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|
/* 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 "nsHtml5Highlighter.h"
#include "ErrorList.h"
#include "nsDebug.h"
#include "nsHtml5AttributeName.h"
#include "nsHtml5Tokenizer.h"
#include "nsHtml5ViewSourceUtils.h"
#include "nsString.h"
#include "nsThreadUtils.h"
#include "mozilla/Attributes.h"
#include "mozilla/Preferences.h"
using namespace mozilla;
// The old code had a limit of 16 tokens. 1300 is a number picked my measuring
// the size of 16 tokens on cnn.com.
#define NS_HTML5_HIGHLIGHTER_PRE_BREAK_THRESHOLD 1300
char16_t nsHtml5Highlighter::sComment[] = {'c', 'o', 'm', 'm',
'e', 'n', 't', 0};
char16_t nsHtml5Highlighter::sCdata[] = {'c', 'd', 'a', 't', 'a', 0};
char16_t nsHtml5Highlighter::sEntity[] = {'e', 'n', 't', 'i', 't', 'y', 0};
char16_t nsHtml5Highlighter::sEndTag[] = {'e', 'n', 'd', '-', 't', 'a', 'g', 0};
char16_t nsHtml5Highlighter::sStartTag[] = {'s', 't', 'a', 'r', 't',
'-', 't', 'a', 'g', 0};
char16_t nsHtml5Highlighter::sAttributeName[] = {
'a', 't', 't', 'r', 'i', 'b', 'u', 't', 'e', '-', 'n', 'a', 'm', 'e', 0};
char16_t nsHtml5Highlighter::sAttributeValue[] = {'a', 't', 't', 'r', 'i', 'b',
'u', 't', 'e', '-', 'v', 'a',
'l', 'u', 'e', 0};
char16_t nsHtml5Highlighter::sDoctype[] = {'d', 'o', 'c', 't',
'y', 'p', 'e', 0};
char16_t nsHtml5Highlighter::sPi[] = {'p', 'i', 0};
nsHtml5Highlighter::nsHtml5Highlighter(nsAHtml5TreeOpSink* aOpSink)
: mState(nsHtml5Tokenizer::DATA),
mCStart(INT32_MAX),
mPos(0),
mLineNumber(1),
mInlinesOpen(0),
mInCharacters(false),
mBuffer(nullptr),
mOpSink(aOpSink),
mCurrentRun(nullptr),
mAmpersand(nullptr),
mSlash(nullptr),
mHandles(
MakeUnique<nsIContent*[]>(NS_HTML5_HIGHLIGHTER_HANDLE_ARRAY_LENGTH)),
mHandlesUsed(0),
mSeenBase(false) {
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
}
nsHtml5Highlighter::~nsHtml5Highlighter() {
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
}
void nsHtml5Highlighter::SetOpSink(nsAHtml5TreeOpSink* aOpSink) {
mOpSink = aOpSink;
}
void nsHtml5Highlighter::Rewind() {
mState = 0;
mCStart = INT32_MAX;
mPos = 0;
mLineNumber = 1;
mInlinesOpen = 0;
mInCharacters = false;
mBuffer = nullptr;
mOpQueue.Clear();
mCurrentRun = nullptr;
mAmpersand = nullptr;
mSlash = nullptr;
// Pop until we have three elements on the stack:
// html, body, and pre.
while (mStack.Length() > 3) {
Pop();
}
mSeenBase = false;
}
void nsHtml5Highlighter::Start(const nsAutoString& aTitle) {
// Doctype
opAppendDoctypeToDocument operation(nsGkAtoms::html, u""_ns, u""_ns);
mOpQueue.AppendElement()->Init(mozilla::AsVariant(operation));
mOpQueue.AppendElement()->Init(mozilla::AsVariant(STANDARDS_MODE));
// <html> uses NS_NewHTMLSharedElement creator
nsIContent** root =
CreateElement(nsGkAtoms::html, nullptr, nullptr, NS_NewHTMLSharedElement);
opAppendToDocument appendOp(root);
mOpQueue.AppendElement()->Init(mozilla::AsVariant(appendOp));
mStack.AppendElement(root);
// <head> uses NS_NewHTMLSharedElement creator
Push(nsGkAtoms::head, nullptr, NS_NewHTMLSharedElement);
Push(nsGkAtoms::meta, nsHtml5ViewSourceUtils::NewMetaViewportAttributes(),
NS_NewHTMLMetaElement);
Pop(); // meta
Push(nsGkAtoms::title, nullptr, NS_NewHTMLTitleElement);
// XUL will add the "Source of: " prefix.
