public static MethodBuilder DefineMethod(this TypeBuilder typeBuilder, MethodInfo method, MethodAttributes? attributes = null, ParameterInfo[] parameters = null)
{
Type[] parametersTypes = null;
MethodBuilder methodBuilder = null;
parameters = parameters ?? method.GetParameters();
parametersTypes = parameters.ToArray(parameter => parameter.ParameterType);
attributes = attributes ?? method.Attributes & ~MethodAttributes.Abstract;
methodBuilder = typeBuilder.DefineMethod(method.Name, attributes.Value, method.ReturnType, parametersTypes);
parameters.ForEach(1, (parameter, i) => {
var parameterBuilder = methodBuilder.DefineParameter(i, parameter.Attributes, parameter.Name);
if (parameter.IsDefined<ParamArrayAttribute>()) {
parameterBuilder.SetCustomAttribute<ParamArrayAttribute>();
}
else if (parameter.IsOut) {
parameterBuilder.SetCustomAttribute<OutAttribute>();
}
else if (parameter.IsOptional) {
parameterBuilder.SetCustomAttribute<OptionalAttribute>()
.SetConstant(parameter.DefaultValue);
}
});
return methodBuilder;
}