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LibWeb: Simplify CalculatedStyleValue types to match CSS-VALUES-4 :^)

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Level 4 drops the limitations of what types can be a denominator, which
means `<calc-number-sum>`, `<calc-number-product>` and
`<calc-number-value>` all go away.
This commit is contained in:
Sam Atkins 2023-03-31 15:10:34 +01:00 committed by Andreas Kling
parent bab968867d
commit 1352f8820b
Notes: sideshowbarker 2024-07-17 07:16:27 +09:00 
Author: https://github.com/AtkinsSJ
Commit: https://github.com/SerenityOS/serenity/commit/1352f8820b
Pull-request: https://github.com/SerenityOS/serenity/pull/18289
4 changed files with 29 additions and 368 deletions
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161
Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
View File

@ -7134,11 +7134,6 @@ Optional<CalculatedStyleValue::CalcValue> Parser::parse_calc_value(TokenStream<C
OwnPtr<CalculatedStyleValue::CalcProductPartWithOperator> Parser::parse_calc_product_part_with_operator(TokenStream<ComponentValue>& tokens)
{
// Note: The default value is not used or passed around.
auto product_with_operator = make<CalculatedStyleValue::CalcProductPartWithOperator>(
CalculatedStyleValue::ProductOperation::Multiply,
CalculatedStyleValue::CalcNumberValue { Number {} });
tokens.skip_whitespace();
auto const& op_token = tokens.peek_token();
@ -7146,160 +7141,33 @@ OwnPtr<CalculatedStyleValue::CalcProductPartWithOperator> Parser::parse_calc_pro
return nullptr;
auto op = op_token.token().delim();
if (op == '*') {
tokens.next_token();
tokens.skip_whitespace();
product_with_operator->op = CalculatedStyleValue::ProductOperation::Multiply;
auto parsed_calc_value = parse_calc_value(tokens);
if (!parsed_calc_value.has_value())
return nullptr;
product_with_operator->value = { parsed_calc_value.release_value() };
} else if (op == '/') {
// FIXME: Detect divide-by-zero if possible
tokens.next_token();
tokens.skip_whitespace();
product_with_operator->op = CalculatedStyleValue::ProductOperation::Divide;
auto parsed_calc_number_value = parse_calc_number_value(tokens);
if (!parsed_calc_number_value.has_value())
return nullptr;
product_with_operator->value = { parsed_calc_number_value.release_value() };
} else {
if (op != '*' && op != '/')
return nullptr;
}
return product_with_operator;
}
OwnPtr<CalculatedStyleValue::CalcNumberProductPartWithOperator> Parser::parse_calc_number_product_part_with_operator(TokenStream<ComponentValue>& tokens)
{
// Note: The default value is not used or passed around.
auto number_product_with_operator = make<CalculatedStyleValue::CalcNumberProductPartWithOperator>(
CalculatedStyleValue::ProductOperation::Multiply,
CalculatedStyleValue::CalcNumberValue { Number {} });
tokens.next_token();
tokens.skip_whitespace();
auto const& op_token = tokens.peek_token();
if (!op_token.is(Token::Type::Delim))
return nullptr;
auto op = op_token.token().delim();
if (op == '*') {
tokens.next_token();
tokens.skip_whitespace();
number_product_with_operator->op = CalculatedStyleValue::ProductOperation::Multiply;
} else if (op == '/') {
// FIXME: Detect divide-by-zero if possible
tokens.next_token();
tokens.skip_whitespace();
number_product_with_operator->op = CalculatedStyleValue::ProductOperation::Divide;
} else {
return nullptr;
}
auto parsed_calc_value = parse_calc_number_value(tokens);
auto parsed_calc_value = parse_calc_value(tokens);
if (!parsed_calc_value.has_value())
return nullptr;
number_product_with_operator->value = parsed_calc_value.release_value();
return number_product_with_operator;
}