uint32_t length = aTitle.Length();
if (length > INT32_MAX) {
length = INT32_MAX;
}
AppendCharacters(aTitle.BeginReading(), 0, (int32_t)length);
Pop(); // title
Push(nsGkAtoms::link, nsHtml5ViewSourceUtils::NewLinkAttributes(),
NS_NewHTMLLinkElement);
opUpdateStyleSheet updateOp(CurrentNode());
mOpQueue.AppendElement()->Init(mozilla::AsVariant(updateOp));
Pop(); // link
Pop(); // head
Push(nsGkAtoms::body, nsHtml5ViewSourceUtils::NewBodyAttributes(),
NS_NewHTMLBodyElement);
nsHtml5HtmlAttributes* preAttrs = new nsHtml5HtmlAttributes(0);
nsHtml5String preId = nsHtml5Portability::newStringFromLiteral("line1");
preAttrs->addAttribute(nsHtml5AttributeName::ATTR_ID, preId, -1);
Push(nsGkAtoms::pre, preAttrs, NS_NewHTMLPreElement);
// Don't call StartCharacters here in order to be able to put it in
// a speculation.
mOpQueue.AppendElement()->Init(mozilla::AsVariant(opStartLayout()));
}
void nsHtml5Highlighter::UpdateCharsetSource(nsCharsetSource aCharsetSource) {
opUpdateCharsetSource operation(aCharsetSource);
mOpQueue.AppendElement()->Init(mozilla::AsVariant(operation));
}
int32_t nsHtml5Highlighter::Transition(int32_t aState, bool aReconsume,
int32_t aPos) {
mPos = aPos;
switch (mState) {
case nsHtml5Tokenizer::SCRIPT_DATA:
case nsHtml5Tokenizer::RAWTEXT:
case nsHtml5Tokenizer::RCDATA:
case nsHtml5Tokenizer::DATA:
// We can transition on < and on &. Either way, we don't yet know the
// role of the token, so open a span without class.
if (aState == nsHtml5Tokenizer::CONSUME_CHARACTER_REFERENCE) {
StartSpan();
// Start another span for highlighting the ampersand
StartSpan();
mAmpersand = CurrentNode();
} else {
EndCharactersAndStartMarkupRun();
}
break;
case nsHtml5Tokenizer::TAG_OPEN:
switch (aState) {
case nsHtml5Tokenizer::TAG_NAME:
StartSpan(sStartTag);
break;
case nsHtml5Tokenizer::DATA:
FinishTag(); // DATA
break;
case nsHtml5Tokenizer::PROCESSING_INSTRUCTION:
AddClass(sPi);
break;
}
break;
case nsHtml5Tokenizer::TAG_NAME:
switch (aState) {
case nsHtml5Tokenizer::BEFORE_ATTRIBUTE_NAME:
EndSpanOrA(); // nsHtml5Tokenizer::TAG_NAME
break;
case nsHtml5Tokenizer::SELF_CLOSING_START_TAG:
EndSpanOrA(); // nsHtml5Tokenizer::TAG_NAME
StartSpan(); // for highlighting the slash
mSlash = CurrentNode();
break;
default:
FinishTag();
break;
}
break;
case nsHtml5Tokenizer::BEFORE_ATTRIBUTE_NAME:
switch (aState) {
case nsHtml5Tokenizer::ATTRIBUTE_NAME:
StartSpan(sAttributeName);
break;
case nsHtml5Tokenizer::SELF_CLOSING_START_TAG:
StartSpan(); // for highlighting the slash
mSlash = CurrentNode();
break;
default:
FinishTag();
break;
}
break;
case nsHtml5Tokenizer::ATTRIBUTE_NAME:
