Bug 816410 - Part 1: Convert XMLSerializer and DOMParser to WebIDL bindings. r=bz

content/base/src/nsDOMParser.cpp

@@ -28,10 +28,12 @@
 #include "mozilla/AutoRestore.h"
 
 using namespace mozilla;
+using namespace mozilla::dom;
 
 nsDOMParser::nsDOMParser()
   : mAttemptedInit(false)
 {
+  SetIsDOMBinding();
 }
 
 nsDOMParser::~nsDOMParser()
@@ -41,7 +43,8 @@ nsDOMParser::~nsDOMParser()
 DOMCI_DATA(DOMParser, nsDOMParser)
 
 // QueryInterface implementation for nsDOMParser
-NS_INTERFACE_MAP_BEGIN(nsDOMParser)
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsDOMParser)
+  NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
   NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIDOMParser)
   NS_INTERFACE_MAP_ENTRY(nsIDOMParser)
   NS_INTERFACE_MAP_ENTRY(nsIDOMParserJS)
@@ -50,9 +53,22 @@ NS_INTERFACE_MAP_BEGIN(nsDOMParser)
   NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(DOMParser)
 NS_INTERFACE_MAP_END
 
+NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_1(nsDOMParser, mOwner)
 
-NS_IMPL_ADDREF(nsDOMParser)
-NS_IMPL_RELEASE(nsDOMParser)
+NS_IMPL_CYCLE_COLLECTING_ADDREF(nsDOMParser)
+NS_IMPL_CYCLE_COLLECTING_RELEASE(nsDOMParser)
+
+already_AddRefed<nsIDocument>
+nsDOMParser::ParseFromString(const nsAString& aStr, SupportedType aType,
+                             ErrorResult& rv)
+{
+  nsCOMPtr<nsIDOMDocument> domDocument;
+  rv = nsDOMParser::ParseFromString(PromiseFlatString(aStr).get(),
+                                    SupportedTypeValues::strings[aType].value,
+                                    getter_AddRefs(domDocument));
+  nsCOMPtr<nsIDocument> document(do_QueryInterface(domDocument));
+  return document.forget();
+}
 
 NS_IMETHODIMP 
 nsDOMParser::ParseFromString(const PRUnichar *str, 
@@ -103,6 +119,38 @@ nsDOMParser::ParseFromString(const PRUnichar *str,
   return ParseFromStream(stream, "UTF-8", data.Length(), contentType, aResult);
 }
 
+already_AddRefed<nsIDocument>
+nsDOMParser::ParseFromBuffer(const Sequence<uint8_t>& aBuf, uint32_t aBufLen,
+                             SupportedType aType, ErrorResult& rv)
+{
+  if (aBufLen > aBuf.Length()) {
+    rv.Throw(NS_ERROR_XPC_NOT_ENOUGH_ELEMENTS_IN_ARRAY);
+    return nullptr;
+  }
+  nsCOMPtr<nsIDOMDocument> domDocument;
+  rv = nsDOMParser::ParseFromBuffer(aBuf.Elements(), aBufLen,
+                                    SupportedTypeValues::strings[aType].value,
+                                    getter_AddRefs(domDocument));
+  nsCOMPtr<nsIDocument> document(do_QueryInterface(domDocument));
+  return document.forget();
+}
+
+already_AddRefed<nsIDocument>
+nsDOMParser::ParseFromBuffer(const Uint8Array& aBuf, uint32_t aBufLen,
+                             SupportedType aType, ErrorResult& rv)
+{
+  if (aBufLen > aBuf.Length()) {
+    rv.Throw(NS_ERROR_XPC_NOT_ENOUGH_ELEMENTS_IN_ARRAY);
+    return nullptr;
+  }
+  nsCOMPtr<nsIDOMDocument> domDocument;
+  rv = nsDOMParser::ParseFromBuffer(aBuf.Data(), aBufLen,
+                                    SupportedTypeValues::strings[aType].value,
+                                    getter_AddRefs(domDocument));
+  nsCOMPtr<nsIDocument> document(do_QueryInterface(domDocument));
+  return document.forget();
+}
+
 NS_IMETHODIMP 
 nsDOMParser::ParseFromBuffer(const uint8_t *buf,
                              uint32_t bufLen,
@@ -124,6 +172,23 @@ nsDOMParser::ParseFromBuffer(const uint8_t *buf,
 }
 
