зеркало из https://github.com/mozilla/gecko-dev.git
464 строки
13 KiB
C
464 строки
13 KiB
C
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/CheckedInt.h"
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#include "mozilla/Likely.h"
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// INT32_MAX is (2^31)-1. Therefore, the highest power-of-two that fits
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// is 2^30. Note that this is counting char16_t units. The underlying
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// bytes will be twice that, but they fit even in 32-bit size_t even
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// if a contiguous chunk of memory of that size is pretty unlikely to
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// be available on a 32-bit system.
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#define MAX_POWER_OF_TWO_IN_INT32 0x40000000
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bool nsHtml5Tokenizer::EnsureBufferSpace(int32_t aLength) {
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MOZ_RELEASE_ASSERT(aLength >= 0, "Negative length.");
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if (aLength > MAX_POWER_OF_TWO_IN_INT32) {
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// Can't happen when loading from network.
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return false;
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}
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mozilla::CheckedInt<int32_t> worstCase(strBufLen);
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worstCase += aLength;
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worstCase += charRefBufLen;
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// Add 2 to account for emissions of LT_GT, LT_SOLIDUS and RSQB_RSQB.
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// Adding to the general worst case instead of only the
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// TreeBuilder-exposed worst case to avoid re-introducing a bug when
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// unifying the tokenizer and tree builder buffers in the future.
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worstCase += 2;
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if (!worstCase.isValid()) {
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return false;
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}
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if (worstCase.value() > MAX_POWER_OF_TWO_IN_INT32) {
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return false;
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}
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// TODO: Unify nsHtml5Tokenizer::strBuf and nsHtml5TreeBuilder::charBuffer
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// so that the call below becomes unnecessary.
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if (!tokenHandler->EnsureBufferSpace(worstCase.value())) {
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return false;
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}
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if (!strBuf) {
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if (worstCase.value() < MAX_POWER_OF_TWO_IN_INT32) {
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// Add one to round to the next power of two to avoid immediate
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// reallocation once there are a few characters in the buffer.
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worstCase += 1;
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}
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strBuf = jArray<char16_t, int32_t>::newFallibleJArray(
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mozilla::RoundUpPow2(worstCase.value()));
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if (!strBuf) {
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return false;
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}
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} else if (worstCase.value() > strBuf.length) {
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jArray<char16_t, int32_t> newBuf =
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jArray<char16_t, int32_t>::newFallibleJArray(
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mozilla::RoundUpPow2(worstCase.value()));
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if (!newBuf) {
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return false;
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}
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memcpy(newBuf, strBuf, sizeof(char16_t) * size_t(strBufLen));
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strBuf = newBuf;
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}
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return true;
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}
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void nsHtml5Tokenizer::StartPlainText() {
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stateSave = nsHtml5Tokenizer::PLAINTEXT;
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}
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void nsHtml5Tokenizer::EnableViewSource(nsHtml5Highlighter* aHighlighter) {
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mViewSource = WrapUnique(aHighlighter);
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}
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bool nsHtml5Tokenizer::FlushViewSource() { return mViewSource->FlushOps(); }
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void nsHtml5Tokenizer::StartViewSource(const nsAutoString& aTitle) {
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mViewSource->Start(aTitle);
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}
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void nsHtml5Tokenizer::EndViewSource() { mViewSource->End(); }
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void nsHtml5Tokenizer::errWarnLtSlashInRcdata() {}
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// The null checks below annotated MOZ_LIKELY are not actually necessary.
