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simplify parsing of hex numbers

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as suggested by @pickfire
This commit is contained in:
ConnorSkees 2020-06-17 06:09:32 -04:00
parent 51529d65ac
commit da8541ea75
1 changed files with 34 additions and 76 deletions
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110
src/parse/value.rs
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@ -554,83 +554,41 @@ impl<'a> Parser<'a> {
});
}
}
match s.len() {
3 => {
let v = match u16::from_str_radix(&s, 16) {
Ok(a) => a,
Err(_) => {
return Ok(Value::String(format!("#{}", s), QuoteKind::None)
.span(self.span_before))
}
};
let red = (((v & 0xf00) >> 8) * 0x11) as u8;
let green = (((v & 0x0f0) >> 4) * 0x11) as u8;
let blue = ((v & 0x00f) * 0x11) as u8;
Ok(
Value::Color(Box::new(Color::new(red, green, blue, 1, format!("#{}", s))))
.span(self.span_before),
)
let v = match u32::from_str_radix(&s, 16) {
Ok(a) => a,
Err(_) => {
return Ok(Value::String(format!("#{}", s), QuoteKind::None).span(self.span_before))
}
4 => {
let v = match u16::from_str_radix(&s, 16) {
Ok(a) => a,
Err(_) => {
return Ok(Value::String(format!("#{}", s), QuoteKind::None)
.span(self.span_before))
}
};
let red = (((v & 0xf000) >> 12) * 0x11) as u8;
let green = (((v & 0x0f00) >> 8) * 0x11) as u8;
let blue = (((v & 0x00f0) >> 4) * 0x11) as u8;
let alpha = ((v & 0x000f) * 0x11) as u8;
Ok(Value::Color(Box::new(Color::new(
red,
green,
blue,
alpha,
format!("#{}", s),
)))
.span(self.span_before))
}
6 => {
let v = match u32::from_str_radix(&s, 16) {
Ok(a) => a,
Err(_) => {
return Ok(Value::String(format!("#{}", s), QuoteKind::None)
.span(self.span_before))
}
};
let red = ((v & 0x00ff_0000) >> 16) as u8;
let green = ((v & 0x0000_ff00) >> 8) as u8;
let blue = (v & 0x0000_00ff) as u8;
Ok(
Value::Color(Box::new(Color::new(red, green, blue, 1, format!("#{}", s))))
.span(self.span_before),
)
}
8 => {
let v = match u32::from_str_radix(&s, 16) {
Ok(a) => a,
Err(_) => {
return Ok(Value::String(format!("#{}", s), QuoteKind::None)
.span(self.span_before))
}
};
let red = ((v & 0xff00_0000) >> 24) as u8;
let green = ((v & 0x00ff_0000) >> 16) as u8;
let blue = ((v & 0x0000_ff00) >> 8) as u8;
let alpha = (v & 0x0000_00ff) as u8;
Ok(Value::Color(Box::new(Color::new(
red,
green,
blue,
alpha,
format!("#{}", s),
)))
.span(self.span_before))
}
_ => Err(("Expected hex digit.", self.span_before).into()),
}
};
let (red, green, blue, alpha) = match s.len() {
3 => (
(((v & 0x0f00) >> 8) * 0x11) as u8,
(((v & 0x00f0) >> 4) * 0x11) as u8,
((v & 0x000f) * 0x11) as u8,
1,
),
4 => (
(((v & 0xf000) >> 12) * 0x11) as u8,
(((v & 0x0f00) >> 8) * 0x11) as u8,
(((v & 0x00f0) >> 4) * 0x11) as u8,
((v & 0x000f) * 0x11) as u8,
),
6 => (
((v & 0x00ff_0000) >> 16) as u8,
((v & 0x0000_ff00) >> 8) as u8,
(v & 0x0000_00ff) as u8,
1,
),
8 => (
((v & 0xff00_0000) >> 24) as u8,
((v & 0x00ff_0000) >> 16) as u8,
((v & 0x0000_ff00) >> 8) as u8,
(v & 0x0000_00ff) as u8,
),
_ => return Err(("Expected hex digit.", self.span_before).into()),
};
let color = Color::new(red, green, blue, alpha, format!("#{}", s));
Ok(Value::Color(Box::new(color)).span(self.span_before))
}
fn eat_calc_args(&mut self, buf: &mut String) -> SassResult<()> {