public override bool IsApplied(BuildContext context, AbstractTypeBuilderList builders)
{
if (_interceptorType == null && _interceptType == 0)
return false;
foreach (IAbstractTypeBuilder builder in builders)
{
InterceptorAspectBuilder interceptor = builder as InterceptorAspectBuilder;
if (interceptor != null)
{
if (interceptor._interceptorType == null && interceptor._interceptType == 0)
return false;
if (builder == this)
break;
}
}
if (context.IsMethodOrProperty) switch (context.Step)
{
case BuildStep.Begin: return true;
case BuildStep.Before: return (_interceptType & InterceptType.BeforeCall) != 0;
case BuildStep.After: return (_interceptType & InterceptType.AfterCall) != 0;
case BuildStep.Catch: return (_interceptType & InterceptType.OnCatch) != 0;
case BuildStep.Finally: return (_interceptType & InterceptType.OnFinally) != 0;
case BuildStep.End: return true;
}
return false;
}
public override bool IsCompatible(BuildContext context, IAbstractTypeBuilder typeBuilder)
{
if (typeBuilder is PropertyChangedBuilder)
return false;
return base.IsCompatible(context, typeBuilder);
}
public override bool IsApplied(BuildContext context, AbstractTypeBuilderList builders)
{
if (context.IsBuildStep)
{
if (context.IsAbstractMethod)
{
// Give up if there is any builder that builds the method body.
//
if (builders.Count > 1)
foreach (IAbstractTypeBuilder builder in builders)
if (builder != this && builder.IsApplied(context, builders))
return false;
return true;
}
// Treat an abstract getter/setter as a regular method
// when the property has [NoInstance] attribute
//
if (context.IsAbstractGetter || context.IsAbstractSetter)
return context.CurrentProperty.IsDefined(typeof(NoInstanceAttribute), true);
}
return false;
}
public override void Build(BuildContext context)
{
Context = context;
FieldBuilder methodInfo = Context.CreatePrivateStaticField(
"_methodInfo$ClearCacheAspect$" + ++_methodCounter, typeof(MethodInfo));
EmitHelper emit = Context.MethodBuilder.Emitter;
Label checkMethodInfo = emit.DefineLabel();
emit
.ldsfld (methodInfo)
.brtrue_s (checkMethodInfo)
.ldarg_0
.LoadType (_declaringType)
.ldstr (_methodName)
;
if (_parameterTypes == null || _parameterTypes.Length == 0)
{
emit.ldnull.end();
}
else
{
LocalBuilder field = emit.DeclareLocal(typeof(Type[]));
emit
.ldc_i4_ (_parameterTypes.Length)
.newarr (typeof(Type))
.stloc (field)
;
for (int i = 0; i < _parameterTypes.Length; i++)
{
emit
.ldloc (field)
.ldc_i4 (i)
.LoadType (_parameterTypes[i])
.stelem_ref
.end()
;
}
emit.ldloc(field);
}
emit
.call (typeof(ClearCacheAspect), "GetMethodInfo", typeof(object), typeof(Type), typeof(string), typeof(Type[]))
.stsfld (methodInfo)
.MarkLabel (checkMethodInfo)
.ldsfld (methodInfo)
.call (typeof(CacheAspect), "ClearCache", typeof(MethodInfo))
;
}
public override bool IsApplied(BuildContext context, AbstractTypeBuilderList builders)
{
if (context == null) throw new ArgumentNullException("context");
return
base.IsApplied(context, builders) &&
context.CurrentProperty != null &&
context.CurrentProperty.GetIndexParameters().Length == 0 &&
(PropertyType == null ||
TypeHelper.IsSameOrParent(PropertyType, context.CurrentProperty.PropertyType));
}
public override bool IsApplied(BuildContext context, AbstractTypeBuilderList builders)
{
if (context == null) throw new ArgumentNullException("context");
if (context.IsAbstractProperty && context.IsBeforeOrBuildStep)
{
return context.CurrentProperty.GetIndexParameters().Length <= 1;
}
return context.BuildElement == BuildElement.Type && context.IsAfterStep;
}
public override bool IsCompatible(BuildContext context, IAbstractTypeBuilder typeBuilder)
{
if (context.IsBuildStep)
return false;
AbstractTypeBuilderList list = new AbstractTypeBuilderList(2);
list.Add(this);
list.Add(typeBuilder);
BuildStep step = context.Step;
try
{
context.Step = BuildStep.Build;
return typeBuilder.IsApplied(context, list);
}
finally
{
context.Step = step;
}
}
public override bool IsApplied(BuildContext context, AbstractTypeBuilderList builders)
{
if (context == null) throw new ArgumentNullException("context");
return context.BuildElement == BuildElement.AbstractMethod;
}
public override int GetPriority(BuildContext context)
{
return TypeBuilderConsts.Priority.AsyncAspect;
}
private static Type EnsureDelegateType(BuildContext context, MethodInfo method)
{
// The delegate should be defined as inner type of context.TypeBuilder.
