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LibWeb: Don't assume grid-line parts are Tokens

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This stops `grid-row-start: {}` from crashing.

Also tidy up the parsing code a little.
This commit is contained in:
Sam Atkins 2023-11-21 11:46:49 +00:00 • committed by Andreas Kling
parent 1f6e13d8fe
commit 314a30b12e
3 changed files with 27 additions and 24 deletions
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38
Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
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@ -5345,42 +5345,32 @@ RefPtr<StyleValue> Parser::parse_grid_track_placement(Vector<ComponentValue> con
// <custom-ident> |
// [ <integer> && <custom-ident>? ] |
// [ span && [ <integer> || <custom-ident> ] ]
auto is_auto = [](Token token) -> bool {
if (token.is(Token::Type::Ident) && token.ident().equals_ignoring_ascii_case("auto"sv))
return true;
return false;
};
auto is_span = [](Token token) -> bool {
if (token.is(Token::Type::Ident) && token.ident().equals_ignoring_ascii_case("span"sv))
return true;
return false;
};
auto is_valid_integer = [](Token token) -> bool {
auto is_valid_integer = [](auto& token) -> bool {
// An <integer> value of zero makes the declaration invalid.
if (token.is(Token::Type::Number) && token.number().is_integer() && token.number_value() != 0)
if (token.is(Token::Type::Number) && token.token().number().is_integer() && token.token().number_value() != 0)
return true;
return false;
};
auto is_identifier = [](Token token) -> bool {
auto is_identifier = [](auto& token) -> bool {
// The <custom-ident> additionally excludes the keywords span and auto.
if (token.is(Token::Type::Ident) && !token.ident().equals_ignoring_ascii_case("span"sv) && !token.ident().equals_ignoring_ascii_case("auto"sv))
if (token.is(Token::Type::Ident) && !token.token().ident().equals_ignoring_ascii_case("span"sv) && !token.token().ident().equals_ignoring_ascii_case("auto"sv))
return true;
return false;
};
auto tokens = TokenStream { component_values };
tokens.skip_whitespace();
auto current_token = tokens.next_token().token();
auto current_token = tokens.next_token();
if (!tokens.has_next_token()) {
if (is_auto(current_token))
if (current_token.is_ident("auto"sv))
return GridTrackPlacementStyleValue::create(GridTrackPlacement::make_auto());
if (is_span(current_token))
if (current_token.is_ident("span"sv))
return GridTrackPlacementStyleValue::create(GridTrackPlacement::make_span(1));
if (is_valid_integer(current_token))
return GridTrackPlacementStyleValue::create(GridTrackPlacement::make_line(static_cast<int>(current_token.number_value()), {}));
return GridTrackPlacementStyleValue::create(GridTrackPlacement::make_line(static_cast<int>(current_token.token().number_value()), {}));
if (is_identifier(current_token)) {
auto maybe_string = String::from_utf8(current_token.ident());
auto maybe_string = String::from_utf8(current_token.token().ident());
if (!maybe_string.is_error())
return GridTrackPlacementStyleValue::create(GridTrackPlacement::make_line({}, maybe_string.value()));
}
@ -5391,9 +5381,9 @@ RefPtr<StyleValue> Parser::parse_grid_track_placement(Vector<ComponentValue> con
auto span_or_position_value = 0;
String identifier_value;
while (true) {
if (is_auto(current_token))
if (current_token.is_ident("auto"sv))
return nullptr;
if (is_span(current_token)) {
if (current_token.is_ident("span"sv)) {
if (span_value == false)
span_value = true;
else
@ -5401,13 +5391,13 @@ RefPtr<StyleValue> Parser::parse_grid_track_placement(Vector<ComponentValue> con
}
if (is_valid_integer(current_token)) {
if (span_or_position_value == 0)
span_or_position_value = static_cast<int>(current_token.number_value());
span_or_position_value = static_cast<int>(current_token.token().number_value());
else
return nullptr;
}
if (is_identifier(current_token)) {
if (identifier_value.is_empty()) {
auto maybe_string = String::from_utf8(current_token.ident());
auto maybe_string = String::from_utf8(current_token.token().ident());
if (maybe_string.is_error())
return nullptr;
identifier_value = maybe_string.release_value();
@ -5417,7 +5407,7 @@ RefPtr<StyleValue> Parser::parse_grid_track_placement(Vector<ComponentValue> con
}
tokens.skip_whitespace();
if (tokens.has_next_token())
current_token = tokens.next_token().token();
current_token = tokens.next_token();
else
break;
}