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118 lines
4 KiB
C++
118 lines
4 KiB
C++
/*
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* Copyright (c) 2025, Sam Atkins <sam@ladybird.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include "CSSMathMax.h"
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#include <LibWeb/Bindings/CSSMathMaxPrototype.h>
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#include <LibWeb/Bindings/Intrinsics.h>
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#include <LibWeb/CSS/CSSMathNegate.h>
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#include <LibWeb/CSS/CSSNumericArray.h>
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#include <LibWeb/WebIDL/DOMException.h>
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#include <LibWeb/WebIDL/ExceptionOr.h>
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namespace Web::CSS {
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GC_DEFINE_ALLOCATOR(CSSMathMax);
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GC::Ref<CSSMathMax> CSSMathMax::create(JS::Realm& realm, NumericType type, GC::Ref<CSSNumericArray> values)
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{
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return realm.create<CSSMathMax>(realm, move(type), move(values));
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}
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// https://drafts.css-houdini.org/css-typed-om-1/#dom-cssmathmin-cssmathmin
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WebIDL::ExceptionOr<GC::Ref<CSSMathMax>> CSSMathMax::construct_impl(JS::Realm& realm, Vector<CSSNumberish> values)
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{
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// The CSSMathMin(...args) and CSSMathMax(...args) constructors are defined identically to the above, except that
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// in the last step they return a new CSSMathMin or CSSMathMax object, respectively.
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// NB: So, the steps below are a modification of the CSSMathSum steps.
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// 1. Replace each item of args with the result of rectifying a numberish value for the item.
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GC::RootVector<GC::Ref<CSSNumericValue>> converted_values { realm.heap() };
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converted_values.ensure_capacity(values.size());
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for (auto const& value : values) {
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converted_values.append(rectify_a_numberish_value(realm, value));
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}
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// 2. If args is empty, throw a SyntaxError.
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if (converted_values.is_empty())
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return WebIDL::SyntaxError::create(realm, "Cannot create an empty CSSMathMax"_utf16);
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// 3. Let type be the result of adding the types of all the items of args. If type is failure, throw a TypeError.
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auto type = converted_values.first()->type();
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bool first = true;
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for (auto const& value : converted_values) {
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if (first) {
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first = false;
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continue;
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}
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if (auto added_types = type.added_to(value->type()); added_types.has_value()) {
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type = added_types.release_value();
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} else {
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return WebIDL::SimpleException { WebIDL::SimpleExceptionType::TypeError, "Cannot create a CSSMathMax with values of incompatible types"sv };
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}
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}
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// 4. Return a new CSSMathMax whose values internal slot is set to args.
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auto values_array = CSSNumericArray::create(realm, { converted_values });
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return CSSMathMax::create(realm, move(type), move(values_array));
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}
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CSSMathMax::CSSMathMax(JS::Realm& realm, NumericType type, GC::Ref<CSSNumericArray> values)
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: CSSMathValue(realm, Bindings::CSSMathOperator::Max, move(type))
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, m_values(move(values))
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{
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}
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CSSMathMax::~CSSMathMax() = default;
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void CSSMathMax::initialize(JS::Realm& realm)
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{
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WEB_SET_PROTOTYPE_FOR_INTERFACE(CSSMathMax);
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Base::initialize(realm);
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}
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void CSSMathMax::visit_edges(Visitor& visitor)
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{
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Base::visit_edges(visitor);
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visitor.visit(m_values);
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}
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// https://drafts.css-houdini.org/css-typed-om-1/#serialize-a-cssmathvalue
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String CSSMathMax::serialize_math_value(Nested, Parens) const
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{
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// NB: Only steps 1 and 2 apply here.
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// 1. Let s initially be the empty string.
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StringBuilder s;
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// 2. If this is a CSSMathMin or CSSMathMax:
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{
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// 1. Append "min(" or "max(" to s, as appropriate.
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s.append("max("sv);
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// 2. For each arg in this’s values internal slot, serialize arg with nested and paren-less both true, and
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// append the result to s, appending a ", " between successive values.
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bool first = true;
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for (auto const& arg : m_values->values()) {
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if (first) {
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first = false;
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} else {
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s.append(", "sv);
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}
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s.append(arg->to_string({ .nested = true, .parenless = true }));
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}
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// 3. Append ")" to s and return s.
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s.append(")"sv);
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return s.to_string_without_validation();
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}
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}
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// https://drafts.css-houdini.org/css-typed-om-1/#dom-cssmathmin-values
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GC::Ref<CSSNumericArray> CSSMathMax::values() const
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{
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return m_values;
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}
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}
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