 
+already_AddRefed<nsIDocument>
+nsDOMParser::ParseFromStream(nsIInputStream* aStream,
+                             const nsAString& aCharset,
+                             int32_t aContentLength,
+                             SupportedType aType,
+                             ErrorResult& rv)
+{
+  nsCOMPtr<nsIDOMDocument> domDocument;
+  rv = nsDOMParser::ParseFromStream(aStream,
+                                    NS_ConvertUTF16toUTF8(aCharset).get(),
+                                    aContentLength,
+                                    SupportedTypeValues::strings[aType].value,
+                                    getter_AddRefs(domDocument));
+  nsCOMPtr<nsIDocument> document(do_QueryInterface(domDocument));
+  return document.forget();
+}
+
 NS_IMETHODIMP 
 nsDOMParser::ParseFromStream(nsIInputStream *stream, 
                              const char *charset, 
@@ -363,11 +428,27 @@ GetInitArgs(JSContext *cx, uint32_t argc, jsval *argv,
   return NS_OK;
 }
 
+/*static */already_AddRefed<nsDOMParser>
+nsDOMParser::Constructor(nsISupports* aOwner, nsIPrincipal* aPrincipal,
+                         nsIURI* aDocumentURI, nsIURI* aBaseURI,
+                         ErrorResult& rv)
+{
+  if (!nsContentUtils::IsCallerChrome()) {
+    rv.Throw(NS_ERROR_DOM_SECURITY_ERR);
+    return nullptr;
+  }
+  nsRefPtr<nsDOMParser> domParser = new nsDOMParser(aOwner);
+  rv = domParser->InitInternal(aOwner, aPrincipal, aDocumentURI, aBaseURI);
+  if (rv.Failed()) {
+    return nullptr;
+  }
+  return domParser.forget();
+}
+
 NS_IMETHODIMP
 nsDOMParser::Initialize(nsISupports* aOwner, JSContext* cx, JSObject* obj,
                         uint32_t argc, jsval *argv)
 {
-  AttemptedInitMarker marker(&mAttemptedInit);
   nsCOMPtr<nsIPrincipal> prin;
   nsCOMPtr<nsIURI> documentURI;
   nsCOMPtr<nsIURI> baseURI;
@@ -388,8 +469,14 @@ nsDOMParser::Initialize(nsISupports* aOwner, JSContext* cx, JSObject* obj,
     NS_ENSURE_TRUE(prin, NS_ERROR_UNEXPECTED);
   }
 
-  NS_ASSERTION(prin, "Must have principal by now");
-  
+  return InitInternal(aOwner, prin, documentURI, baseURI);
+}
+
+nsresult
+nsDOMParser::InitInternal(nsISupports* aOwner, nsIPrincipal* prin,
+                          nsIURI* documentURI, nsIURI* baseURI)
+{
+  AttemptedInitMarker marker(&mAttemptedInit);
   if (!documentURI) {
     // No explicit documentURI; grab document and base URIs off the window our
     // constructor was called on. Error out if anything untoward happens.

content/base/src/nsDOMParser.h

@@ -3,8 +3,8 @@
  * 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/. */
 
-#ifndef nsDOMParser_h__
-#define nsDOMParser_h__
+#ifndef nsDOMParser_h_
+#define nsDOMParser_h_
 
 #include "nsIDOMParser.h"
 #include "nsCOMPtr.h"
@@ -12,17 +12,26 @@
 #include "nsWeakReference.h"
 #include "nsIJSNativeInitializer.h"
 #include "nsIDocument.h"
+#include "nsWrapperCache.h"
+#include "mozilla/ErrorResult.h"
+#include "mozilla/dom/DOMParserBinding.h"
+#include "mozilla/dom/TypedArray.h"
 
-class nsDOMParser : public nsIDOMParser,
-                    public nsIDOMParserJS,
-                    public nsIJSNativeInitializer,
-                    public nsSupportsWeakReference
+class nsIInputStream;
+
+class nsDOMParser MOZ_FINAL : public nsIDOMParser,
+                              public nsIDOMParserJS,
+                              public nsIJSNativeInitializer,
+                              public nsSupportsWeakReference,
+                              public nsWrapperCache
 {
 public: 
   nsDOMParser();
   virtual ~nsDOMParser();
 
-  NS_DECL_ISUPPORTS
+  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_AMBIGUOUS(nsDOMParser,
+                                                         nsIDOMParser)
 