// It's possible, but we can not define and use newly defined type as Emit target in its owner type.
// To solve this problem, we should create a top level delegate and make sure its name is unique.
//
string delegateName = context.TypeBuilder.TypeBuilder.FullName + "$" + method.Name + "$Delegate";
Type delegateType = (Type) context.Items[delegateName];
if (delegateType == null)
{
ParameterInfo[] pi = method.GetParameters();
Type[] parameters = new Type[pi.Length];
for (int i = 0; i < pi.Length; i++)
parameters[i] = pi[i].ParameterType;
const MethodImplAttributes mia = MethodImplAttributes.Runtime | MethodImplAttributes.Managed;
const MethodAttributes ma = MethodAttributes.Public | MethodAttributes.HideBySig | MethodAttributes.NewSlot | MethodAttributes.Virtual;
TypeBuilderHelper delegateBuilder = context.AssemblyBuilder.DefineType(delegateName,
TypeAttributes.Class | TypeAttributes.NotPublic | TypeAttributes.Sealed | TypeAttributes.AnsiClass | TypeAttributes.AutoClass,
typeof(MulticastDelegate));
// Create constructor
//
ConstructorBuilderHelper ctorBuilder = delegateBuilder.DefineConstructor(
MethodAttributes.Public | MethodAttributes.HideBySig | MethodAttributes.RTSpecialName, CallingConventions.Standard,
typeof(object), typeof(IntPtr));
ctorBuilder.ConstructorBuilder.SetImplementationFlags(mia);
MethodBuilderHelper methodBuilder;
// Define the BeginInvoke method for the delegate
//
Type[] beginParameters = new Type[parameters.Length + 2];
Array.Copy(parameters, 0, beginParameters, 0, parameters.Length);
beginParameters[parameters.Length] = typeof(AsyncCallback);
beginParameters[parameters.Length+1] = typeof(object);
methodBuilder = delegateBuilder.DefineMethod("BeginInvoke", ma, typeof(IAsyncResult), beginParameters);
methodBuilder.MethodBuilder.SetImplementationFlags(mia);
// Define the EndInvoke method for the delegate
//
methodBuilder = delegateBuilder.DefineMethod("EndInvoke", ma, method.ReturnType, typeof(IAsyncResult));
methodBuilder.MethodBuilder.SetImplementationFlags(mia);
// Define the Invoke method for the delegate
//
methodBuilder = delegateBuilder.DefineMethod("Invoke", ma, method.ReturnType, parameters);
methodBuilder.MethodBuilder.SetImplementationFlags(mia);
context.Items[delegateName] = delegateType = delegateBuilder.Create();
}
return delegateType;
}
public override int GetPriority(BuildContext context)
{
return TypeBuilderConsts.Priority.PropChange;
}
public override bool IsApplied(BuildContext context, AbstractTypeBuilderList builders)
{
return context.BuildElement == BuildElement.InterfaceMethod;
}
public virtual int GetPriority(BuildContext context)
{
return TypeBuilderConsts.Priority.Normal;
}
public override bool IsApplied(BuildContext context, AbstractTypeBuilderList builders)
{
if (context == null) throw new ArgumentNullException("context");
return context.IsFinallyStep && context.IsMethodOrProperty;
}
public override int GetPriority(BuildContext context)
{
return _priority;
}
public override bool IsApplied(BuildContext context, AbstractTypeBuilderList builders)
{
return context.IsVirtualMethod && context.Step == BuildStep.After;
}
public virtual bool IsCompatible(BuildContext context, IAbstractTypeBuilder typeBuilder)
{
return true;
}
public override int GetPriority(BuildContext context)
{
return TypeBuilderConsts.Priority.DataAccessor;
}
public virtual void Build(BuildContext context)
{
if (context == null) throw new ArgumentNullException("context");
Context = context;
switch (context.Step)
{
