peridot/vendor/go.temporal.io/sdk/converter/reflect.go

// The MIT License
//
// Copyright (c) 2020 Temporal Technologies Inc.  All rights reserved.
//
// Copyright (c) 2020 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

package converter

import (
	"reflect"
)

func pointerTo(val interface{}) reflect.Value {
	valPtr := reflect.New(reflect.TypeOf(val))
	valPtr.Elem().Set(reflect.ValueOf(val))
	return valPtr
}

func newOfSameType(val reflect.Value) reflect.Value {
	valType := val.Type().Elem()     // is value type (i.e. commonpb.WorkflowType)
	newValue := reflect.New(valType) // is of pointer type (i.e. *commonpb.WorkflowType)
	val.Set(newValue)                // set newly created value back to passed value
	return newValue
}

func isInterfaceNil(i interface{}) bool {
	v := reflect.ValueOf(i)
	return i == nil || (v.Kind() == reflect.Ptr && v.IsNil())
}