mirror of
https://gitee.com/fudiwei/DotNetCore.SKIT.FlurlHttpClient.Wechat.git
synced 2025-12-29 18:04:42 +08:00
262 lines
11 KiB
C#
262 lines
11 KiB
C#
using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.Linq;
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using System.Linq.Expressions;
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using System.Reflection;
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using System.Runtime.CompilerServices;
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namespace SKIT.FlurlHttpClient.Wechat.TenpayV3.Utilities
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{
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internal static partial class ReflectionHelper
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{
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public static void ReplaceObjectStringProperties(object targetObj, ReplaceObjectStringPropertiesReplacementDelegate replacement)
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{
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if (targetObj is null) throw new ArgumentNullException(nameof(targetObj));
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if (replacement is null) throw new ArgumentNullException(nameof(replacement));
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ISet<object> visited = new HashSet<object>(ReferenceEqualityComparer.Instance); // 处理循环引用问题
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InnerReplaceObjectStringProperties(ref targetObj, null, replacement, visited);
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}
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}
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partial class ReflectionHelper
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{
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public delegate (bool IsModified, string NewValue) ReplaceObjectStringPropertiesReplacementDelegate(object currentObj, PropertyInfo? currentProp, string oldValue);
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private static void InnerReplaceObjectStringProperties(ref object currentObj, PropertyInfo? currentProp, ReplaceObjectStringPropertiesReplacementDelegate replacement, ISet<object> visited)
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{
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if (currentObj is null) throw new ArgumentNullException(nameof(currentObj));
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if (replacement is null) throw new ArgumentNullException(nameof(replacement));
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if (!visited.Add(currentObj)) return;
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Type type = currentObj.GetType();
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// 跳过基元类型、枚举类型、抽象或接口类型，及部分 CLR 内置类型
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if (type.IsPrimitive ||
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type.IsEnum ||
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type.IsAbstract ||
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type.IsInterface ||
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type == typeof(Guid) ||
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type == typeof(DateTime) ||
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type == typeof(DateTimeOffset) ||
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#if NET5_0_OR_GREATER
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type == typeof(DateOnly) ||
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type == typeof(TimeOnly) ||
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#endif
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type == typeof(TimeSpan))
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{
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return;
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}
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// 处理数组类型
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if (type.IsArray)
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{
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Array currentObjAsArray = (Array)currentObj;
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for (int i = 0; i < currentObjAsArray.Length; i++)
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{
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object? element = currentObjAsArray.GetValue(i);
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if (element is null)
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continue;
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Type elementType = element.GetType();
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if (elementType == typeof(string))
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{
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if (currentObjAsArray.IsReadOnly)
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continue;
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if ((string)element == string.Empty)
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continue;
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var res = replacement(currentObjAsArray, currentProp, (string)element);
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if (res.IsModified)
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currentObjAsArray.SetValue(res.NewValue, i);
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}
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else
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{
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InnerReplaceObjectStringProperties(ref element, currentProp, replacement, visited);
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}
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}
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return;
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}
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// 处理列表类型
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if (currentObj is IList)
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{
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IList currentObjAsList = (IList)currentObj;
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for (int i = 0; i < currentObjAsList.Count; i++)
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{
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object? element = currentObjAsList[i];
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if (element is null)
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continue;
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Type elementType = element.GetType();
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if (elementType == typeof(string))
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{
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if (currentObjAsList.IsReadOnly)
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continue;
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if ((string)element == string.Empty)
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continue;
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var res = replacement(currentObjAsList, currentProp, (string)element);
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if (res.IsModified)
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currentObjAsList[i] = res.NewValue;
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}
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else
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{
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InnerReplaceObjectStringProperties(ref element, currentProp, replacement, visited);
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}
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}
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return;
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}
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// 处理字典类型
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if (currentObj is IDictionary)
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{
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IDictionary currentObjAsDictionary = (IDictionary)currentObj;
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foreach (DictionaryEntry entry in currentObjAsDictionary)
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{
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object? entryValue = entry.Value;
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if (entryValue is null)
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continue;
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Type entryValueType = entryValue.GetType();
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if (entryValueType == typeof(string))
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{
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if (currentObjAsDictionary.IsReadOnly)
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continue;
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if ((string)entryValue == string.Empty)
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continue;
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var res = replacement(currentObjAsDictionary, currentProp, (string)entryValue);
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if (res.IsModified)
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currentObjAsDictionary[entry.Key] = res.NewValue;
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}
