Move the exception logic to the AudioNode creator

third_party/WebKit/Source/modules/webaudio/AnalyserNode.cpp

 /*
  * Copyright (C) 2010, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1.  Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 95 matching lines @@
         m_analyser.setSmoothingTimeConstant(k);
     } else {
         exceptionState.throwDOMException(
             IndexSizeError,
             ExceptionMessages::indexOutsideRange("smoothing value", k, 0.0, ExceptionMessages::InclusiveBound, 1.0, ExceptionMessages::InclusiveBound));
     }
 }
 
 // ----------------------------------------------------------------
 
-AnalyserNode::AnalyserNode(AbstractAudioContext& context, float sampleRate)
+AnalyserNode::AnalyserNode(AbstractAudioContext& context)
     : AudioBasicInspectorNode(context)
 {
-    setHandler(AnalyserHandler::create(*this, sampleRate));
+    setHandler(AnalyserHandler::create(*this, context.sampleRate()));
 }
 
-AnalyserNode* AnalyserNode::create(AbstractAudioContext& context, float sampleRate)
+AnalyserNode* AnalyserNode::create(AbstractAudioContext& context, ExceptionState& exceptionState)
 {
-    return new AnalyserNode(context, sampleRate);
+    DCHECK(isMainThread());
+
+    if (context.isContextClosed()) {
+        context.throwExceptionForClosedState(exceptionState);
+        return nullptr;
+    }
+
+    return new AnalyserNode(context);
 }
 
 AnalyserHandler& AnalyserNode::analyserHandler() const
 {
     return static_cast<AnalyserHandler&>(handler());
 }
 
 unsigned AnalyserNode::fftSize() const
 {
     return analyserHandler().fftSize();
@@ skipping 54 matching lines @@
     analyserHandler().getFloatTimeDomainData(array);
 }
 
 void AnalyserNode::getByteTimeDomainData(DOMUint8Array* array)
 {
     analyserHandler().getByteTimeDomainData(array);
 }
 
 } // namespace blink