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container.rs
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//! The `@container` rule.
use cssparser::*;
use super::Location;
use super::{CssRuleList, MinifyContext};
use crate::error::{MinifyError, ParserError, PrinterError};
use crate::media_query::{
define_query_features, operation_to_css, parse_query_condition, to_css_with_parens_if_needed, FeatureToCss,
MediaFeatureType, Operator, QueryCondition, QueryConditionFlags, QueryFeature, ValueType,
};
use crate::parser::DefaultAtRule;
use crate::printer::Printer;
use crate::properties::{Property, PropertyId};
#[cfg(feature = "serde")]
use crate::serialization::ValueWrapper;
use crate::targets::{Features, Targets};
use crate::traits::{Parse, ToCss};
use crate::values::ident::CustomIdent;
#[cfg(feature = "visitor")]
use crate::visitor::Visit;
/// A [@container](https://drafts.csswg.org/css-contain-3/#container-rule) rule.
#[derive(Debug, PartialEq, Clone)]
#[cfg_attr(feature = "visitor", derive(Visit))]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
#[cfg_attr(feature = "jsonschema", derive(schemars::JsonSchema))]
#[cfg_attr(feature = "into_owned", derive(static_self::IntoOwned))]
pub struct ContainerRule<'i, R = DefaultAtRule> {
/// The name of the container.
#[cfg_attr(feature = "serde", serde(borrow))]
pub name: Option<ContainerName<'i>>,
/// The container condition.
pub condition: ContainerCondition<'i>,
/// The rules within the `@container` rule.
pub rules: CssRuleList<'i, R>,
/// The location of the rule in the source file.
#[cfg_attr(feature = "visitor", skip_visit)]
pub loc: Location,
}
/// Represents a container condition.
#[derive(Clone, Debug, PartialEq)]
#[cfg_attr(feature = "visitor", derive(Visit))]
#[cfg_attr(feature = "into_owned", derive(static_self::IntoOwned))]
#[cfg_attr(
feature = "serde",
derive(serde::Serialize, serde::Deserialize),
serde(tag = "type", rename_all = "kebab-case")
)]
#[cfg_attr(feature = "jsonschema", derive(schemars::JsonSchema))]
pub enum ContainerCondition<'i> {
/// A size container feature, implicitly parenthesized.
#[cfg_attr(feature = "serde", serde(borrow, with = "ValueWrapper::<ContainerSizeFeature>"))]
Feature(ContainerSizeFeature<'i>),
/// A negation of a condition.
#[cfg_attr(feature = "visitor", skip_type)]
#[cfg_attr(feature = "serde", serde(with = "ValueWrapper::<Box<ContainerCondition>>"))]
Not(Box<ContainerCondition<'i>>),
/// A set of joint operations.
#[cfg_attr(feature = "visitor", skip_type)]
Operation {
/// The operator for the conditions.
operator: Operator,
/// The conditions for the operator.
conditions: Vec<ContainerCondition<'i>>,
},
/// A style query.
#[cfg_attr(feature = "serde", serde(borrow, with = "ValueWrapper::<StyleQuery>"))]
Style(StyleQuery<'i>),
}
/// A container query size feature.
pub type ContainerSizeFeature<'i> = QueryFeature<'i, ContainerSizeFeatureId>;
define_query_features! {
/// A container query size feature identifier.
pub enum ContainerSizeFeatureId {
/// The [width](https://w3c.github.io/csswg-drafts/css-contain-3/#width) size container feature.
"width": Width = Length,
/// The [height](https://w3c.github.io/csswg-drafts/css-contain-3/#height) size container feature.
"height": Height = Length,
/// The [inline-size](https://w3c.github.io/csswg-drafts/css-contain-3/#inline-size) size container feature.
"inline-size": InlineSize = Length,
/// The [block-size](https://w3c.github.io/csswg-drafts/css-contain-3/#block-size) size container feature.
"block-size": BlockSize = Length,
/// The [aspect-ratio](https://w3c.github.io/csswg-drafts/css-contain-3/#aspect-ratio) size container feature.
"aspect-ratio": AspectRatio = Ratio,
/// The [orientation](https://w3c.github.io/csswg-drafts/css-contain-3/#orientation) size container feature.
