C++ Handle::NumberValue方法代码示例

/*! Sets a sample in the queued output buffer */
void Audio::AudioEngine::setSample( int position, Handle<Value> sample ) {
	int temp;
	switch( m_uSampleFormat ) {
	case paFloat32:
		((float *)m_cachedOutputSampleBlock[m_uCurrentWriteBuffer])[position] = (float)sample->NumberValue();
		break;

	case paInt32:
		((int *)m_cachedOutputSampleBlock[m_uCurrentWriteBuffer])[position] = (int)sample->NumberValue();
		break;

	case paInt24:
		temp = (int)sample->NumberValue();
		m_cachedOutputSampleBlock[m_uCurrentWriteBuffer][3*position + 0] = temp >> 16;
		m_cachedOutputSampleBlock[m_uCurrentWriteBuffer][3*position + 1] = temp >> 8;
		m_cachedOutputSampleBlock[m_uCurrentWriteBuffer][3*position + 2] = temp;
		break;

	case paInt16:
		((int16_t *)m_cachedOutputSampleBlock[m_uCurrentWriteBuffer])[position] = (int16_t)sample->NumberValue();
		break;

	default:
		m_cachedOutputSampleBlock[m_uCurrentWriteBuffer][position] = (char)sample->NumberValue();
		break;
	}
} // end AudioEngine::setSample()

	void SerializeField(google::protobuf::Message *message, const Reflection *r, const FieldDescriptor *field, Handle<Value> val) {
		const EnumValueDescriptor *enumValue = NULL;
		bool repeated = field->is_repeated();

		switch (field->cpp_type()) {
		case FieldDescriptor::CPPTYPE_INT32:
			SET_VALUE(Int32, val->Int32Value());
			break;
		case FieldDescriptor::CPPTYPE_INT64:
			SET_VALUE(Int64, val->NumberValue());
			break;
		case FieldDescriptor::CPPTYPE_UINT32:
			SET_VALUE(UInt32, val->Uint32Value());
			break;
		case FieldDescriptor::CPPTYPE_UINT64:
			SET_VALUE(UInt64, val->NumberValue());
			break;
		case FieldDescriptor::CPPTYPE_DOUBLE:
			SET_VALUE(Double, val->NumberValue());
			break;
		case FieldDescriptor::CPPTYPE_FLOAT:
			SET_VALUE(Float, val->NumberValue());
			break;
		case FieldDescriptor::CPPTYPE_BOOL:
			SET_VALUE(Bool, val->BooleanValue());
			break;
		case FieldDescriptor::CPPTYPE_ENUM:
			enumValue = val->IsNumber() ? 
				field->enum_type()->FindValueByNumber(val->Int32Value()) :
				field->enum_type()->FindValueByName(*String::AsciiValue(val));
			if (enumValue != NULL)
				SET_VALUE(Enum, enumValue);
			break;
		case FieldDescriptor::CPPTYPE_MESSAGE:
			if (val->IsObject()) {
				Type* type = protobuf->GetType(field->message_type());
				type->SerializePart(repeated ?
					r->AddMessage(message, field) :
					r->MutableMessage(message, field), val.As<Object>());
			}
			break;
		case FieldDescriptor::CPPTYPE_STRING:
			if (Buffer::HasInstance(val)) {
				Local<Object> buf = val->ToObject();
				SET_VALUE(String, std::string(Buffer::Data(buf), Buffer::Length(buf)));
			} else {
				String::Utf8Value utf8(val);
				SET_VALUE(String, std::string(*utf8, utf8.length()));
			}
			break;
		}
	}

void printV8Value(Handle<Value> value, bool force=false)
{
    Logging::Level level = force ? Logging::ERROR : Logging::INFO;

    if (!Logging::shouldShow(level)) return;

    HandleScope handleScope;

    if (value.IsEmpty())
        Logging::log(level, "Empty handle\r\n");
    else if (value->IsInt32())
        Logging::log(level, "INT: %d\r\n", value->IntegerValue());
    else if (value->IsNull())
        Logging::log(level, "NULL (null)\r\n");
    else if (value->IsUndefined())
        Logging::log(level, "VOID (undefined)\r\n");
    else if (value->IsBoolean())
        Logging::log(level, "BOOLEAN: %d\r\n", value->BooleanValue());
    else if (value->IsNumber())
        Logging::log(level, "NUMBER: %f\r\n", value->NumberValue());
    else if (value->IsString())
        Logging::log(level, "STRING: ?\r\n");
    else if (value->IsObject())
        Logging::log(level, "OBJECT (object)\r\n");
    else
        Logging::log(level, "Uncertain V8 value\n");
}

