/// <summary>Applies the method patch using the specified <paramref name="patcher"/>.</summary>
/// <param name="patcher">The patcher object that can perform the patching.</param>
/// <exception cref="ArgumentNullException">Thrown when the argument is null.</exception>
/// <exception cref="InvalidOperationException">
/// Thrown when no method for patching can be determined, or both the 'Prefix' and 'Postfix' methods are missing
/// in the derived type.
/// </exception>
void IPatch.ApplyPatch(IPatcher patcher)
{
if (patcher == null)
{
throw new ArgumentNullException(nameof(patcher));
}
if (method == null)
{
method = GetMethod();
}
else
{
return;
}
if (method == null)
{
throw new InvalidOperationException("No method specified for patching");
}
MethodInfo prefix = GetType().GetMethod("Prefix", BindingFlags.Static | BindingFlags.NonPublic);
MethodInfo postfix = GetType().GetMethod("Postfix", BindingFlags.Static | BindingFlags.NonPublic);
if (prefix == null && postfix == null)
{
throw new InvalidOperationException("At least one of the 'Prefix' and 'Postfix' methods must be defined");
}
patcher.ApplyPatch(method, prefix, postfix);
}
