protected List <Instruction> GetParamInstructions()
{
/* TRACE ENTRY:
* What we'd like to achieve is this:
* var paramNames = new string[] { "param1", "param2" }
* var paramValues = new object[] { param1, param2 }
* log.LogParams(title, paramNames, paramValues)
* ...(existing code)...
*/
var instructions = new List <Instruction>();
var traceEnterNeedsParamArray = body.Method.Parameters.Any(param => !param.IsOut);
var traceEnterParamArraySize = body.Method.Parameters.Count(param => !param.IsOut);
var stringArrayVar = new VariableDefinition(ModuleDefinition.Import(typeof(string[])));
var objectArrayVar = new VariableDefinition(ModuleDefinition.Import(typeof(object[])));
if (traceEnterNeedsParamArray)
{
instructions.Add(Instruction.Create(OpCodes.Ldc_I4, traceEnterParamArraySize)); //setArraySize
instructions.Add(Instruction.Create(OpCodes.Newarr, String)); //create name array
stringArrayVar = body.DeclareVariable("$stringParamArray", stringArrayVar.VariableType);
instructions.Add(Instruction.Create(OpCodes.Stloc, stringArrayVar)); //store it in local variable
instructions.Add(Instruction.Create(OpCodes.Ldc_I4, traceEnterParamArraySize)); //setArraySize
instructions.Add(Instruction.Create(OpCodes.Newarr, Object)); //create name array
objectArrayVar = body.DeclareVariable("$objectParamArray", objectArrayVar.VariableType);
instructions.Add(Instruction.Create(OpCodes.Stloc, objectArrayVar)); //store it in local variable
instructions.AddRange(BuildInstructionsToCopyParameterNamesAndValues(
body.Method.Parameters.Where(p => !p.IsOut), stringArrayVar, objectArrayVar, 0));
}
else
{
return(instructions);
}
//build up logger call
if (IsInstanceLogger)
{
instructions.Add(Instruction.Create(OpCodes.Ldarg_0));
}
instructions.Add(Instruction.Create(IsInstanceLogger ? OpCodes.Ldfld : OpCodes.Ldsfld, LoggerField));
instructions.Add(Instruction.Create(OpCodes.Ldstr, "Parameter Values"));
instructions.Add(Instruction.Create(OpCodes.Ldloc, stringArrayVar));
instructions.Add(Instruction.Create(OpCodes.Ldloc, objectArrayVar));
instructions.Add(Instruction.Create(OpCodes.Ldc_I4, 40));
instructions.Add(Instruction.Create(OpCodes.Ldstr, ""));
instructions.Add(Instruction.Create(OpCodes.Ldstr, ""));
instructions.Add(Instruction.Create(OpCodes.Ldnull));
instructions.Add(Instruction.Create(OpCodes.Ldstr, Method.DisplayName()));
var lineNumber = 0;
Method.Body.Instructions.Last()?.TryGetLineNumber(Method, false, out lineNumber);
instructions.Add(Instruction.Create(OpCodes.Ldc_I4, lineNumber));
instructions.Add(Instruction.Create(IsInstanceLogger ? OpCodes.Callvirt : OpCodes.Call, ParamsMethod));
return(instructions);
}