/* NAME
 *   Connection::v8Date2OraDate
 *
 * DESCRIPTION
 *   To convert v8::Date value (double value in seconds) to Oracle DB Type
 *
 * PARAMETERS
 *   val      - expected to be a v8::Date Value
 *   bind     - bind structure to update.
 *
 * NOTE:
 *   This function is used for IN Bind parameters, when v8::Date value is
 *   passed, conversion to Oracle-DB Type happens here.
 *
 */
void Connection::v8Date2OraDate ( Handle<Value> val, Bind *bind)
{
  HandleScope scope;
  Handle<Date> date = val.As<Date>();    // Expects to be of v8::Date type

  // Get the number of seconds from 1970-1-1 0:0:0
  *(long double *)(bind->extvalue) = date->NumberValue ();
}

static Handle<Value> uSleepCallback(const Arguments& args){
    if (args.Length() < 1) return v8::Undefined();
    HandleScope scope;
    Handle<Value> arg = args[0];
    double duration = arg->NumberValue();
    usleep((int)duration);
    return v8::Undefined();
}

double GeoJSONReader::valueToDouble(Handle<Value> value) {

    double number = value->NumberValue();
    if (number != number)
        throw "A coordinate value must be numeric";


    return number;
}

 void v8ConvertIn(const Handle<Value> & value, QuantLib::Date & date)
 {
     if (value->IsNumber())
     {
         const double val = value->NumberValue();
         date = QuantLib::Date(val);
     }
     else
     {
         THROW_EXCEPTION("value is not a number");
     }
 }

inline bool setField(OGRFeature* f, int field_index, Handle<Value> val){
	if (val->IsInt32()) {
		f->SetField(field_index, val->Int32Value());
	} else if (val->IsNumber()) {
		f->SetField(field_index, val->NumberValue());
	} else if (val->IsString()) {
		std::string str = *NanUtf8String(val);
		f->SetField(field_index, str.c_str());
	} else if(val->IsNull() || val->IsUndefined()) {
		f->UnsetField(field_index);
	} else {
		return true;
	}
	return false;
}

int Conv::ToJavaDate(JNIEnv *jniEnv, Handle<Value> val, jobject *jVal) {
  double dateTime;
  if(val->IsDate()) {
    dateTime = Date::Cast(*val)->NumberValue();
  } else {
    dateTime = val->NumberValue();
  }
  jobject ob = jniEnv->NewObject(jni.java.util.Date.class_, jni.java.util.Date.ctor, (jlong)dateTime);
  if(ob) {
    *jVal = ob;
    return OK;
  }
  if(jniEnv->ExceptionCheck())
    jniEnv->ExceptionClear();
  return ErrorVM;
}

int Conv::ToJavaString(JNIEnv *jniEnv, Handle<Value> val, jstring *jVal) {
  Handle<String> vString;
  Handle<Value> empty, vRes;
  jstring ob;
  char buf[64];
  switch(GetNaturalType(val)) {
    default: {
      if(val->IsObject()) {
        /* call ToString() in javascript */
        Handle<Object> oVal = val->ToObject();
        Handle<Value> vToString = oVal->Get(sToString);
        if(!vToString.IsEmpty() && vToString->IsFunction()) {
          Handle<Function> fToString = Handle<Function>::Cast(vToString);
          vRes = fToString->CallAsFunction(oVal, 0, &empty);
          if(!vRes.IsEmpty() && (vRes->IsString() || vRes->IsStringObject())) {
            return ToJavaString(jniEnv, vRes->ToString(), jVal);
          }
        }
      }
      return ErrorType;
    }
    case TYPE_UNDEFINED:
    case TYPE_NULL:
      *jVal = 0;
      return OK;
    case TYPE_BOOL:
      return ToJavaString(jniEnv, (val->BooleanValue() ? "true" : "false"), jVal);
    case TYPE_INT:
      sprintf(buf, "%d", val->Int32Value());
      return ToJavaString(jniEnv, buf, jVal);
    case TYPE_LONG:
      sprintf(buf, "%lld", val->IntegerValue());
      return ToJavaString(jniEnv, buf, jVal);
    case TYPE_DOUBLE:
      sprintf(buf, "%g", val->NumberValue());
      return ToJavaString(jniEnv, buf, jVal);
    case TYPE_STRING:
      return ToJavaString(jniEnv, val->ToString(), (jstring *)jVal);
  }
  if(ob) {
    *jVal = ob;
    return OK;
  }
  if(jniEnv->ExceptionCheck())
    jniEnv->ExceptionClear();
  return ErrorVM;
}

