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author | Shimeng (Simon) Wang <swang@google.com> | 2010-12-07 17:22:45 -0800 |
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committer | Shimeng (Simon) Wang <swang@google.com> | 2010-12-22 14:15:40 -0800 |
commit | 4576aa36e9a9671459299c7963ac95aa94beaea9 (patch) | |
tree | 3863574e050f168c0126ecb47c83319fab0972d8 /WebCore/bindings/js/JSDataViewCustom.cpp | |
parent | 55323ac613cc31553107b68603cb627264d22bb0 (diff) | |
download | external_webkit-4576aa36e9a9671459299c7963ac95aa94beaea9.zip external_webkit-4576aa36e9a9671459299c7963ac95aa94beaea9.tar.gz external_webkit-4576aa36e9a9671459299c7963ac95aa94beaea9.tar.bz2 |
Merge WebKit at r73109: Initial merge by git.
Change-Id: I61f1a66d9642e3d8405d3ac6ccab2a53421c75d8
Diffstat (limited to 'WebCore/bindings/js/JSDataViewCustom.cpp')
-rw-r--r-- | WebCore/bindings/js/JSDataViewCustom.cpp | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/WebCore/bindings/js/JSDataViewCustom.cpp b/WebCore/bindings/js/JSDataViewCustom.cpp new file mode 100644 index 0000000..f17e0e1 --- /dev/null +++ b/WebCore/bindings/js/JSDataViewCustom.cpp @@ -0,0 +1,174 @@ +/* + * Copyright (C) 2010 Google 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 AND ITS CONTRIBUTORS "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 OR ITS 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. + */ + +#include "config.h" + +#if ENABLE(3D_CANVAS) || ENABLE(BLOB) + +#include "JSDataView.h" + +#include "DataView.h" +#include "ExceptionCode.h" +#include "JSArrayBufferViewHelper.h" +#include <wtf/MathExtras.h> + +using namespace JSC; + +namespace WebCore { + +enum DataViewAccessType { + AccessDataViewMemberAsInt8, + AccessDataViewMemberAsUint8, + AccessDataViewMemberAsFloat32, + AccessDataViewMemberAsFloat64 +}; + +JSValue toJS(ExecState* exec, JSDOMGlobalObject* globalObject, DataView* object) +{ + return getDOMObjectWrapper<JSDataView>(exec, globalObject, object); +} + +EncodedJSValue JSC_HOST_CALL JSDataViewConstructor::constructJSDataView(ExecState* exec) +{ + if (exec->argument(0).isNull() || !exec->argument(0).isObject()) + return throwVMTypeError(exec); + + RefPtr<DataView> view = constructArrayBufferViewWithArrayBufferArgument<DataView, char>(exec); + if (!view.get()) { + setDOMException(exec, INDEX_SIZE_ERR); + return JSValue::encode(jsUndefined()); + } + + JSDataViewConstructor* jsConstructor = static_cast<JSDataViewConstructor*>(exec->callee()); + return JSValue::encode(asObject(toJS(exec, jsConstructor->globalObject(), view.get()))); +} + +static JSValue getDataViewMember(ExecState* exec, DataViewAccessType type) +{ + JSValue thisValue = exec->hostThisValue(); + if (!thisValue.inherits(&JSDataView::s_info)) + return throwTypeError(exec); + JSDataView* castedThis = static_cast<JSDataView*>(asObject(thisValue)); + DataView* imp = static_cast<DataView*>(castedThis->impl()); + if (exec->argumentCount() < 1) + return throwError(exec, createSyntaxError(exec, "Not enough arguments")); + ExceptionCode ec = 0; + unsigned byteOffset = exec->argument(0).toUInt32(exec); + if (exec->hadException()) + return jsUndefined(); + + bool littleEndian = false; + if (exec->argumentCount() > 1 && (type == AccessDataViewMemberAsFloat32 || type == AccessDataViewMemberAsFloat64)) { + littleEndian = exec->argument(1).toBoolean(exec); + if (exec->hadException()) + return jsUndefined(); + } + + JSC::JSValue result; + switch (type) { + case AccessDataViewMemberAsInt8: + result = jsNumber(imp->getInt8(byteOffset, ec)); + break; + case AccessDataViewMemberAsUint8: + result = jsNumber(imp->getUint8(byteOffset, ec)); + break; + case AccessDataViewMemberAsFloat32: + case AccessDataViewMemberAsFloat64: { + double value = (type == AccessDataViewMemberAsFloat32) ? imp->getFloat32(byteOffset, littleEndian, ec) : imp->getFloat64(byteOffset, littleEndian, ec); + result = isnan(value) ? JSValue(nonInlineNaN()) : jsNumber(value); + break; + } default: + ASSERT_NOT_REACHED(); + break; + } + setDOMException(exec, ec); + return result; +} + +JSValue JSC_HOST_CALL JSDataView::getInt8(ExecState* exec) +{ + return getDataViewMember(exec, AccessDataViewMemberAsInt8); +} + +JSValue JSC_HOST_CALL JSDataView::getUint8(ExecState* exec) +{ + return getDataViewMember(exec, AccessDataViewMemberAsUint8); +} + +JSValue JSC_HOST_CALL JSDataView::getFloat32(ExecState* exec) +{ + return getDataViewMember(exec, AccessDataViewMemberAsFloat32); +} + +JSValue JSC_HOST_CALL JSDataView::getFloat64(ExecState* exec) +{ + return getDataViewMember(exec, AccessDataViewMemberAsFloat64); +} + +static JSValue setDataViewMember(ExecState* exec, DataViewAccessType type) +{ + JSValue thisValue = exec->hostThisValue(); + if (!thisValue.inherits(&JSDataView::s_info)) + return throwTypeError(exec); + JSDataView* castedThis = static_cast<JSDataView*>(asObject(thisValue)); + DataView* imp = static_cast<DataView*>(castedThis->impl()); + if (exec->argumentCount() < 2) + return throwError(exec, createSyntaxError(exec, "Not enough arguments")); + ExceptionCode ec = 0; + unsigned byteOffset = exec->argument(0).toUInt32(exec); + if (exec->hadException()) + return jsUndefined(); + int value = exec->argument(1).toInt32(exec); + if (exec->hadException()) + return jsUndefined(); + + switch (type) { + case AccessDataViewMemberAsInt8: + imp->setInt8(byteOffset, static_cast<char>(value), ec); + break; + case AccessDataViewMemberAsUint8: + imp->setUint8(byteOffset, static_cast<unsigned char>(value), ec); + break; + default: + ASSERT_NOT_REACHED(); + break; + } + setDOMException(exec, ec); + return jsUndefined(); +} + +JSValue JSC_HOST_CALL JSDataView::setInt8(ExecState* exec) +{ + return setDataViewMember(exec, AccessDataViewMemberAsInt8); +} + +JSValue JSC_HOST_CALL JSDataView::setUint8(ExecState* exec) +{ + return setDataViewMember(exec, AccessDataViewMemberAsUint8); +} + +} // namespace WebCore + +#endif // ENABLE(3D_CANVAS) || ENABLE(BLOB) |