switch (aState) {
case nsHtml5Tokenizer::AFTER_ATTRIBUTE_NAME:
case nsHtml5Tokenizer::BEFORE_ATTRIBUTE_VALUE:
EndSpanOrA(); // nsHtml5Tokenizer::BEFORE_ATTRIBUTE_NAME
break;
case nsHtml5Tokenizer::SELF_CLOSING_START_TAG:
EndSpanOrA(); // nsHtml5Tokenizer::BEFORE_ATTRIBUTE_NAME
StartSpan(); // for highlighting the slash
mSlash = CurrentNode();
break;
default:
FinishTag();
break;
}
break;
case nsHtml5Tokenizer::BEFORE_ATTRIBUTE_VALUE:
switch (aState) {
case nsHtml5Tokenizer::ATTRIBUTE_VALUE_DOUBLE_QUOTED:
case nsHtml5Tokenizer::ATTRIBUTE_VALUE_SINGLE_QUOTED:
FlushCurrent();
StartA();
break;
case nsHtml5Tokenizer::ATTRIBUTE_VALUE_UNQUOTED:
StartA();
break;
default:
FinishTag();
break;
}
break;
case nsHtml5Tokenizer::ATTRIBUTE_VALUE_DOUBLE_QUOTED:
case nsHtml5Tokenizer::ATTRIBUTE_VALUE_SINGLE_QUOTED:
switch (aState) {
case nsHtml5Tokenizer::AFTER_ATTRIBUTE_VALUE_QUOTED:
EndSpanOrA();
break;
case nsHtml5Tokenizer::CONSUME_CHARACTER_REFERENCE:
StartSpan();
StartSpan(); // for ampersand itself
mAmpersand = CurrentNode();
break;
default:
MOZ_ASSERT_UNREACHABLE("Impossible transition.");
break;
}
break;
case nsHtml5Tokenizer::AFTER_ATTRIBUTE_VALUE_QUOTED:
switch (aState) {
case nsHtml5Tokenizer::BEFORE_ATTRIBUTE_NAME:
break;
case nsHtml5Tokenizer::SELF_CLOSING_START_TAG:
StartSpan(); // for highlighting the slash
mSlash = CurrentNode();
break;
default:
FinishTag();
break;
}
break;
case nsHtml5Tokenizer::SELF_CLOSING_START_TAG:
EndSpanOrA(); // end the slash highlight
switch (aState) {
case nsHtml5Tokenizer::BEFORE_ATTRIBUTE_NAME:
break;
default:
FinishTag();
break;
}
break;
case nsHtml5Tokenizer::ATTRIBUTE_VALUE_UNQUOTED:
switch (aState) {
case nsHtml5Tokenizer::BEFORE_ATTRIBUTE_NAME:
EndSpanOrA();
break;
case nsHtml5Tokenizer::CONSUME_CHARACTER_REFERENCE:
StartSpan();
StartSpan(); // for ampersand itself
mAmpersand = CurrentNode();
break;
default:
FinishTag();
break;
}
break;
case nsHtml5Tokenizer::AFTER_ATTRIBUTE_NAME:
switch (aState) {
case nsHtml5Tokenizer::SELF_CLOSING_START_TAG:
StartSpan(); // for highlighting the slash
mSlash = CurrentNode();
break;
case nsHtml5Tokenizer::BEFORE_ATTRIBUTE_VALUE:
break;
case nsHtml5Tokenizer::ATTRIBUTE_NAME:
StartSpan(sAttributeName);
break;
default:
FinishTag();
break;
}
break;
// most comment states are omitted, because they don't matter to
// highlighting
case nsHtml5Tokenizer::COMMENT_START:
case nsHtml5Tokenizer::COMMENT_END:
case nsHtml5Tokenizer::COMMENT_END_BANG:
case nsHtml5Tokenizer::COMMENT_START_DASH:
case nsHtml5Tokenizer::BOGUS_COMMENT:
case nsHtml5Tokenizer::BOGUS_COMMENT_HYPHEN:
case nsHtml5Tokenizer::COMMENT_LESSTHAN_BANG_DASH_DASH:
