mirror of
https://github.com/LadybirdBrowser/ladybird
synced 2026-04-25 17:25:08 +02:00
61d79a1e47
Add an abstract image style value for image-set() and parse both the standard and -webkit-prefixed spellings through the existing <image> value path. The parser accepts URL and string image candidates, optional resolution descriptors, and type() filters. Track attr-taint through substituted component values so image-set() candidates using attr()-derived URL-producing tokens are rejected when resolved for URL-using properties. Update the relevant WPT baselines now that image-set() parsing is supported in additional value contexts.
134 lines
3.6 KiB
C++
134 lines
3.6 KiB
C++
/*
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* Copyright (c) 2020-2021, the SerenityOS developers.
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* Copyright (c) 2021-2025, 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 <LibWeb/CSS/Parser/ComponentValue.h>
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namespace Web::CSS::Parser {
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ComponentValue::ComponentValue(Token token)
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: m_value(move(token))
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{
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}
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ComponentValue::ComponentValue(Function&& function)
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: m_value(move(function))
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{
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}
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ComponentValue::ComponentValue(SimpleBlock&& block)
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: m_value(move(block))
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{
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}
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ComponentValue::ComponentValue(GuaranteedInvalidValue&& invalid)
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: m_value(move(invalid))
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{
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}
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ComponentValue::~ComponentValue() = default;
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bool ComponentValue::is_function(StringView name) const
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{
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return is_function() && function().name.equals_ignoring_ascii_case(name);
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}
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bool ComponentValue::is_delim(u32 delim) const
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{
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switch (delim) {
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// All of these have their own separate token types, and so passing them to is_delim() is incorrect and will never match.
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case ':':
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case ';':
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case ',':
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case '[':
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case ']':
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case '{':
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case '}':
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case '(':
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case ')':
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dbgln("Calling is_delim() with a punctuation mark ({}) that has its own token type!", static_cast<char>(delim));
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VERIFY_NOT_REACHED();
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default:
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return is(Token::Type::Delim) && token().delim() == delim;
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}
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}
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bool ComponentValue::is_ident(StringView ident) const
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{
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return is(Token::Type::Ident) && token().ident().equals_ignoring_ascii_case(ident);
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}
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String ComponentValue::to_string() const
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{
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return m_value.visit([](auto const& it) { return it.to_string(); });
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}
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String ComponentValue::to_debug_string() const
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{
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return m_value.visit(
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[](Token const& token) {
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return MUST(String::formatted("Token: {}", token.to_debug_string()));
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},
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[](SimpleBlock const& block) {
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return MUST(String::formatted("Block: {}", block.to_string()));
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},
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[](Function const& function) {
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return MUST(String::formatted("Function: {}", function.to_string()));
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},
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[](GuaranteedInvalidValue const&) {
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return "Guaranteed-invalid value"_string;
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});
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}
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String ComponentValue::original_source_text() const
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{
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return m_value.visit([](auto const& it) { return it.original_source_text(); });
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}
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bool ComponentValue::contains_guaranteed_invalid_value() const
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{
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return m_value.visit(
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[](Token const&) {
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return false;
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},
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[](SimpleBlock const& block) {
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return block.value
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.first_matching([](auto const& it) { return it.contains_guaranteed_invalid_value(); })
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.has_value();
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},
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[](Function const& function) {
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return function.value
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.first_matching([](auto const& it) { return it.contains_guaranteed_invalid_value(); })
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.has_value();
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},
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[](GuaranteedInvalidValue const&) {
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return true;
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});
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}
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bool ComponentValue::contains_attr_tainted_value() const
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{
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if (m_attr_tainted)
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return true;
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return m_value.visit(
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[](Token const&) {
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return false;
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},
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[](SimpleBlock const& block) {
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return block.value
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.first_matching([](auto const& it) { return it.contains_attr_tainted_value(); })
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.has_value();
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},
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[](Function const& function) {
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return function.value
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.first_matching([](auto const& it) { return it.contains_attr_tainted_value(); })
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.has_value();
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},
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[](GuaranteedInvalidValue const&) {
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return false;
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});
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}
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}
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