ComponentValue.h 1.6 KB

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  1. /*
  2. * Copyright (c) 2020-2021, the SerenityOS developers.
  3. * Copyright (c) 2021-2022, Sam Atkins <atkinssj@serenityos.org>
  4. *
  5. * SPDX-License-Identifier: BSD-2-Clause
  6. */
  7. #pragma once
  8. #include <AK/NonnullRefPtr.h>
  9. #include <AK/RefPtr.h>
  10. #include <LibWeb/CSS/Parser/Token.h>
  11. #include <LibWeb/Forward.h>
  12. namespace Web::CSS::Parser {
  13. // https://www.w3.org/TR/css-syntax-3/#component-value
  14. class ComponentValue {
  15. public:
  16. ComponentValue(Token);
  17. explicit ComponentValue(NonnullRefPtr<Function>);
  18. explicit ComponentValue(NonnullRefPtr<Block>);
  19. ~ComponentValue();
  20. bool is_block() const { return m_value.has<NonnullRefPtr<Block>>(); }
  21. Block const& block() const { return m_value.get<NonnullRefPtr<Block>>(); }
  22. bool is_function() const { return m_value.has<NonnullRefPtr<Function>>(); }
  23. Function const& function() const { return m_value.get<NonnullRefPtr<Function>>(); }
  24. bool is_token() const { return m_value.has<Token>(); }
  25. bool is(Token::Type type) const { return is_token() && token().is(type); }
  26. Token const& token() const { return m_value.get<Token>(); }
  27. operator Token() const { return m_value.get<Token>(); }
  28. String to_string() const;
  29. String to_debug_string() const;
  30. private:
  31. Variant<Token, NonnullRefPtr<Function>, NonnullRefPtr<Block>> m_value;
  32. };
  33. }
  34. template<>
  35. struct AK::Formatter<Web::CSS::Parser::ComponentValue> : Formatter<StringView> {
  36. ErrorOr<void> format(FormatBuilder& builder, Web::CSS::Parser::ComponentValue const& component_value)
  37. {
  38. return Formatter<StringView>::format(builder, component_value.to_string());
  39. }
  40. };