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| 1 /* | 1 /* |
| 2 * Copyright (C) 2010 Google Inc. All rights reserved. | 2 * Copyright (C) 2010 Google Inc. All rights reserved. |
| 3 * | 3 * |
| 4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
| 5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
| 6 * are met: | 6 * are met: |
| 7 * | 7 * |
| 8 * 1. Redistributions of source code must retain the above copyright | 8 * 1. Redistributions of source code must retain the above copyright |
| 9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
| 10 * 2. Redistributions in binary form must reproduce the above copyright | 10 * 2. Redistributions in binary form must reproduce the above copyright |
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| 126 default: | 126 default: |
| 127 ASSERT_NOT_REACHED(); | 127 ASSERT_NOT_REACHED(); |
| 128 break; | 128 break; |
| 129 } | 129 } |
| 130 } | 130 } |
| 131 | 131 |
| 132 template<typename T> | 132 template<typename T> |
| 133 T DataView::getData(unsigned byteOffset, bool littleEndian, ExceptionState& es)
const | 133 T DataView::getData(unsigned byteOffset, bool littleEndian, ExceptionState& es)
const |
| 134 { | 134 { |
| 135 if (beyondRange<T>(byteOffset)) { | 135 if (beyondRange<T>(byteOffset)) { |
| 136 es.throwDOMException(IndexSizeError); | 136 es.throwUninformativeAndGenericDOMException(IndexSizeError); |
| 137 return 0; | 137 return 0; |
| 138 } | 138 } |
| 139 | 139 |
| 140 // We do not want to load the data directly since it would cause a bus error
on architectures that don't support unaligned loads. | 140 // We do not want to load the data directly since it would cause a bus error
on architectures that don't support unaligned loads. |
| 141 Value<T> value; | 141 Value<T> value; |
| 142 memcpy(value.bytes, static_cast<const char*>(m_baseAddress) + byteOffset, si
zeof(T)); | 142 memcpy(value.bytes, static_cast<const char*>(m_baseAddress) + byteOffset, si
zeof(T)); |
| 143 flipBytesIfNeeded(value.bytes, sizeof(T), littleEndian); | 143 flipBytesIfNeeded(value.bytes, sizeof(T), littleEndian); |
| 144 return value.data; | 144 return value.data; |
| 145 } | 145 } |
| 146 | 146 |
| 147 template<typename T> | 147 template<typename T> |
| 148 void DataView::setData(unsigned byteOffset, T value, bool littleEndian, Exceptio
nState& es) | 148 void DataView::setData(unsigned byteOffset, T value, bool littleEndian, Exceptio
nState& es) |
| 149 { | 149 { |
| 150 if (beyondRange<T>(byteOffset)) { | 150 if (beyondRange<T>(byteOffset)) { |
| 151 es.throwDOMException(IndexSizeError); | 151 es.throwUninformativeAndGenericDOMException(IndexSizeError); |
| 152 return; | 152 return; |
| 153 } | 153 } |
| 154 | 154 |
| 155 // We do not want to store the data directly since it would cause a bus erro
r on architectures that don't support unaligned stores. | 155 // We do not want to store the data directly since it would cause a bus erro
r on architectures that don't support unaligned stores. |
| 156 Value<T> tempValue; | 156 Value<T> tempValue; |
| 157 tempValue.data = value; | 157 tempValue.data = value; |
| 158 flipBytesIfNeeded(tempValue.bytes, sizeof(T), littleEndian); | 158 flipBytesIfNeeded(tempValue.bytes, sizeof(T), littleEndian); |
| 159 memcpy(static_cast<char*>(m_baseAddress) + byteOffset, tempValue.bytes, size
of(T)); | 159 memcpy(static_cast<char*>(m_baseAddress) + byteOffset, tempValue.bytes, size
of(T)); |
| 160 } | 160 } |
| 161 | 161 |
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| 239 setData<double>(byteOffset, value, littleEndian, es); | 239 setData<double>(byteOffset, value, littleEndian, es); |
| 240 } | 240 } |
| 241 | 241 |
| 242 void DataView::neuter() | 242 void DataView::neuter() |
| 243 { | 243 { |
| 244 ArrayBufferView::neuter(); | 244 ArrayBufferView::neuter(); |
| 245 m_byteLength = 0; | 245 m_byteLength = 0; |
| 246 } | 246 } |
| 247 | 247 |
| 248 } | 248 } |
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