/// <summary>
/// Initializes a new instance of the <see cref="EventEmitter"/> class.
/// </summary>
/// <param name="parent">The parent.</param>
/// <param name="evt">The evt.</param>
public EventEmitter(TypeEmitter parent, EventReference evt)
{
Parent = parent;
Target = evt as EventDefinition ?? evt.Resolve();
if (Target.AddMethod != null)
{
add = new MethodEmitter(parent, Target.AddMethod);
}
else
{
var existing = parent.Target.GetMethod($"add_{Target.Name}", parent.Context.Module.TypeSystem.Void, new[] { evt.EventType }, new GenericParameter[0]);
if (existing != null)
{
Target.AddMethod = existing.Resolve();
add = new MethodEmitter(parent, Target.AddMethod);
}
}
if (Target.RemoveMethod != null)
{
remove = new MethodEmitter(parent, Target.RemoveMethod);
}
else
{
var existing = parent.Target.GetMethod($"remove_{Target.Name}", parent.Context.Module.TypeSystem.Void, new[] { evt.EventType }, new GenericParameter[0]);
if (existing != null)
{
Target.RemoveMethod = existing.Resolve();
remove = new MethodEmitter(parent, Target.RemoveMethod);
}
}
}
public MemberIdentifier(ITypeInfoSource ti, EventReference er)
{
Type = MemberType.Event;
Name = er.Name;
ReturnType = er.EventType;
GenericArgumentCount = 0;
ParameterTypes = null;
ti.CacheProxyNames(er);
var ed = er.Resolve();
if (ed != null)
{
if (ed.AddMethod != null)
{
IsStatic = ed.AddMethod.IsStatic;
}
else if (ed.RemoveMethod != null)
{
IsStatic = ed.RemoveMethod.IsStatic;
}
else
{
// FIXME
IsStatic = false;
}
}
else
{
// FIXME
IsStatic = false;
}
HashCode = Type.GetHashCode() ^ Name.GetHashCode();
}
static MethodAttributes GetEvtVisibility(EventReference evt)
{
MethodAttributes ret = MethodAttributes.Public;
EventDefinition Definition = evt.Resolve();
if (Definition != null)
{
MethodReference addMethod = Definition.AddMethod;
MethodDefinition addDecl = (addMethod == null) ? null : addMethod.Resolve();
MethodReference removeMethod = Definition.RemoveMethod;
MethodDefinition removeDecl = (removeMethod == null) ? null : removeMethod.Resolve();
MethodReference invokeMethod = Definition.InvokeMethod;
MethodDefinition invokeDecl = (invokeMethod == null) ? null : invokeMethod.Resolve();
if (((addDecl != null) && (removeDecl != null)) && (invokeDecl != null))
{
if (((addDecl.Attributes & MethodAttributes.MemberAccessMask) == (removeDecl.Attributes & MethodAttributes.MemberAccessMask)) && ((addDecl.Attributes & MethodAttributes.MemberAccessMask) == (invokeDecl.Attributes & MethodAttributes.MemberAccessMask)))
{
return(addDecl.Attributes & MethodAttributes.MemberAccessMask);
}
}
else if ((addDecl != null) && (removeDecl != null))
{
if ((addDecl.Attributes & MethodAttributes.MemberAccessMask) == (removeDecl.Attributes & MethodAttributes.MemberAccessMask))
{
return(addDecl.Attributes & MethodAttributes.MemberAccessMask);
}
}
else if ((addDecl != null) && (invokeDecl != null))
{
if ((addDecl.Attributes & MethodAttributes.MemberAccessMask) == (invokeDecl.Attributes & MethodAttributes.MemberAccessMask))
{
return(addDecl.Attributes & MethodAttributes.MemberAccessMask);
}
}
else if ((removeDecl != null) && (invokeDecl != null))
{
if ((removeDecl.Attributes & MethodAttributes.MemberAccessMask) == (invokeDecl.Attributes & MethodAttributes.MemberAccessMask))
{
return(removeDecl.Attributes & MethodAttributes.MemberAccessMask);
}
}
else
{
if (addDecl != null)
{
return(addDecl.Attributes & MethodAttributes.MemberAccessMask);
}
if (removeDecl != null)
{
return(removeDecl.Attributes & MethodAttributes.MemberAccessMask);
}
if (invokeDecl != null)
{
return(invokeDecl.Attributes & MethodAttributes.MemberAccessMask);
}
}
}
return(ret);
}
public void Collect(EventReference evet)
{
EventDefinition def;
if ((def = evet as EventDefinition ?? evet.Resolve()) != null)
{
Collect(def);
}
}
protected virtual string GetEventName(EventReference @event)
{
EventDefinition eventDefinition = @event.Resolve();
