Use nullptr instead of 0 in WebAudio

Source/modules/webaudio/AudioBuffer.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
@@ skipping 28 matching lines @@
 #include "modules/webaudio/AudioContext.h"
 #include "platform/audio/AudioBus.h"
 #include "platform/audio/AudioFileReader.h"
 #include "platform/audio/AudioUtilities.h"
 
 namespace blink {
 
 AudioBuffer* AudioBuffer::create(unsigned numberOfChannels, size_t numberOfFrames, float sampleRate)
 {
     if (!AudioUtilities::isValidAudioBufferSampleRate(sampleRate) || numberOfChannels > AudioContext::maxNumberOfChannels() || !numberOfChannels || !numberOfFrames)
-        return 0;
+        return nullptr;
 
     AudioBuffer* buffer = new AudioBuffer(numberOfChannels, numberOfFrames, sampleRate);
 
     if (!buffer->createdSuccessfully(numberOfChannels))
-        return 0;
+        return nullptr;
     return buffer;
 }
 
 AudioBuffer* AudioBuffer::create(unsigned numberOfChannels, size_t numberOfFrames, float sampleRate, ExceptionState& exceptionState)
 {
     if (!numberOfChannels || numberOfChannels > AudioContext::maxNumberOfChannels()) {
         exceptionState.throwDOMException(
             NotSupportedError,
             ExceptionMessages::indexOutsideRange(
                 "number of channels",
                 numberOfChannels,
                 1u,
                 ExceptionMessages::InclusiveBound,
                 AudioContext::maxNumberOfChannels(),
                 ExceptionMessages::InclusiveBound));
-        return 0;
+        return nullptr;
     }
 
     if (!AudioUtilities::isValidAudioBufferSampleRate(sampleRate)) {
         exceptionState.throwDOMException(
             NotSupportedError,
             ExceptionMessages::indexOutsideRange(
                 "sample rate",
                 sampleRate,
                 AudioUtilities::minAudioBufferSampleRate(),
                 ExceptionMessages::InclusiveBound,
                 AudioUtilities::maxAudioBufferSampleRate(),
                 ExceptionMessages::InclusiveBound));
-        return 0;
+        return nullptr;
     }
 
     if (!numberOfFrames) {
         exceptionState.throwDOMException(
             NotSupportedError,
             ExceptionMessages::indexExceedsMinimumBound(
                 "number of frames",
                 numberOfFrames,
                 static_cast<size_t>(0)));
-        return 0;
+        return nullptr;
     }
 
     AudioBuffer* audioBuffer = create(numberOfChannels, numberOfFrames, sampleRate);
 
     if (!audioBuffer) {
         exceptionState.throwDOMException(
             NotSupportedError,
             "createBuffer("
             + String::number(numberOfChannels) + ", "
             + String::number(numberOfFrames) + ", "
             + String::number(sampleRate)
             + ") failed.");
     }
 
     return audioBuffer;
 }
 
 AudioBuffer* AudioBuffer::createFromAudioFileData(const void* data, size_t dataSize, bool mixToMono, float sampleRate)
 {
     RefPtr<AudioBus> bus = createBusFromInMemoryAudioFile(data, dataSize, mixToMono, sampleRate);
     if (bus.get()) {
         AudioBuffer* buffer = new AudioBuffer(bus.get());
         if (buffer->createdSuccessfully(bus->numberOfChannels()))
             return buffer;
     }
 
-    return 0;
+    return nullptr;
 }
 
 AudioBuffer* AudioBuffer::createFromAudioBus(AudioBus* bus)
 {
     if (!bus)
-        return 0;
+        return nullptr;
     AudioBuffer* buffer = new AudioBuffer(bus);
     if (buffer->createdSuccessfully(bus->numberOfChannels()))
         return buffer;
-    return 0;
+    return nullptr;
 }
 
 bool AudioBuffer::createdSuccessfully(unsigned desiredNumberOfChannels) const
 {
     return numberOfChannels() == desiredNumberOfChannels;
 }
 
 AudioBuffer::AudioBuffer(unsigned numberOfChannels, size_t numberOfFrames, float sampleRate)
     : m_sampleRate(sampleRate)
     , m_length(numberOfFrames)
@@ skipping 40 matching lines @@
         return nullptr;
     }
 
     DOMFloat32Array* channelData = m_channels[channelIndex].get();
     return DOMFloat32Array::create(channelData->buffer(), channelData->byteOffset(), channelData->length());
 }
 
 DOMFloat32Array* AudioBuffer::getChannelData(unsigned channelIndex)
 {
     if (channelIndex >= m_channels.size())
-        return 0;
+        return nullptr;
 
     return m_channels[channelIndex].get();
 }
 
 void AudioBuffer::zero()
 {
     for (unsigned i = 0; i < m_channels.size(); ++i) {
         if (getChannelData(i))
             getChannelData(i)->zeroRange(0, length());
     }
@@ skipping 12 matching lines @@
         for (unsigned i = 0, n = numberOfChannels(); i < n; ++i) {
             getChannelData(i)->buffer()->setDeallocationObserver(DOMArrayBufferDeallocationObserver::instance());
         }
     }
     return wrapper;
 }
 
 } // namespace blink
 
 #endif // ENABLE(WEB_AUDIO)