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
constructJSArrayBuffer(ExecState * exec)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