bfd354492e
With this change, we now have ~1200 CellAllocators across both LibJS and LibWeb in a normal WebContent instance. This gives us a minimum heap size of 4.7 MiB in the scenario where we only have one cell allocated per type. Of course, in practice there will be many more of each type, so the effective overhead is quite a bit smaller than that in practice. I left a few types unconverted to this mechanism because I got tired of doing this. :^)
111 lines
4.1 KiB
C++
111 lines
4.1 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibWeb/Bindings/CSSStyleRulePrototype.h>
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#include <LibWeb/Bindings/Intrinsics.h>
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#include <LibWeb/CSS/CSSStyleRule.h>
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#include <LibWeb/CSS/Parser/Parser.h>
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#include <LibWeb/WebIDL/ExceptionOr.h>
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namespace Web::CSS {
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JS_DEFINE_ALLOCATOR(CSSStyleRule);
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JS::NonnullGCPtr<CSSStyleRule> CSSStyleRule::create(JS::Realm& realm, Vector<NonnullRefPtr<Web::CSS::Selector>>&& selectors, CSSStyleDeclaration& declaration)
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{
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return realm.heap().allocate<CSSStyleRule>(realm, realm, move(selectors), declaration);
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}
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CSSStyleRule::CSSStyleRule(JS::Realm& realm, Vector<NonnullRefPtr<Selector>>&& selectors, CSSStyleDeclaration& declaration)
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: CSSRule(realm)
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, m_selectors(move(selectors))
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, m_declaration(declaration)
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{
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}
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void CSSStyleRule::initialize(JS::Realm& realm)
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{
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Base::initialize(realm);
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set_prototype(&Bindings::ensure_web_prototype<Bindings::CSSStyleRulePrototype>(realm, "CSSStyleRule"));
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}
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void CSSStyleRule::visit_edges(Cell::Visitor& visitor)
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{
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Base::visit_edges(visitor);
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visitor.visit(m_declaration);
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}
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// https://www.w3.org/TR/cssom/#dom-cssstylerule-style
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CSSStyleDeclaration* CSSStyleRule::style()
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{
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return m_declaration;
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}
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// https://www.w3.org/TR/cssom/#serialize-a-css-rule
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DeprecatedString CSSStyleRule::serialized() const
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{
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StringBuilder builder;
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// 1. Let s initially be the result of performing serialize a group of selectors on the rule’s associated selectors,
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// followed by the string " {", i.e., a single SPACE (U+0020), followed by LEFT CURLY BRACKET (U+007B).
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builder.append(serialize_a_group_of_selectors(selectors()));
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builder.append(" {"sv);
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// 2. Let decls be the result of performing serialize a CSS declaration block on the rule’s associated declarations, or null if there are no such declarations.
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auto decls = declaration().length() > 0 ? declaration().serialized() : Optional<DeprecatedString>();
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// FIXME: 3. Let rules be the result of performing serialize a CSS rule on each rule in the rule’s cssRules list, or null if there are no such rules.
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Optional<DeprecatedString> rules;
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// 4. If decls and rules are both null, append " }" to s (i.e. a single SPACE (U+0020) followed by RIGHT CURLY BRACKET (U+007D)) and return s.
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if (!decls.has_value() && !rules.has_value()) {
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builder.append(" }"sv);
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return builder.to_deprecated_string();
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}
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// 5. If rules is null:
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if (!rules.has_value()) {
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// 1. Append a single SPACE (U+0020) to s
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builder.append(' ');
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// 2. Append decls to s
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builder.append(*decls);
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// 3. Append " }" to s (i.e. a single SPACE (U+0020) followed by RIGHT CURLY BRACKET (U+007D)).
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builder.append(" }"sv);
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// 4. Return s.
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return builder.to_deprecated_string();
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}
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// FIXME: 6. Otherwise:
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// FIXME: 1. If decls is not null, prepend it to rules.
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// FIXME: 2. For each rule in rules:
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// FIXME: 1. Append a newline followed by two spaces to s.
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// FIXME: 2. Append rule to s.
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// FIXME: 3. Append a newline followed by RIGHT CURLY BRACKET (U+007D) to s.
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// FIXME: 4. Return s.
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TODO();
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}
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// https://www.w3.org/TR/cssom/#dom-cssstylerule-selectortext
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DeprecatedString CSSStyleRule::selector_text() const
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{
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// The selectorText attribute, on getting, must return the result of serializing the associated group of selectors.
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return serialize_a_group_of_selectors(selectors()).to_deprecated_string();
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}
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// https://www.w3.org/TR/cssom/#dom-cssstylerule-selectortext
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void CSSStyleRule::set_selector_text(StringView selector_text)
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{
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// 1. Run the parse a group of selectors algorithm on the given value.
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auto parsed_selectors = parse_selector(Parser::ParsingContext { realm() }, selector_text);
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// 2. If the algorithm returns a non-null value replace the associated group of selectors with the returned value.
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if (parsed_selectors.has_value())
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m_selectors = parsed_selectors.release_value();
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// 3. Otherwise, if the algorithm returns a null value, do nothing.
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}
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}
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