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void nsHtml5Tokenizer::errUnquotedAttributeValOrNull(char16_t c) {
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if (MOZ_LIKELY(mViewSource)) {
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switch (c) {
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case '<':
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mViewSource->AddErrorToCurrentNode("errUnquotedAttributeLt");
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return;
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case '`':
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mViewSource->AddErrorToCurrentNode("errUnquotedAttributeGrave");
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return;
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case '\'':
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case '"':
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mViewSource->AddErrorToCurrentNode("errUnquotedAttributeQuote");
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return;
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case '=':
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mViewSource->AddErrorToCurrentNode("errUnquotedAttributeEquals");
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return;
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}
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}
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}
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void nsHtml5Tokenizer::errLtOrEqualsOrGraveInUnquotedAttributeOrNull(
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char16_t c) {
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if (MOZ_LIKELY(mViewSource)) {
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switch (c) {
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case '=':
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mViewSource->AddErrorToCurrentNode("errUnquotedAttributeStartEquals");
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return;
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case '<':
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mViewSource->AddErrorToCurrentNode("errUnquotedAttributeStartLt");
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return;
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case '`':
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mViewSource->AddErrorToCurrentNode("errUnquotedAttributeStartGrave");
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return;
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}
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}
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}
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void nsHtml5Tokenizer::errBadCharBeforeAttributeNameOrNull(char16_t c) {
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if (MOZ_LIKELY(mViewSource)) {
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if (c == '<') {
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mViewSource->AddErrorToCurrentNode("errBadCharBeforeAttributeNameLt");
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} else if (c == '=') {
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errEqualsSignBeforeAttributeName();
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} else if (c != 0xFFFD) {
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errQuoteBeforeAttributeName(c);
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}
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}
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}
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void nsHtml5Tokenizer::errBadCharAfterLt(char16_t c) {
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if (MOZ_LIKELY(mViewSource)) {
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mViewSource->AddErrorToCurrentNode("errBadCharAfterLt");
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}
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}
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void nsHtml5Tokenizer::errQuoteOrLtInAttributeNameOrNull(char16_t c) {
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if (MOZ_LIKELY(mViewSource)) {
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if (c == '<') {
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mViewSource->AddErrorToCurrentNode("errLtInAttributeName");
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} else if (c != 0xFFFD) {
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mViewSource->AddErrorToCurrentNode("errQuoteInAttributeName");
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}
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}
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}
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void nsHtml5Tokenizer::maybeErrAttributesOnEndTag(
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nsHtml5HtmlAttributes* attrs) {
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if (mViewSource && attrs->getLength() != 0) {
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/*
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* When an end tag token is emitted with attributes, that is a parse
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* error.
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*/
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mViewSource->AddErrorToCurrentRun("maybeErrAttributesOnEndTag");
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}
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}
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void nsHtml5Tokenizer::maybeErrSlashInEndTag(bool selfClosing) {
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if (mViewSource && selfClosing && endTag) {
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mViewSource->AddErrorToCurrentSlash("maybeErrSlashInEndTag");
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}
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}
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char16_t nsHtml5Tokenizer::errNcrNonCharacter(char16_t ch) {
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if (MOZ_UNLIKELY(mViewSource)) {
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mViewSource->AddErrorToCurrentNode("errNcrNonCharacter");
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}
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return ch;
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}
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void nsHtml5Tokenizer::errAstralNonCharacter(int32_t ch) {
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if (MOZ_UNLIKELY(mViewSource)) {
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mViewSource->AddErrorToCurrentNode("errNcrNonCharacter");
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}
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}
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char16_t nsHtml5Tokenizer::errNcrControlChar(char16_t ch) {
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if (MOZ_UNLIKELY(mViewSource)) {
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mViewSource->AddErrorToCurrentNode("errNcrControlChar");
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}
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return ch;
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}
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void nsHtml5Tokenizer::errGarbageAfterLtSlash() {
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if (MOZ_LIKELY(mViewSource)) {
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mViewSource->AddErrorToCurrentNode("errGarbageAfterLtSlash");
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}
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}
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void nsHtml5Tokenizer::errLtSlashGt() {
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if (MOZ_LIKELY(mViewSource)) {
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mViewSource->AddErrorToCurrentNode("errLtSlashGt");
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}
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}
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void nsHtml5Tokenizer::errCharRefLacksSemicolon() {
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if (MOZ_UNLIKELY(mViewSource)) {
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mViewSource->AddErrorToCurrentNode("errCharRefLacksSemicolon");
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}
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}
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void nsHtml5Tokenizer::errNoDigitsInNCR() {
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if (MOZ_UNLIKELY(mViewSource)) {
