1 files changed, 220 insertions, 0 deletions
diff --git a/parser/html/nsHtml5TokenizerHSupplement.h b/parser/html/nsHtml5TokenizerHSupplement.h
new file mode 100644
index 0000000000..0e1930b93e
--- /dev/null
+++ b/parser/html/nsHtml5TokenizerHSupplement.h
@@ -0,0 +1,220 @@
+/* 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/. */
+
+private:
+inline void silentCarriageReturn() {
+  nextCharOnNewLine = true;
+  lastCR = true;
+}
+
+inline void silentLineFeed() { nextCharOnNewLine = true; }
+
+inline char16_t checkChar(char16_t* buf, int32_t pos) {
+  // The name of this method comes from the validator.
+  // We aren't checking a char here. We read the next
+  // UTF-16 code unit and, before returning it, adjust
+  // the line and column numbers.
+  char16_t c = buf[pos];
+  if (MOZ_UNLIKELY(nextCharOnNewLine)) {
+    // By changing the line and column here instead
+    // of doing so eagerly when seeing the line break
+    // causes the line break itself to be considered
+    // column-wise at the end of a line.
+    line++;
+    col = 1;
+    nextCharOnNewLine = false;
+  } else if (MOZ_LIKELY(!NS_IS_LOW_SURROGATE(c))) {
+    // SpiderMonkey wants to count scalar values
+    // instead of UTF-16 code units. We omit low
+    // surrogates from the count so that only the
+    // high surrogate increments the count for
+    // two-code-unit scalar values.
+    //
+    // It's somewhat questionable from the performance
+    // perspective to make the human-perceivable column
+    // count correct for non-BMP characters in the case
+    // where there is a single scalar value per extended
+    // grapheme cluster when even on the BMP there are
+    // various cases where the scalar count doesn't make
+    // much sense as a human-perceived "column count" due
+    // to extended grapheme clusters consisting of more
+    // than one scalar value.
+    col++;
+  }
+  return c;
+}
+
+int32_t col;
+bool nextCharOnNewLine;
+
+public:
+inline int32_t getColumnNumber() { return col; }
+
+inline void setColumnNumberAndResetNextLine(int32_t aCol) {
+  col = aCol;
+  // The restored position only ever points to the position of
+  // script tag's > character, so we can unconditionally use
+  // `false` below.
+  nextCharOnNewLine = false;
+}
+
+inline nsHtml5HtmlAttributes* GetAttributes() { return attributes; }
+
+/**
+ * Makes sure the buffers are large enough to be able to tokenize aLength
+ * UTF-16 code units before having to make the buffers larger.
+ *
+ * @param aLength the number of UTF-16 code units to be tokenized before the
+ *                next call to this method.
+ * @return true if successful; false if out of memory
+ */
+bool EnsureBufferSpace(int32_t aLength);
+
+bool TemplatePushedOrHeadPopped();
+
+void RememberGt(int32_t aPos);
+
+void AtKilobyteBoundary() { suspendAfterCurrentTokenIfNotInText(); }
+
+bool IsInTokenStartedAtKilobyteBoundary() {
+  return suspensionAfterCurrentNonTextTokenPending();
+}
+
+mozilla::UniquePtr<nsHtml5Highlighter> mViewSource;
+
+/**
+ * Starts handling text/plain. This is a one-way initialization. There is
+ * no corresponding EndPlainText() call.
+ */
+void StartPlainText();
+
+void EnableViewSource(nsHtml5Highlighter* aHighlighter);
+
+bool ShouldFlushViewSource();
+
+mozilla::Result<bool, nsresult> FlushViewSource();
+
+void StartViewSource(const nsAutoString& aTitle);
+
+void StartViewSourceCharacters();
+
+[[nodiscard]] bool EndViewSource();
+
+void RewindViewSource();
+
+void SetViewSourceOpSink(nsAHtml5TreeOpSink* aOpSink);
+
+void errGarbageAfterLtSlash();
+
+void errLtSlashGt();
+
+void errWarnLtSlashInRcdata();
+
+void errCharRefLacksSemicolon();
+
+void errNoDigitsInNCR();
+
+void errGtInSystemId();
+
+void errGtInPublicId();
+
+void errNamelessDoctype();
+
+void errConsecutiveHyphens();
+
+void errPrematureEndOfComment();
+
+void errBogusComment();
+
+void errUnquotedAttributeValOrNull(char16_t c);
+
+void errSlashNotFollowedByGt();
+
+void errNoSpaceBetweenAttributes();
+
+void errLtOrEqualsOrGraveInUnquotedAttributeOrNull(char16_t c);
+
+void errAttributeValueMissing();
+
+void errBadCharBeforeAttributeNameOrNull(char16_t c);
+
+void errEqualsSignBeforeAttributeName();
+
+void errBadCharAfterLt(char16_t c);
+
+void errLtGt();
+
+void errProcessingInstruction();
+
+void errUnescapedAmpersandInterpretedAsCharacterReference();
+
+void errNotSemicolonTerminated();
+
+void errNoNamedCharacterMatch();
+
+void errQuoteBeforeAttributeName(char16_t c);
+
+void errQuoteOrLtInAttributeNameOrNull(char16_t c);
+
+void errExpectedPublicId();
+
+void errBogusDoctype();
+
+void maybeErrAttributesOnEndTag(nsHtml5HtmlAttributes* attrs);
+
+void maybeErrSlashInEndTag(bool selfClosing);
+
+char16_t errNcrNonCharacter(char16_t ch);
+
+void errAstralNonCharacter(int32_t ch);
+
+void errNcrSurrogate();
+
+char16_t errNcrControlChar(char16_t ch);
+
+void errNcrCr();
+
+void errNcrInC1Range();
+
+void errEofInPublicId();
+
+void errEofInComment();
+
+void errEofInDoctype();
+
+void errEofInAttributeValue();
+
+void errEofInAttributeName();
+
+void errEofWithoutGt();
+
+void errEofInTagName();
+
+void errEofInEndTag();
+
+void errEofAfterLt();
+
+void errNcrOutOfRange();
+
+void errNcrUnassigned();
+
+void errDuplicateAttribute();
+
+void errEofInSystemId();
+
+void errExpectedSystemId();
+
+void errMissingSpaceBeforeDoctypeName();
+
+void errNestedComment();
+
+void errNcrControlChar();
+
+void errNcrZero();
+
+void errNoSpaceBetweenDoctypeSystemKeywordAndQuote();
+
+void errNoSpaceBetweenPublicAndSystemIds();
+
+void errNoSpaceBetweenDoctypePublicKeywordAndQuote();