OwnPtr<CalculatedStyleValue::CalcNumberProduct> Parser::parse_calc_number_product(TokenStream<ComponentValue>& tokens)
{
auto calc_number_product = make<CalculatedStyleValue::CalcNumberProduct>(
CalculatedStyleValue::CalcNumberValue { Number {} },
Vector<NonnullOwnPtr<CalculatedStyleValue::CalcNumberProductPartWithOperator>> {});
auto first_calc_number_value_or_error = parse_calc_number_value(tokens);
if (!first_calc_number_value_or_error.has_value())
return nullptr;
calc_number_product->first_calc_number_value = first_calc_number_value_or_error.release_value();
while (tokens.has_next_token()) {
auto number_product_with_operator = parse_calc_number_product_part_with_operator(tokens);
if (!number_product_with_operator)
break;
calc_number_product->zero_or_more_additional_calc_number_values.append(number_product_with_operator.release_nonnull());
}
return calc_number_product;
}
OwnPtr<CalculatedStyleValue::CalcNumberSumPartWithOperator> Parser::parse_calc_number_sum_part_with_operator(TokenStream<ComponentValue>& tokens)
{
if (!(tokens.peek_token().is(Token::Type::Delim)
&& (tokens.peek_token().token().delim() == '+' || tokens.peek_token().token().delim() == '-')
&& tokens.peek_token(1).is(Token::Type::Whitespace)))
return nullptr;
auto const& token = tokens.next_token();
tokens.skip_whitespace();
CalculatedStyleValue::SumOperation op;
auto delim = token.token().delim();
if (delim == '+')
op = CalculatedStyleValue::SumOperation::Add;
else if (delim == '-')
op = CalculatedStyleValue::SumOperation::Subtract;
else
return nullptr;
auto calc_number_product = parse_calc_number_product(tokens);
if (!calc_number_product)
return nullptr;
return make<CalculatedStyleValue::CalcNumberSumPartWithOperator>(op, calc_number_product.release_nonnull());
}
OwnPtr<CalculatedStyleValue::CalcNumberSum> Parser::parse_calc_number_sum(TokenStream<ComponentValue>& tokens)
{
auto first_calc_number_product_or_error = parse_calc_number_product(tokens);
if (!first_calc_number_product_or_error)
return nullptr;
Vector<NonnullOwnPtr<CalculatedStyleValue::CalcNumberSumPartWithOperator>> additional {};
while (tokens.has_next_token()) {
auto calc_sum_part = parse_calc_number_sum_part_with_operator(tokens);
if (!calc_sum_part)
return nullptr;
additional.append(calc_sum_part.release_nonnull());
}
tokens.skip_whitespace();
auto calc_number_sum = make<CalculatedStyleValue::CalcNumberSum>(first_calc_number_product_or_error.release_nonnull(), move(additional));
return calc_number_sum;
}
Optional<CalculatedStyleValue::CalcNumberValue> Parser::parse_calc_number_value(TokenStream<ComponentValue>& tokens)
{
auto const& first = tokens.peek_token();
if (first.is_block() && first.block().is_paren()) {
tokens.next_token();
auto block_values = TokenStream(first.block().values());
auto calc_number_sum = parse_calc_number_sum(block_values);
if (calc_number_sum)
return CalculatedStyleValue::CalcNumberValue { calc_number_sum.release_nonnull() };
}
if (!first.is(Token::Type::Number))
return {};
tokens.next_token();
return CalculatedStyleValue::CalcNumberValue { first.token().number() };
auto operation = op == '*'
? CalculatedStyleValue::ProductOperation::Multiply
: CalculatedStyleValue::ProductOperation::Divide;
return make<CalculatedStyleValue::CalcProductPartWithOperator>(operation, parsed_calc_value.release_value());
}
// https://www.w3.org/TR/css-values-4/#typedef-calc-product
OwnPtr<CalculatedStyleValue::CalcProduct> Parser::parse_calc_product(TokenStream<ComponentValue>& tokens)
{
auto calc_product = make<CalculatedStyleValue::CalcProduct>(
CalculatedStyleValue::CalcValue { Number {} },
Vector<NonnullOwnPtr<CalculatedStyleValue::CalcProductPartWithOperator>> {});
// `<calc-product> = <calc-value> [ [ '*' | '/' ] <calc-value> ]*`
