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Diffstat (limited to 'Source/WebKit2/Shared/UserMessageCoders.h')
| -rw-r--r-- | Source/WebKit2/Shared/UserMessageCoders.h | 309 |
1 files changed, 309 insertions, 0 deletions
diff --git a/Source/WebKit2/Shared/UserMessageCoders.h b/Source/WebKit2/Shared/UserMessageCoders.h new file mode 100644 index 0000000..1326a98 --- /dev/null +++ b/Source/WebKit2/Shared/UserMessageCoders.h @@ -0,0 +1,309 @@ +/* + * Copyright (C) 2010 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 INC. 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 INC. 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. + */ + +#ifndef UserMessageCoders_h +#define UserMessageCoders_h + +#include "ArgumentDecoder.h" +#include "ArgumentEncoder.h" +#include "ImmutableArray.h" +#include "ImmutableDictionary.h" +#include "ShareableBitmap.h" +#include "WebCoreArgumentCoders.h" +#include "WebImage.h" +#include "WebNumber.h" +#include "WebSerializedScriptValue.h" +#include "WebString.h" +#include "WebURL.h" +#include "WebUserContentURLPattern.h" + +namespace WebKit { + +// - Null -> Null +// - Array -> Array +// - Dictionary -> Dictionary +// - SerializedScriptValue -> SerializedScriptValue +// - String -> String +// - UserContentURLPattern -> UserContentURLPattern +// - WebDouble -> WebDouble +// - WebImage -> WebImage +// - WebUInt64 -> WebUInt64 +// - WebURL -> WebURL + +template<typename Owner> +class UserMessageEncoder { +public: + bool baseEncode(CoreIPC::ArgumentEncoder* encoder, APIObject::Type& type) const + { + if (!m_root) { + encoder->encodeUInt32(APIObject::TypeNull); + return true; + } + + type = m_root->type(); + encoder->encodeUInt32(type); + + switch (type) { + case APIObject::TypeArray: { + ImmutableArray* array = static_cast<ImmutableArray*>(m_root); + encoder->encode(static_cast<uint64_t>(array->size())); + for (size_t i = 0; i < array->size(); ++i) + encoder->encode(Owner(array->at(i))); + return true; + } + case APIObject::TypeDictionary: { + ImmutableDictionary* dictionary = static_cast<ImmutableDictionary*>(m_root); + const ImmutableDictionary::MapType& map = dictionary->map(); + encoder->encode(static_cast<uint64_t>(map.size())); + + ImmutableDictionary::MapType::const_iterator it = map.begin(); + ImmutableDictionary::MapType::const_iterator end = map.end(); + for (; it != end; ++it) { + encoder->encode(it->first); + encoder->encode(Owner(it->second.get())); + } + return true; + } + case APIObject::TypeString: { + WebString* string = static_cast<WebString*>(m_root); + encoder->encode(string->string()); + return true; + } + case APIObject::TypeSerializedScriptValue: { + WebSerializedScriptValue* scriptValue = static_cast<WebSerializedScriptValue*>(m_root); + encoder->encodeBytes(scriptValue->data().data(), scriptValue->data().size()); + return true; + } + case APIObject::TypeDouble: { + WebDouble* doubleObject = static_cast<WebDouble*>(m_root); + encoder->encode(doubleObject->value()); + return true; + } + case APIObject::TypeUInt64: { + WebUInt64* uint64Object = static_cast<WebUInt64*>(m_root); + encoder->encode(uint64Object->value()); + return true; + } + case APIObject::TypeBoolean: { + WebBoolean* booleanObject = static_cast<WebBoolean*>(m_root); + encoder->encode(booleanObject->value()); + return true; + } + case APIObject::TypeURL: { + WebURL* urlObject = static_cast<WebURL*>(m_root); + encoder->encode(urlObject->string()); + return true; + } + case APIObject::TypeUserContentURLPattern: { + WebUserContentURLPattern* urlPattern = static_cast<WebUserContentURLPattern*>(m_root); + encoder->encode(urlPattern->patternString()); + return true; + } + case APIObject::TypeImage: { + WebImage* image = static_cast<WebImage*>(m_root); + if (!image->bitmap()->isBackedBySharedMemory()) { + encoder->encode(false); + return true; + } + + SharedMemory::Handle handle; + if (!image->bitmap()->createHandle(handle)) + return false; + + encoder->encode(true); + + encoder->encode(image->size()); + encoder->encode(handle); + return true; + } + default: + break; + } + + return false; + } + +protected: + UserMessageEncoder(APIObject* root) + : m_root(root) + { + } + + APIObject* m_root; +}; + + +// Handles +// - Null -> Null +// - Array -> Array +// - Dictionary -> Dictionary +// - SerializedScriptValue -> SerializedScriptValue +// - String -> String +// - UserContentURLPattern -> UserContentURLPattern +// - WebDouble -> WebDouble +// - WebImage -> WebImage +// - WebUInt64 -> WebUInt64 +// - WebURL -> WebURL + +template<typename Owner> +class UserMessageDecoder { +public: + static bool baseDecode(CoreIPC::ArgumentDecoder* decoder, Owner& coder, APIObject::Type& type) + { + uint32_t typeAsUInt32; + if (!decoder->decode(typeAsUInt32)) + return false; + + type = static_cast<APIObject::Type>(typeAsUInt32); + + switch (type) { + case APIObject::TypeArray: { + uint64_t size; + if (!decoder->decode(size)) + return false; + + Vector<RefPtr<APIObject> > vector; + for (size_t i = 0; i < size; ++i) { + RefPtr<APIObject> element; + Owner messageCoder(coder, element); + if (!decoder->decode(messageCoder)) + return false; + vector.append(element.release()); + } + + coder.m_root = ImmutableArray::adopt(vector); + break; + } + case APIObject::TypeDictionary: { + uint64_t size; + if (!decoder->decode(size)) + return false; + + ImmutableDictionary::MapType map; + for (size_t i = 0; i < size; ++i) { + String key; + if (!decoder->decode(key)) + return false; + + RefPtr<APIObject> element; + Owner messageCoder(coder, element); + if (!decoder->decode(messageCoder)) + return false; + + std::pair<ImmutableDictionary::MapType::iterator, bool> result = map.set(key, element.release()); + if (!result.second) + return false; + } + + coder.m_root = ImmutableDictionary::adopt(map); + break; + } + case APIObject::TypeString: { + String string; + if (!decoder->decode(string)) + return false; + coder.m_root = WebString::create(string); + break; + } + case APIObject::TypeSerializedScriptValue: { + Vector<uint8_t> buffer; + if (!decoder->decodeBytes(buffer)) + return false; + coder.m_root = WebSerializedScriptValue::adopt(buffer); + break; + } + case APIObject::TypeDouble: { + double value; + if (!decoder->decode(value)) + return false; + coder.m_root = WebDouble::create(value); + break; + } + case APIObject::TypeUInt64: { + uint64_t value; + if (!decoder->decode(value)) + return false; + coder.m_root = WebUInt64::create(value); + break; + } + case APIObject::TypeBoolean: { + bool value; + if (!decoder->decode(value)) + return false; + coder.m_root = WebBoolean::create(value); + break; + } + case APIObject::TypeURL: { + String string; + if (!decoder->decode(string)) + return false; + coder.m_root = WebURL::create(string); + break; + } + case APIObject::TypeUserContentURLPattern: { + String string; + if (!decoder->decode(string)) + return false; + coder.m_root = WebUserContentURLPattern::create(string); + break; + } + case APIObject::TypeImage: { + bool didEncode = false; + if (!decoder->decode(didEncode)) + return false; + + if (!didEncode) + break; + + WebCore::IntSize size; + if (!decoder->decode(size)) + return false; + + SharedMemory::Handle handle; + if (!decoder->decode(handle)) + return false; + + coder.m_root = WebImage::create(ShareableBitmap::create(size, handle)); + return true; + } + default: + break; + } + + return true; + } + +protected: + UserMessageDecoder(RefPtr<APIObject>& root) + : m_root(root) + { + } + + RefPtr<APIObject>& m_root; +}; + +} // namespace WebKit + +#endif // UserMessageCoders_h |