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

use crate::nodes::InnerNode;
use crate::nodes::InspectVec;
use crate::source::Range;
use crate::StringValue;
/// Represents a plain symbol literal (i.e. `:foo`)
#[derive(Debug, Clone, PartialEq)]
pub struct Sym {
    /// Value of the symbol literal
    ///
    /// Note that it's a `StringValue`, not a `String`.
    /// The reason is that you can get UTF-8 incompatible strings
    /// from a valid UTF-8 source using escape sequences like `"\xFF"`
    ///
    /// These "\", "x", "F", "F" chars are valid separately, but together
    /// they construct a char with code = 255 that is invalid for UTF-8.
    ///
    /// You can use `to_string_lossy` or `to_string` methods to get a raw symbol value.
    pub name: StringValue,
    /// Location of the symbol begin
    ///
    /// ```text
    /// :foo
    /// ~
    /// ```
    ///
    /// `None` if symbol is a label (`{ foo: 1 }`) or a part of the symbols array (`%i[foo bar baz]`)
    pub begin_l: Option<Range>,
    /// Location of the symbol end
    ///
    /// ```text
    /// { foo: 1 }
    ///      ~
    /// ```
    ///
    /// `None` if symbol is **not** a label (`:foo`) or a part of the symbols array (`%i[foo bar baz]`)
    pub end_l: Option<Range>,
    /// Location of the full expression
    ///
    /// ```text
    /// :foo
    /// ~~~~
    ///
    /// { foo: 1 }
    ///   ~~~~
    ///
    /// %i[foo]
    ///    ~~~
    /// ```
    pub expression_l: Range,
}


impl InnerNode for Sym {
    fn expression(&self) -> &Range {
        &self.expression_l
    }

    fn inspected_children(&self, indent: usize) -> Vec<String> {
        let mut result = InspectVec::new(indent);
        result.push_string_value(&self.name);
        result.strings()
    }

    fn str_type(&self) -> &'static str {
        "sym"
    }

    fn print_with_locs(&self) {
        println!("{}", self.inspect(0));
        self.expression_l.print("expression");
        if let Some(range) = &self.end_l {
            range.print("end");
        }
        if let Some(range) = &self.begin_l {
            range.print("begin");
        }
    }
}