   // nsIDOMParser
   NS_DECL_NSIDOMPARSER
@@ -34,7 +43,70 @@ public:
   NS_IMETHOD Initialize(nsISupports* aOwner, JSContext* cx, JSObject* obj,
                         uint32_t argc, jsval *argv);
 
+  // WebIDL API
+  static already_AddRefed<nsDOMParser>
+  Constructor(nsISupports* aOwner, mozilla::ErrorResult& rv)
+  {
+    nsRefPtr<nsDOMParser> domParser = new nsDOMParser(aOwner);
+    rv = domParser->Initialize(aOwner, nullptr, nullptr, 0, nullptr);
+    if (rv.Failed()) {
+      return nullptr;
+    }
+    return domParser.forget();
+  }
+
+  static already_AddRefed<nsDOMParser>
+  Constructor(nsISupports* aOwner, nsIPrincipal* aPrincipal,
+              nsIURI* aDocumentURI, nsIURI* aBaseURI,
+              mozilla::ErrorResult& rv);
+
+  already_AddRefed<nsIDocument>
+  ParseFromString(const nsAString& aStr, mozilla::dom::SupportedType aType,
+                  mozilla::ErrorResult& rv);
+
+  already_AddRefed<nsIDocument>
+  ParseFromBuffer(const mozilla::dom::Sequence<uint8_t>& aBuf,
+                  uint32_t aBufLen, mozilla::dom::SupportedType aType,
+                  mozilla::ErrorResult& rv);
+
+  already_AddRefed<nsIDocument>
+  ParseFromBuffer(const mozilla::dom::Uint8Array& aBuf, uint32_t aBufLen,
+                  mozilla::dom::SupportedType aType,
+                  mozilla::ErrorResult& rv);
+
+  already_AddRefed<nsIDocument>
+  ParseFromStream(nsIInputStream* aStream, const nsAString& aCharset,
+                  int32_t aContentLength, mozilla::dom::SupportedType aType,
+                  mozilla::ErrorResult& rv);
+
+  void Init(nsIPrincipal* aPrincipal, nsIURI* aDocumentURI,
+            nsIURI* aBaseURI, mozilla::ErrorResult& rv)
+  {
+    rv = Init(aPrincipal, aDocumentURI, aBaseURI);
+  }
+
+  nsISupports* GetParentObject() const
+  {
+    return mOwner;
+  }
+
+  virtual JSObject* WrapObject(JSContext* aCx, JSObject* aScope,
+                               bool* aTriedToWrap) MOZ_OVERRIDE
+  {
+    return mozilla::dom::DOMParserBinding::Wrap(aCx, aScope, this,
+                                                aTriedToWrap);
+  }
+
 private:
+  nsDOMParser(nsISupports* aOwner) : mOwner(aOwner), mAttemptedInit(false)
+  {
+    MOZ_ASSERT(aOwner);
+    SetIsDOMBinding();
+  }
+
+  nsresult InitInternal(nsISupports* aOwner, nsIPrincipal* prin,
+                        nsIURI* documentURI, nsIURI* baseURI);
+
   nsresult SetUpDocument(DocumentFlavor aFlavor, nsIDOMDocument** aResult);
 
   class AttemptedInitMarker {
@@ -50,7 +122,8 @@ private:
   private:
     bool* mAttemptedInit;
   };
-  
+
+  nsCOMPtr<nsISupports> mOwner;
   nsCOMPtr<nsIPrincipal> mPrincipal;
   nsCOMPtr<nsIPrincipal> mOriginalPrincipal;
   nsCOMPtr<nsIURI> mDocumentURI;

content/base/src/nsDOMSerializer.cpp

@@ -15,6 +15,8 @@
 #include "nsContentUtils.h"
 #include "nsError.h"
 
+using namespace mozilla;
+
 nsDOMSerializer::nsDOMSerializer()
 {
 }
@@ -26,15 +28,17 @@ nsDOMSerializer::~nsDOMSerializer()
 DOMCI_DATA(XMLSerializer, nsDOMSerializer)
 
 // QueryInterface implementation for nsDOMSerializer
-NS_INTERFACE_MAP_BEGIN(nsDOMSerializer)
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsDOMSerializer)
+  NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
   NS_INTERFACE_MAP_ENTRY(nsISupports)
   NS_INTERFACE_MAP_ENTRY(nsIDOMSerializer)
   NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(XMLSerializer)
 NS_INTERFACE_MAP_END
 
+NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_1(nsDOMSerializer, mOwner)
 
-NS_IMPL_ADDREF(nsDOMSerializer)
-NS_IMPL_RELEASE(nsDOMSerializer)
+NS_IMPL_CYCLE_COLLECTING_ADDREF(nsDOMSerializer)
+NS_IMPL_CYCLE_COLLECTING_RELEASE(nsDOMSerializer)
 
 
 static nsresult
@@ -90,6 +94,13 @@ SetUpEncoder(nsIDOMNode *aRoot, const nsACString& aCharset,
   return rv;
 }
 
+void
+nsDOMSerializer::SerializeToString(nsINode& aRoot, nsAString& aStr,
+                                   ErrorResult& rv)
+{
+  rv = nsDOMSerializer::SerializeToString(aRoot.AsDOMNode(), aStr);
+}
+
 NS_IMETHODIMP
 nsDOMSerializer::SerializeToString(nsIDOMNode *aRoot, nsAString& _retval)
 {
@@ -109,6 +120,14 @@ nsDOMSerializer::SerializeToString(nsIDOMNode *aRoot, nsAString& _retval)
   return encoder->EncodeToString(_retval);
 }
 
+void
+nsDOMSerializer::SerializeToStream(nsINode& aRoot, nsIOutputStream* aStream,
+                                   const nsAString& aCharset, ErrorResult& rv)
+{
+  rv = nsDOMSerializer::SerializeToStream(aRoot.AsDOMNode(), aStream,
+                                          NS_ConvertUTF16toUTF8(aCharset));
+}
+
 NS_IMETHODIMP
 nsDOMSerializer::SerializeToStream(nsIDOMNode *aRoot, 
                                    nsIOutputStream *aStream, 

content/base/src/nsDOMSerializer.h

@@ -3,21 +3,66 @@
  * 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/. */
 
-#ifndef nsDOMSerializer_h__
-#define nsDOMSerializer_h__
+#ifndef nsDOMSerializer_h_
+#define nsDOMSerializer_h_
 
 #include "nsIDOMSerializer.h"
+#include "nsWrapperCache.h"
+#include "mozilla/ErrorResult.h"
+#include "mozilla/dom/XMLSerializerBinding.h"
 
-class nsDOMSerializer : public nsIDOMSerializer
+class nsINode;
+class nsIOutputStream;
+
+class nsDOMSerializer MOZ_FINAL : public nsIDOMSerializer,
+                                  public nsWrapperCache
 {
 public:
   nsDOMSerializer();
   virtual ~nsDOMSerializer();
 
-  NS_DECL_ISUPPORTS
+  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(nsDOMSerializer)
 
   // nsIDOMSerializer
   NS_DECL_NSIDOMSERIALIZER
+
+  // WebIDL API
+  static already_AddRefed<nsDOMSerializer>
+  Constructor(nsISupports* aOwner, mozilla::ErrorResult& rv)
+  {
+    nsRefPtr<nsDOMSerializer> domSerializer = new nsDOMSerializer(aOwner);
+    return domSerializer.forget();
+  }
+
+  void
+  SerializeToString(nsINode& aRoot, nsAString& aStr,
+                    mozilla::ErrorResult& rv);
+
+  void
+  SerializeToStream(nsINode& aRoot, nsIOutputStream* aStream,
+                    const nsAString& aCharset, mozilla::ErrorResult& rv);
+
+  nsISupports* GetParentObject() const
+  {
+    return mOwner;
+  }
+
+  virtual JSObject* WrapObject(JSContext* aCx, JSObject* aScope,
+                               bool* aTriedToWrap) MOZ_OVERRIDE
+  {
+    return mozilla::dom::XMLSerializerBinding::Wrap(aCx, aScope, this,
+                                                    aTriedToWrap);
+  }
+
+private:
+  nsDOMSerializer(nsISupports* aOwner) : mOwner(aOwner)
+  {
+    MOZ_ASSERT(aOwner);
+    SetIsDOMBinding();
+  }
+
+  nsCOMPtr<nsISupports> mOwner;
 };
 