if (aState == nsHtml5Tokenizer::DATA) {
AddClass(sComment);
FinishTag();
}
break;
// most cdata states are omitted, because they don't matter to
// highlighting
case nsHtml5Tokenizer::CDATA_RSQB_RSQB:
if (aState == nsHtml5Tokenizer::DATA) {
AddClass(sCdata);
FinishTag();
}
break;
case nsHtml5Tokenizer::CONSUME_CHARACTER_REFERENCE:
EndSpanOrA(); // the span for the ampersand
switch (aState) {
case nsHtml5Tokenizer::CONSUME_NCR:
case nsHtml5Tokenizer::CHARACTER_REFERENCE_HILO_LOOKUP:
break;
default:
// not actually a character reference
EndSpanOrA();
break;
}
break;
case nsHtml5Tokenizer::CHARACTER_REFERENCE_HILO_LOOKUP:
if (aState == nsHtml5Tokenizer::CHARACTER_REFERENCE_TAIL) {
break;
}
// not actually a character reference
EndSpanOrA();
break;
case nsHtml5Tokenizer::CHARACTER_REFERENCE_TAIL:
if (!aReconsume) {
FlushCurrent();
}
EndSpanOrA();
break;
case nsHtml5Tokenizer::DECIMAL_NRC_LOOP:
case nsHtml5Tokenizer::HEX_NCR_LOOP:
switch (aState) {
case nsHtml5Tokenizer::HANDLE_NCR_VALUE:
AddClass(sEntity);
FlushCurrent();
break;
case nsHtml5Tokenizer::HANDLE_NCR_VALUE_RECONSUME:
AddClass(sEntity);
break;
}
EndSpanOrA();
break;
case nsHtml5Tokenizer::CLOSE_TAG_OPEN:
switch (aState) {
case nsHtml5Tokenizer::DATA:
FinishTag();
break;
case nsHtml5Tokenizer::TAG_NAME:
StartSpan(sEndTag);
break;
}
break;
case nsHtml5Tokenizer::RAWTEXT_RCDATA_LESS_THAN_SIGN:
if (aState == nsHtml5Tokenizer::NON_DATA_END_TAG_NAME) {
FlushCurrent();
StartSpan(); // don't know if it is "end-tag" yet :-(
break;
}
EndSpanOrA();
StartCharacters();
break;
case nsHtml5Tokenizer::NON_DATA_END_TAG_NAME:
switch (aState) {
case nsHtml5Tokenizer::BEFORE_ATTRIBUTE_NAME:
AddClass(sEndTag);
EndSpanOrA();
break;
case nsHtml5Tokenizer::SELF_CLOSING_START_TAG:
AddClass(sEndTag);
EndSpanOrA();
StartSpan(); // for highlighting the slash
mSlash = CurrentNode();
break;
case nsHtml5Tokenizer::DATA: // yes, as a result of emitting the token
AddClass(sEndTag);
FinishTag();
break;
default:
FinishTag();
break;
}
break;
case nsHtml5Tokenizer::SCRIPT_DATA_LESS_THAN_SIGN:
case nsHtml5Tokenizer::SCRIPT_DATA_ESCAPED_LESS_THAN_SIGN:
if (aState == nsHtml5Tokenizer::NON_DATA_END_TAG_NAME) {
FlushCurrent();
StartSpan(); // don't know if it is "end-tag" yet :-(
break;
}
FinishTag();
break;
case nsHtml5Tokenizer::SCRIPT_DATA_ESCAPED_DASH_DASH:
case nsHtml5Tokenizer::SCRIPT_DATA_ESCAPED:
case nsHtml5Tokenizer::SCRIPT_DATA_ESCAPED_DASH:
if (aState == nsHtml5Tokenizer::SCRIPT_DATA_ESCAPED_LESS_THAN_SIGN) {
EndCharactersAndStartMarkupRun();
}
break;
// Lots of double escape states omitted, because they don't highlight.
