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 

    28 #if ENABLE(3D_CANVAS)

    29 

    30 #include "config.h"

    31 #include "JSArrayBufferView.h"

    32 #include "JSInt8Array.h"

    33 #include "JSUint8Array.h"

    34 #include "JSInt16Array.h"

    35 #include "JSUint16Array.h"

    36 #include "JSInt32Array.h"

    37 #include "JSUint32Array.h"

    38 #include "JSFloat32Array.h"

    39 

    40 #include "ArrayBufferView.h"

    41 

    42 using namespace JSC;

    43 

    44 namespace WebCore {

    45 

    46 JSC::JSValue toJS(JSC::ExecState* exec, JSDOMGlobalObject* globalObject, ArrayBufferView* object)

    47 {

    48     if (!object)

    49         return jsUndefined();

    50         

    51     if (object) {

    52         if (object->isFloatArray())

    53             return getDOMObjectWrapper<JSFloat32Array>(exec, globalObject, static_cast<Float32Array*>(object));

    54         if (object->isUnsignedByteArray())

    55             return getDOMObjectWrapper<JSUint8Array>(exec, globalObject, static_cast<Uint8Array*>(object));

    56         if (object->isByteArray())

    57             return getDOMObjectWrapper<JSInt8Array>(exec, globalObject, static_cast<Int8Array*>(object));

    58         if (object->isIntArray())

    59             return getDOMObjectWrapper<JSInt32Array>(exec, globalObject, static_cast<Int32Array*>(object));

    60         if (object->isUnsignedIntArray())

    61             return getDOMObjectWrapper<JSUint32Array>(exec, globalObject, static_cast<Uint32Array*>(object));

    62         if (object->isShortArray())

    63             return getDOMObjectWrapper<JSInt16Array>(exec, globalObject, static_cast<Int16Array*>(object));

    64         if (object->isUnsignedShortArray())

    65             return getDOMObjectWrapper<JSUint16Array>(exec, globalObject, static_cast<Uint16Array*>(object));

    66     }

    67     return jsUndefined();

    68 }

    69 

    70 JSValue JSArrayBufferView::slice(ExecState* exec)

    71 {

    72     ArrayBufferView* array = reinterpret_cast<ArrayBufferView*>(impl());

    73 

    74     int start, end;

    75     switch (exec->argumentCount()) {

    76     case 0:

    77         start = 0;

    78         end = array->length();

    79         break;

    80     case 1:

    81         start = exec->argument(0).toInt32(exec);

    82         end = array->length();

    83         break;

    84     default:

    85         start = exec->argument(0).toInt32(exec);

    86         end = exec->argument(1).toInt32(exec);

    87     }

    88     return toJS(exec, globalObject(), array->slice(start, end));

    89 }

    90 

    91 } // namespace WebCore

    92 

    93 #endif // ENABLE(3D_CANVAS)