 

content/base/test/Makefile.in

@@ -252,6 +252,7 @@ MOCHITEST_FILES_A = \
 		file_XHRDocURI.text \
 		file_XHRDocURI.text^headers^ \
 		test_DOMException.html \
+		test_domparsing.html \
 		test_meta_viewport0.html \
 		test_meta_viewport1.html \
 		test_meta_viewport2.html \

content/base/test/chrome/Makefile.in

@@ -49,6 +49,7 @@ MOCHITEST_CHROME_FILES = \
     test_csp_bug768029.html \
     test_bug800386.xul \
     test_csp_bug773891.html \
+    test_domparsing.xul \
     $(NULL)
 
 include $(topsrcdir)/config/rules.mk

content/base/test/chrome/test_domparsing.xul

@@ -0,0 +1,139 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css" type="text/css"?>
+<window title="Test for the Mozilla extesion of the DOM Parsing and Serialization API"
+  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+  <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"/>
+
+  <!-- test results are displayed in the html:body -->
+  <body xmlns="http://www.w3.org/1999/xhtml">
+  <a href="https://bugzilla.mozilla.org/show_bug.cgi?id=816410"
+     target="_blank">Mozilla Bug 816410</a>
+  </body>
+
+  <!-- test code goes here -->
+  <script type="application/javascript;version=1.7"><![CDATA[
+"use strict";
+/** Test for Bug 816410 **/
+
+const Cc = Components.classes;
+const Ci = Components.interfaces;
+
+function throws(a, type, message) {
+  for (let fn of Array.isArray(a) ? a : [a]) {
+    try {
+      fn();
+      ok(false, message);
+    } catch (e) {
+      if (type) {
+        is(e.name, type, message);
+      } else {
+        ok(true, message);
+      }
+    }
+  }
+}
+
+// DOMParser constructor should not throw for null arguments
+new DOMParser(undefined);
+new DOMParser(null);
+
+throws([
+  function() { new DOMParser(false); },
+  function() { new DOMParser(0); },
+  function() { new DOMParser(""); },
+  function() { new DOMParser({}); },
+], "TypeError", "DOMParser constructor should throw for extra arguments");
+
+{
+  let parser = new DOMParser();
+  throws(function() {
+    parser.init();
+  }, "NS_ERROR_UNEXPECTED", "init method should throw when DOMParser is created by constructor");
+}
+
+// XMLSerializer constructor should not throw for extra arguments
+new XMLSerializer(undefined);
+new XMLSerializer(null);
+new XMLSerializer(false);
+new XMLSerializer(0);
+new XMLSerializer("");
+new XMLSerializer({});
+
+runTest(new DOMParser(), new XMLSerializer());
+
+{
+  let parser = Cc["@mozilla.org/xmlextras/domparser;1"]
+               .createInstance(Ci.nsIDOMParser);
+  parser.init();
+  throws(function() {
+    parser.init();
+  }, "NS_ERROR_UNEXPECTED", "init method should throw when called twice");
+}
+
+runTest(Cc["@mozilla.org/xmlextras/domparser;1"]
+        .createInstance(Ci.nsIDOMParser),
+        Cc["@mozilla.org/xmlextras/xmlserializer;1"]
+        .createInstance(Ci.nsIDOMSerializer));
+
+function runTest(parser, serializer) {
+  is(typeof parser.parseFromString, "function", "parseFromString should exist");
+  is(typeof parser.parseFromBuffer, "function", "parseFromBuffer should exist");
+  is(typeof parser.parseFromStream, "function", "parseFromStream should exist");
+  is(typeof parser.init, "function", "init should exist");
+
+  is(typeof serializer.serializeToString, "function", "serializeToString should exist");
+  is(typeof serializer.serializeToStream, "function", "serializeToStream should exist");
+
+  let tests = [
+    {input: "<html></html>", type: "text/html",
+     expected: '<html xmlns="http://www.w3.org/1999/xhtml"><head></head><body></body></html>'},
+    {input: "<xml></xml>", type: "text/xml", expected: "<xml/>"},
+    {input: "<xml></xml>", type: "application/xml", expected: "<xml/>"},
+    {input: "<html></html>", type: "application/xhtml+xml", expected: "<html/>"},
+    {input: "<svg></svg>", type: "image/svg+xml", expected: "<svg/>"},
+  ];
+  for (let t of tests) {
+    is(serializer.serializeToString(parser.parseFromString(t.input, t.type)), t.expected,
+       "parseFromString test for " + t.type);
+
+    let ostream = {
+      data: "",
+      write: function(buf, count) { this.data += buf; return count; }
+    };
+    serializer.serializeToStream(parser.parseFromString(t.input, t.type), ostream, "UTF-8");
+    is(ostream.data, t.expected, "serializeToStream test for " + t.type);
+
+    if (t.type === "text/html") {
+      // parseFromBuffer and parseFromStream don't support "text/html".
+      continue;
+    }
+
+    let array = Array.map(t.input, function(c) { return c.charCodeAt(c); });
+    let inputs = [
+      {array: array, name: "parseFromBuffer (array)"},
+      {array: new Uint8Array(array), name: "parseFromBuffer (Uint8Array)"},
+    ];
+    for (let input of inputs) {
+      let a = input.array;
+      is(serializer.serializeToString(parser.parseFromBuffer(a, a.length, t.type)), t.expected,
+         input.name + " test for " + t.type);
+      throws(function() {
+          parser.parseFromBuffer(a, a.length + 1, t.type);
+        }, "NS_ERROR_XPC_NOT_ENOUGH_ELEMENTS_IN_ARRAY",
+        input.name + " should throw if bufLen parameter is greater than actual length"
+      );
+    }
+
+    let istream = Cc["@mozilla.org/io/string-input-stream;1"].
+                 createInstance(Ci.nsIStringInputStream);
+    istream.setData(t.input, -1);
+    is(serializer.serializeToString(parser.parseFromStream(istream, null, array.length, t.type)),
+       t.expected, "parseFromStream test for " + t.type);
+  }
+  throws(function() {
+    parser.parseFromString("<xml></xml>", "foo/bar");
+  }, "TypeError", "parseFromString should throw for the unknown type");
+}
+  ]]></script>
+</window>