// Likewise, only doctype states that can emit the doctype are of
// interest. Otherwise, the transition out of bogus comment deals.
case nsHtml5Tokenizer::BEFORE_DOCTYPE_NAME:
case nsHtml5Tokenizer::DOCTYPE_NAME:
case nsHtml5Tokenizer::AFTER_DOCTYPE_NAME:
case nsHtml5Tokenizer::AFTER_DOCTYPE_PUBLIC_KEYWORD:
case nsHtml5Tokenizer::BEFORE_DOCTYPE_PUBLIC_IDENTIFIER:
case nsHtml5Tokenizer::DOCTYPE_PUBLIC_IDENTIFIER_DOUBLE_QUOTED:
case nsHtml5Tokenizer::AFTER_DOCTYPE_PUBLIC_IDENTIFIER:
case nsHtml5Tokenizer::BETWEEN_DOCTYPE_PUBLIC_AND_SYSTEM_IDENTIFIERS:
case nsHtml5Tokenizer::DOCTYPE_SYSTEM_IDENTIFIER_DOUBLE_QUOTED:
case nsHtml5Tokenizer::AFTER_DOCTYPE_SYSTEM_IDENTIFIER:
case nsHtml5Tokenizer::BOGUS_DOCTYPE:
case nsHtml5Tokenizer::AFTER_DOCTYPE_SYSTEM_KEYWORD:
case nsHtml5Tokenizer::BEFORE_DOCTYPE_SYSTEM_IDENTIFIER:
case nsHtml5Tokenizer::DOCTYPE_SYSTEM_IDENTIFIER_SINGLE_QUOTED:
case nsHtml5Tokenizer::DOCTYPE_PUBLIC_IDENTIFIER_SINGLE_QUOTED:
if (aState == nsHtml5Tokenizer::DATA) {
AddClass(sDoctype);
FinishTag();
}
break;
case nsHtml5Tokenizer::PROCESSING_INSTRUCTION_QUESTION_MARK:
if (aState == nsHtml5Tokenizer::DATA) {
FinishTag();
}
break;
default:
break;
}
mState = aState;
return aState;
}
[[nodiscard]] bool nsHtml5Highlighter::End() {
switch (mState) {
case nsHtml5Tokenizer::COMMENT_END:
case nsHtml5Tokenizer::COMMENT_END_BANG:
case nsHtml5Tokenizer::COMMENT_START_DASH:
case nsHtml5Tokenizer::BOGUS_COMMENT:
case nsHtml5Tokenizer::BOGUS_COMMENT_HYPHEN:
AddClass(sComment);
break;
case nsHtml5Tokenizer::CDATA_RSQB_RSQB:
AddClass(sCdata);
break;
case nsHtml5Tokenizer::DECIMAL_NRC_LOOP:
case nsHtml5Tokenizer::HEX_NCR_LOOP:
// XXX need tokenizer help here
break;
case nsHtml5Tokenizer::BEFORE_DOCTYPE_NAME:
case nsHtml5Tokenizer::DOCTYPE_NAME:
case nsHtml5Tokenizer::AFTER_DOCTYPE_NAME:
case nsHtml5Tokenizer::AFTER_DOCTYPE_PUBLIC_KEYWORD:
case nsHtml5Tokenizer::BEFORE_DOCTYPE_PUBLIC_IDENTIFIER:
case nsHtml5Tokenizer::DOCTYPE_PUBLIC_IDENTIFIER_DOUBLE_QUOTED:
case nsHtml5Tokenizer::AFTER_DOCTYPE_PUBLIC_IDENTIFIER:
case nsHtml5Tokenizer::BETWEEN_DOCTYPE_PUBLIC_AND_SYSTEM_IDENTIFIERS:
case nsHtml5Tokenizer::DOCTYPE_SYSTEM_IDENTIFIER_DOUBLE_QUOTED:
case nsHtml5Tokenizer::AFTER_DOCTYPE_SYSTEM_IDENTIFIER:
case nsHtml5Tokenizer::BOGUS_DOCTYPE:
case nsHtml5Tokenizer::AFTER_DOCTYPE_SYSTEM_KEYWORD:
case nsHtml5Tokenizer::BEFORE_DOCTYPE_SYSTEM_IDENTIFIER:
case nsHtml5Tokenizer::DOCTYPE_SYSTEM_IDENTIFIER_SINGLE_QUOTED:
case nsHtml5Tokenizer::DOCTYPE_PUBLIC_IDENTIFIER_SINGLE_QUOTED:
AddClass(sDoctype);
break;
default:
break;
}
nsHtml5TreeOperation* treeOp = mOpQueue.AppendElement();
NS_ASSERTION(treeOp, "Tree op allocation failed.");
treeOp->Init(mozilla::AsVariant(opStreamEnded()));
