1/*
2 * Copyright (C) 2019 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 "RegExpGlobalData.h"
28
29#include "JSCInlines.h"
30#include "JSString.h"
31
32namespace JSC {
33
34void RegExpGlobalData::visitAggregate(SlotVisitor& visitor)
35{
36 m_cachedResult.visitAggregate(visitor);
37}
38
39JSValue RegExpGlobalData::getBackref(ExecState* exec, JSGlobalObject* owner, unsigned i)
40{
41 VM& vm = exec->vm();
42 auto scope = DECLARE_THROW_SCOPE(vm);
43
44 JSArray* array = m_cachedResult.lastResult(exec, owner);
45 RETURN_IF_EXCEPTION(scope, { });
46
47 if (i < array->length()) {
48 JSValue result = JSValue(array).get(exec, i);
49 RETURN_IF_EXCEPTION(scope, { });
50 ASSERT(result.isString() || result.isUndefined());
51 if (!result.isUndefined())
52 return result;
53 }
54 return jsEmptyString(&vm);
55}
56
57JSValue RegExpGlobalData::getLastParen(ExecState* exec, JSGlobalObject* owner)
58{
59 VM& vm = exec->vm();
60 auto scope = DECLARE_THROW_SCOPE(vm);
61
62 JSArray* array = m_cachedResult.lastResult(exec, owner);
63 RETURN_IF_EXCEPTION(scope, { });
64
65 unsigned length = array->length();
66 if (length > 1) {
67 JSValue result = JSValue(array).get(exec, length - 1);
68 RETURN_IF_EXCEPTION(scope, { });
69 ASSERT(result.isString() || result.isUndefined());
70 if (!result.isUndefined())
71 return result;
72 }
73 return jsEmptyString(&vm);
74}
75
76JSValue RegExpGlobalData::getLeftContext(ExecState* exec, JSGlobalObject* owner)
77{
78 return m_cachedResult.leftContext(exec, owner);
79}
80
81JSValue RegExpGlobalData::getRightContext(ExecState* exec, JSGlobalObject* owner)
82{
83 return m_cachedResult.rightContext(exec, owner);
84}
85
86} // namespace JSC
87