internal static Expression Assign(this Expression path, Type converterType, Expression value, AssignLogInfo toLog = null)
{
if (!MutatorsAssignRecorder.IsRecording() || toLog == null)
{
return(path.InternalAssign(converterType, value));
}
MutatorsAssignRecorder.RecordCompilingExpression(converterType, toLog);
MethodCallExpression recordingExpression;
var temp = Expression.Variable(value.Type, "temp");
if (value.Type.IsNullable())
{
recordingExpression = Expression.Call(RecordingMethods.RecordExecutingExpressionWithNullableValueCheckGenericMethodInfo.MakeGenericMethod(Nullable.GetUnderlyingType(value.Type)), Expression.Constant(converterType, typeof(Type)), Expression.Constant(toLog), value);
}
else if (value.Type.IsValueType)
{
recordingExpression = Expression.Call(RecordingMethods.RecordExecutingExpressionMethodInfo, Expression.Constant(converterType, typeof(Type)), Expression.Constant(toLog));
}
else
{
recordingExpression = Expression.Call(RecordingMethods.RecordExecutingExpressionWithValueObjectCheck, Expression.Constant(converterType, typeof(Type)), Expression.Constant(toLog), value);
}
return(Expression.Block(new[] { temp },
Expression.Assign(temp, value),
path.InternalAssign(converterType, temp),
recordingExpression,
temp));
}
protected virtual void BeforeConvert(TSource source)
{
if (MutatorsAssignRecorder.IsRecording())
{
MutatorsAssignRecorder.RecordConverter(GetType().Name);
}
}
protected virtual void AfterConvert(TDest dest, TSource source)
{
if (MutatorsAssignRecorder.IsRecording())
{
MutatorsAssignRecorder.StopRecordingConverter();
}
}
public Func <TSource, TDest> GetConverter(MutatorsContext context)
{
if (MutatorsAssignRecorder.IsRecording())
{
MutatorsAssignRecorder.RecordConverter(GetType().Name);
}
return(GetOrCreateHashtableSlot(context).Converter);
}
public override Expression Apply(Expression path, List <KeyValuePair <Expression, Expression> > aliases)
{
if (Condition == null)
{
return(null);
}
var infoToLog = new AssignLogInfo(path, Expression.Constant(ToString(), typeof(string)));
var condition = Expression.Equal(Expression.Convert(Condition.Body.ResolveAliases(aliases), typeof(bool?)), Expression.Constant(true, typeof(bool?)));
path = PrepareForAssign(path);
var applyResult = Expression.IfThen(condition, Expression.Assign(path, Expression.Constant(path.Type.GetDefaultValue(), path.Type)));
if (MutatorsAssignRecorder.IsRecording())
{
MutatorsAssignRecorder.RecordCompilingExpression(infoToLog);
return(Expression.Block(Expression.Call(typeof(MutatorsAssignRecorder).GetMethod("RecordExecutingExpression"), Expression.Constant(infoToLog)), applyResult));
}
return(applyResult);
}