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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
<%!
from data import Keyword, to_rust_ident, to_phys, to_camel_case, SYSTEM_FONT_LONGHANDS
from data import (LOGICAL_CORNERS, PHYSICAL_CORNERS, LOGICAL_SIDES,
PHYSICAL_SIDES, LOGICAL_SIZES, LOGICAL_AXES)
%>
<%def name="predefined_type(name, type, initial_value, parse_method='parse',
vector=False, none_value=None, initial_specified_value=None,
allow_quirks='No', **kwargs)">
<%def name="predefined_type_inner(name, type, initial_value, parse_method)">
#[allow(unused_imports)]
use app_units::Au;
#[allow(unused_imports)]
use crate::values::specified::AllowQuirks;
#[allow(unused_imports)]
use crate::Zero;
#[allow(unused_imports)]
use smallvec::SmallVec;
pub use crate::values::specified::${type} as SpecifiedValue;
pub mod computed_value {
pub use crate::values::computed::${type} as T;
}
% if initial_value:
#[inline] pub fn get_initial_value() -> computed_value::T { ${initial_value} }
% endif
% if initial_specified_value:
#[inline] pub fn get_initial_specified_value() -> SpecifiedValue { ${initial_specified_value} }
% endif
#[allow(unused_variables)]
#[inline]
pub fn parse<'i, 't>(
context: &ParserContext,
input: &mut Parser<'i, 't>,
) -> Result<SpecifiedValue, ParseError<'i>> {
% if allow_quirks != "No":
specified::${type}::${parse_method}_quirky(context, input, AllowQuirks::${allow_quirks})
% elif parse_method != "parse":
specified::${type}::${parse_method}(context, input)
% else:
<specified::${type} as crate::parser::Parse>::parse(context, input)
% endif
}
</%def>
% if vector:
<%call
expr="vector_longhand(name, predefined_type=type, allow_empty=not initial_value, none_value=none_value, **kwargs)"
>
${predefined_type_inner(name, type, initial_value, parse_method)}
% if caller:
${caller.body()}
% endif
</%call>
% else:
<%call expr="longhand(name, predefined_type=type, **kwargs)">
${predefined_type_inner(name, type, initial_value, parse_method)}
% if caller:
${caller.body()}
% endif
</%call>
% endif
</%def>
// The setup here is roughly:
//
// * UnderlyingList is the list that is stored in the computed value. This may
// be a shared ArcSlice if the property is inherited.
// * UnderlyingOwnedList is the list that is used for animation.
// * Specified values always use OwnedSlice, since it's more compact.
// * computed_value::List is just a convenient alias that you can use for the
// computed value list, since this is in the computed_value module.
//
// If simple_vector_bindings is true, then we don't use the complex iterator
// machinery and set_foo_from, and just compute the value like any other
// longhand.
<%def name="vector_longhand(name, vector_animation_type=None, allow_empty=False,
none_value=None, simple_vector_bindings=False, separator='Comma',
**kwargs)">
<%call expr="longhand(name, vector=True,
simple_vector_bindings=simple_vector_bindings, **kwargs)">
#[allow(unused_imports)]
use smallvec::SmallVec;
pub mod single_value {
#[allow(unused_imports)]
use cssparser::{Parser, BasicParseError};
#[allow(unused_imports)]
use crate::parser::{Parse, ParserContext};
#[allow(unused_imports)]
use crate::properties::ShorthandId;
#[allow(unused_imports)]
use selectors::parser::SelectorParseErrorKind;
#[allow(unused_imports)]
use style_traits::{ParseError, StyleParseErrorKind};
#[allow(unused_imports)]
use crate::values::computed::{Context, ToComputedValue};
#[allow(unused_imports)]
use crate::values::{computed, specified};
${caller.body()}
}
/// The definition of the computed value for ${name}.
pub mod computed_value {
#[allow(unused_imports)]
use crate::values::animated::ToAnimatedValue;
#[allow(unused_imports)]
use crate::values::resolved::ToResolvedValue;
pub use super::single_value::computed_value as single_value;
pub use self::single_value::T as SingleComputedValue;
% if not allow_empty:
use smallvec::SmallVec;
% endif
use crate::values::computed::ComputedVecIter;
<%
is_shared_list = allow_empty and \
data.longhands_by_name[name].style_struct.inherited
%>
// FIXME(emilio): Add an OwnedNonEmptySlice type, and figure out
// something for transition-name, which is the only remaining user
// of NotInitial.
