tokens());
    }

    /// Name of interface.
    pub fn name(&self) -> Cons<'el> {
        self.name.clone()
    }
}

into_tokens_impl_from!(Interface<'el>, Java<'el>);

impl<'el> IntoTokens<'el, Java<'el>> for Interface<'el> {
    fn into_tokens(self) -> Tokens<'el, Java<'el>> {
        let mut sig = Tokens::new();

        sig.extend(self.modifiers.into_tokens());

        sig.append("interface");

        sig.append({
            let mut n = Tokens::new();
            n.append(self.name);

            if !self.parameters.is_empty() {
                n.append("<");
                n.append(self.parameters.join(", "));
                n.append(">");
            }

            n
        });

        if !self.extends.is_empty() {
            sig.append("extends");
            sig.append(self.extends.join(", "));
        }

        let mut s = Tokens::new();

        if !self.annotations.is_empty() {
            s.push(self.annotations);
        }

        s.push(toks![sig.join_spacing(), " {"]);
        s.nested({
            let mut body = Tokens::new();

            if !self.methods.is_empty() {
                for method in self.methods {
                    body.push(method);
                }
            }

            body.extend(self.body);
            body.join_line_spacing()
        });
        s.push("}");

        s
    }
}

#[cfg(test)]
mod tests {
    use super::Interface;
    use java::local;
    use java::Java;
    use tokens::Tokens;

    #[test]
    fn test_vec() {
        let mut i = Interface::new("Foo");
        i.parameters.append("T");
        i.extends = local("Super").into();

        let t: Tokens<Java> = i.into();

        let s = t.to_string();
        let out = s.as_ref().map(|s| s.as_str());
        assert_eq!(Ok("public interface Foo<T> extends Super {\n}"), out);
    }
}