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else
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{
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InnerReplaceObjectStringProperties(ref entryValue, currentProp, replacement, visited);
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}
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}
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return;
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}
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// 遍历属性
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foreach (PropertyInfo property in GetWritableProperties(type))
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{
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Type propertyType = property.PropertyType;
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if (propertyType == typeof(string))
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{
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string? propertyValue = GetPropertyValue<string>(currentObj, property);
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if (propertyValue is null || propertyValue == string.Empty)
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continue;
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var res = replacement(currentObj, property, propertyValue);
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if (res.IsModified)
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SetPropertyValue(currentObj, property, res.NewValue);
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}
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else
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{
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object? propertyValue = GetPropertyValue<object>(currentObj, property);
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if (propertyValue is null)
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continue;
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InnerReplaceObjectStringProperties(ref propertyValue, property, replacement, visited);
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}
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}
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}
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}
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partial class ReflectionHelper
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{
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private static readonly IDictionary<Type, PropertyInfo[]> _propsCache = new Dictionary<Type, PropertyInfo[]>(capacity: 128);
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private static readonly Hashtable _getterCache = new Hashtable(capacity: 128);
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private static readonly Hashtable _setterCache = new Hashtable(capacity: 128);
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private static PropertyInfo[] GetWritableProperties(Type type)
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{
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if (type is null) throw new ArgumentNullException(nameof(type));
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if (!_propsCache.TryGetValue(type, out PropertyInfo[]? properties))
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{
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properties = type.GetProperties(BindingFlags.Instance | BindingFlags.Public)
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.Where(e => e.CanRead && e.CanWrite)
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.ToArray();
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_propsCache[type] = properties;
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}
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return properties;
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}
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private static T? GetPropertyValue<T>(object targetObj, PropertyInfo property)
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{
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// 提供比 PropertyInfo.GetValue() 更快的属性取值方法
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// 只可针对热点类型使用，否则可能会更慢
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if (targetObj is null) throw new ArgumentNullException(nameof(targetObj));
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if (property is null) throw new ArgumentNullException(nameof(property));
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if (!property.CanRead)
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throw new InvalidOperationException($"Property '{property.Name}' of type '{typeof(T).FullName}' does not have a getter.");
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Func<object, T>? getter = _getterCache[property] as Func<object, T>;
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if (getter is null)
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{
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ParameterExpression targetExpr = Expression.Parameter(typeof(object));
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UnaryExpression castTargetExpr = Expression.Convert(targetExpr, targetObj.GetType());
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MemberExpression getPropertyValueExpr = Expression.Property(castTargetExpr, property);
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UnaryExpression castPropertyValueExpr = Expression.Convert(getPropertyValueExpr, typeof(T));
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getter = Expression.Lambda<Func<object, T>>(castPropertyValueExpr, targetExpr).Compile();
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_getterCache[property] = getter;
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}
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return getter.Invoke(targetObj);
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}
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private static void SetPropertyValue<T>(object targetObj, PropertyInfo property, T? value)
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{
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// 提供比 PropertyInfo.SetValue() 更快的属性赋值方法
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// 只可针对热点类型使用，否则可能会更慢
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if (targetObj is null) throw new ArgumentNullException(nameof(targetObj));
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if (property is null) throw new ArgumentNullException(nameof(property));
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if (!property.CanWrite)
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throw new InvalidOperationException($"Property '{property.Name}' of type '{typeof(T).FullName}' does not have a setter.");
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Action<object, T?>? setter = _setterCache[property] as Action<object, T?>;
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if (setter is null)
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{
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ParameterExpression targetExpr = Expression.Parameter(typeof(object));
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ParameterExpression propertyValueExpr = Expression.Parameter(typeof(T));
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UnaryExpression castTargetExpr = Expression.Convert(targetExpr, targetObj.GetType());
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UnaryExpression castPropertyValueExpr = Expression.Convert(propertyValueExpr, property.PropertyType);
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MethodCallExpression setPropertyValueExpr = Expression.Call(castTargetExpr, property.GetSetMethod()!, castPropertyValueExpr);
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setter = Expression.Lambda<Action<object, T?>>(setPropertyValueExpr, targetExpr, propertyValueExpr).Compile();
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_setterCache[property] = setter;
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}
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setter.Invoke(targetObj, value);
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}
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}
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partial class ReflectionHelper
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{
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#if NET5_0_OR_GREATER
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#else
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private sealed class ReferenceEqualityComparer : IEqualityComparer<object?>, IEqualityComparer
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{
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public static ReferenceEqualityComparer Instance { get; } = new ReferenceEqualityComparer();
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private ReferenceEqualityComparer() { }
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public new bool Equals(object? x, object? y) => ReferenceEquals(x, y);
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public int GetHashCode(object? obj) => RuntimeHelpers.GetHashCode(obj!);
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}
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#endif
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}
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}
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