if (eventDefinition != null && eventDefinition.Module.FilePath == this.ModuleContext.Module.FilePath)
{
return(this.ModuleContext.RenamedMembersMap[eventDefinition.MetadataToken.ToUInt32()]);
}
return(Utilities.EscapeNameIfNeeded(GenericHelper.GetNonGenericName(@event.Name), this.Language));
}
public static EventDefinition TryResolve(this EventReference r)
{
try
{
return(r.Resolve());
}
catch (Exception)
{
return(null);
}
}
static bool IsStatic(EventReference prop)
{
bool flag = false;
EventDefinition Definition = prop.Resolve();
if (Definition != null)
{
MethodReference addMethod = Definition.AddMethod;
MethodDefinition addDecl = (addMethod == null) ? null : addMethod.Resolve();
MethodReference removeMethod = Definition.RemoveMethod;
MethodDefinition removeDecl = (removeMethod == null) ? null : removeMethod.Resolve();
MethodReference invokeMethod = Definition.InvokeMethod;
MethodDefinition invokeDecl = (invokeMethod == null) ? null : invokeMethod.Resolve();
flag |= (addDecl != null) && addDecl.IsStatic;
flag |= (removeDecl != null) && removeDecl.IsStatic;
flag |= (invokeDecl != null) && invokeDecl.IsStatic;
}
return(flag);
}
/// <summary>
/// Mark all eachable items in argument as such.
/// </summary>
private static void Walk(ReachableContext context, EventReference evt)
{
// Type
evt.EventType.MarkReachable(context);
var evtDef = evt as EventDefinition;
if (evtDef != null)
{
evtDef.AddMethod.MarkReachable(context);
evtDef.RemoveMethod.MarkReachable(context);
evtDef.InvokeMethod.MarkReachable(context);
// Custom attributes
Walk(context, (ICustomAttributeProvider)evtDef);
}
else
{
// Try to resolve
evt.Resolve(context).MarkReachable(context);
}
}
/// <summary>
/// Weave an implementation of an event against the provided type.
/// </summary>
/// <param name="emitter">The emitter.</param>
/// <param name="field">The attribute field.</param>
/// <param name="evt">The event.</param>
/// <param name="interfaceType">The type of the interface.</param>
public void WeaveImplementedEvent(TypeEmitter emitter, Variable field, EventReference evt, TypeDefinition interfaceType)
{
var implemented = field.Type.GetEvent(evt.Name, evt.EventType);
if (implemented == null)
{
implemented = field.Type.GetEvent($"{interfaceType.FullName}.{evt.Name}", evt.EventType);
if (implemented == null)
{
throw new MissingMemberException($"Cannot implement '{field.Type.FullName}' as it does not implement event '{evt.Name}'");
}
}
var emitted = emitter.EmitEvent(evt.Name, implemented.EventType);
var definition = evt.Resolve() ?? implemented.Resolve();
var hasAdd = emitted.HasAdd;
var add = emitted.GetAdd();
if (!hasAdd)
{
add.Body.SimplifyMacros();
var ail = add.GetIL();
var interfaceAdd = definition.AddMethod.Import();
ail.Emit(Codes.Nop);
ail.Emit(Codes.ThisIf(field));
ail.Emit(Codes.Load(field));
ail.Emit(Codes.Arg(add.IsStatic ? 0 : 1));
ail.Emit(Codes.Invoke(interfaceAdd.GetGeneric()));
ail.Emit(Codes.Return);
add.Body.OptimizeMacros();
}
add.Body.InitLocals = true;
var hasRemove = emitted.HasRemove;
var remove = emitted.GetRemove();
if (!emitted.HasRemove)
{
remove.Body.SimplifyMacros();
var ril = remove.GetIL();
var interfaceRemove = definition.RemoveMethod.Import();
ril.Emit(Codes.Nop);
ril.Emit(Codes.ThisIf(field));
ril.Emit(Codes.Load(field));
ril.Emit(Codes.Arg(remove.IsStatic ? 0 : 1));
ril.Emit(Codes.Invoke(interfaceRemove.GetGeneric()));
ril.Emit(Codes.Return);
remove.Body.OptimizeMacros();
}
remove.Body.InitLocals = true;
}
/// <summary>
/// A cecil event reference will be directed to this method.
/// </summary>
/// <param name="item">Cecil reference.</param>
/// <param name="resolvedItem">Output parameter that will be populated with the resolved cecil definition.</param>
/// <returns><c>true</c></returns>
private static bool TryResolve(EventReference item, out object resolvedItem)
{
resolvedItem = item.Resolve();
return(true);
}
