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 COMPUTER, 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 COMPUTER, 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 "JSArrayBuffer.h" 28 29 #include "ArrayBuffer.h" 30 #include "ExceptionCode.h" 31 #include <runtime/Error.h> 32 33 namespace WebCore { 34 35 using namespace JSC; 36 37 EncodedJSValue JSC_HOST_CALL JSArrayBufferConstructor::constructJSArrayBuffer(ExecState* exec) 38 { 39 JSArrayBufferConstructor* jsConstructor = static_cast<JSArrayBufferConstructor*>(exec->callee()); 40 41 int length = 0; 42 if (exec->argumentCount() > 0) 43 length = exec->argument(0).toInt32(exec); // NaN/+inf/-inf returns 0, this is intended by WebIDL 44 RefPtr<ArrayBuffer> buffer; 45 if (length >= 0) 46 buffer = ArrayBuffer::create(static_cast<unsigned>(length), 1); 47 if (!buffer.get()) 48 return throwVMError(exec, createRangeError(exec, "ArrayBuffer size is not a small enough positive integer.")); 49 return JSValue::encode(asObject(toJS(exec, jsConstructor->globalObject(), buffer.get()))); 50 } 51 52 } // namespace WebCore 53