auto first_calc_value_or_error = parse_calc_value(tokens);
if (!first_calc_value_or_error.has_value())
return nullptr;
calc_product->first_calc_value = first_calc_value_or_error.release_value();
auto calc_product = make<CalculatedStyleValue::CalcProduct>(
first_calc_value_or_error.release_value(),
Vector<NonnullOwnPtr<CalculatedStyleValue::CalcProductPartWithOperator>> {});
while (tokens.has_next_token()) {
auto product_with_operator = parse_calc_product_part_with_operator(tokens);
@ -7338,8 +7206,11 @@ OwnPtr<CalculatedStyleValue::CalcSumPartWithOperator> Parser::parse_calc_sum_par
return make<CalculatedStyleValue::CalcSumPartWithOperator>(op, calc_product.release_nonnull());
};
// https://www.w3.org/TR/css-values-4/#typedef-calc-sum
OwnPtr<CalculatedStyleValue::CalcSum> Parser::parse_calc_sum(TokenStream<ComponentValue>& tokens)
{
// `<calc-sum> = <calc-product> [ [ '+' | '-' ] <calc-product> ]*`
auto parsed_calc_product = parse_calc_product(tokens);
if (!parsed_calc_product)
return nullptr;

5
Userland/Libraries/LibWeb/CSS/Parser/Parser.h
View File

@ -327,13 +327,8 @@ private:
OwnPtr<CalculatedStyleValue::CalcSum> parse_calc_sum(TokenStream<ComponentValue>&);
OwnPtr<CalculatedStyleValue::CalcProduct> parse_calc_product(TokenStream<ComponentValue>&);
Optional<CalculatedStyleValue::CalcValue> parse_calc_value(TokenStream<ComponentValue>&);
OwnPtr<CalculatedStyleValue::CalcNumberSum> parse_calc_number_sum(TokenStream<ComponentValue>&);
OwnPtr<CalculatedStyleValue::CalcNumberProduct> parse_calc_number_product(TokenStream<ComponentValue>&);
Optional<CalculatedStyleValue::CalcNumberValue> parse_calc_number_value(TokenStream<ComponentValue>&);
OwnPtr<CalculatedStyleValue::CalcProductPartWithOperator> parse_calc_product_part_with_operator(TokenStream<ComponentValue>&);
OwnPtr<CalculatedStyleValue::CalcSumPartWithOperator> parse_calc_sum_part_with_operator(TokenStream<ComponentValue>&);
OwnPtr<CalculatedStyleValue::CalcNumberProductPartWithOperator> parse_calc_number_product_part_with_operator(TokenStream<ComponentValue>& tokens);
OwnPtr<CalculatedStyleValue::CalcNumberSumPartWithOperator> parse_calc_number_sum_part_with_operator(TokenStream<ComponentValue>&);
OwnPtr<CalculatedStyleValue::CalcSum> parse_calc_expression(Vector<ComponentValue> const&);
ParseErrorOr<NonnullRefPtr<Selector>> parse_complex_selector(TokenStream<ComponentValue>&, SelectorType);

174
Userland/Libraries/LibWeb/CSS/StyleValues/CalculatedStyleValue.cpp
View File

@ -214,13 +214,6 @@ bool CalculatedStyleValue::equals(StyleValue const& other) const
return to_string().release_value_but_fixme_should_propagate_errors() == other.to_string().release_value_but_fixme_should_propagate_errors();
}
ErrorOr<String> CalculatedStyleValue::CalcNumberValue::to_string() const
{
return value.visit(
[](Number const& number) -> ErrorOr<String> { return String::number(number.value()); },
[](NonnullOwnPtr<CalcNumberSum> const& sum) -> ErrorOr<String> { return String::formatted("({})", TRY(sum->to_string())); });
}
ErrorOr<String> CalculatedStyleValue::CalcValue::to_string() const
{
return value.visit(
@ -238,15 +231,6 @@ ErrorOr<String> CalculatedStyleValue::CalcSum::to_string() const
return builder.to_string();
}
ErrorOr<String> CalculatedStyleValue::CalcNumberSum::to_string() const
{
StringBuilder builder;
TRY(builder.try_append(TRY(first_calc_number_product->to_string())));
for (auto const& item : zero_or_more_additional_calc_number_products)
TRY(builder.try_append(TRY(item->to_string())));
return builder.to_string();
}
ErrorOr<String> CalculatedStyleValue::CalcProduct::to_string() const
{
StringBuilder builder;
