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| 1 /* | 1 /* |
| 2 * Copyright (C) 2009 Apple Inc. All rights reserved. | 2 * Copyright (C) 2009 Apple 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 * 1. Redistributions of source code must retain the above copyright | 7 * 1. Redistributions of source code must retain the above copyright |
| 8 * notice, this list of conditions and the following disclaimer. | 8 * notice, this list of conditions and the following disclaimer. |
| 9 * 2. Redistributions in binary form must reproduce the above copyright | 9 * 2. Redistributions in binary form must reproduce the above copyright |
| 10 * notice, this list of conditions and the following disclaimer in the | 10 * notice, this list of conditions and the following disclaimer in the |
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| 107 PassRefPtr<ArrayBuffer> ArrayBuffer::create(ArrayBuffer* other) | 107 PassRefPtr<ArrayBuffer> ArrayBuffer::create(ArrayBuffer* other) |
| 108 { | 108 { |
| 109 // TODO(binji): support creating a SharedArrayBuffer by copying another Arra
yBuffer? | 109 // TODO(binji): support creating a SharedArrayBuffer by copying another Arra
yBuffer? |
| 110 ASSERT(!other->isShared()); | 110 ASSERT(!other->isShared()); |
| 111 return ArrayBuffer::create(other->data(), other->byteLength()); | 111 return ArrayBuffer::create(other->data(), other->byteLength()); |
| 112 } | 112 } |
| 113 | 113 |
| 114 PassRefPtr<ArrayBuffer> ArrayBuffer::create(const void* source, unsigned byteLen
gth) | 114 PassRefPtr<ArrayBuffer> ArrayBuffer::create(const void* source, unsigned byteLen
gth) |
| 115 { | 115 { |
| 116 ArrayBufferContents contents(byteLength, 1, ArrayBufferContents::NotShared,
ArrayBufferContents::ZeroInitialize); | 116 ArrayBufferContents contents(byteLength, 1, ArrayBufferContents::NotShared,
ArrayBufferContents::ZeroInitialize); |
| 117 CHECK(contents.data()); | 117 RELEASE_ASSERT(contents.data()); |
| 118 RefPtr<ArrayBuffer> buffer = adoptRef(new ArrayBuffer(contents)); | 118 RefPtr<ArrayBuffer> buffer = adoptRef(new ArrayBuffer(contents)); |
| 119 memcpy(buffer->data(), source, byteLength); | 119 memcpy(buffer->data(), source, byteLength); |
| 120 return buffer.release(); | 120 return buffer.release(); |
| 121 } | 121 } |
| 122 | 122 |
| 123 PassRefPtr<ArrayBuffer> ArrayBuffer::create(ArrayBufferContents& contents) | 123 PassRefPtr<ArrayBuffer> ArrayBuffer::create(ArrayBufferContents& contents) |
| 124 { | 124 { |
| 125 CHECK(contents.data()); | 125 RELEASE_ASSERT(contents.data()); |
| 126 return adoptRef(new ArrayBuffer(contents)); | 126 return adoptRef(new ArrayBuffer(contents)); |
| 127 } | 127 } |
| 128 | 128 |
| 129 PassRefPtr<ArrayBuffer> ArrayBuffer::createOrNull(unsigned numElements, unsigned
elementByteSize) | 129 PassRefPtr<ArrayBuffer> ArrayBuffer::createOrNull(unsigned numElements, unsigned
elementByteSize) |
| 130 { | 130 { |
| 131 return createOrNull(numElements, elementByteSize, ArrayBufferContents::ZeroI
nitialize); | 131 return createOrNull(numElements, elementByteSize, ArrayBufferContents::ZeroI
nitialize); |
| 132 } | 132 } |
| 133 | 133 |
| 134 PassRefPtr<ArrayBuffer> ArrayBuffer::createUninitialized(unsigned numElements, u
nsigned elementByteSize) | 134 PassRefPtr<ArrayBuffer> ArrayBuffer::createUninitialized(unsigned numElements, u
nsigned elementByteSize) |
| 135 { | 135 { |
| 136 return create(numElements, elementByteSize, ArrayBufferContents::DontInitial
ize); | 136 return create(numElements, elementByteSize, ArrayBufferContents::DontInitial
ize); |
| 137 } | 137 } |
| 138 | 138 |
| 139 PassRefPtr<ArrayBuffer> ArrayBuffer::create(unsigned numElements, unsigned eleme
ntByteSize, ArrayBufferContents::InitializationPolicy policy) | 139 PassRefPtr<ArrayBuffer> ArrayBuffer::create(unsigned numElements, unsigned eleme
ntByteSize, ArrayBufferContents::InitializationPolicy policy) |
| 140 { | 140 { |
| 141 ArrayBufferContents contents(numElements, elementByteSize, ArrayBufferConten
ts::NotShared, policy); | 141 ArrayBufferContents contents(numElements, elementByteSize, ArrayBufferConten
