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LibWeb/CSS: Add option to retain a Declaration's full source text

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This will be needed by Supports, which expects declarations to serialize
verbatim.
This commit is contained in:
Sam Atkins 2025-12-01 14:24:24 +00:00
parent a8d0be4382
commit db910c68a3
Notes: github-actions[bot] 2025-12-02 09:50:50 +00:00
3 changed files with 22 additions and 6 deletions
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18
Libraries/LibWeb/CSS/Parser/Parser.cpp
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@ -1042,7 +1042,7 @@ void Parser::consume_a_function_and_do_nothing(TokenStream<Token>& input)
// https://drafts.csswg.org/css-syntax/#consume-declaration
template<typename T>
Optional<Declaration> Parser::consume_a_declaration(TokenStream<T>& input, Nested nested)
Optional<Declaration> Parser::consume_a_declaration(TokenStream<T>& input, Nested nested, SaveOriginalText save_full_text)
{
// To consume a declaration from a token stream input, given an optional bool nested (default false):
@ -1054,6 +1054,7 @@ Optional<Declaration> Parser::consume_a_declaration(TokenStream<T>& input, Neste
.name {},
.value {},
};
auto start_token_index = input.current_index();
// 1. If the next token is an <ident-token>, consume a token from input and set decl’s name to the token’s value.
if (input.next_token().is(Token::Type::Ident)) {
@ -1177,8 +1178,17 @@ Optional<Declaration> Parser::consume_a_declaration(TokenStream<T>& input, Neste
}
// 9. If decl is valid in the current context, return it; otherwise return nothing.
if (is_valid_in_the_current_context(declaration))
if (is_valid_in_the_current_context(declaration)) {
// AD-HOC: Assemble source tokens.
if (save_full_text == SaveOriginalText::Yes) {
StringBuilder original_full_text;
for (auto& token : input.tokens_since(start_token_index))
original_full_text.append(token.to_string());
declaration.original_full_text = original_full_text.to_string_without_validation();
}
return declaration;
}
return {};
}
@ -1929,8 +1939,8 @@ template Vector<RuleOrListOfDeclarations> Parser::consume_a_blocks_contents(Toke
template Vector<ComponentValue> Parser::consume_a_list_of_component_values(TokenStream<ComponentValue>&, Optional<Token::Type>, Nested);
template Vector<ComponentValue> Parser::consume_a_list_of_component_values(TokenStream<Token>&, Optional<Token::Type>, Nested);
template Optional<Declaration> Parser::consume_a_declaration(TokenStream<Token>&, Nested);
template Optional<Declaration> Parser::consume_a_declaration(TokenStream<ComponentValue>&, Nested);
template Optional<Declaration> Parser::consume_a_declaration(TokenStream<Token>&, Nested, SaveOriginalText);
template Optional<Declaration> Parser::consume_a_declaration(TokenStream<ComponentValue>&, Nested, SaveOriginalText);
template void Parser::consume_the_remnants_of_a_bad_declaration(TokenStream<Token>&, Nested);
template void Parser::consume_the_remnants_of_a_bad_declaration(TokenStream<ComponentValue>&, Nested);