1/*
2 * Copyright (C) 2016-2018 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#pragma once
27
28#include "JSString.h"
29
30namespace JSC {
31
32inline JSString::~JSString()
33{
34 if (isRope())
35 return;
36 valueInternal().~String();
37}
38
39bool JSString::equal(ExecState* exec, JSString* other) const
40{
41 if (isRope() || other->isRope())
42 return equalSlowCase(exec, other);
43 return WTF::equal(*valueInternal().impl(), *other->valueInternal().impl());
44}
45
46template<typename StringType>
47inline JSValue jsMakeNontrivialString(ExecState* exec, StringType&& string)
48{
49 return jsNontrivialString(exec, std::forward<StringType>(string));
50}
51
52template<typename StringType, typename... StringTypes>
53inline JSValue jsMakeNontrivialString(ExecState* exec, StringType&& string, StringTypes&&... strings)
54{
55 VM& vm = exec->vm();
56 auto scope = DECLARE_THROW_SCOPE(vm);
57 String result = tryMakeString(std::forward<StringType>(string), std::forward<StringTypes>(strings)...);
58 if (UNLIKELY(!result))
59 return throwOutOfMemoryError(exec, scope);
60 ASSERT(result.length() <= JSString::MaxLength);
61 return jsNontrivialString(exec, WTFMove(result));
62}
63
64template <typename CharacterType>
65inline JSString* repeatCharacter(ExecState& exec, CharacterType character, unsigned repeatCount)
66{
67 VM& vm = exec.vm();
68 auto scope = DECLARE_THROW_SCOPE(vm);
69
70 CharacterType* buffer = nullptr;
71 auto impl = StringImpl::tryCreateUninitialized(repeatCount, buffer);
72 if (!impl) {
73 throwOutOfMemoryError(&exec, scope);
74 return nullptr;
75 }
76
77 std::fill_n(buffer, repeatCount, character);
78
79 RELEASE_AND_RETURN(scope, jsString(&exec, WTFMove(impl)));
80}
81
82} // namespace JSC
83