// Creates the method overrides for the proxy
private void GenerateProxyMethods(Type baseType, TypeBuilder builder)
{
var methods = baseType.GetMethods(BindingFlags.Instance | BindingFlags.Static | BindingFlags.NonPublic | BindingFlags.Public);
foreach (var method in methods)
{
var attributes = AspectExtensions.GetAttributeContainers(method.GetCustomAttributes(true), method.GetCustomAttributeData()).ToArray();
if (attributes.Length == 0 ||
method.Name.Contains("get_") ||
method.Name.Contains("set_") ||
method.Module.Name == "mscorlib.dll")
{
continue;
}
var methodAttributes = method.Attributes ^ MethodAttributes.VtableLayoutMask;
var cpi = method.GetParameters().ToCustomParameters();
var parameterTypes = cpi.Select(x => x.ParameterType).ToArray();
var methodBuilder = builder.DefineMethod(method.Name, methodAttributes, CallingConventions.HasThis, method.ReturnType, parameterTypes);
var methodIl = methodBuilder.GetILGenerator();
EmitOnMethodExecution(methodIl, baseType, method, attributes, cpi);
}
}
// Creates the property overrides for the proxy
private void GenerateProxyProperties(Type baseType, TypeBuilder typeBuilder, IEnumerable <PropertyInfo> properties = null)
{
var getSetAttr = MethodAttributes.Public | MethodAttributes.SpecialName | MethodAttributes.HideBySig | MethodAttributes.Virtual | MethodAttributes.Final;
if (properties == null)
{
properties = baseType.GetProperties(BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance | BindingFlags.Static);
}
foreach (var prop in properties)
{
var attributes = AspectExtensions.GetAttributeContainers(prop.GetCustomAttributes(true), prop.GetCustomAttributeData()).ToArray();
if (attributes.Length == 0)
{
continue;
}
var propBuilder = typeBuilder.DefineProperty(prop.Name, prop.Attributes, prop.PropertyType, null);
var getname = "get_" + prop.Name;
var setname = "set_" + prop.Name;
var accessors = prop.GetAccessors(true);
var accessorNames = accessors.Select(x => x.Name);
if (accessorNames.Contains(getname))
{
MethodBuilder getMBuilder = typeBuilder.DefineMethod(getname, getSetAttr, prop.PropertyType, Type.EmptyTypes);
ILGenerator getIl = getMBuilder.GetILGenerator();
//Getter interception
EmitOnPropertyGetting(getIl, baseType, prop.PropertyType, getname, attributes);
propBuilder.SetGetMethod(getMBuilder);
}
if (accessorNames.Contains(setname))
{
MethodBuilder setMBuilder = typeBuilder.DefineMethod(setname, getSetAttr, null, new Type[] { prop.PropertyType });
setMBuilder.DefineParameter(1, ParameterAttributes.None, "value");
ILGenerator setIl = setMBuilder.GetILGenerator();
//Setter interception
var cpi = new CustomParameterInfo {
ParameterType = prop.PropertyType
};
EmitOnPropertySetting(setIl, baseType, prop.PropertyType, setname, attributes, new CustomParameterInfo[] { cpi });
propBuilder.SetSetMethod(setMBuilder);
}
}
}