private MethodBuilder GetBody(JoinGroup joinGroup)
{
Type returnType = joinGroup.JoinMethod.ReturnType;
MethodBuilder result = target.DefineMethod(joinGroup.Name, MethodAttributes.Virtual | MethodAttributes.Public,
returnType, joinGroup.ParameterTypes );
ILGenerator generator = result.GetILGenerator();
for (int parameterIndex = 0; parameterIndex < joinGroup.Parameters.Length; parameterIndex++)
{
// Parameters are to be attributed and named nicely
ParameterInfo parameter = joinGroup.Parameters[parameterIndex];
result.DefineParameter(parameterIndex + 1, parameter.Attributes, parameter.Name);
generator.Emit(OpCodes.Ldarg_0);
generator.Emit(OpCodes.Ldfld, channelImplementer
.GetJoinParameterChannelField(joinGroup.Name, parameterIndex,
parameter.ParameterType));
generator.Emit(OpCodes.Ldarg, parameterIndex + 1);
generator.EmitCall(OpCodes.Call, typeof(Channel<>)
.MakeGenericType(new Type[] { parameter.ParameterType })
.GetMethod("Send", new Type[] {parameter.ParameterType}), null);
}
generator.Emit(OpCodes.Ldarg_0);
generator.Emit(OpCodes.Ldfld, channelImplementer
.GetJoinChannelField(joinGroup.Name,
returnType));
generator.EmitCall(OpCodes.Call, typeof(Channel<>)
.MakeGenericType(new Type[] { returnType })
.GetMethod("Receive", new Type[] {}), null);
generator.Emit(OpCodes.Ret);
return result;
}
public void Implement(JoinGroup joinGroup)
{
target.DefineMethodOverride(GetBody(joinGroup), joinGroup.JoinMethod);
}
