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109 lines
4.4 KiB
109 lines
4.4 KiB
using System;
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using System.Reflection;
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using UnityEngine;
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namespace IllusionPlugin.Utils
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{
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/// <summary>
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/// A utility class providing reflection helper methods.
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/// </summary>
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public static class ReflectionUtil
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{
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/// <summary>
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/// Sets a (potentially) private field on the target object.
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/// </summary>
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/// <param name="obj">the object instance</param>
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/// <param name="fieldName">the field to set</param>
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/// <param name="value">the value to set it to</param>
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public static void SetPrivateField(this object obj, string fieldName, object value)
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{
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var prop = obj.GetType().GetField(fieldName, BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance);
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prop.SetValue(obj, value);
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}
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/// <summary>
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/// Gets the value of a (potentially) private field.
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/// </summary>
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/// <typeparam name="T">the type of te field (result casted)</typeparam>
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/// <param name="obj">the object instance to pull from</param>
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/// <param name="fieldName">the name of the field to read</param>
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/// <returns>the value of the field</returns>
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public static T GetPrivateField<T>(this object obj, string fieldName)
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{
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var prop = obj.GetType().GetField(fieldName, BindingFlags.NonPublic | BindingFlags.Instance);
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var value = prop.GetValue(obj);
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return (T) value;
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}
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/// <summary>
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/// Sets a (potentially) private propert on the target object.
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/// </summary>
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/// <param name="obj">the target object instance</param>
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/// <param name="propertyName">the name of the property</param>
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/// <param name="value">the value to set it to</param>
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public static void SetPrivateProperty(this object obj, string propertyName, object value)
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{
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var prop = obj.GetType()
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.GetProperty(propertyName, BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance);
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prop.SetValue(obj, value, null);
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}
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/// <summary>
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/// Invokes a (potentially) private method.
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/// </summary>
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/// <param name="obj">the object to call from</param>
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/// <param name="methodName">the method name</param>
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/// <param name="methodParams">the method parameters</param>
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/// <returns>the return value</returns>
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public static object InvokePrivateMethod(this object obj, string methodName, params object[] methodParams)
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{
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MethodInfo dynMethod = obj.GetType().GetMethod(methodName, BindingFlags.NonPublic | BindingFlags.Instance);
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return dynMethod.Invoke(obj, methodParams);
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}
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/// <summary>
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/// Invokes a (potentially) private method.
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/// </summary>
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/// <typeparam name="T">the return type</typeparam>
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/// <param name="obj">the object to call from</param>
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/// <param name="methodName">the method name to call</param>
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/// <param name="methodParams">the method's parameters</param>
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/// <returns>the return value</returns>
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public static T InvokePrivateMethod<T>(this object obj, string methodName, params object[] methodParams)
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{
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return (T)InvokePrivateMethod(obj, methodName, methodParams);
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}
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/// <summary>
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/// Copies a component of type originalType to a component of overridingType on the destination GameObject.
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/// </summary>
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/// <param name="original">the original component</param>
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/// <param name="originalType">the original component's type</param>
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/// <param name="overridingType">the new component's type</param>
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/// <param name="destination">the destination GameObject</param>
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/// <returns></returns>
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public static Component CopyComponent(Component original, Type originalType, Type overridingType, GameObject destination)
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{
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var copy = destination.AddComponent(overridingType);
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Type type = originalType;
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while (type != typeof(MonoBehaviour))
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{
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CopyForType(type, original, copy);
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type = type.BaseType;
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}
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return copy;
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}
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private static void CopyForType(Type type, Component source, Component destination)
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{
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FieldInfo[] myObjectFields = type.GetFields(BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance | BindingFlags.GetField);
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foreach (FieldInfo fi in myObjectFields)
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{
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fi.SetValue(destination, fi.GetValue(source));
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}
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}
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}
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}
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