return FlushOps().isOk();
}
void nsHtml5Highlighter::SetBuffer(nsHtml5UTF16Buffer* aBuffer) {
MOZ_ASSERT(!mBuffer, "Old buffer still here!");
mBuffer = aBuffer;
mCStart = aBuffer->getStart();
}
void nsHtml5Highlighter::DropBuffer(int32_t aPos) {
MOZ_ASSERT(mBuffer, "No buffer to drop!");
mPos = aPos;
FlushChars();
mBuffer = nullptr;
}
void nsHtml5Highlighter::StartSpan() {
FlushChars();
Push(nsGkAtoms::span, nullptr, NS_NewHTMLSpanElement);
++mInlinesOpen;
}
void nsHtml5Highlighter::StartSpan(const char16_t* aClass) {
StartSpan();
AddClass(aClass);
}
void nsHtml5Highlighter::EndSpanOrA() {
FlushChars();
Pop();
--mInlinesOpen;
}
void nsHtml5Highlighter::StartCharacters() {
MOZ_ASSERT(!mInCharacters, "Already in characters!");
FlushChars();
Push(nsGkAtoms::span, nullptr, NS_NewHTMLSpanElement);
mCurrentRun = CurrentNode();
mInCharacters = true;
}
void nsHtml5Highlighter::EndCharactersAndStartMarkupRun() {
MOZ_ASSERT(mInCharacters, "Not in characters!");
FlushChars();
Pop();
mInCharacters = false;
// Now start markup run
StartSpan();
mCurrentRun = CurrentNode();
}
void nsHtml5Highlighter::StartA() {
FlushChars();
Push(nsGkAtoms::a, nullptr, NS_NewHTMLAnchorElement);
AddClass(sAttributeValue);
++mInlinesOpen;
}
void nsHtml5Highlighter::FinishTag() {
while (mInlinesOpen > 1) {
EndSpanOrA();
}
FlushCurrent(); // >
EndSpanOrA(); // DATA
NS_ASSERTION(!mInlinesOpen, "mInlinesOpen got out of sync!");
StartCharacters();
}
void nsHtml5Highlighter::FlushChars() {
if (mCStart < mPos) {
char16_t* buf = mBuffer->getBuffer();
int32_t i = mCStart;
while (i < mPos) {
char16_t c = buf[i];
switch (c) {
case '\r':
// The input this code sees has been normalized so that there are
// CR breaks and LF breaks but no CRLF breaks. Overwrite CR with LF
// to show consistent LF line breaks to layout. It is OK to mutate
// the input data, because there are no reparses in the View Source
// case, so we won't need the original data in the buffer anymore.
buf[i] = '\n';
[[fallthrough]];
case '\n': {
++i;
if (mCStart < i) {
int32_t len = i - mCStart;
AppendCharacters(buf, mCStart, len);
mCStart = i;
}
++mLineNumber;
Push(nsGkAtoms::span, nullptr, NS_NewHTMLSpanElement);
nsHtml5TreeOperation* treeOp = mOpQueue.AppendElement();
NS_ASSERTION(treeOp, "Tree op allocation failed.");
opAddLineNumberId operation(CurrentNode(), mLineNumber);
treeOp->Init(mozilla::AsVariant(operation));
Pop();
break;
}
default:
++i;
break;
}
}
if (mCStart < mPos) {
int32_t len = mPos - mCStart;
AppendCharacters(buf, mCStart, len);
mCStart = mPos;
}
}
}
void nsHtml5Highlighter::FlushCurrent() {
mPos++;
FlushChars();
}
bool nsHtml5Highlighter::ShouldFlushOps() {
// Arbitrary threshold that doesn't have an exact justification.
