moxy-token 0.1.0

Rust token types/parsing/lexing
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

use super::LitFloat;
use crate::lit::Lit;
use crate::parser::{ParseError, ParseStream};
use crate::{LexError, Parse, Span, Spanner};

#[derive(Debug, Clone)]
#[cfg_attr(feature = "serde", derive(serde::Serialize), serde(into = "String"))]
pub struct LitF32 {
    value: f32,
    suffixed: bool,
    repr: Box<str>,
    span: Span,
}

impl LitF32 {
    #[inline]
    pub fn new(value: f32, suffixed: bool, span: Span) -> Self {
        let repr = if suffixed {
            format!("{value}f32").into_boxed_str()
        } else {
            format!("{value}").into_boxed_str()
        };

        Self {
            value,
            suffixed,
            repr,
            span,
        }
    }

    #[inline]
    pub(crate) fn from_parts(value: f32, suffixed: bool, repr: &str, span: Span) -> Self {
        Self {
            value,
            suffixed,
            repr: repr.into(),
            span,
        }
    }

    #[inline]
    pub fn value(&self) -> f32 {
        self.value
    }

    #[inline]
    pub fn suffixed(&self) -> bool {
        self.suffixed
    }

    #[inline]
    pub fn repr(&self) -> &str {
        &self.repr
    }

    #[inline]
    pub fn span(&self) -> Span {
        self.span
    }

    #[inline]
    pub fn set_span(&mut self, span: Span) {
        self.span = span;
    }
}

impl PartialEq for LitF32 {
    fn eq(&self, other: &Self) -> bool {
        self.value == other.value && self.suffixed == other.suffixed
    }
}

impl Eq for LitF32 {}

impl std::hash::Hash for LitF32 {
    fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
        self.repr.hash(state);
    }
}

impl std::fmt::Display for LitF32 {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        f.write_str(&self.repr)
    }
}

impl Spanner for LitF32 {
    fn span(&self) -> Span {
        self.span
    }
}

impl Parse for LitF32 {
    fn parse(stream: &mut ParseStream) -> Result<Self, ParseError> {
        let at = stream.span();

        match stream.parse::<Lit>()? {
            Lit::Float(LitFloat::F32(v)) => Ok(v),
            _ => Err(LexError::new(at).message("expected `f32` literal").into()),
        }
    }
}

impl From<LitF32> for LitFloat {
    fn from(value: LitF32) -> Self {
        Self::F32(value)
    }
}

impl From<LitF32> for Lit {
    fn from(value: LitF32) -> Self {
        Self::Float(LitFloat::F32(value))
    }
}

#[cfg(feature = "serde")]
impl From<LitF32> for String {
    fn from(value: LitF32) -> Self {
        value.repr.into_string()
    }
}