content/base/test/test_domparsing.html

@@ -0,0 +1,84 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <meta charset=utf-8>
+  <title>Test for the DOM Parsing and Serialization Standard</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=816410">Mozilla Bug 816410</a>
+<p id="display"></p>
+<div id="content" style="display: none">
+  
+</div>
+<pre id="test">
+<script type="application/javascript;version=1.7">
+"use strict";
+/** Test for Bug 816410 **/
+
+function throws(fn, type, message) {
+  try {
+    fn();
+    ok(false, message);
+  } catch (e) {
+    if (type) {
+      is(e.name, type, message);
+    } else {
+      ok(true, message);
+    }
+  }
+}
+
+let parser = new DOMParser();
+is(typeof parser.parseFromString, "function", "parseFromString should exist");
+is(typeof parser.parseFromBuffer, "undefined", "parseFromBuffer should NOT be visible from unprivileged callers");
+is(typeof parser.parseFromStream, "undefined", "parseFromStream should NOT be visible from unprivileged callers");
+is(typeof parser.init, "undefined", "init should NOT be visible from unprivileged callers");
+
+// The three-arguments constructor should not be visible from
+// unprivileged callers for interoperability with other browsers.
+// But we have no way to do that right now.
+try {
+  new DOMParser(undefined);
+  new DOMParser(null);
+  new DOMParser(false);
+  new DOMParser(0);
+  new DOMParser("");
+  new DOMParser({});
+} catch (e) {
+  todo(false, "DOMParser constructor should not throw for extra arguments");
+}
+
+let serializer = new XMLSerializer();
+is(typeof serializer.serializeToString, "function", "serializeToString should exist");
+is(typeof serializer.serializeToStream, "undefined", "serializeToStream should NOT be visible from unprivileged callers");
+
+// XMLSerializer constructor should not throw for extra arguments
+new XMLSerializer(undefined);
+new XMLSerializer(null);
+new XMLSerializer(false);
+new XMLSerializer(0);
+new XMLSerializer("");
+new XMLSerializer({});
+
+let tests = [
+  {input: "<html></html>", type: "text/html",
+   expected: '<html xmlns="http://www.w3.org/1999/xhtml"><head></head><body></body></html>'},
+  {input: "<xml></xml>", type: "text/xml", expected: "<xml/>"},
+  {input: "<xml></xml>", type: "application/xml", expected: "<xml/>"},
+  {input: "<html></html>", type: "application/xhtml+xml", expected: "<html/>"},
+  {input: "<svg></svg>", type: "image/svg+xml", expected: "<svg/>"},
+];
+for (let t of tests) {
+  is(serializer.serializeToString(parser.parseFromString(t.input, t.type)), t.expected,
+     "parseFromString test for " + t.type);
+}
+
+throws(function() {
+  parser.parseFromString("<xml></xml>", "foo/bar");
+}, "TypeError", "parseFromString should throw for the unknown type");
+</script>
+</pre>
+</body>
+</html>

dom/bindings/Bindings.conf

@@ -167,6 +167,10 @@ DOMInterfaces = {
     'skipGen': True
 }],
 
+'DOMParser': {
+    'nativeType': 'nsDOMParser',
+},
+
 'DOMSettableTokenList': {
     'nativeType': 'nsDOMSettableTokenList',
     'binaryNames': {
@@ -535,6 +539,10 @@ DOMInterfaces = {
     'workers': True,
 }],
 
+'XMLSerializer': {
+    'nativeType': 'nsDOMSerializer',
+},
+
 ####################################
 # Test Interfaces of various sorts #
 ####################################
@@ -739,6 +747,8 @@ addExternalIface('HTMLElement')
 addExternalIface('LockedFile')
 addExternalIface('MediaStream')
 addExternalIface('NamedNodeMap')
+addExternalIface('OutputStream', nativeType='nsIOutputStream',
+                 notflattened=True)
 addExternalIface('PaintRequest')
 addExternalIface('Principal', nativeType='nsIPrincipal',
                  headerFile='nsIPrincipal.h', notflattened=True)

dom/webidl/DOMParser.webidl

@@ -0,0 +1,46 @@
+/* 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/.
+ *
+ * The origin of this IDL file is
+ * http://domparsing.spec.whatwg.org/#the-domparser-interface
+ */
+
+interface Principal;
+interface URI;
+interface InputStream;
+
+enum SupportedType {
+  "text/html",
+  "text/xml",
+  "application/xml",
+  "application/xhtml+xml",
+  "image/svg+xml"
+};
+
+// the latter is Mozilla-specific
+[Constructor,
+ Constructor(Principal? prin, optional URI? documentURI = null,
+             optional URI? baseURI = null)]
+interface DOMParser {
+  [Creator, Throws]
+  Document parseFromString(DOMString str, SupportedType type);
+
+  // Mozilla-specific stuff
+  // Throws if the passed-in length is greater than the actual sequence length
+  [Creator, Throws, ChromeOnly]
+  Document parseFromBuffer(sequence<octet> buf, unsigned long bufLen,
+                           SupportedType type);
+  // Throws if the passed-in length is greater than the actual typed array length
+  [Creator, Throws, ChromeOnly]
+  Document parseFromBuffer(Uint8Array buf, unsigned long bufLen,
+                           SupportedType type);
+  [Creator, Throws, ChromeOnly]
+  Document parseFromStream(InputStream stream, DOMString charset,
+                           long contentLength, SupportedType type);
+  [Throws, ChromeOnly]
+  void init(optional Principal? principal = null,
+            optional URI? documentURI = null,
+            optional URI? baseURI = null);
+};
+

dom/webidl/WebIDL.mk

@@ -24,9 +24,10 @@ webidl_files = \
   CSSStyleDeclaration.webidl \
   DelayNode.webidl \
   DOMImplementation.webidl \
-  DOMTokenList.webidl \
+  DOMParser.webidl \
   DOMSettableTokenList.webidl \
   DOMStringMap.webidl \
+  DOMTokenList.webidl \
   DynamicsCompressorNode.webidl \
   Element.webidl \
   EventHandler.webidl \
@@ -61,6 +62,7 @@ webidl_files = \
   XMLHttpRequest.webidl \
   XMLHttpRequestEventTarget.webidl \
   XMLHttpRequestUpload.webidl \
+  XMLSerializer.webidl \
   $(NULL)
 
 ifdef MOZ_WEBGL

dom/webidl/XMLSerializer.webidl

@@ -0,0 +1,20 @@
+/* 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/.
+ *
+ * The origin of this IDL file is
+ * http://domparsing.spec.whatwg.org/#the-xmlserializer-interface
+ */
+
+interface OutputStream;
+
+[Constructor]
+interface XMLSerializer {
+  [Throws]
+  DOMString serializeToString(Node root);
+
+  // Mozilla-specific stuff
+  [Throws, ChromeOnly]
+  void serializeToStream(Node root, OutputStream stream, DOMString charset);
+};
+