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mViewSource->AddErrorToCurrentNode("errNoDigitsInNCR");
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}
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}
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void nsHtml5Tokenizer::errGtInSystemId() {
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if (MOZ_LIKELY(mViewSource)) {
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mViewSource->AddErrorToCurrentNode("errGtInSystemId");
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}
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}
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void nsHtml5Tokenizer::errGtInPublicId() {
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if (MOZ_LIKELY(mViewSource)) {
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mViewSource->AddErrorToCurrentNode("errGtInPublicId");
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}
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}
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void nsHtml5Tokenizer::errNamelessDoctype() {
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if (MOZ_LIKELY(mViewSource)) {
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mViewSource->AddErrorToCurrentNode("errNamelessDoctype");
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}
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}
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void nsHtml5Tokenizer::errConsecutiveHyphens() {
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if (MOZ_UNLIKELY(mViewSource)) {
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mViewSource->AddErrorToCurrentNode("errConsecutiveHyphens");
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}
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}
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void nsHtml5Tokenizer::errPrematureEndOfComment() {
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if (MOZ_LIKELY(mViewSource)) {
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mViewSource->AddErrorToCurrentNode("errPrematureEndOfComment");
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}
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}
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void nsHtml5Tokenizer::errBogusComment() {
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if (MOZ_UNLIKELY(mViewSource)) {
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mViewSource->AddErrorToCurrentNode("errBogusComment");
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}
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}
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void nsHtml5Tokenizer::errSlashNotFollowedByGt() {
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if (MOZ_LIKELY(mViewSource)) {
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mViewSource->AddErrorToCurrentSlash("errSlashNotFollowedByGt");
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}
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}
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void nsHtml5Tokenizer::errNoSpaceBetweenAttributes() {
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if (MOZ_LIKELY(mViewSource)) {
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mViewSource->AddErrorToCurrentNode("errNoSpaceBetweenAttributes");
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}
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}
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void nsHtml5Tokenizer::errAttributeValueMissing() {
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if (MOZ_LIKELY(mViewSource)) {
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mViewSource->AddErrorToCurrentNode("errAttributeValueMissing");
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}
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}
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void nsHtml5Tokenizer::errEqualsSignBeforeAttributeName() {
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if (MOZ_LIKELY(mViewSource)) {
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mViewSource->AddErrorToCurrentNode("errEqualsSignBeforeAttributeName");
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}
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}
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void nsHtml5Tokenizer::errLtGt() {
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if (MOZ_LIKELY(mViewSource)) {
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mViewSource->AddErrorToCurrentNode("errLtGt");
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}
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}
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void nsHtml5Tokenizer::errProcessingInstruction() {
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if (MOZ_LIKELY(mViewSource)) {
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mViewSource->AddErrorToCurrentNode("errProcessingInstruction");
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}
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}
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void nsHtml5Tokenizer::errUnescapedAmpersandInterpretedAsCharacterReference() {
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if (MOZ_UNLIKELY(mViewSource)) {
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mViewSource->AddErrorToCurrentAmpersand(
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"errUnescapedAmpersandInterpretedAsCharacterReference");
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}
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}
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void nsHtml5Tokenizer::errNotSemicolonTerminated() {
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if (MOZ_UNLIKELY(mViewSource)) {
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mViewSource->AddErrorToCurrentNode("errNotSemicolonTerminated");
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}
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}
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void nsHtml5Tokenizer::errNoNamedCharacterMatch() {
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if (MOZ_UNLIKELY(mViewSource)) {
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mViewSource->AddErrorToCurrentAmpersand("errNoNamedCharacterMatch");
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}
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}
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void nsHtml5Tokenizer::errQuoteBeforeAttributeName(char16_t c) {
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if (MOZ_LIKELY(mViewSource)) {
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mViewSource->AddErrorToCurrentNode("errQuoteBeforeAttributeName");
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}
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}
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void nsHtml5Tokenizer::errExpectedPublicId() {
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if (MOZ_LIKELY(mViewSource)) {
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mViewSource->AddErrorToCurrentNode("errExpectedPublicId");
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}
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}
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void nsHtml5Tokenizer::errBogusDoctype() {
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if (MOZ_UNLIKELY(mViewSource)) {
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mViewSource->AddErrorToCurrentNode("errBogusDoctype");
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}
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}
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void nsHtml5Tokenizer::errNcrSurrogate() {
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if (MOZ_UNLIKELY(mViewSource)) {
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mViewSource->AddErrorToCurrentNode("errNcrSurrogate");
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}
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}
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void nsHtml5Tokenizer::errNcrCr() {
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if (MOZ_UNLIKELY(mViewSource)) {
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mViewSource->AddErrorToCurrentNode("errNcrCr");
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}
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}
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void nsHtml5Tokenizer::errNcrInC1Range() {
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if (MOZ_UNLIKELY(mViewSource)) {
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mViewSource->AddErrorToCurrentNode("errNcrInC1Range");
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}
