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// 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 12.2.3.2 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,
    "isindex":    true,
    "li":         true,
    "link":       true,
    "listing":    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 "svg":
        return element.Data == "foreignObject"
    }
    return false
}