"orientation": Orientation = Ident,
}
}
impl FeatureToCss for ContainerSizeFeatureId {
fn to_css_with_prefix<W>(&self, prefix: &str, dest: &mut Printer<W>) -> Result<(), PrinterError>
where
W: std::fmt::Write,
{
dest.write_str(prefix)?;
self.to_css(dest)
}
}
/// Represents a style query within a container condition.
#[derive(Clone, Debug, PartialEq)]
#[cfg_attr(feature = "visitor", derive(Visit))]
#[cfg_attr(feature = "into_owned", derive(static_self::IntoOwned))]
#[cfg_attr(
feature = "serde",
derive(serde::Serialize, serde::Deserialize),
serde(tag = "type", rename_all = "kebab-case")
)]
#[cfg_attr(feature = "jsonschema", derive(schemars::JsonSchema))]
pub enum StyleQuery<'i> {
/// A style feature, implicitly parenthesized.
#[cfg_attr(feature = "serde", serde(borrow, with = "ValueWrapper::<Property>"))]
Feature(Property<'i>),
/// A negation of a condition.
#[cfg_attr(feature = "visitor", skip_type)]
#[cfg_attr(feature = "serde", serde(with = "ValueWrapper::<Box<StyleQuery>>"))]
Not(Box<StyleQuery<'i>>),
/// A set of joint operations.
#[cfg_attr(feature = "visitor", skip_type)]
Operation {
/// The operator for the conditions.
operator: Operator,
/// The conditions for the operator.
conditions: Vec<StyleQuery<'i>>,
},
}
impl<'i> QueryCondition<'i> for ContainerCondition<'i> {
#[inline]
fn parse_feature<'t>(input: &mut Parser<'i, 't>) -> Result<Self, ParseError<'i, ParserError<'i>>> {
let feature = QueryFeature::parse(input)?;
Ok(Self::Feature(feature))
}
#[inline]
fn create_negation(condition: Box<ContainerCondition<'i>>) -> Self {
Self::Not(condition)
}
#[inline]
fn create_operation(operator: Operator, conditions: Vec<Self>) -> Self {
Self::Operation { operator, conditions }
}
fn parse_style_query<'t>(input: &mut Parser<'i, 't>) -> Result<Self, ParseError<'i, ParserError<'i>>> {
input.parse_nested_block(|input| {
if let Ok(res) = input.try_parse(|input| parse_query_condition(input, QueryConditionFlags::ALLOW_OR)) {
return Ok(Self::Style(res));
}
Ok(Self::Style(StyleQuery::parse_feature(input)?))
})
}
fn needs_parens(&self, parent_operator: Option<Operator>, targets: &Targets) -> bool {
match self {
ContainerCondition::Not(_) => true,
ContainerCondition::Operation { operator, .. } => Some(*operator) != parent_operator,
ContainerCondition::Feature(f) => f.needs_parens(parent_operator, targets),
ContainerCondition::Style(_) => false,
}
}
}
impl<'i> QueryCondition<'i> for StyleQuery<'i> {
#[inline]
fn parse_feature<'t>(input: &mut Parser<'i, 't>) -> Result<Self, ParseError<'i, ParserError<'i>>> {
8000
let property_id = PropertyId::parse(input)?;
input.expect_colon()?;
input.skip_whitespace();
let feature = Self::Feature(Property::parse(property_id, input, &Default::default())?);
let _ = input.try_parse(|input| parse_important(input));
Ok(feature)
}
#[inline]
fn create_negation(condition: Box<Self>) -> Self {
Self::Not(condition)
}
#[inline]
fn create_operation(operator: Operator, conditions: Vec<Self>) -> Self {
Self::Operation { operator, conditions }
}
fn needs_parens(&self, parent_operator: Option<Operator>, _targets: &Targets) -> bool {
match self {
StyleQuery::Not(_) => true,
StyleQuery::Operation { operator, .. } => Some(*operator) != parent_operator,
StyleQuery::Feature(_) => true,
}
}
}
impl<'i> Parse<'i> for ContainerCondition<'i> {