ts::NotShared, policy); |
| 142 CHECK(contents.data()); | 142 RELEASE_ASSERT(contents.data()); |
| 143 return adoptRef(new ArrayBuffer(contents)); | 143 return adoptRef(new ArrayBuffer(contents)); |
| 144 } | 144 } |
| 145 | 145 |
| 146 PassRefPtr<ArrayBuffer> ArrayBuffer::createOrNull(unsigned numElements, unsigned
elementByteSize, ArrayBufferContents::InitializationPolicy policy) | 146 PassRefPtr<ArrayBuffer> ArrayBuffer::createOrNull(unsigned numElements, unsigned
elementByteSize, ArrayBufferContents::InitializationPolicy policy) |
| 147 { | 147 { |
| 148 ArrayBufferContents contents(numElements, elementByteSize, ArrayBufferConten
ts::NotShared, policy); | 148 ArrayBufferContents contents(numElements, elementByteSize, ArrayBufferConten
ts::NotShared, policy); |
| 149 if (!contents.data()) | 149 if (!contents.data()) |
| 150 return nullptr; | 150 return nullptr; |
| 151 return adoptRef(new ArrayBuffer(contents)); | 151 return adoptRef(new ArrayBuffer(contents)); |
| 152 } | 152 } |
| 153 | 153 |
| 154 PassRefPtr<ArrayBuffer> ArrayBuffer::createShared(unsigned numElements, unsigned
elementByteSize) | 154 PassRefPtr<ArrayBuffer> ArrayBuffer::createShared(unsigned numElements, unsigned
elementByteSize) |
| 155 { | 155 { |
| 156 return createShared(numElements, elementByteSize, ArrayBufferContents::ZeroI
nitialize); | 156 return createShared(numElements, elementByteSize, ArrayBufferContents::ZeroI
nitialize); |
| 157 } | 157 } |
| 158 | 158 |
| 159 PassRefPtr<ArrayBuffer> ArrayBuffer::createShared(const void* source, unsigned b
yteLength) | 159 PassRefPtr<ArrayBuffer> ArrayBuffer::createShared(const void* source, unsigned b
yteLength) |
| 160 { | 160 { |
| 161 ArrayBufferContents contents(byteLength, 1, ArrayBufferContents::Shared, Arr
ayBufferContents::ZeroInitialize); | 161 ArrayBufferContents contents(byteLength, 1, ArrayBufferContents::Shared, Arr
ayBufferContents::ZeroInitialize); |
| 162 CHECK(contents.data()); | 162 RELEASE_ASSERT(contents.data()); |
| 163 RefPtr<ArrayBuffer> buffer = adoptRef(new ArrayBuffer(contents)); | 163 RefPtr<ArrayBuffer> buffer = adoptRef(new ArrayBuffer(contents)); |
| 164 memcpy(buffer->data(), source, byteLength); | 164 memcpy(buffer->data(), source, byteLength); |
| 165 return buffer.release(); | 165 return buffer.release(); |
| 166 } | 166 } |
| 167 | 167 |
| 168 PassRefPtr<ArrayBuffer> ArrayBuffer::createShared(unsigned numElements, unsigned
elementByteSize, ArrayBufferContents::InitializationPolicy policy) | 168 PassRefPtr<ArrayBuffer> ArrayBuffer::createShared(unsigned numElements, unsigned
elementByteSize, ArrayBufferContents::InitializationPolicy policy) |
| 169 { | 169 { |
| 170 ArrayBufferContents contents(numElements, elementByteSize, ArrayBufferConten
ts::Shared, policy); | 170 ArrayBufferContents contents(numElements, elementByteSize, ArrayBufferConten
ts::Shared, policy); |
| 171 CHECK(contents.data()); | 171 RELEASE_ASSERT(contents.data()); |
| 172 return adoptRef(new ArrayBuffer(contents)); | 172 return adoptRef(new ArrayBuffer(contents)); |
| 173 } | 173 } |
| 174 | 174 |
| 175 ArrayBuffer::ArrayBuffer(ArrayBufferContents& contents) | 175 ArrayBuffer::ArrayBuffer(ArrayBufferContents& contents) |
| 176 : m_firstView(0), m_isNeutered(false) | 176 : m_firstView(0), m_isNeutered(false) |
| 177 { | 177 { |
| 178 if (contents.isShared()) | 178 if (contents.isShared()) |
| 179 contents.shareWith(m_contents); | 179 contents.shareWith(m_contents); |
| 180 else | 180 else |
| 181 contents.transfer(m_contents); | 181 contents.transfer(m_contents); |
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| 218 if (index < 0) | 218 if (index < 0) |
| 219 index = currentLength + index; | 219 index = currentLength + index; |
| 220 return clampValue(index, 0, currentLength); | 220 return clampValue(index, 0, currentLength); |
| 221 } | 221 } |
| 222 | 222 |
| 223 } // namespace WTF | 223 } // namespace WTF |
| 224 | 224 |
| 225 using WTF::ArrayBuffer; | 225 using WTF::ArrayBuffer; |
| 226 | 226 |
| 227 #endif // ArrayBuffer_h | 227 #endif // ArrayBuffer_h |
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