// The general idea is to flush much, much sooner than reaching
// the maximum size of `nsTArray`.
return mOpQueue.Length() > 100000;
}
mozilla::Result<bool, nsresult> nsHtml5Highlighter::FlushOps() {
bool hasOps = !mOpQueue.IsEmpty();
if (hasOps) {
if (!mOpSink->MoveOpsFrom(mOpQueue)) {
return Err(NS_ERROR_OUT_OF_MEMORY);
}
}
return hasOps;
}
void nsHtml5Highlighter::MaybeLinkifyAttributeValue(nsHtml5AttributeName* aName,
nsHtml5String aValue) {
if (!(nsHtml5AttributeName::ATTR_HREF == aName ||
nsHtml5AttributeName::ATTR_SRC == aName ||
nsHtml5AttributeName::ATTR_ACTION == aName ||
nsHtml5AttributeName::ATTR_CITE == aName ||
nsHtml5AttributeName::ATTR_BACKGROUND == aName ||
nsHtml5AttributeName::ATTR_LONGDESC == aName ||
nsHtml5AttributeName::ATTR_XLINK_HREF == aName ||
nsHtml5AttributeName::ATTR_DEFINITIONURL == aName)) {
return;
}
AddViewSourceHref(aValue);
}
void nsHtml5Highlighter::CompletedNamedCharacterReference() {
AddClass(sEntity);
}
nsIContent** nsHtml5Highlighter::AllocateContentHandle() {
if (mHandlesUsed == NS_HTML5_HIGHLIGHTER_HANDLE_ARRAY_LENGTH) {
mOldHandles.AppendElement(std::move(mHandles));
mHandles =
MakeUnique<nsIContent*[]>(NS_HTML5_HIGHLIGHTER_HANDLE_ARRAY_LENGTH);
mHandlesUsed = 0;
}
#ifdef DEBUG
mHandles[mHandlesUsed] = reinterpret_cast<nsIContent*>(uintptr_t(0xC0DEDBAD));
#endif
return &mHandles[mHandlesUsed++];
}
nsIContent** nsHtml5Highlighter::CreateElement(
nsAtom* aName, nsHtml5HtmlAttributes* aAttributes,
nsIContent** aIntendedParent,
mozilla::dom::HTMLContentCreatorFunction aCreator) {
MOZ_ASSERT(aName, "Got null name.");
nsIContent** content = AllocateContentHandle();
opCreateHTMLElement opeation(content, aName, aAttributes, aCreator,
aIntendedParent,
mozilla::dom::FROM_PARSER_NETWORK);
mOpQueue.AppendElement()->Init(mozilla::AsVariant(opeation));
return content;
}
nsIContent** nsHtml5Highlighter::CurrentNode() {
MOZ_ASSERT(mStack.Length() >= 1, "Must have something on stack.");
return mStack[mStack.Length() - 1];
}
void nsHtml5Highlighter::Push(
nsAtom* aName, nsHtml5HtmlAttributes* aAttributes,
mozilla::dom::HTMLContentCreatorFunction aCreator) {
MOZ_ASSERT(mStack.Length() >= 1, "Pushing without root.");
nsIContent** elt = CreateElement(aName, aAttributes, CurrentNode(),
aCreator); // Don't inline below!
