--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/bindings/v8/V8NPUtils.cpp Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,170 @@
+/*
+ * Copyright (C) 2008, 2009 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:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * 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.
+ * * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
+ * OWNER 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.
+ */
+
+#include "config.h"
+#include "V8NPUtils.h"
+
+#include "DOMWindow.h"
+#include "Frame.h"
+#include "PlatformString.h"
+#include "npruntime_impl.h"
+#include "npruntime_priv.h"
+#include "NPV8Object.h"
+#include "V8NPObject.h"
+#include "V8Proxy.h"
+
+namespace WebCore {
+
+void convertV8ObjectToNPVariant(v8::Local<v8::Value> object, NPObject* owner, NPVariant* result)
+{
+ VOID_TO_NPVARIANT(*result);
+
+ // It is really the caller's responsibility to deal with the empty handle case because there could be different actions to
+ // take in different contexts.
+ ASSERT(!object.IsEmpty());
+
+ if (object.IsEmpty())
+ return;
+
+ if (object->IsInt32())
+ INT32_TO_NPVARIANT(object->NumberValue(), *result);
+ else if (object->IsNumber())
+ DOUBLE_TO_NPVARIANT(object->NumberValue(), *result);
+ else if (object->IsBoolean())
+ BOOLEAN_TO_NPVARIANT(object->BooleanValue(), *result);
+ else if (object->IsNull())
+ NULL_TO_NPVARIANT(*result);
+ else if (object->IsUndefined())
+ VOID_TO_NPVARIANT(*result);
+ else if (object->IsString()) {
+ v8::String::Utf8Value utf8(object);
+ char* utf8_chars = strdup(*utf8);
+ STRINGN_TO_NPVARIANT(utf8_chars, utf8.length(), *result);
+ } else if (object->IsObject()) {
+ DOMWindow* window = V8Proxy::retrieveWindow(V8Proxy::currentContext());
+ NPObject* npobject = npCreateV8ScriptObject(0, v8::Handle<v8::Object>::Cast(object), window);
+ if (npobject)
+ _NPN_RegisterObject(npobject, owner);
+ OBJECT_TO_NPVARIANT(npobject, *result);
+ }
+}
+
+v8::Handle<v8::Value> convertNPVariantToV8Object(const NPVariant* variant, NPObject* npobject)
+{
+ NPVariantType type = variant->type;
+
+ switch (type) {
+ case NPVariantType_Int32:
+ return v8::Integer::New(NPVARIANT_TO_INT32(*variant));
+ case NPVariantType_Double:
+ return v8::Number::New(NPVARIANT_TO_DOUBLE(*variant));
+ case NPVariantType_Bool:
+ return NPVARIANT_TO_BOOLEAN(*variant) ? v8::True() : v8::False();
+ case NPVariantType_Null:
+ return v8::Null();
+ case NPVariantType_Void:
+ return v8::Undefined();
+ case NPVariantType_String: {
+ NPString src = NPVARIANT_TO_STRING(*variant);
+ return v8::String::New(src.UTF8Characters, src.UTF8Length);
+ }
+ case NPVariantType_Object: {
+ NPObject* obj = NPVARIANT_TO_OBJECT(*variant);
+ if (obj->_class == npScriptObjectClass)
+ return reinterpret_cast<V8NPObject*>(obj)->v8Object;
+ return createV8ObjectForNPObject(obj, npobject);
+ }
+ default:
+ return v8::Undefined();
+ }
+}
+
+// Helper function to create an NPN String Identifier from a v8 string.
+NPIdentifier getStringIdentifier(v8::Handle<v8::String> str)
+{
+ const int kStackBufferSize = 100;
+
+ int bufferLength = str->Utf8Length() + 1;
+ if (bufferLength <= kStackBufferSize) {
+ // Use local stack buffer to avoid heap allocations for small strings. Here we should only use the stack space for
+ // stackBuffer when it's used, not when we use the heap.
+ //
+ // WriteUtf8 is guaranteed to generate a null-terminated string because bufferLength is constructed to be one greater
+ // than the string length.
+ char stackBuffer[kStackBufferSize];
+ str->WriteUtf8(stackBuffer, bufferLength);
+ return _NPN_GetStringIdentifier(stackBuffer);
+ }
+
+ v8::String::Utf8Value utf8(str);
+ return _NPN_GetStringIdentifier(*utf8);
+}
+
+struct ExceptionHandlerInfo {
+ ExceptionHandlerInfo* previous;
+ ExceptionHandler handler;
+ void* data;
+};
+
+static ExceptionHandlerInfo* topHandler;
+
+void pushExceptionHandler(ExceptionHandler handler, void* data)
+{
+ ExceptionHandlerInfo* info = new ExceptionHandlerInfo;
+ info->previous = topHandler;
+ info->handler = handler;
+ info->data = data;
+ topHandler = info;
+}
+
+void popExceptionHandler()
+{
+ ASSERT(topHandler);
+ ExceptionHandlerInfo* doomed = topHandler;
+ topHandler = topHandler->previous;
+ delete doomed;
+}
+
+ExceptionCatcher::ExceptionCatcher()
+{
+ if (!topHandler)
+ m_tryCatch.SetVerbose(true);
+}
+
+ExceptionCatcher::~ExceptionCatcher()
+{
+ if (!m_tryCatch.HasCaught())
+ return;
+
+ if (topHandler)
+ topHandler->handler(topHandler->data, *v8::String::Utf8Value(m_tryCatch.Exception()));
+}
+
+} // namespace WebCore