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
133
use super::*;
mod traits;
#[derive(Clone, Debug)]
pub enum UnitValue {
Number { n: f32, is_negative: bool },
Length(LengthUnit),
Keyword(String),
Arbitrary(TailwindArbitrary),
}
impl Display for UnitValue {
fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
match self {
Self::Number { n, .. } => write!(f, "{}", n.abs()),
Self::Length(n) => write!(f, "{}", n),
Self::Keyword(s) => write!(f, "{}", s),
Self::Arbitrary(s) => write!(f, "{}", s),
}
}
}
impl UnitValue {
pub fn px(x: f32) -> Self {
Self::Length(LengthUnit::px(x))
}
pub fn radio(a: u32, b: u32) -> Self {
Self::Length(LengthUnit::radio(a, b))
}
pub fn get_properties(&self, number: impl FnOnce(&f32) -> String) -> String {
match self {
Self::Number { n, .. } => number(n),
Self::Length(n) => n.get_properties(),
Self::Keyword(s) => s.to_string(),
Self::Arbitrary(s) => s.get_properties(),
}
}
pub fn get_properties_rem(&self) -> String {
self.get_properties(|f| format!("{}rem", f / 4.0))
}
pub fn write_negative(&self, f: &mut Formatter) -> std::fmt::Result {
match is_negative(self) {
true => write!(f, "-"),
false => write!(f, ""),
}
}
pub fn write_class(&self, f: &mut Formatter, before: &str) -> std::fmt::Result {
write!(f, "{}{}", before, self)
}
}
pub fn is_negative(value: &UnitValue) -> bool {
match *value {
UnitValue::Number { n, is_negative } if is_negative => n < 0.0,
_ => false,
}
}
impl UnitValue {
pub fn negative_parser(
id: &'static str,
check_valid: impl Fn(&str) -> bool,
is_length: bool,
is_integer: bool,
allow_fraction: bool,
) -> impl Fn(&[&str], &TailwindArbitrary, Negative) -> Result<Self> {
move |pattern: &[&str], arbitrary: &TailwindArbitrary, negative: Negative| {
let kind = match pattern {
[] => Self::parse_arbitrary(arbitrary)?,
[s] if check_valid(s) => Self::Keyword(s.to_string()),
[n] => Self::parse_number(n, negative, is_length, is_integer, allow_fraction)?,
_ => {
let msg = format!("Unknown {} instructions: {}", id, pattern.join("-"));
return Err(TailwindError::syntax_error(msg));
},
};
Ok(kind)
}
}
pub fn positive_parser(
id: &'static str,
check_valid: impl Fn(&str) -> bool,
is_length: bool,
is_integer: bool,
allow_fraction: bool,
) -> impl Fn(&[&str], &TailwindArbitrary) -> Result<Self> {
move |pattern: &[&str], arbitrary: &TailwindArbitrary| {
let kind = match pattern {
[] => Self::parse_arbitrary(arbitrary)?,
[s] if check_valid(s) => Self::Keyword(s.to_string()),
[n] => Self::parse_number(n, Negative::from(true), is_length, is_integer, allow_fraction)?,
_ => {
let msg = format!("Unknown {} instructions: {}", id, pattern.join("-"));
return Err(TailwindError::syntax_error(msg));
},
};
Ok(kind)
}
}
pub fn parse_arbitrary(arbitrary: &TailwindArbitrary) -> Result<Self> {
Ok(Self::Arbitrary(TailwindArbitrary::new(arbitrary)?))
}
pub fn parse_number(n: &str, negative: Negative, is_length: bool, is_integer: bool, can_be_fraction: bool) -> Result<Self> {
let a = TailwindArbitrary::from(n);
match is_length {
true => Self::maybe_length(&a, can_be_fraction),
false => Self::maybe_angle(&a),
}
.or_else(|_| Self::maybe_number(&a, negative, is_integer))
}
fn maybe_number(arbitrary: &TailwindArbitrary, negative: Negative, is_integer: bool) -> Result<Self> {
let mut n = match is_integer {
true => arbitrary.as_integer()? as f32,
false => arbitrary.as_float()?,
};
if negative.0 {
n = -n
};
Ok(Self::Number { n, is_negative: negative.0 })
}
fn maybe_length(arbitrary: &TailwindArbitrary, allow_fraction: bool) -> Result<Self> {
let n = match allow_fraction {
true => arbitrary.as_length_or_fraction(),
false => arbitrary.as_length(),
}?;
Ok(Self::Length(n))
}
fn maybe_angle(arbitrary: &TailwindArbitrary) -> Result<Self> {
Ok(Self::Length(arbitrary.as_angle()?))
}
}
