/// <summary>
/// Hijack current thread and give control to the logging library at the beginning of a method
/// </summary>
/// <param name="method"></param>
static void InjectMethodEnterHook(MethodDef method)
{
var prolog = new List <Instruction>()
{
Instruction.Create(OpCodes.Ldstr, method.FullName),
Instruction.Create(OpCodes.Call, MethodEnterRef)
};
method.InjectBefore(method.Body.Instructions.First(), prolog);
}
/// <summary>
/// Hijack current thread and give control to the logging library just before method return
/// </summary>
/// <param name="method">Method to hook</param>
static void InjectMethodReturnHook(MethodDef method)
{
var epilog = new List <Instruction>()
{
Instruction.Create(OpCodes.Ldstr, method.FullName),
Instruction.Create(OpCodes.Call, MethodReturnRef)
};
var toHook = method.Body.Instructions.Where(i => i.OpCode.Code == Code.Ret).ToArray();
foreach (var instruction in toHook)
{
method.InjectBefore(instruction, epilog);
}
}