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			80 lines
		
	
	
	
		
			2.8 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			80 lines
		
	
	
	
		
			2.8 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
| /*
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|  * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
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|  * All rights reserved.
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|  *
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|  * Redistribution and use in source and binary forms, with or without
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|  * modification, are permitted provided that the following conditions are met:
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|  *
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|  * 1. Redistributions of source code must retain the above copyright notice, this
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|  *    list of conditions and the following disclaimer.
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|  *
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|  * 2. Redistributions in binary form must reproduce the above copyright notice,
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|  *    this list of conditions and the following disclaimer in the documentation
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|  *    and/or other materials provided with the distribution.
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|  *
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|  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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|  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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|  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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|  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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|  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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|  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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|  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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|  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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|  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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|  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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|  */
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| 
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| #include <LibWeb/DOM/Element.h>
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| #include <LibWeb/Parser/StackOfOpenElements.h>
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| 
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| namespace Web {
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| 
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| static Vector<FlyString> s_base_list { "applet", "caption", "html", "table", "td", "th", "marquee", "object", "template" };
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| 
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| StackOfOpenElements::~StackOfOpenElements()
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| {
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| }
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| 
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| bool StackOfOpenElements::has_in_scope_impl(const FlyString& tag_name, const Vector<FlyString>& list) const
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| {
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|     for (ssize_t i = m_elements.size() - 1; i >= 0; --i) {
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|         auto& node = m_elements.at(i);
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|         if (node.tag_name() == tag_name)
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|             return true;
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|         if (list.contains_slow(node.tag_name()))
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|             return false;
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|     }
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|     ASSERT_NOT_REACHED();
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| }
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| 
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| bool StackOfOpenElements::has_in_scope(const FlyString& tag_name) const
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| {
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|     return has_in_scope_impl(tag_name, s_base_list);
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| }
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| 
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| bool StackOfOpenElements::has_in_button_scope(const FlyString& tag_name) const
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| {
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|     auto list = s_base_list;
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|     list.append("button");
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|     return has_in_scope_impl(tag_name, list);
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| }
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| 
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| bool StackOfOpenElements::has_in_table_scope(const FlyString& tag_name) const
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| {
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|     auto list = s_base_list;
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|     list.append("html");
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|     list.append("table");
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|     list.append("template");
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|     return has_in_scope_impl(tag_name, list);
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| }
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| 
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| bool StackOfOpenElements::contains(const Element& element) const
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| {
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|     for (auto& element_on_stack : m_elements) {
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|         if (&element == &element_on_stack)
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|             return true;
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|     }
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|     return false;
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| }
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| 
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| }
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