void v8_to_gvalue(Handle<Value> v, GValue *gv, GParamSpec *spec) {
	if(v->IsNumber()) {
		g_value_init(gv, G_TYPE_FLOAT);
		g_value_set_float(gv, v->NumberValue());
	} else if(v->IsString()) {
        String::Utf8Value value(v->ToString());
	    if(spec->value_type == GST_TYPE_CAPS) {
	        GstCaps* caps = gst_caps_from_string(*value);
	        g_value_init(gv, GST_TYPE_CAPS);
	        g_value_set_boxed(gv, caps);
	    } else {
	        g_value_init(gv, G_TYPE_STRING);
            g_value_set_string(gv, *value);
	    }
	} else if(v->IsBoolean()) {
		g_value_init(gv, G_TYPE_BOOLEAN);
		g_value_set_boolean(gv, v->BooleanValue());
	}

	return;
}

VALUE rr_v82rb(Handle<Value> value) {
  if (value.IsEmpty()) {
    return rr_v8_value_empty();
  }
  if (value->IsUndefined() || value->IsNull()) {
    return Qnil;
  }
  if (value->IsExternal()) {
    return rr_reflect_v8_external(value);
  }
  if (value->IsUint32()) {
    return UINT2NUM(value->Uint32Value());
  }
  if (value->IsInt32()) {
    return INT2FIX(value->Int32Value());
  }
  if (value->IsBoolean()) {
    return value->BooleanValue() ? Qtrue : Qfalse;
  }
  if (value->IsNumber()) {
    return rb_float_new(value->NumberValue());
  }  
  if (value->IsString()) {
    return rr_reflect_v8_string(value);
  }
  if (value->IsFunction()) {
    return rr_reflect_v8_function(value);
  }
  if (value->IsArray()) {
    return rr_reflect_v8_array(value);
  }
  if (value->IsDate()) {
    return rr_reflect_v8_date(value);
  }
  if (value->IsObject()) {
    return rr_reflect_v8_object(value);
  }
  return rr_wrap_v8_value(value);  
}

/*
   DESCRIPTION
     Processing in binds

   PARAMETERS:
     Handle value, bind struct, eBaton struct
*/
void Connection::GetInBindParams (Handle<Value> v8val, Bind* bind,
                                           eBaton* executeBaton, BindType type)
{
  bind->ind  = 0;
  if(v8val->IsUndefined() || v8val->IsNull())
  {
    bind->value = NULL;
    bind->ind   = -1;
    bind->type        = dpi::DpiVarChar;
  }
  else if(v8val->IsString())
  {
    if( bind->type && bind->type != DATA_STR )
    {
      executeBaton->error= NJSMessages::getErrorMsg(
                             errBindValueAndTypeMismatch, 2);
      goto exitGetInBindParams;
    }

    v8::String::Utf8Value str(v8val->ToString());

