1/*
2 * Copyright (C) 2018 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#include "config.h"
27#include "InstanceOfVariant.h"
28
29#include "JSCInlines.h"
30#include <wtf/ListDump.h>
31
32namespace JSC {
33
34InstanceOfVariant::InstanceOfVariant(
35 const StructureSet& structureSet, const ObjectPropertyConditionSet& conditionSet,
36 JSObject* prototype, bool isHit)
37 : m_structureSet(structureSet)
38 , m_conditionSet(conditionSet)
39 , m_prototype(prototype)
40 , m_isHit(isHit)
41{
42}
43
44bool InstanceOfVariant::attemptToMerge(const InstanceOfVariant& other)
45{
46 if (m_prototype != other.m_prototype)
47 return false;
48
49 if (m_isHit != other.m_isHit)
50 return false;
51
52 ObjectPropertyConditionSet mergedConditionSet = m_conditionSet.mergedWith(other.m_conditionSet);
53 if (!mergedConditionSet.isValid())
54 return false;
55 m_conditionSet = mergedConditionSet;
56
57 m_structureSet.merge(other.m_structureSet);
58
59 return true;
60}
61
62void InstanceOfVariant::dump(PrintStream& out) const
63{
64 dumpInContext(out, nullptr);
65}
66
67void InstanceOfVariant::dumpInContext(PrintStream& out, DumpContext* context) const
68{
69 if (!*this) {
70 out.print("<empty>");
71 return;
72 }
73
74 out.print(
75 "<", inContext(structureSet(), context), ", ", inContext(m_conditionSet, context), ","
76 " prototype = ", inContext(JSValue(m_prototype), context), ","
77 " isHit = ", m_isHit, ">");
78}
79
80} // namespace JSC
81
82