public static DynamicMethodBody InsertBefore
(this MethodDefinition that)
{
var worker = that.Body.GetILProcessor();
var firstInstruction = worker.Body.Instructions[0];
var emitter = new CecilILEmitter(
that.Module.Assembly,
worker,
inst => worker.InsertBefore(firstInstruction, inst));
var dinfo = new DynamicMethodInfo(emitter);
that.LoadArgsTo(dinfo);
return dinfo.Body;
}
public static DynamicMethodBody ReplaceWith
(this MethodDefinition that)
{
var worker = that.Body.GetILProcessor();
var emitter = new CecilILEmitter(
that.Module.Assembly,
worker,
worker.Append
);
worker.Body.Instructions.Clear();
var dinfo = new DynamicMethodInfo(emitter);
that.LoadArgsTo(dinfo);
return dinfo.Body;
}
public static DynamicMethodBody InsertBeforeRet
(this MethodDefinition that)
{
ILProcessor worker = that.Body.GetILProcessor();
var aggregator = new EmittersAggregator();
foreach (var instruction in worker.Body.Instructions)
{
if (instruction.OpCode == OpCodes.Ret)
{
Instruction instruction1 = instruction;
var emitter = new CecilILEmitter(
that.Module.Assembly,
worker,
inst => worker.InsertBefore(instruction1, inst));
aggregator.Emitters.Add(emitter);
}
}
var dinfo = new DynamicMethodInfo(aggregator);
that.LoadArgsTo(dinfo);
return dinfo.Body;
}
public static DynamicMethodBody NewMethod
(this TypeDefinition that, string methodName, MethodAttributes methodAttributes, Type returnType, AssemblyDefinition assembly)
{
var typeReference = assembly.MainModule.Import(returnType);
var method = new MethodDefinition(methodName, methodAttributes, typeReference);
var worker = method.Body.GetILProcessor();
var emitter = new CecilILEmitter(
assembly,
worker,
method.Body.Instructions.Add);
var dinfo = new DynamicMethodInfo(emitter);
method.LoadArgsTo(dinfo);
that.Methods.Add(method);
return dinfo.Body;
}