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

use crate::IncludeToken;
use crate::{wr, ParseContainer};
use nom::branch::alt;
use nom::character::complete::{line_ending, space0};
use nom::combinator::eof;
use nom::sequence::tuple;
use nom::IResult;

/// `!include foo.puml` or `!include bar.iuml!buz`
#[derive(Clone, Debug)]
pub struct IncludeLine {
    token: IncludeToken,
}

impl IncludeLine {
    /// parse like `" !include foo.puml\n"`, `"!include  bar.iuml!buz \n"`
    pub fn parse(input: ParseContainer) -> IResult<ParseContainer, (Vec<ParseContainer>, Self)> {
        let (input, parsed) = tuple((
            wr!(space0),
            IncludeToken::parse,
            wr!(space0),
            alt((wr!(eof), wr!(line_ending))),
        ))(input)?;

        let (token_raws, token_parsed) = parsed.1;

        let ret0 = [parsed.0]
            .into_iter()
            .chain(token_raws)
            .chain([parsed.2, parsed.3])
            .collect();

        let ret1 = Self {
            token: token_parsed,
        };

        Ok((input, (ret0, ret1)))
    }

    pub fn token(&self) -> IncludeToken {
        self.token.clone()
    }

    pub fn filepath(&self) -> &str {
        self.token.filepath()
    }

    pub fn index(&self) -> Option<usize> {
        self.token.index()
    }

    pub fn id(&self) -> Option<&str> {
        self.token.id()
    }
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn test_parse_start_line() -> anyhow::Result<()> {
        let testdata = " !include foo.puml\n";
        let (rest, (parsed, IncludeLine { token })) = IncludeLine::parse(testdata.into())?;
        assert_eq!(rest, "");
        assert_eq!(testdata, parsed.join(""));
        assert_eq!(token.filepath(), "foo.puml");
        assert_eq!(token.index(), None);
        assert_eq!(token.id(), None);

        let testdata = " !include bar.puml!1\n";
        let (rest, (parsed, IncludeLine { token })) = IncludeLine::parse(testdata.into())?;
        assert_eq!(rest, "");
        assert_eq!(testdata, parsed.join(""));
        assert_eq!(token.filepath(), "bar.puml");
        assert_eq!(token.index(), Some(1));
        assert_eq!(token.id(), Some("1"));

        let testdata = "\t !include buz.puml!qux\n";
        let (rest, (parsed, IncludeLine { token })) = IncludeLine::parse(testdata.into())?;
        assert_eq!(rest, "");
        assert_eq!(testdata, parsed.join(""));
        assert_eq!(token.filepath(), "buz.puml");
        assert_eq!(token.index(), None);
        assert_eq!(token.id(), Some("qux"));

        Ok(())
    }
}