case BuildStep.Begin: BeginMethodBuild(); return;
case BuildStep.End: EndMethodBuild(); return;
}
switch (context.BuildElement)
{
case BuildElement.Type:
switch (context.Step)
{
case BuildStep.Before: BeforeBuildType(); break;
case BuildStep.Build: BuildType(); break;
case BuildStep.After: AfterBuildType(); break;
case BuildStep.Catch: CatchBuildType(); break;
case BuildStep.Finally: FinallyBuildType(); break;
}
break;
case BuildElement.AbstractGetter:
switch (context.Step)
{
case BuildStep.Before: BeforeBuildAbstractGetter(); break;
case BuildStep.Build: BuildAbstractGetter(); break;
case BuildStep.After: AfterBuildAbstractGetter(); break;
case BuildStep.Catch: CatchBuildAbstractGetter(); break;
case BuildStep.Finally: FinallyBuildAbstractGetter(); break;
}
break;
case BuildElement.AbstractSetter:
switch (context.Step)
{
case BuildStep.Before: BeforeBuildAbstractSetter(); break;
case BuildStep.Build: BuildAbstractSetter(); break;
case BuildStep.After: AfterBuildAbstractSetter(); break;
case BuildStep.Catch: CatchBuildAbstractSetter(); break;
case BuildStep.Finally: FinallyBuildAbstractSetter(); break;
}
break;
case BuildElement.AbstractMethod:
switch (context.Step)
{
case BuildStep.Before: BeforeBuildAbstractMethod(); break;
case BuildStep.Build: BuildAbstractMethod(); break;
case BuildStep.After: AfterBuildAbstractMethod(); break;
case BuildStep.Catch: CatchBuildAbstractMethod(); break;
case BuildStep.Finally: FinallyBuildAbstractMethod(); break;
}
break;
case BuildElement.VirtualGetter:
switch (context.Step)
{
case BuildStep.Before: BeforeBuildVirtualGetter(); break;
case BuildStep.Build: BuildVirtualGetter(); break;
case BuildStep.After: AfterBuildVirtualGetter(); break;
case BuildStep.Catch: CatchBuildVirtualGetter(); break;
case BuildStep.Finally: FinallyBuildVirtualGetter(); break;
}
break;
case BuildElement.VirtualSetter:
switch (context.Step)
{
case BuildStep.Before: BeforeBuildVirtualSetter(); break;
case BuildStep.Build: BuildVirtualSetter(); break;
case BuildStep.After: AfterBuildVirtualSetter(); break;
case BuildStep.Catch: CatchBuildVirtualSetter(); break;
case BuildStep.Finally: FinallyBuildVirtualSetter(); break;
}
break;
case BuildElement.VirtualMethod:
switch (context.Step)
{
case BuildStep.Before: BeforeBuildVirtualMethod(); break;
case BuildStep.Build: BuildVirtualMethod(); break;
case BuildStep.After: AfterBuildVirtualMethod(); break;
case BuildStep.Catch: CatchBuildVirtualMethod(); break;
case BuildStep.Finally: FinallyBuildVirtualMethod(); break;
}
break;
case BuildElement.InterfaceMethod:
BuildInterfaceMethod();
break;
}
}
public override int GetPriority(BuildContext context)
{
return TypeBuilderConsts.Priority.ClearCacheAspect;
}
public override bool IsCompatible(BuildContext context, IAbstractTypeBuilder typeBuilder)
{
return true;
}
public virtual bool IsApplied(BuildContext context, AbstractTypeBuilderList builders)
{
return false;
}
public override void Build(BuildContext context)
{
if (context.BuildElement == BuildElement.Type)
{
context.TypeBuilder.TypeBuilder.SetCustomAttribute(_attributeBuilder);
}
else if (TargetElement is MethodInfo)
{
context.MethodBuilder.MethodBuilder.SetCustomAttribute(_attributeBuilder);
}
else if (TargetElement is PropertyInfo && context.IsAbstractProperty)
{
if (_attributeBuilder != null)
{
FieldBuilder field = (FieldBuilder)context.Fields[TargetElement];
field.SetCustomAttribute(_attributeBuilder);
// Suppress multiple instances when the property has both getter and setter.
