Hey,
On Sat, May 8, 2010 at 6:16 AM, Louis Salin <[email protected]> wrote:
> Thanks for the quick reply.
> I've upgraded my code to 0.9.2.
Cool!
> I'm not sure how to use a
> VariableDefinition to hold the values of get_Now and get_Ticks in the
> code I've posted earlier. Maybe I shouldn't try to write what the
> disassembler is giving me...
Actually, it's usually a very good strategy.
In ildasm, you can see that DateTime.get_Now returns a
System.DateTime, and that System.DateTime.get_Ticks returns a long (a
System.Int64).
stloc/ldloc work on variables, so you need to create appropriate variables.
> var processor = init.Body.GetILProcessor();
Here you would add:
var date_now = new VariableDefinition (module.Import (typeof (DateTime)));
var date_ticks = new VariableDefinition (module.Import (typeof (long)));
init.Body.Variables.Add (date_now);
init.Body.Variables.Add (date_ticks);
init.Body.InitLocals = true;
Also note that Append(Create()) can be simplified with Emit.
> processor.Append(processor.Create(OpCodes.Ldstr, "start time:{0}\n"));
> met =
> assembly.MainModule.Import(typeof(DateTime).GetMethod("get_Now"));
> processor.Append(processor.Create(OpCodes.Call, met));
> processor.Append(processor.Create(OpCodes.Stloc_0));
Change to:
processor.Emit (OpCodes.Stloc, date_now);
> processor.Append(processor.Create(OpCodes.Ldloca_S, 0));
processor.Emit (OpCodes.Ldloca_S, date_now);
> met =
> assembly.MainModule.Import(typeof(DateTime).GetMethod("get_Ticks"));
> processor.Append(processor.Create(OpCodes.Call, met));
> processor.Append(processor.Create(OpCodes.Stloc_1));
processor.Emit (OpCodes.Stloc, date_ticks);
> processor.Append(processor.Create(OpCodes.Ldloca_S, 1));
processor.Emit (OpCodes.Ldloca_S, date_ticks);
> met = assembly.MainModule.Import(typeof(int).GetMethod("ToString"));
You want to call typeof (long).GetMethod ("ToString"), not int.ToString.
> processor.Append(processor.Create(OpCodes.Call, met));
You need to use Callvirt for ToString, it's a virtual method
> met = assembly.MainModule.Import(typeof(string).GetMethod("Format",
> new [] {typeof(string), typeof(object)}));
> processor.Append(processor.Create(OpCodes.Call, met));
And you should
--
Jb Evain <[email protected]>
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mono-cecil