@ -262,32 +246,10 @@ ErrorOr<String> CalculatedStyleValue::CalcSumPartWithOperator::to_string() const
}
ErrorOr<String> CalculatedStyleValue::CalcProductPartWithOperator::to_string() const
{
auto value_string = TRY(value.visit(
[](CalcValue const& v) { return v.to_string(); },
[](CalcNumberValue const& v) { return v.to_string(); }));
return String::formatted(" {} {}", op == ProductOperation::Multiply ? "*"sv : "/"sv, value_string);
}
ErrorOr<String> CalculatedStyleValue::CalcNumberProduct::to_string() const
{
StringBuilder builder;
TRY(builder.try_append(TRY(first_calc_number_value.to_string())));
for (auto const& item : zero_or_more_additional_calc_number_values)
TRY(builder.try_append(TRY(item->to_string())));
return builder.to_string();
}
ErrorOr<String> CalculatedStyleValue::CalcNumberProductPartWithOperator::to_string() const
{
return String::formatted(" {} {}", op == ProductOperation::Multiply ? "*"sv : "/"sv, TRY(value.to_string()));
}
ErrorOr<String> CalculatedStyleValue::CalcNumberSumPartWithOperator::to_string() const
{
return String::formatted(" {} {}", op == SumOperation::Add ? "+"sv : "-"sv, TRY(value->to_string()));
}
Optional<Angle> CalculatedStyleValue::resolve_angle() const
{
auto result = m_expression->resolve(nullptr, {});
@ -466,15 +428,6 @@ Optional<CalculatedStyleValue::ResolvedType> CalculatedStyleValue::CalcSum::reso
return resolve_sum_type(type, zero_or_more_additional_calc_products);
}
Optional<CalculatedStyleValue::ResolvedType> CalculatedStyleValue::CalcNumberSum::resolved_type() const
{
auto maybe_type = first_calc_number_product->resolved_type();
if (!maybe_type.has_value())
return {};
auto type = maybe_type.value();
return resolve_sum_type(type, zero_or_more_additional_calc_number_products);
}
template<typename ProductWithOperator>
static Optional<CalculatedStyleValue::ResolvedType> resolve_product_type(CalculatedStyleValue::ResolvedType first_type, Vector<NonnullOwnPtr<ProductWithOperator>> const& zero_or_more_additional_values)
{
@ -532,34 +485,9 @@ Optional<CalculatedStyleValue::ResolvedType> CalculatedStyleValue::CalcSumPartWi
return value->resolved_type();
}
Optional<CalculatedStyleValue::ResolvedType> CalculatedStyleValue::CalcNumberProduct::resolved_type() const
{
auto maybe_type = first_calc_number_value.resolved_type();
if (!maybe_type.has_value())
return {};
auto type = maybe_type.value();
return resolve_product_type(type, zero_or_more_additional_calc_number_values);
}
Optional<CalculatedStyleValue::ResolvedType> CalculatedStyleValue::CalcNumberProductPartWithOperator::resolved_type() const
{
return value.resolved_type();
}
Optional<CalculatedStyleValue::ResolvedType> CalculatedStyleValue::CalcNumberSumPartWithOperator::resolved_type() const
{
return value->resolved_type();
}
Optional<CalculatedStyleValue::ResolvedType> CalculatedStyleValue::CalcProductPartWithOperator::resolved_type() const
{
return value.visit(
[](CalcValue const& calc_value) {
return calc_value.resolved_type();
},
[](CalcNumberValue const& calc_number_value) {
return calc_number_value.resolved_type();
});
return value.resolved_type();
}
Optional<CalculatedStyleValue::ResolvedType> CalculatedStyleValue::CalcValue::resolved_type() const
@ -576,26 +504,6 @@ Optional<CalculatedStyleValue::ResolvedType> CalculatedStyleValue::CalcValue::re
[](NonnullOwnPtr<CalcSum> const& sum) { return sum->resolved_type(); });
}
Optional<CalculatedStyleValue::ResolvedType> CalculatedStyleValue::CalcNumberValue::resolved_type() const
{
return value.visit(
[](Number const& number) -> Optional<CalculatedStyleValue::ResolvedType> {
return { number.is_integer() ? ResolvedType::Integer : ResolvedType::Number };
},
[](NonnullOwnPtr<CalcNumberSum> const& sum) { return sum->resolved_type(); });