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}
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void nsHtml5Tokenizer::errEofInPublicId() {
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if (MOZ_UNLIKELY(mViewSource)) {
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mViewSource->AddErrorToCurrentRun("errEofInPublicId");
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}
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}
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void nsHtml5Tokenizer::errEofInComment() {
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if (MOZ_UNLIKELY(mViewSource)) {
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mViewSource->AddErrorToCurrentRun("errEofInComment");
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}
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}
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void nsHtml5Tokenizer::errEofInDoctype() {
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if (MOZ_UNLIKELY(mViewSource)) {
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mViewSource->AddErrorToCurrentRun("errEofInDoctype");
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}
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}
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void nsHtml5Tokenizer::errEofInAttributeValue() {
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if (MOZ_UNLIKELY(mViewSource)) {
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mViewSource->AddErrorToCurrentRun("errEofInAttributeValue");
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}
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}
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void nsHtml5Tokenizer::errEofInAttributeName() {
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if (MOZ_UNLIKELY(mViewSource)) {
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mViewSource->AddErrorToCurrentRun("errEofInAttributeName");
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}
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}
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void nsHtml5Tokenizer::errEofWithoutGt() {
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if (MOZ_UNLIKELY(mViewSource)) {
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mViewSource->AddErrorToCurrentRun("errEofWithoutGt");
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}
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}
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void nsHtml5Tokenizer::errEofInTagName() {
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if (MOZ_UNLIKELY(mViewSource)) {
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mViewSource->AddErrorToCurrentRun("errEofInTagName");
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}
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}
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void nsHtml5Tokenizer::errEofInEndTag() {
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if (MOZ_UNLIKELY(mViewSource)) {
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mViewSource->AddErrorToCurrentRun("errEofInEndTag");
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}
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}
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void nsHtml5Tokenizer::errEofAfterLt() {
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if (MOZ_UNLIKELY(mViewSource)) {
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mViewSource->AddErrorToCurrentRun("errEofAfterLt");
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}
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}
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void nsHtml5Tokenizer::errNcrOutOfRange() {
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if (MOZ_UNLIKELY(mViewSource)) {
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mViewSource->AddErrorToCurrentNode("errNcrOutOfRange");
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}
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}
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void nsHtml5Tokenizer::errNcrUnassigned() {
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if (MOZ_UNLIKELY(mViewSource)) {
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mViewSource->AddErrorToCurrentNode("errNcrUnassigned");
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}
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}
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void nsHtml5Tokenizer::errDuplicateAttribute() {
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if (MOZ_UNLIKELY(mViewSource)) {
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mViewSource->AddErrorToCurrentNode("errDuplicateAttribute");
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}
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}
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void nsHtml5Tokenizer::errEofInSystemId() {
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if (MOZ_UNLIKELY(mViewSource)) {
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mViewSource->AddErrorToCurrentRun("errEofInSystemId");
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}
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}
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void nsHtml5Tokenizer::errExpectedSystemId() {
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if (MOZ_LIKELY(mViewSource)) {
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mViewSource->AddErrorToCurrentNode("errExpectedSystemId");
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}
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}
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void nsHtml5Tokenizer::errMissingSpaceBeforeDoctypeName() {
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if (MOZ_LIKELY(mViewSource)) {
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mViewSource->AddErrorToCurrentNode("errMissingSpaceBeforeDoctypeName");
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}
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}
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void nsHtml5Tokenizer::errNestedComment() {
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if (MOZ_LIKELY(mViewSource)) {
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mViewSource->AddErrorToCurrentNode("errNestedComment");
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}
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}
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void nsHtml5Tokenizer::errNcrControlChar() {
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if (MOZ_UNLIKELY(mViewSource)) {
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mViewSource->AddErrorToCurrentNode("errNcrControlChar");
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}
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}
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void nsHtml5Tokenizer::errNcrZero() {
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if (MOZ_UNLIKELY(mViewSource)) {
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mViewSource->AddErrorToCurrentNode("errNcrZero");
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}
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}
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void nsHtml5Tokenizer::errNoSpaceBetweenDoctypeSystemKeywordAndQuote() {
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if (MOZ_LIKELY(mViewSource)) {
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mViewSource->AddErrorToCurrentNode(
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"errNoSpaceBetweenDoctypeSystemKeywordAndQuote");
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}
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}
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void nsHtml5Tokenizer::errNoSpaceBetweenPublicAndSystemIds() {
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if (MOZ_LIKELY(mViewSource)) {
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mViewSource->AddErrorToCurrentNode("errNoSpaceBetweenPublicAndSystemIds");
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}
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}
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void nsHtml5Tokenizer::errNoSpaceBetweenDoctypePublicKeywordAndQuote() {
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if (MOZ_LIKELY(mViewSource)) {
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mViewSource->AddErrorToCurrentNode(
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"errNoSpaceBetweenDoctypePublicKeywordAndQuote");
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}
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}
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