private static Fields GetFields(TypeAndCustomInfo declaringTypeAndInfo, int cardinality, bool useRawView)
{
Debug.Assert(declaringTypeAndInfo.Type.GetTupleCardinalityIfAny() == cardinality);
var appDomain = declaringTypeAndInfo.ClrType.AppDomain;
var customTypeInfoMap = CustomTypeInfoTypeArgumentMap.Create(declaringTypeAndInfo);
var tupleElementNames = customTypeInfoMap.TupleElementNames;
var builder = ArrayBuilder <Field> .GetInstance();
Field parent = null;
int offset = 0;
bool includeRawView = false;
while (true)
{
var declaringType = declaringTypeAndInfo.Type;
int n = Math.Min(cardinality, TypeHelpers.TupleFieldRestPosition - 1);
for (int index = 0; index < n; index++)
{
var fieldName = TypeHelpers.GetTupleFieldName(index);
var field = declaringType.GetTupleField(fieldName);
if (field == null)
{
// Ignore missing fields.
continue;
}
var fieldTypeAndInfo = GetTupleFieldTypeAndInfo(appDomain, field, customTypeInfoMap);
if (!useRawView)
{
var name = CustomTypeInfo.GetTupleElementNameIfAny(tupleElementNames, offset + index);
if (name != null)
{
includeRawView = true;
builder.Add(new Field(declaringTypeAndInfo, fieldTypeAndInfo, field, name, parent, isRest: false));
continue;
}
}
builder.Add(new Field(
declaringTypeAndInfo,
fieldTypeAndInfo,
field,
(offset == 0) ? fieldName : TypeHelpers.GetTupleFieldName(offset + index),
parent,
isRest: false));
}
cardinality -= n;
if (cardinality == 0)
{
break;
}
var rest = declaringType.GetTupleField(TypeHelpers.TupleFieldRestName);
if (rest == null)
{
// Ignore remaining fields.
break;
}
var restTypeAndInfo = GetTupleFieldTypeAndInfo(appDomain, rest, customTypeInfoMap);
var restField = new Field(declaringTypeAndInfo, restTypeAndInfo, rest, TypeHelpers.TupleFieldRestName, parent, isRest: true);
if (useRawView)
{
builder.Add(restField);
break;
}
includeRawView = true;
parent = restField;
declaringTypeAndInfo = restTypeAndInfo;
offset += TypeHelpers.TupleFieldRestPosition - 1;
}
return(new Fields(builder.ToImmutableAndFree(), includeRawView));
}
private static ReadOnlyCollection <Field> GetFields(TypeAndCustomInfo declaringTypeAndInfo, int cardinality)
{
Debug.Assert(declaringTypeAndInfo.Type.GetTupleCardinalityIfAny() == cardinality);
var appDomain = declaringTypeAndInfo.ClrType.AppDomain;
var customTypeInfoMap = CustomTypeInfoTypeArgumentMap.Create(declaringTypeAndInfo);
var tupleElementNames = customTypeInfoMap.TupleElementNames;
var builder = ArrayBuilder <Field> .GetInstance();
Field parent = null;
int offset = 0;
while (true)
{
var declaringType = declaringTypeAndInfo.Type;
int n = Math.Min(cardinality, TypeHelpers.TupleFieldRestPosition - 1);
for (int index = 0; index < n; index++)
{
var fieldName = TypeHelpers.GetTupleFieldName(index);
var field = declaringType.GetTupleField(fieldName);
if (field == null)
{
// Ignore missing fields.
continue;
}
var fieldTypeAndInfo = GetTupleFieldTypeAndInfo(appDomain, field, customTypeInfoMap);
var name = CustomTypeInfo.GetTupleElementNameIfAny(tupleElementNames, offset + index);
if (name != null)
{
builder.Add(new Field(declaringTypeAndInfo, fieldTypeAndInfo, field, name, parent));
}
builder.Add(new Field(
declaringTypeAndInfo,
fieldTypeAndInfo,
field,
(offset == 0) ? fieldName : TypeHelpers.GetTupleFieldName(offset + index),
parent));
}
cardinality -= n;
if (cardinality == 0)
{
break;
}
var rest = declaringType.GetTupleField(TypeHelpers.TupleFieldRestName);
if (rest == null)
{
// Ignore remaining fields.
break;
}
var restTypeAndInfo = GetTupleFieldTypeAndInfo(appDomain, rest, customTypeInfoMap);
parent = new Field(declaringTypeAndInfo, restTypeAndInfo, rest, TypeHelpers.TupleFieldRestName, parent);
declaringTypeAndInfo = restTypeAndInfo;
offset += TypeHelpers.TupleFieldRestPosition - 1;
}
// If there were any nested ValueTuples,
// add the Rest field of the outermost.
if (parent != null)
{
while (parent.Parent != null)
{
parent = parent.Parent;
}
builder.Add(parent);
}
return(builder.ToImmutableAndFree());
}