//
_attributeBuilder = null;
}
}
}
public override bool IsCompatible(BuildContext context, IAbstractTypeBuilder typeBuilder)
{
return IsRelative(typeBuilder) == false;
}
public override bool IsApplied(BuildContext context, AbstractTypeBuilderList builders)
{
return context.IsAfterStep && context.BuildElement == BuildElement.Type == TargetElement is TypeHelper;
}
public override bool IsCompatible(BuildContext context, IAbstractTypeBuilder typeBuilder)
{
InterceptorAspectBuilder builder = typeBuilder as InterceptorAspectBuilder;
return builder == null || _interceptorType != builder._interceptorType;
}
public override void Build(BuildContext context)
{
if (context.Step == BuildStep.Begin || context.Step == BuildStep.End)
base.Build(context);
}
public override void Build(BuildContext context)
{
if (context.Step == BuildStep.Begin || context.Step == BuildStep.End)
{
base.Build(context);
return;
}
Context = context;
FieldBuilder interceptor = GetInterceptorField();
LocalBuilder info = GetInfoField();
EmitHelper emit = Context.MethodBuilder.Emitter;
// Push ref & out parameters.
//
ParameterInfo[] parameters = Context.CurrentMethod.GetParameters();
for (int i = 0; i < parameters.Length; i++)
{
ParameterInfo p = parameters[i];
if (!p.ParameterType.IsByRef)
continue;
emit
.ldloc (info)
.callvirt (typeof(InterceptCallInfo).GetProperty("ParameterValues").GetGetMethod())
.ldc_i4 (i)
.ldargEx (p, true)
.stelem_ref
.end()
;
}
// Push return value.
//
if (Context.ReturnValue != null)
{
emit
.ldloc (info)
.ldloc (Context.ReturnValue)
.boxIfValueType (Context.CurrentMethod.ReturnType)
.callvirt (typeof(InterceptCallInfo).GetProperty("ReturnValue").GetSetMethod())
;
}
// Set Exception.
//
if (Context.Step == BuildStep.Catch)
{
emit
.ldloc(info)
.ldloc(Context.Exception)
.callvirt(typeof(InterceptCallInfo).GetProperty("Exception").GetSetMethod())
;
}
// Set config string.
//
emit
.ldloc (info)
.ldstrEx (_configString)
.callvirt (typeof(InterceptCallInfo).GetProperty("ConfigString").GetSetMethod())
;
// Set interceptor ID.
//
emit
.ldloc (info)
.ldc_i4 (ID)
.callvirt (typeof(InterceptCallInfo).GetProperty("InterceptorID").GetSetMethod())
;
// Set intercept result.
//
emit
.ldloc (info)
.ldc_i4 ((int)InterceptResult.Continue)
.callvirt (typeof(InterceptCallInfo).GetProperty("InterceptResult").GetSetMethod())
;
// Set intercept type.
