private static OpCode GetStindInstruction(System.Type parameterType)
{
if (parameterType.IsByRef)
{
OpCode stindOpCode;
if (OpCodesMap.TryGetStindOpCode(parameterType.GetElementType(), out stindOpCode))
{
return(stindOpCode);
}
}
return(OpCodes.Stind_Ref);
}
public void PushArguments(ParameterInfo[] methodParameters, ILGenerator il, bool isStatic)
{
var parameters = methodParameters ?? new ParameterInfo[0];
var parameterCount = parameters.Length;
il.Emit(OpCodes.Ldc_I4, parameterCount);
il.Emit(OpCodes.Newarr, typeof(object));
il.Emit(OpCodes.Stloc_S, 0);
if (parameterCount == 0)
{
il.Emit(OpCodes.Ldloc_S, 0);
return;
}
var index = 0;
var argumentPosition = 1;
foreach (var param in parameters)
{
var parameterType = param.ParameterType.IsByRef ? param.ParameterType.GetElementType() : param.ParameterType;
il.Emit(OpCodes.Ldloc_S, 0);
il.Emit(OpCodes.Ldc_I4, index);
if (param.IsOut)
{
il.Emit(OpCodes.Ldnull);
il.Emit(OpCodes.Stelem_Ref);
argumentPosition++;
index++;
continue;
}
il.Emit(OpCodes.Ldarg, argumentPosition);
if (param.ParameterType.IsByRef)
{
OpCode ldindInstruction;
if (!OpCodesMap.TryGetLdindOpCode(param.ParameterType.GetElementType(), out ldindInstruction))
{
ldindInstruction = OpCodes.Ldind_Ref;
}
il.Emit(ldindInstruction);
}
if (parameterType == null)
{
throw new InvalidOperationException("parameterType cannot be null");
}
if (parameterType.IsValueType || param.ParameterType.IsByRef || parameterType.IsGenericParameter)
{
il.Emit(OpCodes.Box, parameterType);
}
il.Emit(OpCodes.Stelem_Ref);
index++;
argumentPosition++;
}
il.Emit(OpCodes.Ldloc_S, 0);
}
