diff -r 000000000000 -r 6474c204b198 parser/htmlparser/public/nsIExpatSink.idl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/parser/htmlparser/public/nsIExpatSink.idl	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,113 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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 "nsISupports.idl"
+interface nsIScriptError;
+
+/**
+ * This interface should be implemented by any content sink that wants
+ * to get output from expat and do something with it; in other words,
+ * by any sink that handles some sort of XML dialect.
+ */
+
+[scriptable, uuid(f61c56b5-ea5b-42b4-ad3c-17416e72e238)]
+interface nsIExpatSink : nsISupports 
+{
+  /**
+   * Called to handle the opening tag of an element.
+   * @param aName the fully qualified tagname of the element
+   * @param aAtts the array of attribute names and values.  There are
+   *        aAttsCount/2 names and aAttsCount/2 values, so the total number of
+   *        elements in the array is aAttsCount.  The names and values
+   *        alternate.  Thus, if we number attributes starting with 0,
+   *        aAtts[2*k] is the name of the k-th attribute and aAtts[2*k+1] is
+   *        the value of that attribute  Both explicitly specified attributes
+   *        and attributes that are defined to have default values in a DTD are
+   *        present in aAtts.
+   * @param aAttsCount the number of elements in aAtts.
+   * @param aIndex If the element has an attribute of type ID, then
+   *        aAtts[aIndex] is the name of that attribute.  Otherwise, aIndex
+   *        is -1
+   * @param aLineNumber the line number of the start tag in the data stream.
+   */
+  void HandleStartElement(in wstring aName,
+                          [array, size_is(aAttsCount)] in wstring aAtts,
+                          in unsigned long aAttsCount,
+                          in long aIndex,
+                          in unsigned long aLineNumber);
+
+  /**
+   * Called to handle the closing tag of an element.
+   * @param aName the fully qualified tagname of the element
+   */
+  void HandleEndElement(in wstring aName);
+
+  /**
+   * Called to handle a comment
+   * @param aCommentText the text of the comment (not including the
+   *        "<!--" and "-->")
+   */ 
+  void HandleComment(in wstring aCommentText);
+
+  /**
+   * Called to handle a CDATA section
+   * @param aData the text in the CDATA section.  This is null-terminated.
+   * @param aLength the length of the aData string
+   */
+  void HandleCDataSection([size_is(aLength)] in wstring aData, 
+                          in unsigned long aLength);
+
+  /**
+   * Called to handle the doctype declaration
+   */
+  void HandleDoctypeDecl(in AString aSubset,
+                         in AString aName,
+                         in AString aSystemId,
+                         in AString aPublicId,
+                         in nsISupports aCatalogData);
+
+  /**
+   * Called to handle character data.  Note that this does NOT get
+   * called for the contents of CDATA sections.
+   * @param aData the data to handle.  aData is NOT NULL-TERMINATED.
+   * @param aLength the length of the aData string
+   */
+  void HandleCharacterData([size_is(aLength)] in wstring aData, 
+                           in unsigned long aLength);
+
+  /**
+   * Called to handle a processing instruction
+   * @param aTarget the PI target (e.g. xml-stylesheet)
+   * @param aData all the rest of the data in the PI
+   */
+  void HandleProcessingInstruction(in wstring aTarget, 
+                                   in wstring aData);
+
+  /**
+   * Handle the XML Declaration.
+   *
+   * @param aVersion    The version string, can be null if not specified.
+   * @param aEncoding   The encoding string, can be null if not specified.
+   * @param aStandalone -1, 0, or 1 indicating respectively that there was no
+   *                    standalone parameter in the declaration, that it was
+   *                    given as no, or that it was given as yes.
+   */
+  void HandleXMLDeclaration(in wstring aVersion,
+                            in wstring aEncoding,
+                            in long aStandalone);
+
+  /**
+   * Ask the content sink if the expat driver should log an error to the console.
+   *
+   * @param aErrorText  Error message to pass to content sink.
+   * @param aSourceText Source text of the document we're parsing.
+   * @param aError      Script error object with line number & column number
+   *
+   * @retval True if the expat driver should report the error.
+   */
+  boolean ReportError(in wstring aErrorText,
+                      in wstring aSourceText,
+                      in nsIScriptError aError);
+};