You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
143 lines
7.5 KiB
143 lines
7.5 KiB
using System;
|
|
using System.Reflection;
|
|
using System.Reflection.Emit;
|
|
using UnityEngine;
|
|
|
|
namespace IPA.Utilities
|
|
{
|
|
/// <summary>
|
|
/// A utility class providing reflection helper methods.
|
|
/// </summary>
|
|
public static partial class ReflectionUtil
|
|
{
|
|
internal static readonly FieldInfo DynamicMethodReturnType =
|
|
typeof(DynamicMethod).GetField("returnType", BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.DeclaredOnly);
|
|
|
|
/// <summary>
|
|
/// Sets a field on the target object, as gotten from <typeparamref name="T"/>.
|
|
/// </summary>
|
|
/// <typeparam name="T">the type to get the field from</typeparam>
|
|
/// <typeparam name="U">the type of the field to set</typeparam>
|
|
/// <param name="obj">the object instance</param>
|
|
/// <param name="fieldName">the field to set</param>
|
|
/// <param name="value">the value to set it to</param>
|
|
/// <exception cref="MissingFieldException">if <paramref name="fieldName"/> does not exist on <typeparamref name="T"/></exception>
|
|
/// <seealso cref="FieldAccessor{T, U}.Set(ref T, string, U)"/>
|
|
public static void SetField<T, U>(this T obj, string fieldName, U value)
|
|
=> FieldAccessor<T, U>.Set(ref obj, fieldName, value);
|
|
|
|
/// <summary>
|
|
/// Gets the value of a field.
|
|
/// </summary>
|
|
/// <typeparam name="T">the type to get the field from</typeparam>
|
|
/// <typeparam name="U">the type of the field (result casted)</typeparam>
|
|
/// <param name="obj">the object instance to pull from</param>
|
|
/// <param name="fieldName">the name of the field to read</param>
|
|
/// <returns>the value of the field</returns>
|
|
/// <exception cref="MissingFieldException">if <paramref name="fieldName"/> does not exist on <typeparamref name="T"/></exception>
|
|
/// <seealso cref="FieldAccessor{T, U}.Get(ref T, string)"/>
|
|
public static U GetField<U, T>(this T obj, string fieldName)
|
|
=> FieldAccessor<T, U>.Get(ref obj, fieldName);
|
|
|
|
/// <summary>
|
|
/// Sets a property on the target object, as gotten from <typeparamref name="T"/>.
|
|
/// </summary>
|
|
/// <typeparam name="T">the type to get the property from</typeparam>
|
|
/// <typeparam name="U">the type of the property to set</typeparam>
|
|
/// <param name="obj">the object instance</param>
|
|
/// <param name="propertyName">the property to set</param>
|
|
/// <param name="value">the value to set it to</param>
|
|
/// <exception cref="MissingMemberException">if <paramref name="propertyName"/> does not exist on <typeparamref name="T"/></exception>
|
|
/// <seealso cref="PropertyAccessor{T, U}.Set(ref T, string, U)"/>
|
|
public static void SetProperty<T, U>(this T obj, string propertyName, U value)
|
|
=> PropertyAccessor<T, U>.Set(ref obj, propertyName, value);
|
|
|
|
/// <summary>
|
|
/// Gets a property on the target object, as gotten from <typeparamref name="T"/>.
|
|
/// </summary>
|
|
/// <typeparam name="T">the type to get the property from</typeparam>
|
|
/// <typeparam name="U">the type of the property to get</typeparam>
|
|
/// <param name="obj">the object instance</param>
|
|
/// <param name="propertyName">the property to get</param>
|
|
/// <returns>the value of the property</returns>
|
|
/// <exception cref="MissingMemberException">if <paramref name="propertyName"/> does not exist on <typeparamref name="T"/></exception>
|
|
/// <seealso cref="PropertyAccessor{T, U}.Get(ref T, string)"/>
|
|
public static U GetProperty<U, T>(this T obj, string propertyName)
|
|
=> PropertyAccessor<T, U>.Get(ref obj, propertyName);
|
|
|
|
/// <summary>
|
|
/// Invokes a method from <typeparamref name="T"/> on an object.
|
|
/// </summary>
|
|
/// <typeparam name="U">the type of the property to get</typeparam>
|
|
/// <typeparam name="T">the type to search for the method on</typeparam>
|
|
/// <param name="obj">the object instance</param>
|
|
/// <param name="methodName">the method's name</param>
|
|
/// <param name="args">the method arguments</param>
|
|
/// <returns>the return value</returns>
|
|
/// <exception cref="MissingMethodException">if <paramref name="methodName"/> does not exist on <typeparamref name="T"/></exception>
|
|
public static U InvokeMethod<U, T>(this T obj, string methodName, params object[] args)
|
|
{
|
|
var dynMethod = typeof(T).GetMethod(methodName, BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance);
|
|
if (dynMethod == null) throw new MissingMethodException($"Method {methodName} does not exist", nameof(methodName));
|
|
return (U)dynMethod?.Invoke(obj, args);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Copies a component <paramref name="original"/> to a component of <paramref name="overridingType"/> on the destination <see cref="GameObject"/>.
|
|
/// </summary>
|
|
/// <param name="original">the original component</param>
|
|
/// <param name="overridingType">the new component's type</param>
|
|
/// <param name="destination">the destination GameObject</param>
|
|
/// <param name="originalTypeOverride">overrides the source component type (for example, to a superclass)</param>
|
|
/// <returns>the copied component</returns>
|
|
public static Component CopyComponent(this Component original, Type overridingType, GameObject destination, Type originalTypeOverride = null)
|
|
{
|
|
var copy = destination.AddComponent(overridingType);
|
|
var originalType = originalTypeOverride ?? original.GetType();
|
|
|
|
Type type = originalType;
|
|
while (type != typeof(MonoBehaviour))
|
|
{
|
|
CopyForType(type, original, copy);
|
|
type = type?.BaseType;
|
|
}
|
|
|
|
return copy;
|
|
}
|
|
|
|
/// <summary>
|
|
/// A generic version of <see cref="CopyComponent(Component, Type, GameObject, Type)"/>.
|
|
/// </summary>
|
|
/// <seealso cref="CopyComponent(Component, Type, GameObject, Type)"/>
|
|
/// <typeparam name="T">the overriding type</typeparam>
|
|
/// <param name="original">the original component</param>
|
|
/// <param name="destination">the destination game object</param>
|
|
/// <param name="originalTypeOverride">overrides the source component type (for example, to a superclass)</param>
|
|
/// <returns>the copied component</returns>
|
|
public static T CopyComponent<T>(this Component original, GameObject destination, Type originalTypeOverride = null)
|
|
where T : Component
|
|
{
|
|
var copy = destination.AddComponent<T>();
|
|
var originalType = originalTypeOverride ?? original.GetType();
|
|
|
|
Type type = originalType;
|
|
while (type != typeof(MonoBehaviour))
|
|
{
|
|
CopyForType(type, original, copy);
|
|
type = type?.BaseType;
|
|
}
|
|
|
|
return copy;
|
|
}
|
|
|
|
private static void CopyForType(Type type, Component source, Component destination)
|
|
{
|
|
FieldInfo[] myObjectFields = type.GetFields(BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance);
|
|
|
|
foreach (FieldInfo fi in myObjectFields)
|
|
{
|
|
fi.SetValue(destination, fi.GetValue(source));
|
|
}
|
|
}
|
|
}
|
|
}
|