| /* |
| * Copyright (C) 2012 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef JSStringJoiner_h |
| #define JSStringJoiner_h |
| |
| #include "JSValue.h" |
| #include <wtf/Vector.h> |
| #include <wtf/text/WTFString.h> |
| |
| namespace JSC { |
| |
| class ExecState; |
| |
| |
| class JSStringJoiner { |
| public: |
| JSStringJoiner(const String& separator, size_t stringCount); |
| |
| void append(const String&); |
| JSValue build(ExecState*); |
| |
| private: |
| String m_separator; |
| Vector<String> m_strings; |
| |
| unsigned m_cumulatedStringsLength; |
| bool m_isValid; |
| bool m_is8Bits; |
| }; |
| |
| inline JSStringJoiner::JSStringJoiner(const String& separator, size_t stringCount) |
| : m_separator(separator) |
| , m_cumulatedStringsLength(0) |
| , m_isValid(true) |
| , m_is8Bits(m_separator.is8Bit()) |
| { |
| ASSERT(!m_separator.isNull()); |
| m_isValid = m_strings.tryReserveCapacity(stringCount); |
| } |
| |
| inline void JSStringJoiner::append(const String& str) |
| { |
| if (!m_isValid) |
| return; |
| |
| m_strings.uncheckedAppend(str); |
| if (!str.isNull()) { |
| m_cumulatedStringsLength += str.length(); |
| m_is8Bits = m_is8Bits && str.is8Bit(); |
| } |
| } |
| |
| } |
| |
| #endif |
