/platform/external/webkit/WebCore/bindings/js/JSWebGLArrayBufferConstructor.h
https://github.com/aharish/totoro-gb-opensource-update2 · C Header · 97 lines · 50 code · 15 blank · 32 comment · 6 complexity · 23203efc194d8db15018141843541f53 MD5 · raw file
- /*
- * Copyright (C) 2009 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 COMPUTER, 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 COMPUTER, 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 JSWebGLArrayBufferConstructor_h
- #define JSWebGLArrayBufferConstructor_h
- #include "JSDOMBinding.h"
- #include "JSDocument.h"
- #include "JSWebGLArrayBuffer.h"
- #include <runtime/Error.h>
- namespace WebCore {
- class WebGLArray;
- // Template function used by CanvasXXXArrayConstructors
- template<class C, typename T>
- PassRefPtr<WebGLArray> construct(JSC::ExecState* exec, const JSC::ArgList& args)
- {
- // There are 3 constructors:
- //
- // 1) (in int size)
- // 2) (in WebGLArrayBuffer buffer, [Optional] in int offset, [Optional] in unsigned int length)
- // 3) (in sequence<T>) - This ends up being a JS "array-like" object
- //
- RefPtr<C> arrayObject;
-
- // For the 0 args case, just create an object without a buffer
- if (args.size() < 1)
- return C::create(0, 0, 0);
-
- if (args.at(0).isObject()) {
- RefPtr<WebGLArrayBuffer> buffer = toWebGLArrayBuffer(args.at(0));
- if (buffer) {
- int offset = (args.size() > 1) ? args.at(1).toInt32(exec) : 0;
- unsigned int length = (args.size() > 2) ? static_cast<unsigned int>(args.at(2).toInt32(exec)) : 0;
- return C::create(buffer, offset, length);
- }
-
- JSC::JSObject* array = asObject(args.at(0));
- int length = array->get(exec, JSC::Identifier(exec, "length")).toInt32(exec);
- void* tempValues;
- if (!tryFastMalloc(length * sizeof(T)).getValue(tempValues)) {
- throwError(exec, JSC::GeneralError);
- return 0;
- }
-
- OwnFastMallocPtr<T> values(static_cast<T*>(tempValues));
- for (int i = 0; i < length; ++i) {
- JSC::JSValue v = array->get(exec, i);
- if (exec->hadException())
- return 0;
- values.get()[i] = static_cast<T>(v.toNumber(exec));
- }
-
- return C::create(values.get(), length);
- }
-
- unsigned size = static_cast<unsigned>(args.at(0).toInt32(exec));
- return C::create(size);
- }
- class JSWebGLArrayBufferConstructor : public DOMConstructorObject {
- public:
- JSWebGLArrayBufferConstructor(JSC::ExecState*, JSDOMGlobalObject*);
- static const JSC::ClassInfo s_info;
- private:
- virtual JSC::ConstructType getConstructData(JSC::ConstructData&);
- virtual const JSC::ClassInfo* classInfo() const { return &s_info; }
- };
- }
- #endif // JSWebGLArrayBufferConstructor_h