public void IndexOf_OrderIsCorrect(
IndexOfMethod indexOfMethod,
int count,
bool frontToBackOrder
)
{
SegmentedList <T> list = GenericListFactory(count);
SegmentedList <T> withoutDuplicates = list.ToSegmentedList();
list.AddRange(list);
IndexOfDelegate IndexOf = IndexOfDelegateFromType(indexOfMethod);
Assert.All(
Enumerable.Range(0, count),
i =>
{
if (frontToBackOrder)
{
Assert.Equal(i, IndexOf(list, withoutDuplicates[i]));
}
else
{
Assert.Equal(count + i, IndexOf(list, withoutDuplicates[i]));
}
}
);
}
public void IndexOf_NonExistingValues(
IndexOfMethod indexOfMethod,
int count,
bool frontToBackOrder
)
{
_ = frontToBackOrder;
SegmentedList <T> list = GenericListFactory(count);
IEnumerable <T> nonexistentValues = CreateEnumerable(
EnumerableType.List,
list,
count: count,
numberOfMatchingElements: 0,
numberOfDuplicateElements: 0
);
IndexOfDelegate IndexOf = IndexOfDelegateFromType(indexOfMethod);
Assert.All(
nonexistentValues,
nonexistentValue =>
{
Assert.Equal(-1, IndexOf(list, nonexistentValue));
}
);
}
public void IndexOf_NoDuplicates(IndexOfMethod indexOfMethod, int count, bool frontToBackOrder)
{
List <T> list = GenericListFactory(count);
List <T> expectedList = list.ToList();
IndexOfDelegate IndexOf = IndexOfDelegateFromType(indexOfMethod);
Assert.All(Enumerable.Range(0, count), i =>
{
Assert.Equal(i, IndexOf(list, expectedList[i]));
});
}
public void IndexOf_DefaultValue(IndexOfMethod indexOfMethod, int count, bool frontToBackOrder)
{
T defaultValue = default(T);
List <T> list = GenericListFactory(count);
IndexOfDelegate IndexOf = IndexOfDelegateFromType(indexOfMethod);
while (list.Remove(defaultValue))
{
count--;
}
list.Add(defaultValue);
Assert.Equal(count, IndexOf(list, defaultValue));
}
public void IndexOf_DefaultValue(IndexOfMethod indexOfMethod, int count, bool frontToBackOrder)
{
_ = frontToBackOrder;
T?defaultValue = default;
SegmentedList <T?> list = GenericListFactory(count) !;
IndexOfDelegate IndexOf = IndexOfDelegateFromType(indexOfMethod);
while (list.Remove(defaultValue))
{
count--;
}
list.Add(defaultValue);
Assert.Equal(count, IndexOf(list !, defaultValue !));
}
static SqlDataReaderExtensions()
{
Type typeSqlDataReader = typeof(SqlDataReader);
Type typeSqlStatistics = typeSqlDataReader.Assembly.GetType("System.Data.SqlClient.SqlStatistics", true);
Type typeFieldNameLookup = typeSqlDataReader.Assembly.GetType("System.Data.ProviderBase.FieldNameLookup", true);
BindingFlags staticflags = BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.IgnoreCase | BindingFlags.Static;
BindingFlags instflags = BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.IgnoreCase | BindingFlags.Instance;
DynamicMethod dynmethod = new DynamicMethod("SqlDataReader_IndexOf", typeof(int), new Type[2] {
typeSqlDataReader, typeof(string)
}, true);
ILGenerator gen = dynmethod.GetILGenerator();
gen.DeclareLocal(typeSqlStatistics);
gen.DeclareLocal(typeof(int));
// SqlStatistics statistics = (SqlStatistics) null;
gen.Emit(OpCodes.Ldnull);
gen.Emit(OpCodes.Stloc_0);
// try {
gen.BeginExceptionBlock();
// statistics = SqlStatistics.StartTimer(this.Statistics);
gen.Emit(OpCodes.Ldarg_0); //this
gen.Emit(OpCodes.Call, typeSqlDataReader.GetProperty("Statistics", instflags | BindingFlags.GetProperty, null, typeSqlStatistics, Type.EmptyTypes, null).GetMethod);
gen.Emit(OpCodes.Call, typeSqlStatistics.GetMethod("StartTimer", staticflags | BindingFlags.InvokeMethod, null, new Type[] { typeSqlStatistics }, null));
gen.Emit(OpCodes.Stloc_0); //statistics
// if(this._fieldNameLookup == null) {
Label branchTarget = gen.DefineLabel();
gen.Emit(OpCodes.Ldarg_0); //this
gen.Emit(OpCodes.Ldfld, typeSqlDataReader.GetField("_fieldNameLookup", instflags | BindingFlags.GetField));
gen.Emit(OpCodes.Brtrue_S, branchTarget);
// this.CheckMetaDataIsReady();
gen.Emit(OpCodes.Ldarg_0); //this
gen.Emit(OpCodes.Call, typeSqlDataReader.GetMethod("CheckMetaDataIsReady", instflags | BindingFlags.InvokeMethod, null, Type.EmptyTypes, null));
// this._fieldNameLookup = new FieldNameLookup((IDataRecord)this, this._defaultLCID);
gen.Emit(OpCodes.Ldarg_0); //this
gen.Emit(OpCodes.Ldarg_0); //this
gen.Emit(OpCodes.Ldarg_0); //this
gen.Emit(OpCodes.Ldfld, typeSqlDataReader.GetField("_defaultLCID", instflags | BindingFlags.GetField));
gen.Emit(OpCodes.Newobj, typeFieldNameLookup.GetConstructor(instflags, null, new Type[] { typeof(IDataReader), typeof(int) }, null));
gen.Emit(OpCodes.Stfld, typeSqlDataReader.GetField("_fieldNameLookup", instflags | BindingFlags.SetField));
// }
gen.MarkLabel(branchTarget);
gen.Emit(OpCodes.Ldarg_0); //this
gen.Emit(OpCodes.Ldfld, typeSqlDataReader.GetField("_fieldNameLookup", instflags | BindingFlags.GetField));
gen.Emit(OpCodes.Ldarg_1); //name
gen.Emit(OpCodes.Call, typeFieldNameLookup.GetMethod("IndexOf", instflags | BindingFlags.InvokeMethod, null, new Type[] { typeof(string) }, null));
gen.Emit(OpCodes.Stloc_1); //int output
Label leaveProtectedRegion = gen.DefineLabel();
gen.Emit(OpCodes.Leave_S, leaveProtectedRegion);
// } finally {
gen.BeginFaultBlock();
// SqlStatistics.StopTimer(statistics);
gen.Emit(OpCodes.Ldloc_0); //statistics
gen.Emit(OpCodes.Call, typeSqlStatistics.GetMethod("StopTimer", staticflags | BindingFlags.InvokeMethod, null, new Type[] { typeSqlStatistics }, null));
// }
gen.EndExceptionBlock();
gen.MarkLabel(leaveProtectedRegion);
gen.Emit(OpCodes.Ldloc_1);
gen.Emit(OpCodes.Ret);
IndexOf = (IndexOfDelegate)dynmethod.CreateDelegate(typeof(IndexOfDelegate));
}
