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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsElementTable.h"
static const int kNone= 0x0;
static const int kHTMLContent = 0x0001; // HEAD, (FRAMESET | BODY)
static const int kHeadContent = 0x0002; // Elements that *must* be in the head.
static const int kHeadMisc = 0x0004; // Elements that *can* be in the head.
static const int kSpecial = 0x0008; // A, IMG, APPLET, OBJECT, FONT, BASEFONT, BR, SCRIPT,
// MAP, Q, SUB, SUP, SPAN, BDO, IFRAME
static const int kFormControl = 0x0010; // INPUT SELECT TEXTAREA LABEL BUTTON
static const int kPreformatted = 0x0020; // PRE
static const int kPreExclusion = 0x0040; // IMG, OBJECT, APPLET, BIG, SMALL, SUB, SUP, FONT, BASEFONT
static const int kFontStyle = 0x0080; // TT, I, B, U, S, STRIKE, BIG, SMALL
static const int kPhrase = 0x0100; // EM, STRONG, DFN, CODE, SAMP, KBD, VAR, CITE, ABBR, ACRONYM
static const int kHeading = 0x0200; // H1..H6
static const int kBlockMisc = 0x0400; // OBJECT, SCRIPT
static const int kBlock = 0x0800; // ADDRESS, BLOCKQUOTE, CENTER, DIV, DL, FIELDSET, FORM,
// ISINDEX, HR, NOSCRIPT, NOFRAMES, P, TABLE
static const int kList = 0x1000; // UL, OL, DIR, MENU
static const int kPCDATA = 0x2000; // plain text and entities...
static const int kSelf = 0x4000; // whatever THIS tag is...
static const int kExtensions = 0x8000; // BGSOUND, WBR, NOBR
static const int kTable = 0x10000;// TR,TD,THEAD,TBODY,TFOOT,CAPTION,TH
static const int kDLChild = 0x20000;// DL, DT
static const int kCDATA = 0x40000;// just plain text...
static const int kInlineEntity = (kPCDATA|kFontStyle|kPhrase|kSpecial|kFormControl|kExtensions); // #PCDATA, %fontstyle, %phrase, %special, %formctrl
static const int kBlockEntity = (kHeading|kList|kPreformatted|kBlock); // %heading, %list, %preformatted, %block
static const int kFlowEntity = (kBlockEntity|kInlineEntity); // %blockentity, %inlineentity
static const int kAllTags = 0xffffff;
// Is aTest a member of aBitset?
static bool
TestBits(int32_t aBitset, int32_t aTest)
{
if (aTest) {
int32_t result = aBitset & aTest;
return result == aTest;
}
return false;
}
struct HTMLElement
{
bool IsMemberOf(int32_t aBitset) const
{
return TestBits(aBitset, mParentBits);
}
#ifdef DEBUG
nsHTMLTag mTagID;
#endif
int mParentBits; // defines groups that can contain this element
bool mLeaf;
};
#ifdef DEBUG
#define ELEM(tag, parent, leaf) { eHTMLTag_##tag, parent, leaf },
#else
#define ELEM(tag, parent, leaf) { parent, leaf },
#endif
static const HTMLElement gHTMLElements[] = {
ELEM(unknown, kNone, true)
ELEM(a, kSpecial, false)
ELEM(abbr, kPhrase, false)
ELEM(acronym, kPhrase, false)
ELEM(address, kBlock, false)
ELEM(applet, kSpecial, false)
ELEM(area, kNone, true)
ELEM(article, kBlock, false)
ELEM(aside, kBlock, false)
ELEM(audio, kSpecial, false)
ELEM(b, kFontStyle, false)
ELEM(base, kHeadContent, true)
ELEM(basefont, kSpecial, true)
ELEM(bdo, kSpecial, false)
ELEM(bgsound, (kFlowEntity|kHeadMisc), true)
ELEM(big, kFontStyle, false)
ELEM(blockquote, kBlock, false)
ELEM(body, kHTMLContent, false)
ELEM(br, kSpecial, true)
ELEM(button, kFormControl, false)
ELEM(canvas, kSpecial, false)
ELEM(caption, kNone, false)
ELEM(center, kBlock, false)
ELEM(cite, kPhrase, false)
ELEM(code, kPhrase, false)
ELEM(col, kNone, true)
ELEM(colgroup, kNone, false)
ELEM(content, kNone, false)
ELEM(data, kPhrase, false)
ELEM(datalist, kSpecial, false)
ELEM(dd, kInlineEntity, false)
ELEM(del, kFlowEntity, false)
ELEM(details, kBlock, false)
ELEM(dfn, kPhrase, false)
ELEM(dialog, kBlock, false)
ELEM(dir, kList, false)
ELEM(div, kBlock, false)
ELEM(dl, kBlock, false)
ELEM(dt, kInlineEntity, false)
ELEM(em, kPhrase, false)
ELEM(embed, kSpecial, true)
ELEM(fieldset, kBlock, false)
ELEM(figcaption, kPhrase, false)
ELEM(figure, kBlock, false)
