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/*
* 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 "npruntime_impl.h"
#include "npruntime_priv.h"
#include "NPV8Object.h"
#include "V8Binding.h"
#include "V8NPObject.h"
#include <wtf/text/WTFString.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->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::Handle<v8::String> str = object->ToString();
int length = str->Utf8Length() + 1;
char* utf8Chars = reinterpret_cast<char*>(malloc(length));
str->WriteUtf8(utf8Chars, length, 0, v8::String::HINT_MANY_WRITES_EXPECTED);
STRINGN_TO_NPVARIANT(utf8Chars, length-1, *result);
} else if (object->IsObject()) {
DOMWindow* window = toDOMWindow(v8::Context::GetCurrent());
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 v8Integer(NPVARIANT_TO_INT32(*variant));
case NPVariantType_Double:
return v8::Number::New(NPVARIANT_TO_DOUBLE(*variant));
case NPVariantType_Bool:
return v8Boolean(NPVARIANT_TO_BOOLEAN(*variant));
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
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