// Copyright 2011 The Go Authors. All rights reserved.

// Use of this source code is governed by a BSD-style

// license that can be found in the LICENSE file.

package html

// Section 12.2.4.2 of the HTML5 specification says "The following elements

// have varying levels of special parsing rules".

// https://html.spec.whatwg.org/multipage/syntax.html#the-stack-of-open-elements

var isSpecialElementMap = map[string]bool{

	"address":    true,

	"applet":     true,

	"area":       true,

	"article":    true,

	"aside":      true,

	"base":       true,

	"basefont":   true,

	"bgsound":    true,

	"blockquote": true,

	"body":       true,

	"br":         true,

	"button":     true,

	"caption":    true,

	"center":     true,

	"col":        true,

	"colgroup":   true,

	"dd":         true,

	"details":    true,

	"dir":        true,

	"div":        true,

	"dl":         true,

	"dt":         true,

	"embed":      true,

	"fieldset":   true,

	"figcaption": true,

	"figure":     true,

	"footer":     true,

	"form":       true,

	"frame":      true,

	"frameset":   true,

	"h1":         true,

	"h2":         true,

	"h3":         true,

	"h4":         true,

	"h5":         true,

	"h6":         true,

	"head":       true,

	"header":     true,

	"hgroup":     true,

	"hr":         true,

	"html":       true,

	"iframe":     true,

	"img":        true,

	"input":      true,

	"keygen":     true,

	"li":         true,

	"link":       true,

	"listing":    true,

	"main":       true,

	"marquee":    true,

	"menu":       true,

	"meta":       true,

	"nav":        true,

	"noembed":    true,

	"noframes":   true,

	"noscript":   true,

	"object":     true,

	"ol":         true,

	"p":          true,

	"param":      true,

	"plaintext":  true,

	"pre":        true,

	"script":     true,

	"section":    true,

	"select":     true,

	"source":     true,

	"style":      true,

	"summary":    true,

	"table":      true,

	"tbody":      true,

	"td":         true,

	"template":   true,

	"textarea":   true,

	"tfoot":      true,

	"th":         true,

	"thead":      true,

	"title":      true,

	"tr":         true,

	"track":      true,

	"ul":         true,

	"wbr":        true,

	"xmp":        true,

}

func isSpecialElement(element *Node) bool {

	switch element.Namespace {

	case "", "html":

		return isSpecialElementMap[element.Data]

	case "math":

		switch element.Data {

		case "mi", "mo", "mn", "ms", "mtext", "annotation-xml":

			return true

		}

	case "svg":

		switch element.Data {

		case "foreignObject", "desc", "title":

			return true

		}

	}

	return false

}