/* 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 "mozilla/Likely.h" // INT32_MAX is (2^31)-1. Therefore, the highest power-of-two that fits // is 2^30. Note that this is counting char16_t units. The underlying // bytes will be twice that, but they fit even in 32-bit size_t even // if a contiguous chunk of memory of that size is pretty unlikely to // be available on a 32-bit system. #define MAX_POWER_OF_TWO_IN_INT32 0x40000000 bool nsHtml5Tokenizer::EnsureBufferSpace(int32_t aLength) { MOZ_RELEASE_ASSERT(aLength >= 0, "Negative length."); if (aLength > MAX_POWER_OF_TWO_IN_INT32) { // Can't happen when loading from network. return false; } CheckedInt<int32_t> worstCase(strBufLen); worstCase += aLength; worstCase += charRefBufLen; // Add 2 to account for emissions of LT_GT, LT_SOLIDUS and RSQB_RSQB. // Adding to the general worst case instead of only the // TreeBuilder-exposed worst case to avoid re-introducing a bug when // unifying the tokenizer and tree builder buffers in the future. worstCase += 2; if (!worstCase.isValid()) { return false; } if (worstCase.value() > MAX_POWER_OF_TWO_IN_INT32) { return false; } // TODO: Unify nsHtml5Tokenizer::strBuf and nsHtml5TreeBuilder::charBuffer // so that the call below becomes unnecessary. if (!tokenHandler->EnsureBufferSpace(worstCase.value())) { return false; } if (!strBuf) { if (worstCase.value() < MAX_POWER_OF_TWO_IN_INT32) { // Add one to round to the next power of two to avoid immediate // reallocation once there are a few characters in the buffer. worstCase += 1; } strBuf = jArray<char16_t,int32_t>::newFallibleJArray(mozilla::RoundUpPow2(worstCase.value())); if (!strBuf) { return false; } } else if (worstCase.value() > strBuf.length) { jArray<char16_t,int32_t> newBuf = jArray<char16_t,int32_t>::newFallibleJArray(mozilla::RoundUpPow2(worstCase.value())); if (!newBuf) { return false; } memcpy(newBuf, strBuf, sizeof(char16_t) * size_t(strBufLen)); strBuf = newBuf; } return true; } void nsHtml5Tokenizer::StartPlainText() { stateSave = NS_HTML5TOKENIZER_PLAINTEXT; } void nsHtml5Tokenizer::EnableViewSource(nsHtml5Highlighter* aHighlighter) { mViewSource = aHighlighter; } bool nsHtml5Tokenizer::FlushViewSource() { return mViewSource->FlushOps(); } void nsHtml5Tokenizer::StartViewSource(const nsAutoString& aTitle) { mViewSource->Start(aTitle); } void nsHtml5Tokenizer::EndViewSource() { mViewSource->End(); } void nsHtml5Tokenizer::errWarnLtSlashInRcdata() { } // The null checks below annotated MOZ_LIKELY are not actually necessary. void nsHtml5Tokenizer::errUnquotedAttributeValOrNull(char16_t c) { if (MOZ_LIKELY(mViewSource)) { switch (c) { case '<': mViewSource->AddErrorToCurrentNode("errUnquotedAttributeLt"); return; case '`': mViewSource->AddErrorToCurrentNode("errUnquotedAttributeGrave"); return; case '\'': case '"': mViewSource->AddErrorToCurrentNode("errUnquotedAttributeQuote"); return; case '=': mViewSource->AddErrorToCurrentNode("errUnquotedAttributeEquals"); return; } } } void nsHtml5Tokenizer::errLtOrEqualsOrGraveInUnquotedAttributeOrNull(char16_t c) { if (MOZ_LIKELY(mViewSource)) { switch (c) { case '=': mViewSource->AddErrorToCurrentNode("errUnquotedAttributeStartEquals"); return; case '<': mViewSource->AddErrorToCurrentNode("errUnquotedAttributeStartLt"); return; case '`': mViewSource->AddErrorToCurrentNode("errUnquotedAttributeStartGrave"); return; } } } void nsHtml5Tokenizer::errBadCharBeforeAttributeNameOrNull(char16_t c) { if (MOZ_LIKELY(mViewSource)) { if (c == '<') { mViewSource->AddErrorToCurrentNode("errBadCharBeforeAttributeNameLt"); } else if (c == '=') { errEqualsSignBeforeAttributeName(); } else if (c != 0xFFFD) { errQuoteBeforeAttributeName(c); } } } void nsHtml5Tokenizer::errBadCharAfterLt(char16_t c) { if (MOZ_LIKELY(mViewSource)) { mViewSource->AddErrorToCurrentNode("errBadCharAfterLt"); } } void nsHtml5Tokenizer::errQuoteOrLtInAttributeNameOrNull(char16_t c) { if (MOZ_LIKELY(mViewSource)) { if (c == '<') { mViewSource->AddErrorToCurrentNode("errLtInAttributeName"); } else if (c != 0xFFFD) { mViewSource->AddErrorToCurrentNode("errQuoteInAttributeName"); } } } void nsHtml5Tokenizer::maybeErrAttributesOnEndTag(nsHtml5HtmlAttributes* attrs) { if (mViewSource && attrs->getLength() != 0) { /* * When an end tag token is emitted with attributes, that is a parse * error. */ mViewSource->AddErrorToCurrentRun("maybeErrAttributesOnEndTag"); } } void nsHtml5Tokenizer::maybeErrSlashInEndTag(bool selfClosing) { if (mViewSource && selfClosing && endTag) { mViewSource->AddErrorToCurrentSlash("maybeErrSlashInEndTag"); } } char16_t nsHtml5Tokenizer::errNcrNonCharacter(char16_t ch) { if (MOZ_UNLIKELY(mViewSource)) { mViewSource->AddErrorToCurrentNode("errNcrNonCharacter"); } return ch; } void nsHtml5Tokenizer::errAstralNonCharacter(int32_t ch) { if (MOZ_UNLIKELY(mViewSource)) { mViewSource->AddErrorToCurrentNode("errNcrNonCharacter"); } } char16_t nsHtml5Tokenizer::errNcrControlChar(char16_t ch) { if (MOZ_UNLIKELY(mViewSource)) { mViewSource->AddErrorToCurrentNode("errNcrControlChar"); } return ch; } void nsHtml5Tokenizer::errGarbageAfterLtSlash() { if (MOZ_LIKELY(mViewSource)) { mViewSource->AddErrorToCurrentNode("errGarbageAfterLtSlash"); } } void nsHtml5Tokenizer::errLtSlashGt() { if (MOZ_LIKELY(mViewSource)) { mViewSource->AddErrorToCurrentNode("errLtSlashGt"); } } void nsHtml5Tokenizer::errCharRefLacksSemicolon() { if (MOZ_UNLIKELY(mViewSource)) { mViewSource->AddErrorToCurrentNode("errCharRefLacksSemicolon"); } } void nsHtml5Tokenizer::errNoDigitsInNCR() { if (MOZ_UNLIKELY(mViewSource)) { mViewSource->AddErrorToCurrentNode("errNoDigitsInNCR"); } } void nsHtml5Tokenizer::errGtInSystemId() { if (MOZ_LIKELY(mViewSource)) { mViewSource->AddErrorToCurrentNode("errGtInSystemId"); } } void nsHtml5Tokenizer::errGtInPublicId() { if (MOZ_LIKELY(mViewSource)) { mViewSource->AddErrorToCurrentNode("errGtInPublicId"); } } void