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/*
* Copyright (c) 2020-2021, SerenityOS developers
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <AK/NonnullOwnPtrVector.h>
#include <AK/Vector.h>
#include <LibWeb/CSS/Parser/AtStyleRule.h>
#include <LibWeb/CSS/Parser/DeclarationOrAtRule.h>
#include <LibWeb/CSS/Parser/QualifiedStyleRule.h>
#include <LibWeb/CSS/Parser/StyleBlockRule.h>
#include <LibWeb/CSS/Parser/StyleComponentValueRule.h>
#include <LibWeb/CSS/Parser/StyleDeclarationRule.h>
#include <LibWeb/CSS/Parser/StyleFunctionRule.h>
#include <LibWeb/CSS/Parser/Tokenizer.h>
#include <LibWeb/CSS/Selector.h>
namespace Web::CSS {
class Parser {
public:
Parser(const StringView& input, const String& encoding = "utf-8");
~Parser();
// The normal parser entry point, for parsing stylesheets.
Vector<QualifiedStyleRule> parse_as_stylesheet();
// For the content of at-rules such as @media. It differs from "Parse a stylesheet" in the handling of <CDO-token> and <CDC-token>.
Vector<QualifiedStyleRule> parse_as_list_of_rules();
// For use by the CSSStyleSheet#insertRule method, and similar functions which might exist, which parse text into a single rule.
Optional<QualifiedStyleRule> parse_as_rule();
// Used in @supports conditions. [CSS3-CONDITIONAL]
Optional<StyleDeclarationRule> parse_as_declaration();
// For the contents of a style attribute, which parses text into the contents of a single style rule.
Vector<DeclarationOrAtRule> parse_as_list_of_declarations();
// For things that need to consume a single value, like the parsing rules for attr().
Optional<StyleComponentValueRule> parse_as_component_value();
// For the contents of presentational attributes, which parse text into a single declaration’s value, or for parsing a stand-alone selector [SELECT] or list of Media Queries [MEDIAQ], as in Selectors API or the media HTML attribute.
Vector<StyleComponentValueRule> parse_as_list_of_component_values();
Vector<StyleComponentValueRule> parse_as_list_of_comma_separated_component_values();
Vector<CSS::Selector::ComplexSelector> parse_selectors(Vector<String> parts);
// FIXME: https://www.w3.org/TR/selectors-4/
Optional<String> parse_a_selector() { return {}; }
Optional<String> parse_a_relative_selector() { return {}; }
bool match_a_selector_against_an_element() { return false; }
bool match_a_selector_against_a_pseudo_element() { return false; }
bool match_a_selector_against_a_tree() { return false; }
// FIXME: https://drafts.csswg.org/css-backgrounds-3/
static Optional<String> as_valid_background_repeat(String input) { return input; }
static Optional<String> as_valid_background_attachment(String input) { return input; }
static Optional<String> as_valid_background_position(String input) { return input; }
static Optional<String> as_valid_background_clip(String input) { return input; }
static Optional<String> as_valid_background_origin(String input) { return input; }
static Optional<String> as_valid_background_size(String input) { return input; }
static Optional<String> as_valid_border_style(String input) { return input; }
static Optional<String> as_valid_border_image_repeat(String input) { return input; }
void dump_all_tokens();
private:
Token next_token();
Token peek_token();
Token current_token();
void reconsume_current_input_token();
Vector<QualifiedStyleRule> consume_a_list_of_rules(bool top_level);
AtStyleRule consume_an_at_rule();
Optional<QualifiedStyleRule> consume_a_qualified_rule();
Vector<DeclarationOrAtRule> consume_a_list_of_declarations();
Optional<StyleDeclarationRule> consume_a_declaration(Vector<StyleComponentValueRule>);
Optional<StyleDeclarationRule> consume_a_declaration();
StyleComponentValueRule consume_a_component_value();
StyleBlockRule consume_a_simple_block();
StyleFunctionRule consume_a_function();
Tokenizer m_tokenizer;
Vector<Token> m_tokens;
int m_iterator_offset { -1 };
};
}
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