ELEM(font, kFontStyle, false)
ELEM(footer, kBlock, false)
ELEM(form, kBlock, false)
ELEM(frame, kNone, true)
ELEM(frameset, kHTMLContent, false)
ELEM(h1, kHeading, false)
ELEM(h2, kHeading, false)
ELEM(h3, kHeading, false)
ELEM(h4, kHeading, false)
ELEM(h5, kHeading, false)
ELEM(h6, kHeading, false)
ELEM(head, kHTMLContent, false)
ELEM(header, kBlock, false)
ELEM(hgroup, kBlock, false)
ELEM(hr, kBlock, true)
ELEM(html, kNone, false)
ELEM(i, kFontStyle, false)
ELEM(iframe, kSpecial, false)
ELEM(image, kSpecial, true)
ELEM(img, kSpecial, true)
ELEM(input, kFormControl, true)
ELEM(ins, kFlowEntity, false)
ELEM(kbd, kPhrase, false)
ELEM(keygen, kFlowEntity, true)
ELEM(label, kFormControl, false)
ELEM(legend, kNone, false)
ELEM(li, kBlockEntity, false)
ELEM(link, kAllTags - kHeadContent, true)
ELEM(listing, kPreformatted, false)
ELEM(main, kBlock, false)
ELEM(map, kSpecial, false)
ELEM(mark, kSpecial, false)
ELEM(marquee, kSpecial, false)
ELEM(menu, kList, false)
ELEM(menuitem, kFlowEntity, false)
ELEM(meta, kHeadContent, true)
ELEM(meter, kFormControl, false)
ELEM(multicol, kBlock, false)
ELEM(nav, kBlock, false)
ELEM(nobr, kExtensions, false)
ELEM(noembed, kFlowEntity, false)
ELEM(noframes, kFlowEntity, false)
ELEM(noscript, kFlowEntity|kHeadMisc, false)
ELEM(object, kSpecial, false)
ELEM(ol, kList, false)
ELEM(optgroup, kNone, false)
ELEM(option, kNone, false)
ELEM(output, kSpecial, false)
ELEM(p, kBlock, false)
ELEM(param, kSpecial, true)
ELEM(picture, kSpecial, false)
ELEM(plaintext, kExtensions, false)
ELEM(pre, kBlock|kPreformatted, false)
ELEM(progress, kFormControl, false)
ELEM(q, kSpecial, false)
ELEM(rb, kPhrase, false)
ELEM(rp, kPhrase, false)
ELEM(rt, kPhrase, false)
ELEM(rtc, kPhrase, false)
ELEM(ruby, kPhrase, false)
ELEM(s, kFontStyle, false)
ELEM(samp, kPhrase, false)
ELEM(script, (kSpecial|kHeadContent), false)
ELEM(section, kBlock, false)
ELEM(select, kFormControl, false)
ELEM(shadow, kFlowEntity, false)
ELEM(small, kFontStyle, false)
ELEM(source, kSpecial, true)
ELEM(span, kSpecial, false)
ELEM(strike, kFontStyle, false)
ELEM(strong, kPhrase, false)
ELEM(style, kAllTags - kHeadContent, false)
ELEM(sub, kSpecial, false)
ELEM(summary, kBlock, false)
ELEM(sup, kSpecial, false)
ELEM(table, kBlock, false)
ELEM(tbody, kNone, false)
ELEM(td, kNone, false)
ELEM(textarea, kFormControl, false)
ELEM(tfoot, kNone, false)
ELEM(th, kNone, false)
ELEM(thead, kNone, false)
ELEM(template, kNone, false)
ELEM(time, kPhrase, false)
ELEM(title, kHeadContent, false)
ELEM(tr, kNone, false)
ELEM(track, kSpecial, true)
ELEM(tt, kFontStyle, false)
ELEM(u, kFontStyle, false)
ELEM(ul, kList, false)
ELEM(var, kPhrase, false)
ELEM(video, kSpecial, false)
ELEM(wbr, kExtensions, true)
ELEM(xmp, kInlineEntity|kPreformatted, false)
ELEM(text, kFlowEntity, true)
ELEM(whitespace, kFlowEntity|kHeadMisc, true)
ELEM(newline, kFlowEntity|kHeadMisc, true)
ELEM(comment, kFlowEntity|kHeadMisc, false)
ELEM(entity, kFlowEntity, false)
ELEM(doctypeDecl, kFlowEntity, false)
ELEM(markupDecl, kFlowEntity, false)
ELEM(instruction, kFlowEntity, false)
ELEM(userdefined, (kFlowEntity|kHeadMisc), false)
};
#undef ELEM
bool
nsHTMLElement::IsContainer(nsHTMLTag aId)
{
return !gHTMLElements[aId].mLeaf;
}
bool
nsHTMLElement::IsBlock(nsHTMLTag aId)
{
return gHTMLElements[aId].IsMemberOf(kBlock) ||
gHTMLElements[aId].IsMemberOf(kBlockEntity) ||
gHTMLElements[aId].IsMemberOf(kHeading) ||
gHTMLElements[aId].IsMemberOf(kPreformatted)||
gHTMLElements[aId].IsMemberOf(kList);
}
#ifdef DEBUG
void
CheckElementTable()
{
for (nsHTMLTag t = eHTMLTag_unknown;
t <= eHTMLTag_userdefined;
t = nsHTMLTag(t + 1)) {
MOZ_ASSERT(gHTMLElements[t].mTagID == t,
"gHTMLElements entries does match tag list.");
}
}
#endif
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