[mono-cecil] Assembly Debug Information

[Jeff Nevins]

I can't seem to get my modified assembly to retain debug info.

The app is built in debug mode and all the pdbs are available. Before
the assembly I modify is loaded into the AppDomain, I do (in the entry
assembly)

        public static void Weave()
        {
            const string fileName = "SomeDll.dll";
            var data = Weaver.Weave(File.ReadAllBytes(fileName));
            File.WriteAllBytes(fileName, data);
        }

and my Weaver:

        public static byte[] Weave(byte[] assemblyData)
        {
            var weavedAssembly =
Weave(AssemblyFactory.GetAssembly(assemblyData)); // does
modifications
            AssemblyFactory.SaveAssembly(weavedAssembly, out
assemblyData);
            return assemblyData;
        }

After WriteAllBytes gets called, when the assembly is subsequently
loaded, none of my breakpoints get hit and I can't debug the code in
that assembly.

It makes sense, since the symbols would be different after the
modification, but if I try:

 
module.SaveSymbols(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location));

I subsequently get

"Specified method is not supported."

trying to call

AssemblyFactory.SaveAssembly(weavedAssembly, out assemblyData);

I think I'm just doing something stupid wrong here...

Thanks in advance.

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mono-cecil