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reduce nesting in ident parsing

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This commit is contained in:
ConnorSkees 2020-04-30 16:02:40 -04:00
parent fda95683ce
commit a6e03e4ae1
2 changed files with 66 additions and 68 deletions
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2
src/color/name.rs
View File

@ -4,7 +4,7 @@
use bimap::BiMap;
use once_cell::sync::Lazy;
pub(crate) static NAMED_COLORS: Lazy<BiMap<&str, [u8; 4]>> = Lazy::new(|| {
pub(crate) static NAMED_COLORS: Lazy<BiMap<&'static str, [u8; 4]>> = Lazy::new(|| {
let mut m = BiMap::with_capacity(150);
m.insert("aliceblue", [0xF0, 0xF8, 0xFF, 0xFF]);
m.insert("antiquewhite", [0xFA, 0xEB, 0xD7, 0xFF]);

132
src/value/parse.rs
View File

@ -502,6 +502,7 @@ impl Value {
super_selector: &Selector,
) -> SassResult<IntermediateValue> {
let Spanned { node: mut s, span } = eat_ident(toks, scope, super_selector)?;
if s == "progid" && toks.peek().is_some() && toks.peek().unwrap().kind == ':' {
toks.next();
s.push(':');
@ -511,79 +512,76 @@ impl Value {
span,
}));
}
match toks.peek() {
Some(Token { kind: '(', .. }) => {
toks.next();
let func = match scope.get_fn(Spanned {
node: s.clone(),
span,
}) {
Ok(f) => f,
Err(_) => match GLOBAL_FUNCTIONS.get(s.replace('_', "-").as_str()) {
Some(f) => {
return Ok(IntermediateValue::Value(Spanned {
node: f.0(eat_call_args(toks)?, scope, super_selector)?,
span,
}))
}
None => {
match s.as_str() {
"calc" | "element" | "expression" => {
s.push_str(&eat_calc_args(toks, scope, super_selector)?)
}
// "min" => {}
// "max" => {}
"url" => match try_eat_url(toks, scope, super_selector)? {
Some(val) => s = val,
None => s.push_str(
&eat_call_args(toks)?
.to_css_string(scope, super_selector)?,
),
},
_ => s.push_str(
if let Some(Token { kind: '(', .. }) = toks.peek() {
toks.next();
let func = match scope.get_fn(Spanned {
node: s.clone(),
span,
}) {
Ok(f) => f,
Err(_) => match GLOBAL_FUNCTIONS.get(s.replace('_', "-").as_str()) {
Some(f) => {
return Ok(IntermediateValue::Value(Spanned {
node: f.0(eat_call_args(toks)?, scope, super_selector)?,
span,
}))
}
None => {
match s.to_ascii_lowercase().as_str() {
"calc" | "element" | "expression" => {
s.push_str(&eat_calc_args(toks, scope, super_selector)?)
}
// "min" => {}
// "max" => {}
"url" => match try_eat_url(toks, scope, super_selector)? {
Some(val) => s = val,
None => s.push_str(
&eat_call_args(toks)?.to_css_string(scope, super_selector)?,
),
}
return Ok(IntermediateValue::Value(Spanned {
node: Value::Ident(s, QuoteKind::None),
span,
}));
},
_ => s.push_str(
&eat_call_args(toks)?.to_css_string(scope, super_selector)?,
),
}
},
};
Ok(IntermediateValue::Value(
func.eval(eat_call_args(toks)?, scope, super_selector)?
.span(span),
))
}
_ => {
if let Some(c) = NAMED_COLORS.get_by_left(&s.as_str()) {
Ok(IntermediateValue::Value(Spanned {
node: Value::Color(Box::new(Color::new(c[0], c[1], c[2], c[3], s))),
span,
}))
} else {
Ok(match s.to_ascii_lowercase().as_str() {
"true" => IntermediateValue::Value(Value::True.span(span)),
"false" => IntermediateValue::Value(Value::False.span(span)),
"null" => IntermediateValue::Value(Value::Null.span(span)),
"not" => IntermediateValue::Op(Spanned {
node: Op::Not,
span,
}),
"and" => IntermediateValue::Op(Spanned {
node: Op::And,
span,
}),
"or" => IntermediateValue::Op(Spanned { node: Op::Or, span }),
_ => IntermediateValue::Value(Spanned {
return Ok(IntermediateValue::Value(Spanned {
node: Value::Ident(s, QuoteKind::None),
span,
}),
})
}
}
}));
}
},
};
return Ok(IntermediateValue::Value(
func.eval(eat_call_args(toks)?, scope, super_selector)?
.span(span),
));
}
if let Some(c) = NAMED_COLORS.get_by_left(&s.as_str()) {
return Ok(IntermediateValue::Value(Spanned {
node: Value::Color(Box::new(Color::new(c[0], c[1], c[2], c[3], s))),
span,
}));
}
Ok(match s.to_ascii_lowercase().as_str() {
"true" => IntermediateValue::Value(Value::True.span(span)),
"false" => IntermediateValue::Value(Value::False.span(span)),
"null" => IntermediateValue::Value(Value::Null.span(span)),
"not" => IntermediateValue::Op(Spanned {
node: Op::Not,
span,
}),
"and" => IntermediateValue::Op(Spanned {
node: Op::And,
span,
}),
"or" => IntermediateValue::Op(Spanned { node: Op::Or, span }),
_ => IntermediateValue::Value(Spanned {
node: Value::Ident(s, QuoteKind::None),
span,
}),
})
}
fn parse_intermediate_value<I: Iterator<Item = Token>>(