pub type UnderlyingList<T> =
% if allow_empty:
% if data.longhands_by_name[name].style_struct.inherited:
crate::ArcSlice<T>;
% else:
crate::OwnedSlice<T>;
% endif
% else:
SmallVec<[T; 1]>;
% endif
pub type UnderlyingOwnedList<T> =
% if allow_empty:
crate::OwnedSlice<T>;
% else:
SmallVec<[T; 1]>;
% endif
/// The generic type defining the animated and resolved values for
/// this property.
///
/// Making this type generic allows the compiler to figure out the
/// animated value for us, instead of having to implement it
/// manually for every type we care about.
#[derive(Clone, Debug, MallocSizeOf, PartialEq, ToAnimatedValue, ToResolvedValue, ToCss)]
% if separator == "Comma":
#[css(comma)]
% endif
pub struct OwnedList<T>(
% if not allow_empty:
#[css(iterable)]
% else:
#[css(if_empty = "none", iterable)]
% endif
pub UnderlyingOwnedList<T>,
);
/// The computed value for this property.
% if not is_shared_list:
pub type ComputedList = OwnedList<single_value::T>;
pub use self::OwnedList as List;
% else:
pub use self::ComputedList as List;
#[derive(Clone, Debug, MallocSizeOf, PartialEq, ToCss)]
% if separator == "Comma":
#[css(comma)]
% endif
pub struct ComputedList(
% if not allow_empty:
#[css(iterable)]
% else:
#[css(if_empty = "none", iterable)]
% endif
% if is_shared_list:
#[ignore_malloc_size_of = "Arc"]
% endif
pub UnderlyingList<single_value::T>,
);
type ResolvedList = OwnedList<<single_value::T as ToResolvedValue>::ResolvedValue>;
impl ToResolvedValue for ComputedList {
type ResolvedValue = ResolvedList;
fn to_resolved_value(self, context: &crate::values::resolved::Context) -> Self::ResolvedValue {
OwnedList(
self.0
.iter()
.cloned()
.map(|v| v.to_resolved_value(context))
.collect()
)
}
fn from_resolved_value(resolved: Self::ResolvedValue) -> Self {
% if not is_shared_list:
use std::iter::FromIterator;
% endif
let iter =
resolved.0.into_iter().map(ToResolvedValue::from_resolved_value);
ComputedList(UnderlyingList::from_iter(iter))
}
}
% endif
% if simple_vector_bindings:
impl From<ComputedList> for UnderlyingList<single_value::T> {
#[inline]
fn from(l: ComputedList) -> Self {
l.0
}
}
impl From<UnderlyingList<single_value::T>> for ComputedList {
#[inline]
fn from(l: UnderlyingList<single_value::T>) -> Self {
List(l)
}
}
% endif
% if vector_animation_type:
use crate::values::animated::{Animate, ToAnimatedZero, Procedure, lists};
use crate::values::distance::{SquaredDistance, ComputeSquaredDistance};
// FIXME(emilio): For some reason rust thinks that this alias is
// unused, even though it's clearly used below?
#[allow(unused)]
type AnimatedList = OwnedList<<single_value::T as ToAnimatedValue>::AnimatedValue>;
% if is_shared_list:
impl ToAnimatedValue for ComputedList {
type AnimatedValue = AnimatedList;
fn to_animated_value(self, context: &crate::values::animated::Context) -> Self::AnimatedValue {
OwnedList(
self.0.iter().map(|v| v.clone().to_animated_value(context)).collect()
)
}
fn from_animated_value(animated: Self::AnimatedValue) -> Self {
let iter =
animated.0.into_iter().map(ToAnimatedValue::from_animated_value);
ComputedList(UnderlyingList::from_iter(iter))
}
}
% endif
impl ToAnimatedZero for AnimatedList {
fn to_animated_zero(&self) -> Result<Self, ()> { Err(()) }
}
impl Animate for AnimatedList {
fn animate(
&self,
other: &Self,
procedure: Procedure,
) -> Result<Self, ()> {
Ok(OwnedList(
lists::${vector_animation_type}::animate(&self.0, &other.0, procedure)?