opAppend operation(elt, CurrentNode(), mozilla::dom::FROM_PARSER_NETWORK);
mOpQueue.AppendElement()->Init(mozilla::AsVariant(operation));
mStack.AppendElement(elt);
}
void nsHtml5Highlighter::Pop() {
MOZ_ASSERT(mStack.Length() >= 2, "Popping when stack too short.");
mStack.RemoveLastElement();
}
void nsHtml5Highlighter::AppendCharacters(const char16_t* aBuffer,
int32_t aStart, int32_t aLength) {
MOZ_ASSERT(aBuffer, "Null buffer");
char16_t* bufferCopy = new char16_t[aLength];
memcpy(bufferCopy, aBuffer + aStart, aLength * sizeof(char16_t));
opAppendText operation(CurrentNode(), bufferCopy, aLength);
mOpQueue.AppendElement()->Init(mozilla::AsVariant(operation));
}
void nsHtml5Highlighter::AddClass(const char16_t* aClass) {
opAddClass operation(CurrentNode(), (char16_t*)aClass);
mOpQueue.AppendElement()->Init(mozilla::AsVariant(operation));
}
void nsHtml5Highlighter::AddViewSourceHref(nsHtml5String aValue) {
char16_t* bufferCopy = new char16_t[aValue.Length() + 1];
aValue.CopyToBuffer(bufferCopy);
bufferCopy[aValue.Length()] = 0;
opAddViewSourceHref operation(CurrentNode(), bufferCopy, aValue.Length());
mOpQueue.AppendElement()->Init(mozilla::AsVariant(operation));
}
void nsHtml5Highlighter::AddBase(nsHtml5String aValue) {
if (mSeenBase) {
return;
}
mSeenBase = true;
char16_t* bufferCopy = new char16_t[aValue.Length() + 1];
aValue.CopyToBuffer(bufferCopy);
bufferCopy[aValue.Length()] = 0;
opAddViewSourceBase operation(bufferCopy, aValue.Length());
mOpQueue.AppendElement()->Init(mozilla::AsVariant(operation));
}
void nsHtml5Highlighter::AddErrorToCurrentNode(const char* aMsgId) {
nsHtml5TreeOperation* treeOp = mOpQueue.AppendElement();
NS_ASSERTION(treeOp, "Tree op allocation failed.");
opAddErrorType operation(CurrentNode(), (char*)aMsgId);
treeOp->Init(mozilla::AsVariant(operation));
}
void nsHtml5Highlighter::AddErrorToCurrentRun(const char* aMsgId) {
MOZ_ASSERT(mCurrentRun, "Adding error to run without one!");
nsHtml5TreeOperation* treeOp = mOpQueue.AppendElement();
NS_ASSERTION(treeOp, "Tree op allocation failed.");
opAddErrorType operation(mCurrentRun, (char*)aMsgId);
treeOp->Init(mozilla::AsVariant(operation));
}
void nsHtml5Highlighter::AddErrorToCurrentRun(const char* aMsgId,
nsAtom* aName) {
MOZ_ASSERT(mCurrentRun, "Adding error to run without one!");
nsHtml5TreeOperation* treeOp = mOpQueue.AppendElement();
NS_ASSERTION(treeOp, "Tree op allocation failed.");
opAddErrorType operation(mCurrentRun, (char*)aMsgId, aName);
treeOp->Init(mozilla::AsVariant(operation));
}
void nsHtml5Highlighter::AddErrorToCurrentRun(const char* aMsgId, nsAtom* aName,
nsAtom* aOther) {
MOZ_ASSERT(mCurrentRun, "Adding error to run without one!");
nsHtml5TreeOperation* treeOp = mOpQueue.AppendElement();
NS_ASSERTION(treeOp, "Tree op allocation failed.");
opAddErrorType operation(mCurrentRun, (char*)aMsgId, aName, aOther);
treeOp->Init(mozilla::AsVariant(operation));
}
void nsHtml5Highlighter::AddErrorToCurrentAmpersand(const char* aMsgId) {
MOZ_ASSERT(mAmpersand, "Adding error to ampersand without one!");
nsHtml5TreeOperation* treeOp = mOpQueue.AppendElement();
NS_ASSERTION(treeOp, "Tree op allocation failed.");
opAddErrorType operation(mAmpersand, (char*)aMsgId);
treeOp->Init(mozilla::AsVariant(operation));
}
void nsHtml5Highlighter::AddErrorToCurrentSlash(const char* aMsgId) {
MOZ_ASSERT(mSlash, "Adding error to slash without one!");
nsHtml5TreeOperation* treeOp = mOpQueue.AppendElement();
NS_ASSERTION(treeOp, "Tree op allocation failed.");
opAddErrorType operation(mSlash, (char*)aMsgId);
treeOp->Init(mozilla::AsVariant(operation));
}
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