}
CalculatedStyleValue::CalculationResult CalculatedStyleValue::CalcNumberValue::resolve(Layout::Node const* layout_node, PercentageBasis const& percentage_basis) const
{
return value.visit(
[&](Number const& number) -> CalculatedStyleValue::CalculationResult {
return CalculatedStyleValue::CalculationResult { number };
},
[&](NonnullOwnPtr<CalcNumberSum> const& sum) -> CalculatedStyleValue::CalculationResult {
return sum->resolve(layout_node, percentage_basis);
});
}
CalculatedStyleValue::CalculationResult CalculatedStyleValue::CalcValue::resolve(Layout::Node const* layout_node, PercentageBasis const& percentage_basis) const
{
return value.visit(
@ -625,87 +533,31 @@ CalculatedStyleValue::CalculationResult CalculatedStyleValue::CalcSum::resolve(L
return value;
}
CalculatedStyleValue::CalculationResult CalculatedStyleValue::CalcNumberSum::resolve(Layout::Node const* layout_node, PercentageBasis const& percentage_basis) const
{
auto value = first_calc_number_product->resolve(layout_node, percentage_basis);
for (auto& additional_product : zero_or_more_additional_calc_number_products) {
auto additional_value = additional_product->resolve(layout_node, percentage_basis);
if (additional_product->op == CSS::CalculatedStyleValue::SumOperation::Add)
value.add(additional_value, layout_node, percentage_basis);
else if (additional_product->op == CalculatedStyleValue::SumOperation::Subtract)
value.subtract(additional_value, layout_node, percentage_basis);
else
VERIFY_NOT_REACHED();
}
return value;
}
CalculatedStyleValue::CalculationResult CalculatedStyleValue::CalcProduct::resolve(Layout::Node const* layout_node, PercentageBasis const& percentage_basis) const
{
auto value = first_calc_value.resolve(layout_node, percentage_basis);
for (auto& additional_value : zero_or_more_additional_calc_values) {
additional_value->value.visit(
[&](CalculatedStyleValue::CalcValue const& calc_value) {
VERIFY(additional_value->op == CalculatedStyleValue::ProductOperation::Multiply);
auto resolved_value = calc_value.resolve(layout_node, percentage_basis);
value.multiply_by(resolved_value, layout_node);
},
[&](CalculatedStyleValue::CalcNumberValue const& calc_number_value) {
VERIFY(additional_value->op == CalculatedStyleValue::ProductOperation::Divide);
auto resolved_calc_number_value = calc_number_value.resolve(layout_node, percentage_basis);
// FIXME: Checking for division by 0 should happen during parsing.
VERIFY(resolved_calc_number_value.value().get<Number>().value() != 0.0f);
value.divide_by(resolved_calc_number_value, layout_node);
});
}
return value;
}
CalculatedStyleValue::CalculationResult CalculatedStyleValue::CalcNumberProduct::resolve(Layout::Node const* layout_node, PercentageBasis const& percentage_basis) const
{
auto value = first_calc_number_value.resolve(layout_node, percentage_basis);
for (auto& additional_number_value : zero_or_more_additional_calc_number_values) {
auto additional_value = additional_number_value->resolve(layout_node, percentage_basis);
if (additional_number_value->op == CalculatedStyleValue::ProductOperation::Multiply)
value.multiply_by(additional_value, layout_node);
else if (additional_number_value->op == CalculatedStyleValue::ProductOperation::Divide)
value.divide_by(additional_value, layout_node);
else
VERIFY_NOT_REACHED();
if (additional_value->op == ProductOperation::Multiply) {
auto resolved_value = additional_value->value.resolve(layout_node, percentage_basis);
value.multiply_by(resolved_value, layout_node);
} else {
auto resolved_calc_number_value = additional_value->value.resolve(layout_node, percentage_basis);
// FIXME: Return the relevant constant here. (infinity?)