))
}
}
impl ComputeSquaredDistance for AnimatedList {
fn compute_squared_distance(
&self,
other: &Self,
) -> Result<SquaredDistance, ()> {
lists::${vector_animation_type}::squared_distance(&self.0, &other.0)
}
}
% endif
/// The computed value, effectively a list of single values.
pub use self::ComputedList as T;
pub type Iter<'a, 'cx, 'cx_a> = ComputedVecIter<'a, 'cx, 'cx_a, super::single_value::SpecifiedValue>;
}
/// The specified value of ${name}.
#[derive(Clone, Debug, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToCss, ToShmem)]
% if none_value:
#[value_info(other_values = "none")]
% endif
% if separator == "Comma":
#[css(comma)]
% endif
pub struct SpecifiedValue(
% if not allow_empty:
#[css(iterable)]
% else:
#[css(if_empty = "none", iterable)]
% endif
pub crate::OwnedSlice<single_value::SpecifiedValue>,
);
pub fn get_initial_value() -> computed_value::T {
% if allow_empty:
computed_value::List(Default::default())
% else:
let mut v = SmallVec::new();
v.push(single_value::get_initial_value());
computed_value::List(v)
% endif
}
pub fn parse<'i, 't>(
context: &ParserContext,
input: &mut Parser<'i, 't>,
) -> Result<SpecifiedValue, ParseError<'i>> {
use style_traits::Separator;
% if allow_empty or none_value:
if input.try_parse(|input| input.expect_ident_matching("none")).is_ok() {
% if allow_empty:
return Ok(SpecifiedValue(Default::default()))
% else:
return Ok(SpecifiedValue(crate::OwnedSlice::from(vec![${none_value}])))
% endif
}
% endif
let v = style_traits::${separator}::parse(input, |parser| {
single_value::parse(context, parser)
})?;
Ok(SpecifiedValue(v.into()))
}
pub use self::single_value::SpecifiedValue as SingleSpecifiedValue;
% if not simple_vector_bindings and engine == "gecko":
impl SpecifiedValue {
fn compute_iter<'a, 'cx, 'cx_a>(
&'a self,
context: &'cx Context<'cx_a>,
) -> computed_value::Iter<'a, 'cx, 'cx_a> {
computed_value::Iter::new(context, &self.0)
}
}
% endif
impl ToComputedValue for SpecifiedValue {
type ComputedValue = computed_value::T;
#[inline]
fn to_computed_value(&self, context: &Context) -> computed_value::T {
% if not is_shared_list:
use std::iter::FromIterator;
% endif
computed_value::List(computed_value::UnderlyingList::from_iter(
self.0.iter().map(|i| i.to_computed_value(context))
))
}
#[inline]
fn from_computed_value(computed: &computed_value::T) -> Self {
let iter = computed.0.iter().map(ToComputedValue::from_computed_value);
SpecifiedValue(iter.collect())
}
}
</%call>
</%def>
<%def name="longhand(*args, **kwargs)">
<%
property = data.declare_longhand(*args, **kwargs)
if property is None:
return ""
%>
/// ${property.spec}
pub mod ${property.ident} {
#[allow(unused_imports)]
use cssparser::{Parser, BasicParseError, Token};
#[allow(unused_imports)]
use crate::parser::{Parse, ParserContext};
#[allow(unused_imports)]
use crate::properties::{UnparsedValue, ShorthandId};
#[allow(unused_imports)]
use crate::error_reporting::ParseErrorReporter;
#[allow(unused_imports)]
use crate::properties::longhands;
#[allow(unused_imports)]
use crate::properties::{LonghandId, LonghandIdSet};
#[allow(unused_imports)]
use crate::properties::{CSSWideKeyword, ComputedValues, PropertyDeclaration};
#[allow(unused_imports)]
use crate::properties::style_structs;
#[allow(unused_imports)]
use selectors::parser::SelectorParseErrorKind;
#[allow(unused_imports)]
use servo_arc::Arc;
#[allow(unused_imports)]
use style_traits::{ParseError, StyleParseErrorKind};
#[allow(unused_imports)]
use crate::values::computed::{Context, ToComputedValue};
#[allow(unused_imports)]
use crate::values::{computed, generics, specified};
#[allow(unused_imports)]
use crate::Atom;
${caller.body()}
#[allow(unused_variables)]
pub unsafe fn cascade_property(
