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support the @use ... as ...; syntax

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This commit is contained in:
Connor Skees 2020-07-26 13:36:01 -04:00
parent eeb0b0a924
commit 0916dcc5bd
2 changed files with 89 additions and 23 deletions
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79
src/parse/mod.rs
View File

@ -149,32 +149,67 @@ impl<'a> Parser<'a> {
let Spanned { node: module, span } = self.parse_quoted_string(quote)?;
let module = module.unquote().to_css_string(span)?;
if let Some(Token { kind: ';', .. }) = self.toks.peek() {
self.whitespace_or_comment();
let mut module_name: Option<String> = None;
match self.toks.peek() {
Some(Token { kind: ';', .. }) => {
self.toks.next();
} else {
todo!()
}
Some(Token { kind: 'a', .. }) | Some(Token { kind: 'A', .. }) => {
let mut ident =
peek_ident_no_interpolation(self.toks, false, self.span_before)?;
ident.node.make_ascii_lowercase();
if ident.node != "as" {
return Err(("expected \";\".", ident.span).into());
}
self.whitespace_or_comment();
let name = self.parse_identifier_no_interpolation(false)?;
module_name = Some(name.node);
if !matches!(self.toks.next(), Some(Token { kind: ';', .. })) {
return Err(("expected \";\".", name.span).into());
}
}
Some(Token { kind: 'w', .. }) | Some(Token { kind: 'W', .. }) => {
todo!("with")
}
Some(..) | None => return Err(("expected \";\".", span).into()),
}
match module.as_ref() {
"sass:color" => self
.modules
.insert("color".to_owned(), declare_module_color()),
"sass:list" => self
.modules
.insert("list".to_owned(), declare_module_list()),
"sass:map" => self.modules.insert("map".to_owned(), declare_module_map()),
"sass:math" => self
.modules
.insert("math".to_owned(), declare_module_math()),
"sass:meta" => self
.modules
.insert("meta".to_owned(), declare_module_meta()),
"sass:selector" => self
.modules
.insert("selector".to_owned(), declare_module_selector()),
"sass:string" => self
.modules
.insert("string".to_owned(), declare_module_string()),
"sass:color" => self.modules.insert(
module_name.unwrap_or("color".to_owned()),
declare_module_color(),
),
"sass:list" => self.modules.insert(
module_name.unwrap_or("list".to_owned()),
declare_module_list(),
),
"sass:map" => self.modules.insert(
module_name.unwrap_or("map".to_owned()),
declare_module_map(),
),
"sass:math" => self.modules.insert(
module_name.unwrap_or("math".to_owned()),
declare_module_math(),
),
"sass:meta" => self.modules.insert(
module_name.unwrap_or("meta".to_owned()),
declare_module_meta(),
),
"sass:selector" => self.modules.insert(
module_name.unwrap_or("selector".to_owned()),
declare_module_selector(),
),
"sass:string" => self.modules.insert(
module_name.unwrap_or("string".to_owned()),
declare_module_string(),
),
_ => todo!("@use not yet implemented"),
};
}

31
tests/use.rs
View File

@ -10,3 +10,34 @@ error!(
",
"Error: @use rules must be written before any other rules."
);
error!(
interpolation_in_as_identifier,
"@use \"sass:math\" as m#{a}th;",
"Error: expected \";\"."
);
error!(
use_as_quoted_string,
"@use \"sass:math\" as \"math\";",
"Error: Expected identifier."
);
error!(
use_as_missing_s,
"@use \"sass:math\" a math;",
"Error: expected \";\"."
);
test!(
use_as,
"@use \"sass:math\" as foo;
a {
color: foo.clamp(0, 1, 2);
}",
"a {\n color: 1;\n}\n"
);
test!(
use_as_uppercase,
"@use \"sass:math\" AS foo;
a {
color: foo.clamp(0, 1, 2);
}",
"a {\n color: 1;\n}\n"
);