    bind->type = dpi::DpiVarChar;
    if(type == BIND_INOUT)
    {
      bind->len = str.length();
    }
    else // IN
    {
      bind->maxSize = bind->len = str.length();
    }
    DPI_SZ_TYPE size = (bind->maxSize >= bind->len ) ?
                        bind->maxSize : bind->len;
    if(size)
    {
      bind->value = (char*)malloc(size);
      if(str.length())
        memcpy(bind->value, *str, str.length());
    }
  }
  else if(v8val->IsInt32())
  {
    if( bind->type && bind->type != DATA_NUM )
    {
      executeBaton->error= NJSMessages::getErrorMsg(
                             errBindValueAndTypeMismatch, 2);
      goto exitGetInBindParams;
    }
    bind->type = dpi::DpiInteger;
    bind->maxSize = bind->len = sizeof(int);
    bind->value = (int*)malloc(bind->len);
    *(int*)(bind->value) = v8val->ToInt32()->Value();
  }
  else if(v8val->IsUint32())
  {
    if( bind->type && bind->type != DATA_NUM )
    {
      executeBaton->error= NJSMessages::getErrorMsg(
                             errBindValueAndTypeMismatch, 2);
      goto exitGetInBindParams;
    }
    bind->type = dpi::DpiUnsignedInteger;
    bind->maxSize = bind->len = sizeof(unsigned int);
    bind->value = (unsigned int*)malloc(bind->len);
    *(unsigned int*)(bind->value) = v8val->ToUint32()->Value();
  }
  else if(v8val->IsNumber())
  {
    if( bind->type && bind->type != DATA_NUM )
    {
      executeBaton->error= NJSMessages::getErrorMsg(errBindValueAndTypeMismatch, 2);
      goto exitGetInBindParams;
    }
    bind->type = dpi::DpiDouble;
    bind->maxSize = bind->len = sizeof(double);
    bind->value = (double*)malloc(bind->len);
    *(double*)(bind->value) = v8val->NumberValue();
  }
  else if(v8val->IsDate ())
  {
    if( bind->type && bind->type != DATA_DATE )
    {
      executeBaton->error= NJSMessages::getErrorMsg(errBindValueAndTypeMismatch, 2);
      goto exitGetInBindParams;
    }
    /* This has to be allocated after stmt is initialized */
    bind->dttmarr = NULL ;
    bind->extvalue = (long double *) malloc (sizeof ( long double ) );
    bind->value = (long double *)malloc (sizeof ( long double ));
    bind->type = dpi::DpiTimestampLTZ;
    bind->len = 0;
    bind->maxSize = 0;
    /* Convert v8::Date value to long double */
    Connection::v8Date2OraDate ( v8val, bind);
//.........这里部分代码省略.........

jsvalue JsEngine::AnyFromV8(Handle<Value> value, Handle<Object> thisArg)
{
    jsvalue v;
    
    // Initialize to a generic error.
    v.type = JSVALUE_TYPE_UNKNOWN_ERROR;
    v.length = 0;
    v.value.str = 0;
    
    if (value->IsNull() || value->IsUndefined()) {
        v.type = JSVALUE_TYPE_NULL;
    }                
    else if (value->IsBoolean()) {
        v.type = JSVALUE_TYPE_BOOLEAN;
        v.value.i32 = value->BooleanValue() ? 1 : 0;
    }
    else if (value->IsInt32()) {
        v.type = JSVALUE_TYPE_INTEGER;
        v.value.i32 = value->Int32Value();            
    }
    else if (value->IsUint32()) {
        v.type = JSVALUE_TYPE_INDEX;
        v.value.i64 = value->Uint32Value();            
    }
    else if (value->IsNumber()) {
        v.type = JSVALUE_TYPE_NUMBER;
        v.value.num = value->NumberValue();
    }
    else if (value->IsString()) {
        v = StringFromV8(value);
    }
    else if (value->IsDate()) {
        v.type = JSVALUE_TYPE_DATE;
        v.value.num = value->NumberValue();
    }
    else if (value->IsArray()) {
        Handle<Array> object = Handle<Array>::Cast(value->ToObject());
        v.length = object->Length();
        jsvalue* array = new jsvalue[v.length];
        if (array != NULL) {
            for(int i = 0; i < v.length; i++) {
                array[i] = AnyFromV8(object->Get(i));
            }
            v.type = JSVALUE_TYPE_ARRAY;
            v.value.arr = array;
        }
    }
    else if (value->IsFunction()) {
		Handle<Function> function = Handle<Function>::Cast(value);
		jsvalue* array = new jsvalue[2];
        if (array != NULL) { 
			array[0].value.ptr = new Persistent<Object>(Persistent<Function>::New(function));
			array[0].length = 0;
			array[0].type = JSVALUE_TYPE_WRAPPED;
			if (!thisArg.IsEmpty()) {
				array[1].value.ptr = new Persistent<Object>(Persistent<Object>::New(thisArg));
				array[1].length = 0;
				array[1].type = JSVALUE_TYPE_WRAPPED;
			} else {
				array[1].value.ptr = NULL;
				array[1].length = 0;
				array[1].type = JSVALUE_TYPE_NULL;
			}
	        v.type = JSVALUE_TYPE_FUNCTION;
            v.value.arr = array;
        }
    }
    else if (value->IsObject()) {
        Handle<Object> obj = Handle<Object>::Cast(value);
        if (obj->InternalFieldCount() == 1)
            v = ManagedFromV8(obj);
        else
            v = WrappedFromV8(obj);
    }

    return v;
}

int Conv::ToJavaObject(JNIEnv *jniEnv, Handle<Value> val, int expectedType, jobject *jVal) {

