Files
ladybird/Libraries/LibWeb/CSS/CSSMathNegate.cpp
Shannon Booth fd44da6829 LibWeb/Bindings: Emit one bindings header and cpp per IDL
Previously, the LibWeb bindings generator would output multiple per
interface files like Prototype/Constructor/Namespace/GlobalMixin
depending on the contents of that IDL file.

This complicates the build system as it means that it does not know
what files will be generated without knowledge of the contents of that
IDL file.

Instead, for each IDL file only generate a single Bindings/<IDLFile>.h
and Bindings/<IDLFile>.cpp.
2026-04-21 07:36:13 +02:00

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/*
* Copyright (c) 2025, Sam Atkins <sam@ladybird.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "CSSMathNegate.h"
#include <LibWeb/Bindings/CSSMathNegate.h>
#include <LibWeb/Bindings/Intrinsics.h>
#include <LibWeb/CSS/StyleValues/CalculatedStyleValue.h>
#include <LibWeb/WebIDL/ExceptionOr.h>
namespace Web::CSS {
GC_DEFINE_ALLOCATOR(CSSMathNegate);
GC::Ref<CSSMathNegate> CSSMathNegate::create(JS::Realm& realm, NumericType type, GC::Ref<CSSNumericValue> values)
{
return realm.create<CSSMathNegate>(realm, move(type), move(values));
}
// https://drafts.css-houdini.org/css-typed-om-1/#dom-cssmathnegate-cssmathnegate
GC::Ref<CSSMathNegate> CSSMathNegate::construct_impl(JS::Realm& realm, CSSNumberish value)
{
// The CSSMathNegate(arg) constructor must, when called, perform the following steps:
// 1. Replace arg with the result of rectifying a numberish value for arg.
auto converted_value = rectify_a_numberish_value(realm, value);
// 2. Return a new CSSMathNegate whose value internal slot is set to arg.
return CSSMathNegate::create(realm, converted_value->type(), converted_value);
}
CSSMathNegate::CSSMathNegate(JS::Realm& realm, NumericType type, GC::Ref<CSSNumericValue> values)
: CSSMathValue(realm, Bindings::CSSMathOperator::Negate, move(type))
, m_value(move(values))
{
}
CSSMathNegate::~CSSMathNegate() = default;
void CSSMathNegate::initialize(JS::Realm& realm)
{
WEB_SET_PROTOTYPE_FOR_INTERFACE(CSSMathNegate);
Base::initialize(realm);
}
void CSSMathNegate::visit_edges(Visitor& visitor)
{
Base::visit_edges(visitor);
visitor.visit(m_value);
}
// https://drafts.css-houdini.org/css-typed-om-1/#serialize-a-cssmathvalue
void CSSMathNegate::serialize_math_value(StringBuilder& s, Nested nested, Parens parens) const
{
// NB: Only steps 1 and 4 apply here.
// 1. Let s initially be the empty string.
// 4. Otherwise, if this is a CSSMathNegate:
{
// 1. If paren-less is true, continue to the next step; otherwise, if nested is true, append "(" to s;
// otherwise, append "calc(" to s.
if (parens == Parens::With) {
if (nested == Nested::Yes) {
s.append('(');
} else {
s.append("calc("sv);
}
}
// 2. Append "-" to s.
s.append('-');
// 3. Serialize thiss value internal slot with nested set to true, and append the result to s.
m_value->serialize(s, { .nested = true });
// 4. If paren-less is false, append ")" to s,
if (parens == Parens::With)
s.append(')');
// 5. Return s.
}
}
// https://drafts.css-houdini.org/css-typed-om-1/#dom-cssmathnegate-value
GC::Ref<CSSNumericValue> CSSMathNegate::value() const
{
return m_value;
}
// https://drafts.css-houdini.org/css-typed-om-1/#equal-numeric-value
bool CSSMathNegate::is_equal_numeric_value(GC::Ref<CSSNumericValue> other) const
{
// NB: Only steps 1, 4 and 5 are relevant.
// 1. If value1 and value2 are not members of the same interface, return false.
auto* other_negate = as_if<CSSMathNegate>(*other);
if (!other_negate)
return false;
// 4. Assert: value1 and value2 are both CSSMathNegates or CSSMathInverts.
// 5. Return whether value1s value and value2s value are equal numeric values.
return m_value->is_equal_numeric_value(other_negate->m_value);
}
// https://drafts.css-houdini.org/css-typed-om-1/#create-a-sum-value
Optional<SumValue> CSSMathNegate::create_a_sum_value() const
{
// 1. Let values be the result of creating a sum value from thiss value internal slot.
auto values = m_value->create_a_sum_value();
// 2. If values is failure, return failure.
if (!values.has_value())
return {};
// 3. Negate the value of each item of values.
for (auto& value : *values)
value.value = -value.value;
// 4. Return values.
return values;
}
WebIDL::ExceptionOr<NonnullRefPtr<CalculationNode const>> CSSMathNegate::create_calculation_node(CalculationContext const& context) const
{
return NegateCalculationNode::create(TRY(m_value->create_calculation_node(context)));
}
}