nsHtml5Tokenizer::errNamelessDoctype() { if (MOZ_LIKELY(mViewSource)) { mViewSource->AddErrorToCurrentNode("errNamelessDoctype"); } } void nsHtml5Tokenizer::errConsecutiveHyphens() { if (MOZ_UNLIKELY(mViewSource)) { mViewSource->AddErrorToCurrentNode("errConsecutiveHyphens"); } } void nsHtml5Tokenizer::errPrematureEndOfComment() { if (MOZ_LIKELY(mViewSource)) { mViewSource->AddErrorToCurrentNode("errPrematureEndOfComment"); } } void nsHtml5Tokenizer::errBogusComment() { if (MOZ_UNLIKELY(mViewSource)) { mViewSource->AddErrorToCurrentNode("errBogusComment"); } } void nsHtml5Tokenizer::errSlashNotFollowedByGt() { if (MOZ_LIKELY(mViewSource)) { mViewSource->AddErrorToCurrentSlash("errSlashNotFollowedByGt"); } } void nsHtml5Tokenizer::errNoSpaceBetweenAttributes() { if (MOZ_LIKELY(mViewSource)) { mViewSource->AddErrorToCurrentNode("errNoSpaceBetweenAttributes"); } } void nsHtml5Tokenizer::errAttributeValueMissing() { if (MOZ_LIKELY(mViewSource)) { mViewSource->AddErrorToCurrentNode("errAttributeValueMissing"); } } void nsHtml5Tokenizer::errEqualsSignBeforeAttributeName() { if (MOZ_LIKELY(mViewSource)) { mViewSource->AddErrorToCurrentNode("errEqualsSignBeforeAttributeName"); } } void nsHtml5Tokenizer::errLtGt() { if (MOZ_LIKELY(mViewSource)) { mViewSource->AddErrorToCurrentNode("errLtGt"); } } void nsHtml5Tokenizer::errProcessingInstruction() { if (MOZ_LIKELY(mViewSource)) { mViewSource->AddErrorToCurrentNode("errProcessingInstruction"); } } void nsHtml5Tokenizer::errUnescapedAmpersandInterpretedAsCharacterReference() { if (MOZ_UNLIKELY(mViewSource)) { mViewSource->AddErrorToCurrentAmpersand("errUnescapedAmpersandInterpretedAsCharacterReference"); } } void nsHtml5Tokenizer::errNotSemicolonTerminated() { if (MOZ_UNLIKELY(mViewSource)) { mViewSource->AddErrorToCurrentNode("errNotSemicolonTerminated"); } } void nsHtml5Tokenizer::errNoNamedCharacterMatch() { if (MOZ_UNLIKELY(mViewSource)) { mViewSource->AddErrorToCurrentAmpersand("errNoNamedCharacterMatch"); } } void nsHtml5Tokenizer::errQuoteBeforeAttributeName(char16_t c) { if (MOZ_LIKELY(mViewSource)) { mViewSource->AddErrorToCurrentNode("errQuoteBeforeAttributeName"); } } void nsHtml5Tokenizer::errExpectedPublicId() { if (MOZ_LIKELY(mViewSource)) { mViewSource->AddErrorToCurrentNode("errExpectedPublicId"); } } void nsHtml5Tokenizer::errBogusDoctype() { if (MOZ_UNLIKELY(mViewSource)) { mViewSource->AddErrorToCurrentNode("errBogusDoctype"); } } void nsHtml5Tokenizer::errNcrSurrogate() { if (MOZ_UNLIKELY(mViewSource)) { mViewSource->AddErrorToCurrentNode("errNcrSurrogate"); } } void nsHtml5Tokenizer::errNcrCr() { if (MOZ_UNLIKELY(mViewSource)) { mViewSource->AddErrorToCurrentNode("errNcrCr"); } } void nsHtml5Tokenizer::errNcrInC1Range() { if (MOZ_UNLIKELY(mViewSource)) { mViewSource->AddErrorToCurrentNode("errNcrInC1Range"); } } void nsHtml5Tokenizer::errEofInPublicId() { if (MOZ_UNLIKELY(mViewSource)) { mViewSource->AddErrorToCurrentRun("errEofInPublicId"); } } void