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LibWeb: Implement disallowing inset when parsing shadows

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`text-shadow` does not support this, so this way we can still use the
same parsing code.

It's OK that we still assign a ShadowPlacement value to the
ShadowStyleValue, since it will just get ignored when painting
text-shadows, but if it appears in the property value then that is a
syntax error.
This commit is contained in:
Sam Atkins 2022-03-23 16:59:44 +00:00 • committed by Andreas Kling
parent 1094654adc
commit f078bb8294
2 changed files with 13 additions and 8 deletions
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13
Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
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@ -3318,7 +3318,7 @@ RefPtr<StyleValue> Parser::parse_border_radius_shorthand_value(Vector<StyleCompo
return StyleValueList::create(move(border_radii), StyleValueList::Separator::Space);
}
RefPtr<StyleValue> Parser::parse_shadow_value(Vector<StyleComponentValueRule> const& component_values)
RefPtr<StyleValue> Parser::parse_shadow_value(Vector<StyleComponentValueRule> const& component_values, AllowInsetKeyword allow_inset_keyword)
{
// "none"
if (component_values.size() == 1 && component_values.first().is(Token::Type::Ident)) {
@ -3327,12 +3327,12 @@ RefPtr<StyleValue> Parser::parse_shadow_value(Vector<StyleComponentValueRule> co
return ident;
}
return parse_comma_separated_value_list(component_values, [this](auto& tokens) {
return parse_single_shadow_value(tokens);
return parse_comma_separated_value_list(component_values, [this, allow_inset_keyword](auto& tokens) {
return parse_single_shadow_value(tokens, allow_inset_keyword);
});
}
RefPtr<StyleValue> Parser::parse_single_shadow_value(TokenStream<StyleComponentValueRule>& tokens)
RefPtr<StyleValue> Parser::parse_single_shadow_value(TokenStream<StyleComponentValueRule>& tokens, AllowInsetKeyword allow_inset_keyword)
{
auto start_position = tokens.position();
auto error = [&]() {
@ -3395,7 +3395,8 @@ RefPtr<StyleValue> Parser::parse_single_shadow_value(TokenStream<StyleComponentV
continue;
}
if (token.is(Token::Type::Ident) && token.token().ident().equals_ignoring_case("inset"sv)) {
if (allow_inset_keyword == AllowInsetKeyword::Yes
&& token.is(Token::Type::Ident) && token.token().ident().equals_ignoring_case("inset"sv)) {
if (placement.has_value())
return error();
placement = ShadowPlacement::Inner;
@ -4248,7 +4249,7 @@ Result<NonnullRefPtr<StyleValue>, Parser::ParsingResult> Parser::parse_css_value
return parsed_value.release_nonnull();
return ParsingResult::SyntaxError;
case PropertyID::BoxShadow:
if (auto parsed_value = parse_shadow_value(component_values))
if (auto parsed_value = parse_shadow_value(component_values, AllowInsetKeyword::Yes))
return parsed_value.release_nonnull();
return ParsingResult::SyntaxError;
case PropertyID::Content: