Create the Goanna Runtime Environment

1 files changed, 75 insertions, 0 deletions

diff --git a/dom/script/ScriptLoadHandler.h b/dom/script/ScriptLoadHandler.h
new file mode 100644
index 000000000..25219f317
--- /dev/null
+++ b/dom/script/ScriptLoadHandler.h
@@ -0,0 +1,75 @@
+/* -*- Mode: C++; tab-width: 8; 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/. */
+
+/*
+ * A class that handles loading and evaluation of <script> elements.
+ */
+
+#ifndef mozilla_dom_ScriptLoadHandler_h
+#define mozilla_dom_ScriptLoadHandler_h
+
+#include "nsIIncrementalStreamLoader.h"
+#include "nsIUnicodeDecoder.h"
+#include "nsAutoPtr.h"
+#include "mozilla/Vector.h"
+
+namespace mozilla {
+namespace dom {
+
+class ScriptLoadRequest;
+class ScriptLoader;
+class SRICheckDataVerifier;
+
+class ScriptLoadHandler final : public nsIIncrementalStreamLoaderObserver
+{
+public:
+  explicit ScriptLoadHandler(ScriptLoader* aScriptLoader,
+                             ScriptLoadRequest* aRequest,
+                             SRICheckDataVerifier* aSRIDataVerifier);
+
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSIINCREMENTALSTREAMLOADEROBSERVER
+
+private:
+  virtual ~ScriptLoadHandler();
+
+  /*
+   * Try to decode some raw data.
+   */
+  nsresult TryDecodeRawData(const uint8_t* aData, uint32_t aDataLength,
+                            bool aEndOfStream);
+
+  /*
+   * Discover the charset by looking at the stream data, the script
+   * tag, and other indicators.  Returns true if charset has been
+   * discovered.
+   */
+  bool EnsureDecoder(nsIIncrementalStreamLoader *aLoader,
+                     const uint8_t* aData, uint32_t aDataLength,
+                     bool aEndOfStream);
+
+  // ScriptLoader which will handle the parsed script.
+  RefPtr<ScriptLoader>        mScriptLoader;
+
+  // The ScriptLoadRequest for this load.
+  RefPtr<ScriptLoadRequest>   mRequest;
+
+  // SRI data verifier.
+  nsAutoPtr<SRICheckDataVerifier> mSRIDataVerifier;
+
+  // Status of SRI data operations.
+  nsresult                      mSRIStatus;
+
+  // Unicode decoder for charset.
+  nsCOMPtr<nsIUnicodeDecoder>   mDecoder;
+
+  // Accumulated decoded char buffer.
+  mozilla::Vector<char16_t>     mBuffer;
+};
+
+} // namespace dom
+} // namespace mozilla
+
+#endif //mozilla_dom_ScriptLoader_h