fn parse<'t>(input: &mut Parser<'i, 't>) -> Result<Self, ParseError<'i, ParserError<'i>>> {
parse_query_condition(input, QueryConditionFlags::ALLOW_OR | QueryConditionFlags::ALLOW_STYLE)
}
}
impl<'i> ToCss for ContainerCondition<'i> {
fn to_css<W>(&self, dest: &mut Printer<W>) -> Result<(), PrinterError>
where
W: std::fmt::Write,
{
match *self {
ContainerCondition::Feature(ref f) => f.to_css(dest),
ContainerCondition::Not(ref c) => {
dest.write_str("not ")?;
to_css_with_parens_if_needed(&**c, dest, c.needs_parens(None, &dest.targets))
}
ContainerCondition::Operation {
ref conditions,
operator,
} => operation_to_css(operator, conditions, dest),
ContainerCondition::Style(ref query) => {
dest.write_str("style(")?;
query.to_css(dest)?;
dest.write_char(')')
}
}
}
}
impl<'i> ToCss for StyleQuery<'i> {
fn to_css<W>(&self, dest: &mut Printer<W>) -> Result<(), PrinterError>
where
W: std::fmt::Write,
{
match *self {
StyleQuery::Feature(ref f) => f.to_css(dest, false),
StyleQuery::Not(ref c) => {
dest.write_str("not ")?;
to_css_with_parens_if_needed(&**c, dest, c.needs_parens(None, &dest.targets))
}
StyleQuery::Operation {
ref conditions,
operator,
} => operation_to_css(operator, conditions, dest),
}
}
}
/// A [`<container-name>`](https://drafts.csswg.org/css-contain-3/#typedef-container-name) in a `@container` rule.
#[derive(Debug, Clone, PartialEq)]
#[cfg_attr(feature = "visitor", derive(Visit))]
#[cfg_attr(feature = "into_owned", derive(static_self::IntoOwned))]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize), serde(transparent))]
#[cfg_attr(feature = "jsonschema", derive(schemars::JsonSchema))]
pub struct ContainerName<'i>(#[cfg_attr(feature = "serde", serde(borrow))] pub CustomIdent<'i>);
impl<'i> Parse<'i> for ContainerName<'i> {
fn parse<'t>(input: &mut Parser<'i, 't>) -> Result<Self, ParseError<'i, ParserError<'i>>> {
let ident = CustomIdent::parse(input)?;
match_ignore_ascii_case! { &*ident.0,
"none" | "and" | "not" | "or" => Err(input.new_unexpected_token_error(Token::Ident(ident.0.as_ref().to_owned().into()))),
_ => Ok(ContainerName(ident))
}
}
}
impl<'i> ToCss for ContainerName<'i> {
fn to_css<W>(&self, dest: &mut Printer<W>) -> Result<(), PrinterError>
where
W: std::fmt::Write,
{
// Container name should not be hashed
// https://github.com/vercel/next.js/issues/71233
self.0.to_css_with_options(
dest,
match &dest.css_module {
Some(css_module) => css_module.config.container,
None => false,
},
)
}
}
impl<'i, T: Clone> ContainerRule<'i, T> {
pub(crate) fn minify(
&mut self,
context: &mut MinifyContext<'_, 'i>,
parent_is_unused: bool,
) -> Result<bool, MinifyError> {
self.rules.minify(context, parent_is_unused)?;
Ok(self.rules.0.is_empty())
}
}
impl<'a, 'i, T: ToCss> ToCss for ContainerRule<'i, T> {
fn to_css<W>(&self, dest: &mut Printer<W>) -> Result<(), PrinterError>
where
W: std::fmt::Write,
{
#[cfg(feature = "sourcemap")]
dest.add_mapping(self.loc);
dest.write_str("@container ")?;
if let Some(name) = &self.name {
name.to_css(dest)?;
dest.write_char(' ')?;
}
// Don't downlevel range syntax in container queries.
let exclude = dest.targets.exclude;
dest.targets.exclude.insert(Features::MediaQueries);
self.condition.to_css(dest)?;
dest.targets.exclude = exclude;
dest.whitespace()?;
dest.write_char('{')?;
dest.indent();
dest.newline()?;
self.rules.to_css(dest)?;
dest.dedent();
dest.newline()?;
dest.write_char('}')
}
}