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LibWeb: Propagate errors from CSS Parser construction
This requires Parser to be movable, so we remove the `default` destructors from Parser and TokenStream, and give them both move constructors. Since TokenStream only holds a reference to its tokens, (and it needs to, to avoid copying when given eg a function's contents,) we add a manual move constructor for Parser which creates a new TokenStream from the new Parser's tokens, and then manually copies the old TokenStream's state.
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3 changed files with 47 additions and 22 deletions
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@ -1,6 +1,6 @@
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/*
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* Copyright (c) 2020-2021, the SerenityOS developers.
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* Copyright (c) 2021-2022, Sam Atkins <atkinssj@serenityos.org>
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* Copyright (c) 2021-2023, Sam Atkins <atkinssj@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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@ -57,8 +57,9 @@ private:
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class Parser {
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public:
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Parser(ParsingContext const&, StringView input, StringView encoding = "utf-8"sv);
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~Parser() = default;
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static ErrorOr<Parser> create(ParsingContext const&, StringView input, StringView encoding = "utf-8"sv);
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Parser(Parser&&);
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CSSStyleSheet* parse_as_css_stylesheet(Optional<AK::URL> location);
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ElementInlineCSSStyleDeclaration* parse_as_style_attribute(DOM::Element&);
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@ -87,6 +88,8 @@ public:
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static RefPtr<CalculatedStyleValue> parse_calculated_value(Badge<StyleComputer>, ParsingContext const&, Vector<ComponentValue> const&);
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private:
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Parser(ParsingContext const&, Vector<Token>);
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enum class ParseError {
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IncludesIgnoredVendorPrefix,
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SyntaxError,
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