declaration: &PropertyDeclaration,
context: &mut computed::Context,
) {
% if property.logical:
declaration.debug_crash("Should physicalize before entering here");
% else:
context.for_non_inherited_property = ${"false" if property.style_struct.inherited else "true"};
% if property.logical_group:
debug_assert_eq!(
declaration.id().as_longhand().unwrap().logical_group(),
LonghandId::${property.camel_case}.logical_group(),
);
% else:
debug_assert_eq!(
declaration.id().as_longhand().unwrap(),
LonghandId::${property.camel_case},
);
% endif
let specified_value = match *declaration {
PropertyDeclaration::CSSWideKeyword(ref wk) => {
match wk.keyword {
% if not property.style_struct.inherited:
CSSWideKeyword::Unset |
% endif
CSSWideKeyword::Initial => {
% if not property.style_struct.inherited:
declaration.debug_crash("Unexpected initial or unset for non-inherited property");
% else:
context.builder.reset_${property.ident}();
% endif
},
% if property.style_struct.inherited:
CSSWideKeyword::Unset |
% endif
CSSWideKeyword::Inherit => {
% if property.style_struct.inherited:
declaration.debug_crash("Unexpected inherit or unset for inherited property");
% else:
context.rule_cache_conditions.borrow_mut().set_uncacheable();
context.builder.inherit_${property.ident}();
% endif
}
CSSWideKeyword::RevertLayer |
CSSWideKeyword::Revert => {
declaration.debug_crash("Found revert/revert-layer not deal with");
},
}
return;
},
#[cfg(debug_assertions)]
PropertyDeclaration::WithVariables(..) => {
declaration.debug_crash("Found variables not substituted");
return;
},
_ => unsafe {
declaration.unchecked_value_as::<${property.specified_type()}>()
},
};
% if property.ident in SYSTEM_FONT_LONGHANDS and engine == "gecko":
if let Some(sf) = specified_value.get_system() {
longhands::system_font::resolve_system_font(sf, context);
}
% endif
% if property.is_vector and not property.simple_vector_bindings and engine == "gecko":
// In the case of a vector property we want to pass down an
// iterator so that this can be computed without allocation.
//
// However, computing requires a context, but the style struct
// being mutated is on the context. We temporarily remove it,
// mutate it, and then put it back. Vector longhands cannot
// touch their own style struct whilst computing, else this will
// panic.
let mut s =
context.builder.take_${data.current_style_struct.name_lower}();
{
let iter = specified_value.compute_iter(context);
s.set_${property.ident}(iter);
}
context.builder.put_${data.current_style_struct.name_lower}(s);
% else:
% if property.boxed:
let computed = (**specified_value).to_computed_value(context);
% else:
let computed = specified_value.to_computed_value(context);
% endif
context.builder.set_${property.ident}(computed)
% endif
% endif
}
pub fn parse_declared<'i, 't>(
context: &ParserContext,
input: &mut Parser<'i, 't>,
) -> Result<PropertyDeclaration, ParseError<'i>> {
% if property.allow_quirks != "No":
parse_quirky(context, input, specified::AllowQuirks::${property.allow_quirks})
% else:
parse(context, input)
% endif
% if property.boxed:
.map(Box::new)
% endif
.map(PropertyDeclaration::${property.camel_case})
}
}
</%def>
<%def name="gecko_keyword_conversion(keyword, values=None, type='SpecifiedValue', cast_to=None)">
<%
if not values:
values = keyword.values_for(engine)
maybe_cast = "as %s" % cast_to if cast_to else ""
const_type = cast_to if cast_to else "u32"
%>
#[cfg(feature = "gecko")]
impl ${type} {
/// Obtain a specified value from a Gecko keyword value
///
/// Intended for use with presentation attributes, not style structs
pub fn from_gecko_keyword(kw: u32) -> Self {
use crate::gecko_bindings::structs;
% for value in values:
// We can't match on enum values if we're matching on a u32
const ${to_rust_ident(value).upper()}: ${const_type}
= structs::${keyword.gecko_constant(value)} as ${const_type};
% endfor
match kw ${maybe_cast} {
% for value in values:
${to_rust_ident(value).upper()} => ${type}::${to_camel_case(value)},
% endfor
_ => panic!("Found unexpected value in style struct for ${keyword.name} property"),
}
}
}
</%def>
<%def name="gecko_bitflags_conversion(bit_map, gecko_bit_prefix, type, kw_type='u8')">
#[cfg(feature = "gecko")]
impl ${type} {
/// Obtain a specified value from a Gecko keyword value
///
/// Intended for use with presentation attributes, not style structs
pub fn from_gecko_keyword(kw: ${kw_type}) -> Self {
% for gecko_bit in bit_map.values():
use crate::gecko_bindings::structs::${gecko_bit_prefix}${gecko_bit};
% endfor
let mut bits = ${type}::empty();
% for servo_bit, gecko_bit in bit_map.items():
if kw & (${gecko_bit_prefix}${gecko_bit} as ${kw_type}) != 0 {
bits |= ${servo_bit};
}
% endfor
bits
}
pub fn to_gecko_keyword(self) -> ${kw_type} {
% for gecko_bit in bit_map.values():
use crate::gecko_bindings::structs::${gecko_bit_prefix}${gecko_bit};
% endfor
let mut bits: ${kw_type} = 0;
// FIXME: if we ensure that the Servo bitflags storage is the same
// as Gecko's one, we can just copy it.
% for servo_bit, gecko_bit in bit_map.items():
if self.contains(${servo_bit}) {
bits |= ${gecko_bit_prefix}${gecko_bit} as ${kw_type};
}
% endfor
bits
}
}
</%def>
<%def name="single_keyword(name, values, vector=False,
needs_conversion=False, **kwargs)">
<%
keyword_kwargs = {a: kwargs.pop(a, None) for a in [
'gecko_constant_prefix',
'gecko_enum_prefix',
'extra_gecko_values',
'extra_servo_values',
'gecko_aliases',
'servo_aliases',
'custom_consts',
'gecko_inexhaustive',
'gecko_strip_moz_prefix',
]}
%>
<%def name="inner_body(keyword, needs_conversion=False)">
pub use self::computed_value::T as SpecifiedValue;
pub mod computed_value {
#[cfg_attr(feature = "servo", derive(Deserialize, Serialize))]
#[derive(Clone, Copy, Debug, Eq, FromPrimitive, MallocSizeOf, Parse, PartialEq, SpecifiedValueInfo, ToAnimatedValue, ToComputedValue, ToCss, ToResolvedValue, ToShmem)]
pub enum T {
% for variant in keyword.values_for(engine):
<%
aliases = []
for alias, v in keyword.aliases_for(engine).items():
if variant == v:
aliases.append(alias)
%>
% if aliases:
#[parse(aliases = "${','.join(sorted(aliases))}")]
% endif
${to_camel_case(variant)},
% endfor
}
}
#[inline]
pub fn get_initial_value() -> computed_value::T {
computed_value::T::${to_camel_case(values.split()[0])}
}
#[inline]
pub fn get_initial_specified_value() -> SpecifiedValue {
SpecifiedValue::${to_camel_case(values.split()[0])}
}
#[inline]
pub fn parse<'i, 't>(_context: &ParserContext, input: &mut Parser<'i, 't>)
-> Result<SpecifiedValue, ParseError<'i>> {
SpecifiedValue::parse(input)
}
% if needs_conversion:
<%
conversion_values = keyword.values_for(engine) + list(keyword.aliases_for(engine).keys())
%>
${gecko_keyword_conversion(keyword, values=conversion_values)}
% endif
</%def>
% if vector:
<%call expr="vector_longhand(name, keyword=Keyword(name, values, **keyword_kwargs), **kwargs)">
${inner_body(Keyword(name, values, **keyword_kwargs))}
% if caller:
${caller.body()}
% endif
</%call>
% else:
<%call expr="longhand(name, keyword=Keyword(name, values, **keyword_kwargs), **kwargs)">
${inner_body(Keyword(name, values, **keyword_kwargs),
needs_conversion=needs_conversion)}
% if caller:
${caller.body()}
% endif
</%call>
% endif
</%def>
<%def name="shorthand(name, sub_properties, derive_serialize=False,
derive_value_info=True, **kwargs)">
<%
shorthand = data.declare_shorthand(name, sub_properties.split(), **kwargs)