nsHtml5Tokenizer::errEofInComment() { if (MOZ_UNLIKELY(mViewSource)) { mViewSource->AddErrorToCurrentRun("errEofInComment"); } } void nsHtml5Tokenizer::errEofInDoctype() { if (MOZ_UNLIKELY(mViewSource)) { mViewSource->AddErrorToCurrentRun("errEofInDoctype"); } } void nsHtml5Tokenizer::errEofInAttributeValue() { if (MOZ_UNLIKELY(mViewSource)) { mViewSource->AddErrorToCurrentRun("errEofInAttributeValue"); } } void nsHtml5Tokenizer::errEofInAttributeName() { if (MOZ_UNLIKELY(mViewSource)) { mViewSource->AddErrorToCurrentRun("errEofInAttributeName"); } } void nsHtml5Tokenizer::errEofWithoutGt() { if (MOZ_UNLIKELY(mViewSource)) { mViewSource->AddErrorToCurrentRun("errEofWithoutGt"); } } void nsHtml5Tokenizer::errEofInTagName() { if (MOZ_UNLIKELY(mViewSource)) { mViewSource->AddErrorToCurrentRun("errEofInTagName"); } } void nsHtml5Tokenizer::errEofInEndTag() { if (MOZ_UNLIKELY(mViewSource)) { mViewSource->AddErrorToCurrentRun("errEofInEndTag"); } } void nsHtml5Tokenizer::errEofAfterLt() { if (MOZ_UNLIKELY(mViewSource)) { mViewSource->AddErrorToCurrentRun("errEofAfterLt"); } } void nsHtml5Tokenizer::errNcrOutOfRange() { if (MOZ_UNLIKELY(mViewSource)) { mViewSource->AddErrorToCurrentNode("errNcrOutOfRange"); } } void nsHtml5Tokenizer::errNcrUnassigned() { if (MOZ_UNLIKELY(mViewSource)) { mViewSource->AddErrorToCurrentNode("errNcrUnassigned"); } } void nsHtml5Tokenizer::errDuplicateAttribute() { if (MOZ_UNLIKELY(mViewSource)) { mViewSource->AddErrorToCurrentNode("errDuplicateAttribute"); } } void nsHtml5Tokenizer::errEofInSystemId() { if (MOZ_UNLIKELY(mViewSource)) { mViewSource->AddErrorToCurrentRun("errEofInSystemId"); } } void nsHtml5Tokenizer::errExpectedSystemId() { if (MOZ_LIKELY(mViewSource)) { mViewSource->AddErrorToCurrentNode("errExpectedSystemId"); } } void nsHtml5Tokenizer::errMissingSpaceBeforeDoctypeName() { if (MOZ_LIKELY(mViewSource)) { mViewSource->AddErrorToCurrentNode("errMissingSpaceBeforeDoctypeName"); } } void nsHtml5Tokenizer::errHyphenHyphenBang() { if (MOZ_LIKELY(mViewSource)) { mViewSource->AddErrorToCurrentNode("errHyphenHyphenBang"); } } void nsHtml5Tokenizer::errNcrControlChar() { if (MOZ_UNLIKELY(mViewSource)) { mViewSource->AddErrorToCurrentNode("errNcrControlChar"); } } void nsHtml5Tokenizer::errNcrZero() { if (MOZ_UNLIKELY(mViewSource)) { mViewSource->AddErrorToCurrentNode("errNcrZero"); } } void nsHtml5Tokenizer::errNoSpaceBetweenDoctypeSystemKeywordAndQuote() { if (MOZ_LIKELY(mViewSource)) { mViewSource->AddErrorToCurrentNode("errNoSpaceBetweenDoctypeSystemKeywordAndQuote"); } } void nsHtml5Tokenizer::errNoSpaceBetweenPublicAndSystemIds() { if (MOZ_LIKELY(mViewSource)) { mViewSource->AddErrorToCurrentNode("errNoSpaceBetweenPublicAndSystemIds"); } } void nsHtml5Tokenizer::errNoSpaceBetweenDoctypePublicKeywordAndQuote() { if (MOZ_LIKELY(mViewSource)) { mViewSource->AddErrorToCurrentNode("errNoSpaceBetweenDoctypePublicKeywordAndQuote"); } }