/// <summary>
/// = array[index1][index2][...][indexN], and
/// indices = {index1, index2, ..., indexN}
///
/// Note this function doesn't support the replication of array indexing.
/// </summary>
/// <param name="array"></param>
/// <param name="indices"></param>
/// <param name="core"></param>
/// <returns></returns>
public static StackValue GetValueFromIndices(StackValue array, StackValue[] indices, Core core)
{
Validity.Assert(StackUtils.IsArray(array) || StackUtils.IsString(array));
for (int i = 0; i < indices.Length - 1; ++i)
{
if (!StackUtils.IsArray(array) && !StackUtils.IsString(array))
{
core.RuntimeStatus.LogWarning(WarningID.kOverIndexing, WarningMessage.kArrayOverIndexed);
return(StackUtils.BuildNull());
}
StackValue index = indices[i];
if (StackUtils.IsNumeric(index))
{
index = index.AsInt();
array = GetValueFromIndex(array, (int)index.opdata, core);
}
else
{
if (array.optype != AddressType.ArrayPointer)
{
core.RuntimeStatus.LogWarning(WarningID.kOverIndexing, WarningMessage.kArrayOverIndexed);
return(StackUtils.BuildNull());
}
array = GetValueFromIndex(array, index, core);
}
}
return(GetValueFromIndex(array, indices[indices.Length - 1], core));
}
/// <summary>
/// array[index1][index2][...][indexN] = value, and
/// indices = {index1, index2, ..., indexN}
///
/// Note this function doesn't support the replication of array indexing.
/// </summary>
/// <param name="array"></param>
/// <param name="indices"></param>
/// <param name="value"></param>
/// <param name="core"></param>
/// <returns></returns>
public static StackValue SetValueForIndices(StackValue array, StackValue[] indices, StackValue value, Core core)
{
Validity.Assert(StackUtils.IsArray(array) || StackUtils.IsString(array));
for (int i = 0; i < indices.Length - 1; ++i)
{
StackValue index = indices[i];
HeapElement he = GetHeapElement(array, core);
StackValue subArray;
if (StackUtils.IsNumeric(index))
{
index = index.AsInt();
int absIndex = he.ExpandByAcessingAt((int)index.opdata);
subArray = he.Stack[absIndex];
}
else
{
subArray = GetValueFromIndex(array, index, core);
}
// auto-promotion
if (!StackUtils.IsArray(subArray))
{
subArray = HeapUtils.StoreArray(new StackValue[] { subArray }, null, core);
GCUtils.GCRetain(subArray, core);
SetValueForIndex(array, index, subArray, core);
}
array = subArray;
}
return(SetValueForIndex(array, indices[indices.Length - 1], value, core));
}
/// <summary>
/// array[index] = value. Here index can be any type.
///
/// Note this function doesn't support the replication of array indexing.
/// </summary>
/// <param name="array"></param>
/// <param name="index"></param>
/// <param name="value"></param>
/// <param name="core"></param>
/// <returns></returns>
public static StackValue SetValueForIndex(StackValue array, StackValue index, StackValue value, Core core)
{
Validity.Assert(StackUtils.IsArray(array) || StackUtils.IsString(array));
if (StackUtils.IsNumeric(index))
{
index = index.AsInt();
return(SetValueForIndex(array, (int)index.opdata, value, core));
}
else
{
HeapElement he = GetHeapElement(array, core);
if (he.Dict == null)
{
he.Dict = new Dictionary <StackValue, StackValue>(new StackValueComparer(core));
}
StackValue oldValue;
if (!he.Dict.TryGetValue(index, out oldValue))
{
oldValue = StackUtils.BuildNull();
}
GCUtils.GCRetain(index, core);
GCUtils.GCRetain(value, core);
he.Dict[index] = value;
return(oldValue);
}
}
/// <summary>
/// = array[index].
///
/// Note this function doesn't support the replication of array indexing.
/// </summary>
/// <param name="array"></param>
/// <param name="index"></param>
/// <param name="core"></param>
/// <returns></returns>
public static StackValue GetValueFromIndex(StackValue array, StackValue index, Core core)
{
Validity.Assert(StackUtils.IsArray(array) || StackUtils.IsString(array));
if (!StackUtils.IsArray(array) && !StackUtils.IsString(array))
{
return(StackUtils.BuildNull());
}
if (StackUtils.IsNumeric(index))
{
index = index.AsInt();
return(GetValueFromIndex(array, (int)index.opdata, core));
}
else if (index.optype == AddressType.ArrayKey)
{
int fullIndex = (int)index.opdata;
HeapElement he = GetHeapElement(array, core);
if (he.VisibleSize > fullIndex)
{
return(GetValueFromIndex(array, fullIndex, core));
}
else
{
fullIndex = fullIndex - he.VisibleSize;
if (he.Dict != null && he.Dict.Count > fullIndex)
{
int count = 0;
foreach (var key in he.Dict.Keys)
{
if (count == fullIndex)
{
return(he.Dict[key]);
}
count = count + 1;
}
}
}
return(StackUtils.BuildNull());
}
else
{
HeapElement he = GetHeapElement(array, core);
StackValue value = StackUtils.BuildNull();
if (he.Dict != null && he.Dict.TryGetValue(index, out value))
{
return(value);
}
else
{
return(StackUtils.BuildNull());
}
}
}
public static bool RemoveKey(StackValue array, StackValue key, Core core)
{
Validity.Assert(StackUtils.IsArray(array));
if (!StackUtils.IsArray(array))
{
return(false);
}
HeapElement he = GetHeapElement(array, core);
if (StackUtils.IsNumeric(key))
{
long index = key.AsInt().opdata;
if (index < 0)
{
index = index + he.VisibleSize;
}
if (index >= 0 && index < he.VisibleSize)
{
StackValue oldValue = he.Stack[index];
he.Stack[index] = StackUtils.BuildNull();
if (index == he.VisibleSize - 1)
{
he.VisibleSize -= 1;
}
return(true);
}
}
else
{
if (he.Dict != null && he.Dict.ContainsKey(key))
{
StackValue value = he.Dict[key];
GCUtils.GCRelease(key, core);
GCUtils.GCRelease(value, core);
he.Dict.Remove(key);
return(true);
}
}
return(false);
}
/// <summary>
/// Check if an array contain key
/// </summary>
/// <param name="array"></param>
/// <param name="key"></param>
/// <param name="core"></param>
/// <returns></returns>
public static bool ContainsKey(StackValue array, StackValue key, Core core)
{
Validity.Assert(StackUtils.IsArray(array));
if (!StackUtils.IsArray(array))
{
return(false);
}
HeapElement he = GetHeapElement(array, core);
if (StackUtils.IsNumeric(key))
{
long index = key.AsInt().opdata;
if (index < 0)
{
index = index + he.VisibleSize;
}
return(index >= 0 && index < he.VisibleSize);
}
else
{
return(he.Dict != null && he.Dict.ContainsKey(key));
}
}