# mako doesn't accept non-string value in parameters with <% %> form, so
# we have to workaround it this way.
if not isinstance(derive_value_info, bool):
derive_value_info = eval(derive_value_info)
%>
% if shorthand:
/// ${shorthand.spec}
pub mod ${shorthand.ident} {
use cssparser::Parser;
use crate::parser::ParserContext;
use crate::properties::{PropertyDeclaration, SourcePropertyDeclaration, MaybeBoxed, longhands};
#[allow(unused_imports)]
use selectors::parser::SelectorParseErrorKind;
#[allow(unused_imports)]
use std::fmt::{self, Write};
#[allow(unused_imports)]
use style_traits::{ParseError, StyleParseErrorKind};
#[allow(unused_imports)]
use style_traits::{CssWriter, KeywordsCollectFn, SpecifiedValueInfo, ToCss};
% if derive_value_info:
#[derive(SpecifiedValueInfo)]
% endif
pub struct Longhands {
% for sub_property in shorthand.sub_properties:
pub ${sub_property.ident}:
% if sub_property.boxed:
Box<
% endif
longhands::${sub_property.ident}::SpecifiedValue
% if sub_property.boxed:
>
% endif
,
% endfor
}
/// Represents a serializable set of all of the longhand properties that
/// correspond to a shorthand.
% if derive_serialize:
#[derive(ToCss)]
% endif
pub struct LonghandsToSerialize<'a> {
% for sub_property in shorthand.sub_properties:
pub ${sub_property.ident}:
% if sub_property.may_be_disabled_in(shorthand, engine):
Option<
% endif
&'a longhands::${sub_property.ident}::SpecifiedValue,
% if sub_property.may_be_disabled_in(shorthand, engine):
>,
% endif
% endfor
}
impl<'a> LonghandsToSerialize<'a> {
/// Tries to get a serializable set of longhands given a set of
/// property declarations.
pub fn from_iter(iter: impl Iterator<Item = &'a PropertyDeclaration>) -> Result<Self, ()> {
// Define all of the expected variables that correspond to the shorthand
% for sub_property in shorthand.sub_properties:
let mut ${sub_property.ident} =
None::< &'a longhands::${sub_property.ident}::SpecifiedValue>;
% endfor
// Attempt to assign the incoming declarations to the expected variables
for declaration in iter {
match *declaration {
% for sub_property in shorthand.sub_properties:
PropertyDeclaration::${sub_property.camel_case}(ref value) => {
${sub_property.ident} = Some(value)
},
% endfor
_ => {}
};
}
// If any of the expected variables are missing, return an error
match (
% for sub_property in shorthand.sub_properties:
${sub_property.ident},
% endfor
) {
(
% for sub_property in shorthand.sub_properties:
% if sub_property.may_be_disabled_in(shorthand, engine):
${sub_property.ident},
% else:
Some(${sub_property.ident}),
% endif
% endfor
) =>
Ok(LonghandsToSerialize {
% for sub_property in shorthand.sub_properties:
${sub_property.ident},
% endfor
}),
_ => Err(())
}
}
}
/// Parse the given shorthand and fill the result into the
/// `declarations` vector.
