1/*
2 * Copyright (C) 2012 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#pragma once
27
28#include "ArrayStorage.h"
29#include "IndexingHeader.h"
30#include "Structure.h"
31
32namespace JSC {
33
34inline size_t IndexingHeader::preCapacity(Structure* structure)
35{
36 if (LIKELY(!hasAnyArrayStorage(structure->indexingType())))
37 return 0;
38
39 return arrayStorage()->m_indexBias;
40}
41
42inline size_t IndexingHeader::indexingPayloadSizeInBytes(Structure* structure)
43{
44 switch (structure->indexingType()) {
45 case ALL_UNDECIDED_INDEXING_TYPES:
46 case ALL_INT32_INDEXING_TYPES:
47 case ALL_DOUBLE_INDEXING_TYPES:
48 case ALL_CONTIGUOUS_INDEXING_TYPES:
49 return vectorLength() * sizeof(EncodedJSValue);
50
51 case ALL_ARRAY_STORAGE_INDEXING_TYPES:
52 return ArrayStorage::sizeFor(arrayStorage()->vectorLength());
53
54 default:
55 ASSERT(!hasIndexedProperties(structure->indexingType()));
56 return 0;
57 }
58}
59
60} // namespace JSC
61