module Phlex::Elements

def register_element(element, tag: element.name.tr("_", "-"))
	class_eval(<<-RUBY, __FILE__, __LINE__ + 1)
		# frozen_string_literal: true
		def #{element}(**attributes, &block)
			target = @_context.target
			if attributes.length > 0 # with attributes
				if block_given? # with content block
					target << "<#{tag}" << (Phlex::ATTRIBUTE_CACHE[respond_to?(:process_attributes) ? (attributes.hash + self.class.hash) : attributes.hash] || __attributes__(**attributes)) << ">"
					yield_content(&block)
					target << "</#{tag}>"
				else # without content block
					target << "<#{tag}" << (Phlex::ATTRIBUTE_CACHE[respond_to?(:process_attributes) ? (attributes.hash + self.class.hash) : attributes.hash] || __attributes__(**attributes)) << "></#{tag}>"
				end
			else # without attributes
				if block_given? # with content block
					target << "<#{tag}>"
					yield_content(&block)
					target << "</#{tag}>"
				else # without content block
					target << "<#{tag}></#{tag}>"
				end
			end
			nil
		end
		alias_method :_#{element}, :#{element}
	RUBY
	registered_elements[element] = tag
	element
end

def register_void_element(element, tag: element.name.tr("_", "-"))
	class_eval(<<-RUBY, __FILE__, __LINE__ + 1)
		# frozen_string_literal: true
		def #{element}(**attributes)
			target = @_context.target
			if attributes.length > 0 # with attributes
				target << "<#{tag}" << (Phlex::ATTRIBUTE_CACHE[respond_to?(:process_attributes) ? (attributes.hash + self.class.hash) : attributes.hash] || __attributes__(**attributes)) << ">"
			else # without attributes
				target << "<#{tag}>"
			end
			nil
		end
		alias_method :_#{element}, :#{element}
	RUBY
	registered_elements[element] = tag
	element
end

def registered_elements
	@registered_elements ||= Concurrent::Map.new
end