public DTOProperty(PropertyInfo info, FastPropertySetHandler handler)
: this()
{
Info = info;
Handler = handler;
Name = info.Name;
}
public static FastPropertySetHandler GetPropertySetter(PropertyInfo propInfo)
{
lock (dictSetter)
{
if (dictSetter.ContainsKey(propInfo))
{
return((FastPropertySetHandler)dictSetter[propInfo]);
}
DynamicMethod dynamicMethod = new DynamicMethod(string.Empty, null, new Type[] { typeof(object), typeof(object) }, propInfo.DeclaringType.Module);
ILGenerator ilGenerator = dynamicMethod.GetILGenerator();
ilGenerator.Emit(OpCodes.Ldarg_0);
ilGenerator.Emit(OpCodes.Ldarg_1);
EmitCastToReference(ilGenerator, propInfo.PropertyType);
ilGenerator.EmitCall(OpCodes.Callvirt, propInfo.GetSetMethod(), null);
ilGenerator.Emit(OpCodes.Ret);
FastPropertySetHandler setter = (FastPropertySetHandler)dynamicMethod.CreateDelegate(typeof(FastPropertySetHandler));
dictSetter.Add(propInfo, setter);
return(setter);
}
}
public static FastPropertySetHandler GetPropertySetter(PropertyInfo propInfo)
{
// generates a dynamic method to generate a FastPropertySetHandler delegate
DynamicMethod dynamicMethod = new DynamicMethod(string.Empty, null, new Type[] { typeof(object), typeof(object) }, propInfo.DeclaringType.Module);
ILGenerator ilGenerator = dynamicMethod.GetILGenerator();
// loads the object into the stack
ilGenerator.Emit(OpCodes.Ldarg_0);
// loads the parameter from the stack
ilGenerator.Emit(OpCodes.Ldarg_1);
// cast to the proper type (unboxing if needed)
EmitCastToReference(ilGenerator, propInfo.PropertyType);
// calls the setter
ilGenerator.EmitCall(OpCodes.Callvirt, propInfo.GetSetMethod(), null);
// terminates the call
ilGenerator.Emit(OpCodes.Ret);
// converts the DynamicMethod to a FastPropertyGetHandler delegate to get the property
FastPropertySetHandler setter = (FastPropertySetHandler)dynamicMethod.CreateDelegate(typeof(FastPropertySetHandler));
return(setter);
}
/// <summary>
/// 设置属性值
/// </summary>
/// <param name="obj"></param>
/// <param name="property"></param>
/// <param name="value"></param>
public static void SetPropertyValue(object obj, PropertyInfo property, object value)
{
if (property.CanWrite)
{
FastPropertySetHandler propertySetter = DynamicCalls.GetPropertySetter(property);
value = ConvertValue(property.PropertyType, value);
propertySetter(obj, value);
}
}
public void GetPropertySetterTest()
{
PropertyInfo propInfo = null; // TODO: 初始化为适当的值
FastPropertySetHandler expected = null; // TODO: 初始化为适当的值
FastPropertySetHandler actual;
actual = DynamicCalls.GetPropertySetter(propInfo);
Assert.AreEqual(expected, actual);
Assert.Inconclusive("验证此测试方法的正确性。");
}
public PropertyHandler(PropertyInfo property)
{
if (property.CanWrite)
{
this.mSetValue = DynamicCalls.GetPropertySetter(property);
}
if (property.CanRead)
{
this.mGetValue = DynamicCalls.GetPropertyGetter(property);
}
this.mProperty = property;
}
public PropertyHandler(PropertyInfo property)
{
if (property.CanWrite)
{
this.mSetValue = DynamicCalls.GetPropertySetter(property);
}
if (property.CanRead)
{
this.mGetValue = DynamicCalls.GetPropertyGetter(property);
}
this.mProperty = property;
}
/// <summary>
/// 快速设置属性值
/// </summary>
/// <param name="obj"></param>
/// <param name="property"></param>
/// <param name="value"></param>
public static void SetPropertyValue(object obj, PropertyInfo property, object value)
{
if (!property.CanWrite)
{
return;
}
try
{
FastPropertySetHandler setter = DynamicCalls.GetPropertySetter(property);
value = ConvertValue(property.PropertyType, value);
setter(obj, value);
}
catch (Exception ex)
{
throw ex;
}
}
public DTOProperty(PropertyInfo info, FastPropertySetHandler handler, FastPropertyGetHandler getHandler)
: this(info, handler)
{
GetHandler = getHandler;
}
