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LibWeb: Parse overflow property using TokenStream

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Also simplify it a bit. We don't need to handle 1 / 2 values separately,
but past Sam didn't realise that.
This commit is contained in:
Sam Atkins 2023-12-08 17:09:03 +00:00 committed by Sam Atkins
parent 0578bec655
commit 4f773a7dae
Notes: sideshowbarker 2024-07-17 18:06:52 +09:00 
Author: https://github.com/AtkinsSJ
Commit: https://github.com/SerenityOS/serenity/commit/4f773a7dae
Pull-request: https://github.com/SerenityOS/serenity/pull/22439
2 changed files with 13 additions and 20 deletions
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27
Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
View File

@ -4492,29 +4492,22 @@ RefPtr<StyleValue> Parser::parse_math_depth_value(TokenStream<ComponentValue>& t
return nullptr;
}
RefPtr<StyleValue> Parser::parse_overflow_value(Vector<ComponentValue> const& component_values)
RefPtr<StyleValue> Parser::parse_overflow_value(TokenStream<ComponentValue>& tokens)
{
auto tokens = TokenStream { component_values };
if (component_values.size() == 1) {
auto maybe_value = parse_css_value_for_property(PropertyID::Overflow, tokens);
if (!maybe_value)
return nullptr;
return ShorthandStyleValue::create(PropertyID::Overflow,
{ PropertyID::OverflowX, PropertyID::OverflowY },
{ *maybe_value, *maybe_value });
}
if (component_values.size() == 2) {
auto transaction = tokens.begin_transaction();
auto maybe_x_value = parse_css_value_for_property(PropertyID::OverflowX, tokens);
auto maybe_y_value = parse_css_value_for_property(PropertyID::OverflowY, tokens);
if (!maybe_x_value || !maybe_y_value)
if (!maybe_x_value)
return nullptr;
auto maybe_y_value = parse_css_value_for_property(PropertyID::OverflowY, tokens);
transaction.commit();
if (maybe_y_value) {
return ShorthandStyleValue::create(PropertyID::Overflow,
{ PropertyID::OverflowX, PropertyID::OverflowY },
{ maybe_x_value.release_nonnull(), maybe_y_value.release_nonnull() });
}
return nullptr;
return ShorthandStyleValue::create(PropertyID::Overflow,
{ PropertyID::OverflowX, PropertyID::OverflowY },
{ *maybe_x_value, *maybe_x_value });
}
RefPtr<StyleValue> Parser::parse_place_content_value(Vector<ComponentValue> const& component_values)
@ -5915,7 +5908,7 @@ Parser::ParseErrorOr<NonnullRefPtr<StyleValue>> Parser::parse_css_value(Property
return parsed_value.release_nonnull();
return ParseError::SyntaxError;
case PropertyID::Overflow:
if (auto parsed_value = parse_overflow_value(component_values))
if (auto parsed_value = parse_overflow_value(tokens); parsed_value && !tokens.has_next_token())
return parsed_value.release_nonnull();
return ParseError::SyntaxError;
case PropertyID::PlaceContent:

2
Userland/Libraries/LibWeb/CSS/Parser/Parser.h
View File

@ -242,7 +242,7 @@ private:
RefPtr<StyleValue> parse_font_family_value(TokenStream<ComponentValue>&);
RefPtr<StyleValue> parse_list_style_value(TokenStream<ComponentValue>&);
RefPtr<StyleValue> parse_math_depth_value(TokenStream<ComponentValue>&);
RefPtr<StyleValue> parse_overflow_value(Vector<ComponentValue> const&);
RefPtr<StyleValue> parse_overflow_value(TokenStream<ComponentValue>&);
RefPtr<StyleValue> parse_place_content_value(Vector<ComponentValue> const&);
RefPtr<StyleValue> parse_place_items_value(Vector<ComponentValue> const&);
RefPtr<StyleValue> parse_place_self_value(Vector<ComponentValue> const&);