1 /* 2 * Copyright (C) 2010 Google 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 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY 15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 16 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 17 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY 18 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 19 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 20 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 21 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #include "config.h" 27 #include "DataView.h" 28 29 #include "V8ArrayBufferViewCustom.h" 30 #include "V8Binding.h" 31 #include "V8BindingMacros.h" 32 #include "V8DataView.h" 33 #include "V8Proxy.h" 34 35 namespace WebCore { 36 37 v8::Handle<v8::Value> V8DataView::constructorCallback(const v8::Arguments& args) 38 { 39 INC_STATS("DOM.DataView.Constructor"); 40 41 if (!args.IsConstructCall()) 42 return throwError("DOM object constructor cannot be called as a function", V8Proxy::SyntaxError); 43 44 if (args[0]->IsNull() || !V8ArrayBuffer::HasInstance(args[0])) 45 return V8Proxy::throwTypeError(); 46 return constructWebGLArrayWithArrayBufferArgument<DataView, char>(args, &info, v8::kExternalByteArray, false); 47 } 48 49 v8::Handle<v8::Value> toV8(DataView* impl) 50 { 51 if (!impl) 52 return v8::Null(); 53 return V8DataView::wrap(impl); 54 } 55 56 v8::Handle<v8::Value> V8DataView::getInt8Callback(const v8::Arguments& args) 57 { 58 INC_STATS("DOM.DataView.getInt8"); 59 if (args.Length() < 1) 60 return throwError("Not enough arguments", V8Proxy::SyntaxError); 61 62 DataView* imp = V8DataView::toNative(args.Holder()); 63 ExceptionCode ec = 0; 64 EXCEPTION_BLOCK(unsigned, byteOffset, toUInt32(args[0])); 65 int8_t result = imp->getInt8(byteOffset, ec); 66 if (UNLIKELY(ec)) { 67 V8Proxy::setDOMException(ec); 68 return v8::Handle<v8::Value>(); 69 } 70 return v8::Integer::New(result); 71 } 72 73 v8::Handle<v8::Value> V8DataView::getUint8Callback(const v8::Arguments& args) 74 { 75 INC_STATS("DOM.DataView.getUint8"); 76 if (args.Length() < 1) 77 return throwError("Not enough arguments", V8Proxy::SyntaxError); 78 79 DataView* imp = V8DataView::toNative(args.Holder()); 80 ExceptionCode ec = 0; 81 EXCEPTION_BLOCK(unsigned, byteOffset, toUInt32(args[0])); 82 uint8_t result = imp->getUint8(byteOffset, ec); 83 if (UNLIKELY(ec)) { 84 V8Proxy::setDOMException(ec); 85 return v8::Handle<v8::Value>(); 86 } 87 return v8::Integer::New(result); 88 } 89 90 v8::Handle<v8::Value> V8DataView::setInt8Callback(const v8::Arguments& args) 91 { 92 INC_STATS("DOM.DataView.setInt8"); 93 if (args.Length() < 2) 94 return throwError("Not enough arguments", V8Proxy::SyntaxError); 95 96 DataView* imp = V8DataView::toNative(args.Holder()); 97 ExceptionCode ec = 0; 98 EXCEPTION_BLOCK(unsigned, byteOffset, toUInt32(args[0])); 99 EXCEPTION_BLOCK(int, value, toInt32(args[1])); 100 imp->setInt8(byteOffset, static_cast<int8_t>(value), ec); 101 if (UNLIKELY(ec)) 102 V8Proxy::setDOMException(ec); 103 return v8::Handle<v8::Value>(); 104 } 105 106 v8::Handle<v8::Value> V8DataView::setUint8Callback(const v8::Arguments& args) 107 { 108 INC_STATS("DOM.DataView.setUint8"); 109 if (args.Length() < 2) 110 return throwError("Not enough arguments", V8Proxy::SyntaxError); 111 112 DataView* imp = V8DataView::toNative(args.Holder()); 113 ExceptionCode ec = 0; 114 EXCEPTION_BLOCK(unsigned, byteOffset, toUInt32(args[0])); 115 EXCEPTION_BLOCK(int, value, toInt32(args[1])); 116 imp->setUint8(byteOffset, static_cast<uint8_t>(value), ec); 117 if (UNLIKELY(ec)) 118 V8Proxy::setDOMException(ec); 119 return v8::Handle<v8::Value>(); 120 } 121 122 } // namespace WebCore 123