internal ProxyBuilder(
ProxyAssembly assembly,
TypeBuilder tb,
[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicParameterlessConstructor)] Type proxyBaseType)
{
_assembly = assembly;
_tb = tb;
_proxyBaseType = proxyBaseType;
_fields = new List <FieldBuilder>();
_fields.Add(tb.DefineField("_methodInfos", typeof(MethodInfo[]), FieldAttributes.Private));
_methodInfos = new List <MethodInfo>();
_assembly.EnsureTypeIsVisible(proxyBaseType);
}
internal void AddInterfaceImpl(Type iface)
{
// If necessary, generate an attribute to permit visibility
// to internal types.
_assembly.EnsureTypeIsVisible(iface);
_tb.AddInterfaceImplementation(iface);
// AccessorMethods -> Metadata mappings.
var propertyMap = new Dictionary <MethodInfo, PropertyAccessorInfo>(MethodInfoEqualityComparer.Instance);
foreach (var pi in iface.GetRuntimeProperties())
{
var ai = new PropertyAccessorInfo(pi.GetMethod, pi.SetMethod);
if (pi.GetMethod != null)
{
propertyMap[pi.GetMethod] = ai;
}
if (pi.SetMethod != null)
{
propertyMap[pi.SetMethod] = ai;
}
}
var eventMap = new Dictionary <MethodInfo, EventAccessorInfo>(MethodInfoEqualityComparer.Instance);
foreach (var ei in iface.GetRuntimeEvents())
{
var ai = new EventAccessorInfo(ei.AddMethod, ei.RemoveMethod, ei.RaiseMethod);
if (ei.AddMethod != null)
{
eventMap[ei.AddMethod] = ai;
}
if (ei.RemoveMethod != null)
{
eventMap[ei.RemoveMethod] = ai;
}
if (ei.RaiseMethod != null)
{
eventMap[ei.RaiseMethod] = ai;
}
}
foreach (var mi in iface.GetRuntimeMethods())
{
// 排除静态方法
if (mi.IsStatic)
{
continue;
}
var mdb = AddMethodImpl(mi);
if (propertyMap.TryGetValue(mi, out var associatedProperty))
{
if (MethodInfoEqualityComparer.Instance.Equals(associatedProperty.InterfaceGetMethod, mi))
{
associatedProperty.GetMethodBuilder = mdb;
}
else
{
associatedProperty.SetMethodBuilder = mdb;
}
}
if (eventMap.TryGetValue(mi, out var associatedEvent))
{
if (MethodInfoEqualityComparer.Instance.Equals(associatedEvent.InterfaceAddMethod, mi))
{
associatedEvent.AddMethodBuilder = mdb;
}
else if (MethodInfoEqualityComparer.Instance.Equals(associatedEvent.InterfaceRemoveMethod, mi))
{
associatedEvent.RemoveMethodBuilder = mdb;
}
else
{
associatedEvent.RaiseMethodBuilder = mdb;
}
}
}
foreach (var pi in iface.GetRuntimeProperties())
{
var ai = propertyMap[pi.GetMethod ?? pi.SetMethod];
var pb = _tb.DefineProperty(pi.Name, pi.Attributes, pi.PropertyType, pi.GetIndexParameters().Select(p => p.ParameterType).ToArray());
if (ai.GetMethodBuilder != null)
{
pb.SetGetMethod(ai.GetMethodBuilder);
}
if (ai.SetMethodBuilder != null)
{
pb.SetSetMethod(ai.SetMethodBuilder);
}
}
foreach (var ei in iface.GetRuntimeEvents())
{
var ai = eventMap[ei.AddMethod ?? ei.RemoveMethod];
var eb = _tb.DefineEvent(ei.Name, ei.Attributes, ei.EventHandlerType);
if (ai.AddMethodBuilder != null)
{
eb.SetAddOnMethod(ai.AddMethodBuilder);
}
if (ai.RemoveMethodBuilder != null)
{
eb.SetRemoveOnMethod(ai.RemoveMethodBuilder);
}
if (ai.RaiseMethodBuilder != null)
{
eb.SetRaiseMethod(ai.RaiseMethodBuilder);
}
}
}
internal void AddInterfaceImpl([DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.All)] Type iface)
{
// If necessary, generate an attribute to permit visibility
// to internal types.
_assembly.EnsureTypeIsVisible(iface);
_tb.AddInterfaceImplementation(iface);
// AccessorMethods -> Metadata mappings.
var propertyMap = new Dictionary <MethodInfo, PropertyAccessorInfo>();
foreach (PropertyInfo pi in iface.GetRuntimeProperties())
{
var ai = new PropertyAccessorInfo(pi.GetMethod, pi.SetMethod);
if (pi.GetMethod != null)
{
propertyMap[pi.GetMethod] = ai;
}
if (pi.SetMethod != null)
{
propertyMap[pi.SetMethod] = ai;
}
}
var eventMap = new Dictionary <MethodInfo, EventAccessorInfo>();
foreach (EventInfo ei in iface.GetRuntimeEvents())
{
var ai = new EventAccessorInfo(ei.AddMethod, ei.RemoveMethod, ei.RaiseMethod);
if (ei.AddMethod != null)
{
eventMap[ei.AddMethod] = ai;
}
if (ei.RemoveMethod != null)
{
eventMap[ei.RemoveMethod] = ai;
}
if (ei.RaiseMethod != null)
{
eventMap[ei.RaiseMethod] = ai;
}
}
foreach (MethodInfo mi in iface.GetRuntimeMethods())
{
// Skip regular/non-virtual instance methods, static methods, and methods that cannot be overriden
// ("methods that cannot be overriden" includes default implementation of other interface methods).
if (!mi.IsVirtual || mi.IsFinal)
{
continue;
}
int methodInfoIndex = _methodInfos.Count;
_methodInfos.Add(mi);
MethodBuilder mdb = AddMethodImpl(mi, methodInfoIndex);
if (propertyMap.TryGetValue(mi, out PropertyAccessorInfo? associatedProperty))
{
if (mi.Equals(associatedProperty.InterfaceGetMethod))
{
associatedProperty.GetMethodBuilder = mdb;
}
else
{
associatedProperty.SetMethodBuilder = mdb;
}
}
if (eventMap.TryGetValue(mi, out EventAccessorInfo? associatedEvent))
{
if (mi.Equals(associatedEvent.InterfaceAddMethod))
{
associatedEvent.AddMethodBuilder = mdb;
}
else if (mi.Equals(associatedEvent.InterfaceRemoveMethod))
{
associatedEvent.RemoveMethodBuilder = mdb;
}
else
{
associatedEvent.RaiseMethodBuilder = mdb;
}
}
}
foreach (PropertyInfo pi in iface.GetRuntimeProperties())
{
PropertyAccessorInfo ai = propertyMap[pi.GetMethod ?? pi.SetMethod !];