  /* empty, null and undefined convert to null for any nullable type */
  if((expectedType >= TYPE__OB_START) && (val.IsEmpty() || val->IsNull() || val->IsUndefined())) {
    *jVal = 0;
    return OK;
  }

  if(isSequence(expectedType))
    return ToJavaSequence(jniEnv, val, getComponentType(expectedType), (jarray *)jVal);
  
  if(isArray(expectedType))
    return arrayConv->ToJavaArray(jniEnv, val, getComponentType(expectedType), jVal);
  
  if(isMap(expectedType))
    return ToJavaMap(jniEnv, val, getComponentType(expectedType), jVal);
  
  if(isInterface(expectedType))
    return ToJavaInterface(jniEnv, val, getClassId(expectedType), jVal);
  
  if(isDict(expectedType))
    return ToJavaDict(jniEnv, val, getClassId(expectedType), jVal);
  
  HandleScope scope;
  jobject ob;
  switch(expectedType) {
    default:
      return ErrorType;
    case TYPE_BOOL: {
      bool isVoid = val.IsEmpty() ? false : val->BooleanValue();
      ob = jniEnv->CallStaticObjectMethod(jni.anode.js.JSValue_Bool.class_, jni.anode.js.JSValue_Bool.ctor, isVoid);
      break;
    }
    case TYPE_BYTE:
    case TYPE_INT: {
      jint intValue = val.IsEmpty() ? 0 : val->Int32Value();
      ob = jniEnv->CallStaticObjectMethod(jni.anode.js.JSValue_Long.class_, jni.anode.js.JSValue_Long.ctor, (jlong)intValue);
      break;
    }
    case TYPE_LONG: {
      jlong longValue = val.IsEmpty() ? 0 : val->IntegerValue();
      ob = jniEnv->CallStaticObjectMethod(jni.anode.js.JSValue_Long.class_, jni.anode.js.JSValue_Long.ctor, longValue);
      break;
    }
    case TYPE_DOUBLE: {
      jdouble doubleValue = val.IsEmpty() ? 0 : val->NumberValue();
      ob = jniEnv->CallStaticObjectMethod(jni.anode.js.JSValue_Double.class_, jni.anode.js.JSValue_Double.ctor, doubleValue);
      break;
    }
    case TYPE_STRING:
      return ToJavaString(jniEnv, val, (jstring *)jVal);
    case TYPE_DATE:
      return ToJavaDate(jniEnv, val, jVal);
    case TYPE_OBJECT:
      return ToNaturalJavaObject(jniEnv, val, jVal);
    case TYPE_OBJECT|TYPE_BOOL: {
      bool isVoid = val->BooleanValue();
      ob = jniEnv->NewObject(jni.java.lang.Boolean.class_, jni.java.lang.Boolean.ctor, isVoid);
      break;
    }
    case TYPE_OBJECT|TYPE_BYTE: {
      jbyte byteValue = val->Int32Value();
      ob = jniEnv->NewObject(jni.java.lang.Byte.class_, jni.java.lang.Byte.ctor, byteValue);
      break;
    }
    case TYPE_OBJECT|TYPE_INT: {
      jint intValue = val->Int32Value();
      ob = jniEnv->NewObject(jni.java.lang.Integer.class_, jni.java.lang.Integer.ctor, intValue);
      break;
    }
    case TYPE_OBJECT|TYPE_LONG: {
      jlong longValue = val->IntegerValue();
      ob = jniEnv->NewObject(jni.java.lang.Long.class_, jni.java.lang.Long.ctor, longValue);
      break;
    }
    case TYPE_OBJECT|TYPE_DOUBLE: {
      jdouble doubleValue = val->NumberValue();
      ob = jniEnv->NewObject(jni.java.lang.Double.class_, jni.java.lang.Double.ctor, doubleValue);
      break;
    }
  }
  if(ob) {
    *jVal = ob;
    return OK;
  }
  if(jniEnv->ExceptionCheck())
    jniEnv->ExceptionClear();
  return ErrorVM;
}