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Connect sass atmedia with css atmedia.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,139 @@ | ||
| use super::atrule::AtRuleBodyItem; | ||
| use super::Value; | ||
| use crate::output::{CssBuf, Format}; | ||
| use crate::parser::{css::media, input_span}; | ||
| use crate::value::Operator; | ||
| use crate::ParseError; | ||
| use std::io::{self, Write}; | ||
|
|
||
| /// An `@media` rule in css. | ||
| #[derive(Clone, Debug)] | ||
| pub struct MediaRule { | ||
| args: MediaArgs, | ||
| body: Vec<AtRuleBodyItem>, | ||
| } | ||
|
|
||
| impl MediaRule { | ||
| pub(crate) fn new(args: MediaArgs, body: Vec<AtRuleBodyItem>) -> Self { | ||
| MediaRule { args, body } | ||
| } | ||
| pub(crate) fn write(&self, buf: &mut CssBuf) -> io::Result<()> { | ||
| if !self.body.is_empty() { | ||
| buf.do_indent_no_nl(); | ||
| buf.add_str("@media "); | ||
| self.args.write(buf)?; | ||
| buf.start_block(); | ||
| for item in &self.body { | ||
| item.write(buf)?; | ||
| } | ||
| buf.end_block(); | ||
| } | ||
| Ok(()) | ||
| } | ||
| } | ||
|
|
||
| /// The media selection argument of an `@media` rule. | ||
| #[derive(Clone, Debug)] | ||
| pub enum MediaArgs { | ||
| /// A named media, such as `all` or `screen`. | ||
| Name(String), | ||
| /// `(cond: value)` media. | ||
| Condition(String, Value), | ||
| /// A condition / range, such as `(witdh < 14em)` or | ||
| /// `(14em <= width < 80em)`. | ||
| Range(Vec<(Operator, Value)>), | ||
| /// Any media subquery in parenthesis. | ||
| Paren(Box<MediaArgs>), | ||
| /// Any media subquery in square brackets. | ||
| Bracket(Box<MediaArgs>), | ||
| /// unary operation. | ||
| /// The operator (`not`, `only`) is a string to preserve case. | ||
| UnaryOp(String, Box<MediaArgs>), | ||
| /// a and b and c media. | ||
| Comma(Vec<MediaArgs>), | ||
| /// a and b and c media. | ||
| And(Vec<MediaArgs>), | ||
| /// a or b or c media. | ||
| Or(Vec<MediaArgs>), | ||
| } | ||
|
|
||
| impl MediaArgs { | ||
| pub(crate) fn write(&self, buf: &mut CssBuf) -> io::Result<()> { | ||
| match self { | ||
| MediaArgs::Name(name) => write!(buf, "{name}")?, | ||
| MediaArgs::UnaryOp(op, a) => { | ||
| buf.add_str(op); | ||
| buf.add_str(" "); | ||
| a.write(buf)?; | ||
| } | ||
| MediaArgs::Condition(c, v) => { | ||
| write!(buf, "({c}: {})", v.format(buf.format()))? | ||
| } | ||
| MediaArgs::Comma(args) => { | ||
| if let Some((first, rest)) = args.split_first() { | ||
| first.write(buf)?; | ||
| for arg in rest { | ||
| buf.add_one(", ", ","); | ||
| arg.write(buf)?; | ||
| } | ||
| } | ||
| } | ||
| MediaArgs::And(args) => { | ||
| if let Some((first, rest)) = args.split_first() { | ||
| first.write(buf)?; | ||
| for arg in rest { | ||
| buf.add_str(" and "); | ||
| arg.write(buf)?; | ||
| } | ||
| } | ||
| } | ||
| MediaArgs::Or(args) => { | ||
| if let Some((first, rest)) = args.split_first() { | ||
| first.write(buf)?; | ||
| for arg in rest { | ||
| buf.add_str(" or "); | ||
| arg.write(buf)?; | ||
| } | ||
| } | ||
| } | ||
| MediaArgs::Paren(a) => { | ||
| buf.add_str("("); | ||
| a.write(buf)?; | ||
| buf.add_str(")"); | ||
| } | ||
| MediaArgs::Bracket(a) => { | ||
| buf.add_str("["); | ||
| a.write(buf)?; | ||
| buf.add_str("]"); | ||
| } | ||
| MediaArgs::Range(v) => { | ||
| buf.add_str("("); | ||
| if let Some(((_op, first), rest)) = v.split_first() { | ||
| buf.add_str( | ||
| &first.to_string(buf.format()).replace('\n', " "), | ||
| ); | ||
| for (op, val) in rest { | ||
| write!(buf, " {} ", op)?; | ||
| buf.add_str( | ||
| &val.to_string(buf.format()).replace('\n', " "), | ||
| ); | ||
| } | ||
| } | ||
| buf.add_str(")"); | ||
| } | ||
| } | ||
| Ok(()) | ||
| } | ||
| } | ||
|
|
||
| // Note: I'm not sure printing and parsing is the best way to do this, | ||
| // but then, I'm not sure media arguments in scss are best represented | ||
| // as a Value either. | ||
| impl TryFrom<Value> for MediaArgs { | ||
| type Error = crate::Error; | ||
|
|
||
| fn try_from(value: Value) -> Result<Self, Self::Error> { | ||
| let value = value.format(Format::default()).to_string(); | ||
| Ok(ParseError::check(media::args(input_span(value).borrow()))?) | ||
| } | ||
| } |
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