pub fn parse_into<'i, 't>(
declarations: &mut SourcePropertyDeclaration,
context: &ParserContext,
input: &mut Parser<'i, 't>,
) -> Result<(), ParseError<'i>> {
#[allow(unused_imports)]
use crate::properties::{NonCustomPropertyId, LonghandId};
input.parse_entirely(|input| parse_value(context, input)).map(|longhands| {
% for sub_property in shorthand.sub_properties:
% if sub_property.may_be_disabled_in(shorthand, engine):
if NonCustomPropertyId::from(LonghandId::${sub_property.camel_case})
.allowed_in_ignoring_rule_type(context) {
% endif
declarations.push(PropertyDeclaration::${sub_property.camel_case}(
longhands.${sub_property.ident}
));
% if sub_property.may_be_disabled_in(shorthand, engine):
}
% endif
% endfor
})
}
/// Try to serialize a given shorthand to a string.
pub fn to_css(declarations: &[&PropertyDeclaration], dest: &mut crate::str::CssStringWriter) -> fmt::Result {
match LonghandsToSerialize::from_iter(declarations.iter().cloned()) {
Ok(longhands) => longhands.to_css(&mut CssWriter::new(dest)),
Err(_) => Ok(())
}
}
${caller.body()}
}
% endif
</%def>
// A shorthand of kind `<property-1> <property-2>?` where both properties have
// the same type.
<%def name="two_properties_shorthand(
name,
first_property,
second_property,
parser_function='crate::parser::Parse::parse',
**kwargs
)">
<%call expr="self.shorthand(name, sub_properties=' '.join([first_property, second_property]), **kwargs)">
#[allow(unused_imports)]
use crate::parser::Parse;
#[allow(unused_imports)]
use crate::values::specified;
fn parse_value<'i, 't>(
context: &ParserContext,
input: &mut Parser<'i, 't>,
) -> Result<Longhands, ParseError<'i>> {
let parse_one = |c: &ParserContext, input: &mut Parser<'i, 't>| -> Result<
crate::properties::longhands::${to_rust_ident(first_property)}::SpecifiedValue,
ParseError<'i>
> {
${parser_function}(c, input)
};
let first = parse_one(context, input)?;
let second =
input.try_parse(|input| parse_one(context, input)).unwrap_or_else(|_| first.clone());
Ok(expanded! {
${to_rust_ident(first_property)}: first,
${to_rust_ident(second_property)}: second,
})
}
impl<'a> ToCss for LonghandsToSerialize<'a> {
fn to_css<W>(&self, dest: &mut CssWriter<W>) -> fmt::Result where W: fmt::Write {
let first = &self.${to_rust_ident(first_property)};
let second = &self.${to_rust_ident(second_property)};
first.to_css(dest)?;
if first != second {
dest.write_char(' ')?;
second.to_css(dest)?;
}
Ok(())
}
}
</%call>
</%def>
<%def name="four_sides_shorthand(name, sub_property_pattern,
parser_function='crate::parser::Parse::parse',
allow_quirks='No', **kwargs)">
<% sub_properties=' '.join(sub_property_pattern % side for side in PHYSICAL_SIDES) %>
<%call expr="self.shorthand(name, sub_properties=sub_properties, **kwargs)">
#[allow(unused_imports)]
use crate::parser::Parse;
use crate::values::generics::rect::Rect;
#[allow(unused_imports)]
use crate::values::specified;
fn parse_value<'i, 't>(
context: &ParserContext,
input: &mut Parser<'i, 't>,
) -> Result<Longhands, ParseError<'i>> {
let rect = Rect::parse_with(context, input, |c, i| -> Result<
crate::properties::longhands::${to_rust_ident(sub_property_pattern % "top")}::SpecifiedValue,
ParseError<'i>
> {
% if allow_quirks != "No":
${parser_function}_quirky(c, i, specified::AllowQuirks::${allow_quirks})
% else:
${parser_function}(c, i)
% endif
})?;
Ok(expanded! {
% for index, side in enumerate(["top", "right", "bottom", "left"]):
${to_rust_ident(sub_property_pattern % side)}: rect.${index},
% endfor
})
}
impl<'a> ToCss for LonghandsToSerialize<'a> {
fn to_css<W>(&self, dest: &mut CssWriter<W>) -> fmt::Result
where
W: Write,
{
let rect = Rect::new(
% for side in ["top", "right", "bottom", "left"]:
&self.${to_rust_ident(sub_property_pattern % side)},
% endfor
);
rect.to_css(dest)
}
}
</%call>
</%def>