VERIFY(resolved_calc_number_value.value().get<Number>().value() != 0.0f);
value.divide_by(resolved_calc_number_value, layout_node);
}
}
return value;
}
CalculatedStyleValue::CalculationResult CalculatedStyleValue::CalcProductPartWithOperator::resolve(Layout::Node const* layout_node, PercentageBasis const& percentage_basis) const
{
return value.visit(
[&](CalcValue const& calc_value) {
return calc_value.resolve(layout_node, percentage_basis);
},
[&](CalcNumberValue const& calc_number_value) {
return calc_number_value.resolve(layout_node, percentage_basis);
});
}
CalculatedStyleValue::CalculationResult CalculatedStyleValue::CalcSumPartWithOperator::resolve(Layout::Node const* layout_node, PercentageBasis const& percentage_basis) const
{
return value->resolve(layout_node, percentage_basis);
}
CalculatedStyleValue::CalculationResult CalculatedStyleValue::CalcNumberProductPartWithOperator::resolve(Layout::Node const* layout_node, PercentageBasis const& percentage_basis) const
{
return value.resolve(layout_node, percentage_basis);
}
CalculatedStyleValue::CalculationResult CalculatedStyleValue::CalcNumberSumPartWithOperator::resolve(Layout::Node const* layout_node, PercentageBasis const& percentage_basis) const
CalculatedStyleValue::CalculationResult CalculatedStyleValue::CalcSumPartWithOperator::resolve(Layout::Node const* layout_node, PercentageBasis const& percentage_basis) const
{
return value->resolve(layout_node, percentage_basis);
}
@ -744,9 +596,7 @@ bool CalculatedStyleValue::CalcProduct::contains_percentage() const
bool CalculatedStyleValue::CalcProductPartWithOperator::contains_percentage() const
{
return value.visit(
[](CalcValue const& value) { return value.contains_percentage(); },
[](CalcNumberValue const&) { return false; });
return value.contains_percentage();
}
bool CalculatedStyleValue::CalcValue::contains_percentage() const

57
Userland/Libraries/LibWeb/CSS/StyleValues/CalculatedStyleValue.h
View File

@ -64,17 +64,6 @@ public:
struct CalcSumPartWithOperator;
struct CalcProduct;
struct CalcProductPartWithOperator;
struct CalcNumberSum;
struct CalcNumberSumPartWithOperator;
struct CalcNumberProduct;
struct CalcNumberProductPartWithOperator;
struct CalcNumberValue {
Variant<Number, NonnullOwnPtr<CalcNumberSum>> value;
ErrorOr<String> to_string() const;
Optional<ResolvedType> resolved_type() const;
CalculationResult resolve(Layout::Node const*, PercentageBasis const& percentage_basis) const;
};
struct CalcValue {
Variant<Number, Angle, Frequency, Length, Percentage, Time, NonnullOwnPtr<CalcSum>> value;
@ -100,19 +89,6 @@ public:
bool contains_percentage() const;
};
struct CalcNumberSum {
CalcNumberSum(NonnullOwnPtr<CalcNumberProduct> first_calc_number_product, Vector<NonnullOwnPtr<CalcNumberSumPartWithOperator>> additional)
: first_calc_number_product(move(first_calc_number_product))
, zero_or_more_additional_calc_number_products(move(additional)) {};
NonnullOwnPtr<CalcNumberProduct> first_calc_number_product;
Vector<NonnullOwnPtr<CalcNumberSumPartWithOperator>> zero_or_more_additional_calc_number_products;
ErrorOr<String> to_string() const;
Optional<ResolvedType> resolved_type() const;
CalculationResult resolve(Layout::Node const*, PercentageBasis const& percentage_basis) const;
};
struct CalcProduct {
CalcValue first_calc_value;
Vector<NonnullOwnPtr<CalcProductPartWithOperator>> zero_or_more_additional_calc_values;
@ -139,7 +115,7 @@ public:
struct CalcProductPartWithOperator {
ProductOperation op;
Variant<CalcValue, CalcNumberValue> value;
CalcValue value;
ErrorOr<String> to_string() const;
Optional<ResolvedType> resolved_type() const;
@ -148,37 +124,6 @@ public:
bool contains_percentage() const;
};
struct CalcNumberProduct {
CalcNumberValue first_calc_number_value;
Vector<NonnullOwnPtr<CalcNumberProductPartWithOperator>> zero_or_more_additional_calc_number_values;
ErrorOr<String> to_string() const;
Optional<ResolvedType> resolved_type() const;
CalculationResult resolve(Layout::Node const*, PercentageBasis const& percentage_basis) const;
};
struct CalcNumberProductPartWithOperator {
ProductOperation op;
CalcNumberValue value;
ErrorOr<String> to_string() const;
Optional<ResolvedType> resolved_type() const;
CalculationResult resolve(Layout::Node const*, PercentageBasis const& percentage_basis) const;
};
struct CalcNumberSumPartWithOperator {
CalcNumberSumPartWithOperator(SumOperation op, NonnullOwnPtr<CalcNumberProduct> calc_number_product)
: op(op)
, value(move(calc_number_product)) {};
SumOperation op;
NonnullOwnPtr<CalcNumberProduct> value;
ErrorOr<String> to_string() const;
Optional<ResolvedType> resolved_type() const;
CalculationResult resolve(Layout::Node const*, PercentageBasis const& percentage_basis) const;
};
static ValueComparingNonnullRefPtr<CalculatedStyleValue> create(NonnullOwnPtr<CalcSum> calc_sum, ResolvedType resolved_type)
{
return adopt_ref(*new CalculatedStyleValue(move(calc_sum), resolved_type));