1 /* 2 * Copyright (C) 2009 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 #ifndef StringBuilder_h 27 #define StringBuilder_h 28 29 #include <wtf/Vector.h> 30 31 namespace JSC { 32 33 class StringBuilder { 34 public: append(const UChar u)35 void append(const UChar u) 36 { 37 buffer.append(u); 38 } 39 append(const char * str)40 void append(const char* str) 41 { 42 append(str, strlen(str)); 43 } 44 append(const char * str,size_t len)45 void append(const char* str, size_t len) 46 { 47 buffer.reserveCapacity(buffer.size() + len); 48 for (size_t i = 0; i < len; i++) 49 buffer.append(static_cast<unsigned char>(str[i])); 50 } 51 append(const UChar * str,size_t len)52 void append(const UChar* str, size_t len) 53 { 54 buffer.append(str, len); 55 } 56 append(const UString & str)57 void append(const UString& str) 58 { 59 buffer.append(str.data(), str.size()); 60 } 61 isEmpty()62 bool isEmpty() { return buffer.isEmpty(); } reserveCapacity(size_t newCapacity)63 void reserveCapacity(size_t newCapacity) { buffer.reserveCapacity(newCapacity); } resize(size_t size)64 void resize(size_t size) { buffer.resize(size); } size()65 size_t size() const { return buffer.size(); } 66 67 UChar operator[](size_t i) const { return buffer.at(i); } 68 build()69 UString build() 70 { 71 buffer.shrinkToFit(); 72 if (buffer.size() && !buffer.data()) 73 CRASH(); 74 return UString::adopt(buffer); 75 } 76 77 protected: 78 Vector<UChar, 64> buffer; 79 }; 80 81 } 82 83 #endif 84