//
InterceptType interceptType;
switch (Context.Step)
{
case BuildStep.Before: interceptType = InterceptType.BeforeCall; break;
case BuildStep.After: interceptType = InterceptType.AfterCall; break;
case BuildStep.Catch: interceptType = InterceptType.OnCatch; break;
case BuildStep.Finally: interceptType = InterceptType.OnFinally; break;
default:
throw new InvalidOperationException();
}
emit
.ldloc (info)
.ldc_i4 ((int)interceptType)
.callvirt (typeof(InterceptCallInfo).GetProperty("InterceptType").GetSetMethod())
// Call interceptor.
//
.ldsfld (interceptor)
.ldloc (info)
.callvirt (typeof(IInterceptor), "Intercept", typeof(InterceptCallInfo))
;
// Pop return value.
//
if (Context.ReturnValue != null)
{
emit
.ldloc (info)
.callvirt (typeof(InterceptCallInfo).GetProperty("ReturnValue").GetGetMethod())
.CastFromObject (Context.CurrentMethod.ReturnType)
.stloc (Context.ReturnValue)
;
}
// Pop ref & out parameters.
//
for (int i = 0; i < parameters.Length; i++)
{
ParameterInfo p = parameters[i];
if (!p.ParameterType.IsByRef)
continue;
Type type = p.ParameterType.GetElementType();
emit
.ldarg (p)
.ldloc (info)
.callvirt (typeof(InterceptCallInfo).GetProperty("ParameterValues").GetGetMethod())
.ldc_i4 (i)
.ldelem_ref
.CastFromObject (type)
.stind (type)
;
}
// Check InterceptResult
emit
.ldloc (info)
.callvirt (typeof(InterceptCallInfo).GetProperty("InterceptResult").GetGetMethod())
.ldc_i4 ((int)InterceptResult.Return)
.beq (Context.ReturnLabel)
;
}
public override void Build(BuildContext context)
{
Context = context;
if (CheckOverrideAttribute())
return;
EmitHelper emit = Context.MethodBuilder.Emitter;
MethodInfo method = Context.MethodBuilder.OverriddenMethod;
ParameterInfo[] ps = method.GetParameters();
FieldInfo field = Context.Type.GetField(_memberName);
if (field != null)
{
if (field.IsPrivate)
throw new TypeBuilderException(string.Format(
"Field '{0}.{1}' must be protected or public.",
Context.Type.Name, _memberName));
emit
.ldarg_0
.ldfld (field)
;
CheckNull(emit);
emit
.ldarg_0
.ldfld (field)
;
}
else
{
PropertyInfo prop = Context.Type.GetProperty(_memberName);
if (prop != null)
{
MethodInfo mi = prop.GetGetMethod(true);
if (mi == null)
throw new TypeBuilderException(string.Format(
"Property '{0}.{1}' getter not found.",
Context.Type.Name, _memberName));
if (mi.IsPrivate)
throw new TypeBuilderException(string.Format(
"Property '{0}.{1}' getter must be protected or public.",
Context.Type.Name, _memberName));
emit
.ldarg_0
.callvirt (mi)
;
CheckNull(emit);
emit
.ldarg_0
.callvirt (mi)
;
}
else
{
throw new TypeBuilderException(string.Format(
"Member '{0}.{1}' not found.",
Context.Type.Name, _memberName));
}
}
for (int i = 0; i < ps.Length; i++)
emit.ldarg(i + 1);
emit.callvirt(method);
if (Context.ReturnValue != null)
emit.stloc(Context.ReturnValue);
}
private MethodInfo GetTargetMethod(BuildContext context, string prefix)
{
string targetMethodName = _targetMethodName;
if (targetMethodName == null)
{
MethodInfo mi = context.CurrentMethod;
string name = mi.Name;
if (name.StartsWith(prefix))
targetMethodName = name.Substring(prefix.Length);
else
throw new TypeBuilderException(string.Format(
"Can not figure out the target method for the method '{0}.{1}'.",
mi.DeclaringType.FullName, mi.Name));
}
return _parameterTypes == null?
context.Type.GetMethod(targetMethodName):
context.Type.GetMethod(targetMethodName, _parameterTypes);
}
